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The Effect of Stearic Acid on Microstructure and Properties of (Ti2AlC + Al2O3)p/TiAl Composites Metals (IF 2.9) Pub Date : 2024-03-27 Jiawei Zhu, Meini Yuan, Xin Pei, Xiaosheng Zhou, Maohua Li
A new type of multiphase nanoparticle-reinforced TiAl matrix composites ((Ti2AlC + Al2O3)p/TiAl composites) was successfully prepared by vacuum hot-pressing sintering using Ti powder and Al powder, which were ball-milled with different contents of stearic acid (CH3(CH2)16COOH). The component, microstructure, reaction mechanism, and mechanical properties were studied. The results indicated that the
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Effect of Electromagnetic Power on the Microstructure and Properties of 2219 Aluminum Alloy in Electromagnetic Continuous Casting Technology Metals (IF 2.9) Pub Date : 2024-03-27 Mingxi Jiang, Dazhao Xu, Bin Ya, Linggang Meng, Mengqi Zhu, Changzhi Shan, Xingguo Zhang
Electromagnetic continuous casting technology serves as a significant means for enhancing the casting performance of 2219 aluminum alloy. Investigating the influence of electromagnetic field variations on the solidification process is crucial for studying the microstructure and mechanical properties of electromagnetic cast billets. Through experimental research, variations in the microstructure and
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Research Progress on Thermal Conductivity of High-Pressure Die-Cast Aluminum Alloys Metals (IF 2.9) Pub Date : 2024-03-22 Yixian Liu, Shoumei Xiong
High-pressure die casting (HPDC) has been extensively used to manufacture aluminum alloy heat dissipation components in the fields of vehicles, electronics, and communication. With the increasing demand for HPDC heat dissipation components, the thermal conductivity of die-cast aluminum alloys is paid more attention. In this paper, a comprehensive review of the research progress on the thermal conductivity
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Synthesis of TiCx/Al Composites via In Situ Reaction between AlxTi Melt and Dissolvable Solid Carbon Metals (IF 2.9) Pub Date : 2024-03-24 Lei Guo, Hao Sun, Zhancheng Guo
TiCx/Al composites were successfully prepared in this study by dissolving graphite particles in Al-Ti melt based on the principle of a solid–liquid in situ reaction. It was observed that the microstructure of the TiCx/Al composites changed with changes in the reaction temperature and graphite particle size. With an increase in reaction temperature, the TiCx particles in the TiCx/Al composites transitioned
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Evolution of Microstructure, Properties, and Fracture Behavior with Annealing Temperature in Complex Phase Steel with High Formability Metals (IF 2.9) Pub Date : 2024-03-25 Xiaohong Chu, Feng Zhou, Lei Liu, Xiaolong Xu, Xiaoyue Ma, Weinan Li, Zhengzhi Zhao
In recent years, with the continuous improvement in the requirements for automobile steel formability, complex phase steel with high formability (CH steel) has been widely used. In the present study, the microstructure of CH steel was regulated using the actual production process as a basis and annealing temperature as a variable, and the effects of annealing temperature on the microstructure, properties
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Fretting Fatigue Life Prediction for Aluminum Alloy Based on Particle-Swarm-Optimized Back Propagation Neural Network Metals (IF 2.9) Pub Date : 2024-03-25 Xin Li, Haoran Yang, Jianwei Yang
Fretting fatigue is a specific fatigue phenomenon. Due to the complex mechanisms and multitude of influencing factors, it is still hard to predict fretting fatigue life accurately, despite there being many works on this topic. This paper developed a particle-swarm-optimized back propagation neural network to predict the fretting fatigue life of aluminum alloys using the test data gathered from the
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The Influence of Groove Geometry on the Creep Fracture Behavior of Dissimilar Metal Welds between Ferritic Heat-Resistant Steels and Nickel-Based Alloys Metals (IF 2.9) Pub Date : 2024-03-25 Tengfei Zhang, Qu Liu, Xiaogang Li, Kejian Li, Zhipeng Cai
This study investigates the influence of groove geometry on the high-temperature creep life and fracture behavior of Dissimilar Metal Welds (DMWs) between low-alloy steel 2.25Cr1Mo and austenitic stainless steel 347H using Inconel 82 nickel-based filling metal. This research aims to reveal the effect of groove geometry, especially the stepped groove, on creep crack propagation path and creep life,
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Effect of Copper Content on the Microstructure and Properties of the Sintered Porous Aluminum Wick Metals (IF 2.9) Pub Date : 2024-03-26 Yanbo Cai, Bohua Duan
Porous aluminum has been widely used as a wick, an electrode, and in other products, due to its advantages of a light weight, pore uniformity, and corrosion resistance. However, the dense alumina layer on the surface of Al powder hinders its densification during sintering. In this paper, porous aluminum was prepared via loose powder sintering with the addition of Cu as a sintering aid. The effects
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Structure, Microstructure and Magnetocaloric/Thermomagnetic Properties at the Early Sintering of MnFe(P,Si,B) Compounds Metals (IF 2.9) Pub Date : 2024-03-26 Tvrgvn Qianbai, Hargen Yibole, Francois Guillou
Minimizing the sintering time while ensuring high performances is an important optimization step for the preparation of magnetocaloric or thermomagnetic materials produced by powder metallurgy. Here, we study the influence of sintering time on the properties of a Mn0.95Fe1P0.56Si0.39B0.05 compound. In contrast to former reports investigating different annealing temperatures during heat treatments of
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Introducing Auxetic Behavior to Syntactic Foams Metals (IF 2.9) Pub Date : 2024-03-26 Nejc Novak, Miha Kolar, Nima Movahedi, Matej Vesenjak, Zoran Ren, Thomas Fiedler
This paper proposes an innovative multi-material approach for introducing auxetic behaviour to syntactic foams (SFs). By carefully designing the size, shape, and orientation of the SFs, auxetic deformation behaviour was induced. Re-entrant hexagon-shaped SF elements were fabricated using expanded perlite (EP) particles and a plaster of Paris slurry first. Then, an auxetic pattern of these SF elements
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Corrosion of API 5L X60 Pipeline Steel in Soil and Surface Defects Detection by Ultrasonic Analysis Metals (IF 2.9) Pub Date : 2024-03-26 Fatima Benkhedda, Ismail Bensaid, Abderrahim Benmoussat, Sid Ahmed Benmansour, Abdeldjelil Amara Zenati
The corrosion steels phenomenon is one of the main problems in the oil industry, such as in buried transmission pipelines used for high gas pressure for long distances. Steels are protected from the external soil corrosion through a bituminous coating, whose action is coupled with a cathodic protection system, which aims to maintain steel in its protection field and thus to avoid any corrosion risk
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Detection and Imaging of Corrosion Defects in Steel Structures Based on Ultrasonic Digital Image Processing Metals (IF 2.9) Pub Date : 2024-03-26 Dazhao Chi, Zhixian Xu, Haichun Liu
Corrosion is one of the critical factors leading to the failure of steel structures. Ultrasonic C-scans are widely used to identify corrosion damage. Limited by the range of C-scans, multiple C-scans are usually required to cover the whole component. Thus, stitching multiple C-scans into a panoramic image of the area under detection is necessary for interpreting non-destructive testing (NDT) data.
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Effect of Nitrogen on the Corrosion Resistance of 6Mo Super Austenitic Stainless Steel Metals (IF 2.9) Pub Date : 2024-03-26 Haiyu Tian, Jian Wang, Zhiqiang Liu, Peide Han
6Mo super austenitic stainless steel (SASS) with nitrogen contents of 0.2 and 0.4 (wt.%) was melted, and solution treatments at 1100, 1180, and 1250 °C for 30 min were performed. The effects of nitrogen on the microstructure and pitting resistance of the two steels that signed as 0.2N and 0.4N samples were investigated. At a heat-treatment temperature of 1180 °C, the alloy demonstrates the highest
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MgAl Oxide Coatings Modified with CeO2 Particles Formed by Plasma Electrolytic Oxidation of AZ31 Magnesium Alloy: Photoluminescent and Photocatalytic Properties Metals (IF 2.9) Pub Date : 2024-03-21 Stevan Stojadinović, Nenad Radić
MgAl oxide coatings composed of MgO and MgAl2O4 phases were doped with CeO2 particles via plasma electrolytic oxidation (PEO) of AZ31 magnesium alloy in a 5 g/L NaAlO2 water solution. Subsequently, particles of CeO2 up to 8 g/L were added. Extensive investigations were conducted to examine the morphology, the chemical and phase compositions, and, most importantly, the photoluminescent (PL) properties
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Steel Sheet Deformation in Clinch-Riveting Joining Process Metals (IF 2.9) Pub Date : 2024-03-21 Waldemar Witkowski, Jacek Mucha, Łukasz Boda
This paper presents the deformation of a joined sheet after the clinch riveting process. The DX51D steel sheet with zinc coating was used. The samples to be joined with clinch riveting technology had a thickness of 1 ± 0.05 mm and 1.5 ± 0.1 mm. The sheet deformation was measured before and after the joining process. The rivet was pressed in the sheets with the same dimension between the rivet axis
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Recovery of Rare Earth Elements from Coal Fly and Bottom Ashes by Ultrasonic Roasting Followed by Microwave Leaching Metals (IF 2.9) Pub Date : 2024-03-22 Milica Stojković, Mirjana Ristić, Maja Đolić, Aleksandra Perić Grujić, Antonije Onjia
Considering the rising demand for rare earth elements (REEs), researchers are looking for new sources for their extraction, thereby fostering economic and environmentally justified processing solutions. Among potential industrial sources, coal fly ash emerges as one of the most promising. The recovery of REEs from coal fly and bottom ashes derived from different thermal power plants was the main focus
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Corrosion Behavior of Carbon Steel in LiCl/H2O Mixtures Metals (IF 2.9) Pub Date : 2024-03-23 Modesto Avilés-Flores, Ana Karen Larios-Gálvez, José Martínez-González, Roy Lopez-Sesenes, Alfredo Brito-Franco, Jesús Cerezo, Francisco Christian Martinez Tejeda, America Maria Ramirez-Arteaga, Jose Gonzalo Gonzalez-Rodriguez
The corrosion behavior of 1018 carbon steel in LiCl/H2O mixtures has been evaluated by using potentiodynamic polarization curves, electrochemical noise and electrochemical impedance spectroscopy techniques. Two different concentrations of LiCl were employed, namely 35 and 40 wt. %, and the testing temperatures included 25, 35 and 70 °C. It was found that the steel showed a passive zone; the corrosion
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Experimental Investigation of the Three-Point Bending Property of a Sandwich Panel with a Metal Rubber Core Metals (IF 2.9) Pub Date : 2024-03-25 Wei Zhang, Shanshan Wang, Xiaoyuan Zheng, Xin Xue
Sandwich structures and porous materials have been applied widely in various fields due to their excellent mechanical performance, and multifunctional composites will have a significant engineering demand in the future. Studying damped composites’ mechanical properties and failure forms has significant engineering value and significance. However, the current connecting processes for sandwich panels
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Ultrasound-Assisted Synthesis of High-Entropy Materials for Enhanced Oxygen Evolution Electrocatalysis Metals (IF 2.9) Pub Date : 2024-03-25 Zhiyuan Wang, Chengxu Zhang, Yue Zhang, Jue Hu
High-entropy materials (HEMs) play a significant role in the electrocatalytic oxygen evolution reaction (OER) due to their unique properties. However, there are still challenges in the preparation of HEMs for OER catalysts. In this study, the FeCoNiMnCr catalyst is synthesized for the first time using the ultrasonic hydrothermal-sintering technique and exhibits excellent performance for OER electrocatalysis
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Surface Residual Stress Release Behavior of Shot-Peened Springs Metals (IF 2.9) Pub Date : 2024-03-19 Chenxi Shao, Decheng Wang, Yong Zang, Peng Cheng
Shot peening is the primary method used to improve the fatigue life of springs. In this study, we aimed to quantify the reduction in residual stresses in the shot-peened layer by considering factors such as surface roughness, cyclic loading, and the helix angle, based on the spring’s periodic variation and curvature characteristics. We developed an equivalent replacement algorithm to address the challenge
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Metallurgical Method of Determining Heat Transfer Coefficient in Simulations of Twin-Roll Casting Metals (IF 2.9) Pub Date : 2024-03-20 Min-Seok Kim, Jiwon Kim
We herein suggest a metallurgical method using pure aluminum with no freezing temperature range to derive appropriate roll/melt interfacial heat transfer coefficients in simulation of twin-roll casting process. This method is inspired by the concept that the position of the kiss points where two solidifying shells encounter and the roll nip coincides under the condition where the roll load becomes
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Mechanism of Crystallographic Orientation and Texture Evolution of Ti60 Alloy during Plane Strain Compression Metals (IF 2.9) Pub Date : 2024-03-20 Yi Dai, Yunteng Xiao, Weidong Zeng, Runchen Jia, Weiju Jia
The crystallographic orientation and texture evolution mechanism of equiaxed Ti60 alloy plates were investigated in this study through plane strain compression tests. The EBSD analysis revealed that the received plate contained two characteristic textures that were perpendicular to each other, i.e., c-axis//TD (Component 1) and c-axis//RD (Component 2), with the latter being caused by the change in
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Cu2−xS and Cu2−xSe Alloys: Investigating the Influence of Ag, Zn, and Ni Doping on Structure and Transport Behavior Metals (IF 2.9) Pub Date : 2024-03-20 Andrzej Mikuła, Tomasz Kurek, Miłosz Kożusznik, Paweł Nieroda
Cu2−xS and Cu2−xSe (0 ≤ x ≤ 0.2) alloys stand out as highly promising materials for thermoelectric applications, owing to the phonon–liquid electron–crystal (PLEC) convention. In this study, we undertake a comprehensive investigation to reassess the synthesis conditions, with a focus on achieving pure-phased systems through a direct reaction between elements at elevated temperatures. Simultaneously
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Effect of Coiling Temperature on Microstructure and Properties of Ferritic-Bainitic Dual-Phase Steels Metals (IF 2.9) Pub Date : 2024-03-21 Zhengrong Li, Feng Zhou, Jinhai Liu, Lei Liu, Chuangwei Wang, Zhengzhi Zhao
In this study, a 780 MPa grade ferritic-bainitic dual-phase steel with excellent matching of strength-plasticity and formability was developed using thermomechanical control processing. Optical microscopy, Scanning electron microscopy, and Electron Backscatter Diffraction techniques were used to characterize the microstructure comprehensively, and the effects of coiling temperature on the microstructure
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The Angular Velocity as a Function of the Radius in Molten Ga75In25 Alloy Stirred Using a Rotation Magnetic Field Metals (IF 2.9) Pub Date : 2024-03-21 András Roósz, Arnold Rónaföldi, Mária Svéda, Zsolt Veres
The simulation of the solidification of alloys (like steel or aluminium alloys), which is carried out by using the melt flow induced by a rotation magnetic field (RMF), needs the correct angular velocity vs. the radius function of the melt. Because it is impossible to directly obtain information about the melt flow from industrial casting, this information can only be obtained from well-monitored experiments
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Mechanical Properties of a Structural Component Processed in High-Pressure Die Casting (HPDC) with a Non-Heat-Treated Aluminum Alloy Metals (IF 2.9) Pub Date : 2024-03-21 David Servando Cantú-Fernández, José Jaime Taha-Tijerina, Alejandro González, Pablo Guajardo Hernández, Brian Quinn
This industrial research focuses on the implementation and development of a productive process for an automotive structural component (Shock tower) manufactured by a high-pressure die casting (HPDC) process made of aluminum alloy AuralTM-5. This aluminum alloy has been considered in diverse automotive and aerospace components that do not require heat treatment due to its mechanical properties as cast
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Effect of Rare Earth Y on Microstructure and Mechanical Properties of High-Carbon Chromium Bearing Steel Metals (IF 2.9) Pub Date : 2024-03-22 Wenwen Xu, Luhua Liu, Qing Yang, Wei Zhou, Diqiang Luo, Cunchang Jiang, Binbing Yin, Chaobin Lai
The effect of rare earth Y on the microstructure and properties of high-carbon chromium bearing steel in different heat treatment processes has been studied. The microstructure and mechanical properties of the bearing steel under hot rolled, annealed and quenched and tempered conditions were compared and analysed, focusing on the effect of inclusions on fatigue performance. The addition of rare earth
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Effect of the Fe/Mn Ratio on the Microstructural Evolution of the AA6063 Alloy with Homogenization Heat Treatment Interruption Metals (IF 2.9) Pub Date : 2024-03-23 Adolfo Galván Avalos, Jesús Torres Torres, Alfredo Flores Valdés
The casting structure of the AA6063 alloy contains intermetallic particles of β-Al5FeSi, which can result in the fragility of the cast pieces. However, with heat treatment, the β phase transforms from a needle or plate form into an intermetallic phase known as α, which resembles Chinese-script in its morphology. To analyze the effect of the ratio of Fe/Mn with different ratios of 0.5, 0.75, and 1,
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Effect of Aging Temperature on Microstructure, Mechanical, and Wear Properties of 18Ni-300 Maraging Steel Produced by Powder Bed Fusion Metals (IF 2.9) Pub Date : 2024-03-23 Nawon Kwak, Yujin Lim, Seokha Heo, Chami Jeon, Ilguk Jo
Additive manufacturing technologies for metallic materials based on powder bed fusion have enormous industrial potential. In this study, we manufactured 18Ni-300 maraging steel using the powder bed fusion (PBF) process and investigated the effects of annealing temperatures of 430 °C, 490 °C, and 550 °C for 3 h on its microstructure, tensile fracture mechanism, and wear properties compared with the
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Microstructural and Mechanical Characterization of Low-Alloy Fire- and Seismic-Resistant H-Section Steel Metals (IF 2.9) Pub Date : 2024-03-23 Jinhyuk Kim, Gyeongsik Yu, Sangeun Kim, Jinwoo Park, Minkyu Ahn, Jun-Ho Chung, Chang-Hoon Lee, Chansun Shin
This study investigates the microstructure and nano-hardness distribution across the thickness of an H-section steel beam, specifically designed for seismic and fire resistance and fabricated using a quenching and self-tempering process. The beam dimensions include a 24 mm thick flange, with flange and web lengths of 300 mm and 700 mm, respectively. Our findings indicate that the mechanical properties
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Numerical Study on the Heat Transfer of Confined Air-Jet Quenching of Steel Sheets Metals (IF 2.9) Pub Date : 2024-03-24 Yanqi Ye, Tianliang Fu, Guanghao Liu, Guodong Wang
The high flatness quenching of ultra-high-strength steel sheets is a technical problem in the steel industry. In this study, the traditional water and spray quenching methods were abandoned, and the roller-constrained slot air-jet quenching method was proposed for steel sheets below 3 mm thickness, which provided a theoretical reference for producing thinner, wider, and higher-flatness steel sheets
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Buckling Defect Optimization of Constrained Ring Rolling of Thin-Walled Conical Rings with Inner High Ribs Combining Response Surface Method with FEM Metals (IF 2.9) Pub Date : 2024-03-24 Wei Feng, Peng Zhao
A buckling defect will appear on the outer surface of the deformed ring during the constrained ring rolling (CRR) of an aluminum alloy thin-wall conical ring with inner high ribs (AATWCRIHR) if the geometrical dimension of the ribs does not match the wall thickness. To avoid the buckling defect, a quantitative method for characterizing the degree of the buckling defect is proposed using the area of
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Laser Remelting of Ductile Cast Iron to Achieve a Graphite-Free Surface Layer for Enabling a Manual High-Gloss Finish Metals (IF 2.9) Pub Date : 2024-03-18 Laura Kreinest, Johannes Schüssler, Onur Özaydin, Sujith Kochuthundil Subhash, Edgar Willenborg, Andreas Bührig-Polaczek
Laser remelting is being explored as a viable technique for obtaining a graphite-free, defect-free surface layer on cast iron EN GJS 400-15. The goal is to obtain a large remelted layer along with a low surface roughness to enable a subsequent manual high-gloss surface finish. The impact of the laser remelting process parameters is evaluated by using samples with three different cooling rates, resulting
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Correction: Gargalis et al. A Comparative Investigation of Duplex and Super Duplex Stainless Steels Processed through Laser Powder Bed Fusion. Metals 2023, 13, 1897 Metals (IF 2.9) Pub Date : 2024-03-20 Leonidas Gargalis, Leonidas Karavias, Joachim S. Graff, Spyros Diplas, Elias P. Koumoulos, Evangelia K. Karaxi
In the original publication [...]
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Morphological Evolution of Single-Core Multi-Strand Wires during Ultrasonic Metal Welding Metals (IF 2.9) Pub Date : 2024-03-20 Andreas Gester, Dmitrii Ozherelkov, Guntram Wagner
Ultrasonic metal welding (USMW) finds widespread utilization in automotive industries, where it is used for connecting the wire harness of the vehicle, consisting of stranded wires, to the terminals. However, the behavior of the strands during the compaction process is still understudied and often overlooked. Therefore, this work focuses on the investigation of the wire compaction behavior from a morphological
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Effects of Different CaO/Al2O3 Ratios on the Phase Composition and Desulfurization Ability of CaO-Based Desulfurizers in Hot Metal Metals (IF 2.9) Pub Date : 2024-03-20 Jyun-Ming Shen, Chi-Ming Lin, Yu-En Chang, Hui-Jan Lin, Weite Wu
In response to the development of low-carbon smelting technology, reducing the use of fluor-containing materials in desulfurizers is an important research topic. The development of new-generation KR (Kambara Reactor) desulfurizers is shifting towards a higher Al2O3 content rather than CaF2, yet there is currently an absence of thorough and comprehensive mechanisms for desulfurization. Consequently
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The Study on Corrosion Resistance of Ti-6Al-4V ELI Alloy with Varying Surface Roughness in Hydrofluoric Acid Solution Metals (IF 2.9) Pub Date : 2024-03-20 Han Wang, Quanshi Cheng, Zhuo Chang, Kedi Wang, Xuemin Gao, Xueling Fan
The corrosion resistance of titanium alloy poses a crucial challenge, significantly affecting its prospect for service and application. The present study aimed to investigate the corrosion resistance of Ti-6Al-4V ELI alloys with varying surface roughness in hydrofluoric acid solution, in order to assess the influence of roughness on their corrosion resistance performance. The weight loss percentage
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Different Heat-Exposure Temperatures on the Microstructure and Properties of Dissimilar GH4169/IC10 Superalloy Vacuum Electron Beam Welded Joint Metals (IF 2.9) Pub Date : 2024-03-18 Hualin Cai, Zhixuan Ma, Jiayi Zhang, Liang Qi, Jinbing Hu, Jiayi Zhou
Vacuum electron-beam welding (EBW) was used to join the precipitation-strengthened GH4169 superalloy and a new nickel-based superalloy IC10 to fabricate the turbine blade discs. In this study, a solid solution (1050 °C/2 h for GH4169 and 1150 °C/2 h for IC10) and different heat-exposure temperatures (650 °C, 750 °C, 950 °C and 1050 °C/200 h, respectively) were used to study the high-temperature tensile
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Influence of Submerged Entry Nozzles on Fluid Flow, Slag Entrainment, and Solidification in Slab Continuous Casting Metals (IF 2.9) Pub Date : 2024-03-18 Xingang Zhen, Shiheng Peng, Jiongming Zhang
In this paper, the fluid flow, slag entrainment and solidification process in a slab mold were studied using physical modeling and numerical simulation. The effect of two types of submerged entry nozzles (SENs) was also studied. The results showed that the surface velocity for type A SEN was larger than that using type B SEN. For type A SEN, the maximum surface velocity was 0.63 m/s and 0.56 m/s, and
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Effect Mechanism of α-Ferrite Sustained Precipitation on High-Temperature Properties in Continuous Casting for Peritectic Steel Metals (IF 2.9) Pub Date : 2024-03-18 Songyuan Ai, Yifan Li, Mujun Long, Haohao Zhang, Dengfu Chen, Huamei Duan, Danbin Jia, Bingzhi Ren
Exploring the mechanism of the α-ferrite precipitation process on high-temperature properties plays an important guiding role in avoiding slab cracks and effectively regulating quality. In this work, in situ observation of the α-ferrite sustained precipitation behavior for peritectic steel during the austenitic phase transition process has been investigated using high-temperature confocal scanning
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Mechanical Properties and Fracture Toughness Prediction of Ductile Cast Iron under Thermomechanical Treatment Metals (IF 2.9) Pub Date : 2024-03-19 Mohammed Y. Abdellah, Hamzah Alharthi, Rami Alfattani, Dhia K. Suker, H. M. Abu El-Ainin, Ahmed F. Mohamed, Mohamed K. Hassan, Ahmed H. Backar
Temperature has a great influence on the mechanical properties of ductile cast iron or nodular cast iron. A thermomechanical treatment was carried out at various elevated temperatures of 450 °C, 750 °C and 850 °C using a universal testing machine with a tub furnace. Specimens were held at these temperatures for 20 min to ensure a homogeneous temperature distribution along the entire length of the specimen
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The Influence of Yttrium Content and Ceramic Crucible Materials on Desulfurization during Vacuum Induction Melting of DD5 Superalloys Metals (IF 2.9) Pub Date : 2024-03-19 Fuwei Wang, Ying Cheng, Shoubin Zhang, Rui Zhang, Yanyun Sun, Kai Guan, Huarui Zhang, Hu Zhang
In this study, the effect of adding different contents of yttrium (Y) during vacuum induction melting in Al2O3 and Y2O3 crucibles on the purification of DD5 alloys was investigated. The results show that the Y2O3 crucible exhibited great crucible stability and an excellent desulfurization effect when melting a Y-containing DD5 alloy. The S content of the alloy was reduced from 5.03 ppm to 1.36 ppm
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Coaxial Electrospinning of CoS1.097@C Core–Shell Fibers Anode Material for High-Performance Sodium-Ion Batteries Metals (IF 2.9) Pub Date : 2024-03-19 Hongming Chen, Yan Li, Dan Zhou
As an important component that affects the storage performance of sodium-ion batteries (SIBs), novel anode materials still need to be well explored. Herein, CoS1.097@C core–shell fibers as anode material were designed via coaxial electrospinning, stabilization, and carbonization. Specially, CoS1.097 powders are distributed in the inner shell of carbon fibers, and sufficient pore spaces are present
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Microgrid-Patterned Ni Foams as Current Collectors for Ultrafast Energy Storage Devices Metals (IF 2.9) Pub Date : 2024-03-19 Un-Tae Kim, Myeong-Hun Jo, Hyo-Jin Ahn
Current research is focused on developing active materials through surface functionalization, porosity, composites, and doping for ultrafast electric double layer capacitors (EDLCs). In this study, deviating from existing strategies focused on active materials, we designed tunable 3D microgrid-patterned (MP) surface morphologies on Ni foams used as current collectors using SUS meshes as rigid stamps
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Movement Strategy Influences on the Characteristics of Low-Carbon Steel Generated by the Lamination Object Manufacturing Method Metals (IF 2.9) Pub Date : 2024-03-19 Tran Le Hong Ngoc, Ha Thi Xuan Chi, Pham Son Minh, Van-Thuc Nguyen, Tran Minh The Uyen
This paper investigates the effects of heating movement techniques on the properties of low-carbon steel samples that are 3D printed using S20C lamination object manufacturing (LOM). A Tungsten iner gas (TIG) machine and a computer numerical control (CNC) machine were used together to join the steel sheet. The LOM samples were created with a straight-profile, short-profile, cross-profile, and curved-profile
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A Study on the Aging Behavior of Nitrided W18Cr4V Steel in High-Temperature Sodium Metals (IF 2.9) Pub Date : 2024-03-19 Xiaogang Fu, Na Liang, Wei Zhang, Liu Tao, Bo Qin, Zhangshun Ruan, Bin Long, Shasha Lv
The loading and unloading elevators are the primary equipment in the refueling system, used for transferring fuel assemblies in the sodium-cooled fast reactors. The guideway friction pairs are the critical components of these elevators in the refueling system. With the excellent hardness and wear resistance in air, nitrided W18Cr4V steel is a promising material for the guideway friction pairs. In order
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Use of Electrochemical Noise for the Study of Corrosion by Passivated CUSTOM 450 and AM 350 Stainless Steels Metals (IF 2.9) Pub Date : 2024-03-16 Facundo Almeraya-Calderon, Miguel Villegas-Tovar, Erick Maldonado-Bandala, Maria Lara-Banda, Miguel Angel Baltazar-Zamora, Griselda Santiago-Hurtado, Demetrio Nieves-Mendoza, Luis Daimir Lopez-Leon, Jesus Manuel Jaquez-Muñoz, Francisco Estupiñán-López, Citlalli Gaona-Tiburcio
Precipitation-hardening stainless steels, like AM 350 and Custom 450, are extensively utilized in various aerospace applications. The latter steel is utilized for applications needing great strength and corrosion resistance. In contrast, the former steel has a good corrosion resistance and moderate strength. The purpose of this study was to analyze transient frequencies in the electrochemical noise
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The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding Metals (IF 2.9) Pub Date : 2024-03-16 Mohammed Abdelmaola, Brian Thurston, Boyd Panton, Anupam Vivek, Glenn Daehn
This study demonstrates that the thickness of the target and its backing condition have a powerful effect on the development of a wave structure in impact welds. Conventional theories and experiments related to impact welds show that the impact angle and speed of the flyer have a controlling influence on the development of wave structure and jetting. These results imply that control of reflected stress
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The Coupled Temperature Field Model of Difficult-to-Deform Mg Alloy Foil High-Efficiency Electro-Rolling and Experimental Study Metals (IF 2.9) Pub Date : 2024-03-17 Gengliang Liu, Jiaxuan Yang, Tianren Shan, Huaimei Li, Dianlong Wang, Lipo Yang
In response to the challenging difficult-to-deform of magnesium foils, a high-efficiency and high-precision electro-rolling temperature field coupled model is established. This model is designed to simulate the non-annealing electric rolling (NAER) process of Mg foils under conditions of high current density, rapid temperature rise rates, and large temperature gradients. Firstly, a coupled temperature
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Improved Discharge Performance of AZ72-0.05La Alloy Anode via Refining Mg17Al12 Phase Metals (IF 2.9) Pub Date : 2024-03-17 Junqing Guo, Bo Wang, Shizhong An
The morphology of phases in magnesium alloys is vitally important for their performance. It is found that improved discharge performance is achieved in AZ72-0.05La alloy via a refining Mg17Al12 phase by means of hot rolling. Before rolling, as-cast AZ72-0.05La alloy has a relatively coarse and strip-like Mg17Al12 phase. After rolling, the Mg17Al12 phase becomes much finer, showing a granulated shape
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Efficient Recovery of Lithium from Spent Lithium Ion Batteries Effluent by Solvent Extraction Using 2-Ethylhexyl Hydrogen {[Bis(2-Ethylhexyl) Amino]methyl} Phosphonate Acid Metals (IF 2.9) Pub Date : 2024-03-17 Xiaoqin Wang, Zhulin Zhou, Xuting Si, Youcai Lu, Qingchao Liu
In order to overcome the interface emulsification problem of TBP-FeCl3 systems and the instability of β-diketone systems in high-concentration alkaline medium, it is necessary to design and synthesize some new extractants. By introducing amino groups into a phosphorus extractant, a new 2-ethylhexyl hydrogen {[bis(2-ethylhexyl)amino]methyl} phosphonate acid (HA) extractant was synthesized. In this study
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Effect of Hydrogen on Fatigue Life and Fracture Morphologies of TRIP-Aided Martensitic Steels with Added Nitrogen Metals (IF 2.9) Pub Date : 2024-03-17 Tomohiko Hojo, Akihiko Nagasaka, Junya Kobayashi, Yuki Shibayama, Eiji Akiyama
The effects of hydrogen on the tensile properties, fatigue life, and tensile and fatigue fracture morphologies of nitrogen-added ultrahigh-strength transformation-induced plasticity (TRIP)-aided martensitic (TM) steels were investigated. The total elongation and number of cycles to failure (Nf) of the hydrogen-charged TM steels decreased with the addition of nitrogen; in particular, adding 100 ppm
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Fracture Behaviour of Aluminium Alloys under Coastal Environmental Conditions: A Review Metals (IF 2.9) Pub Date : 2024-03-15 Ibrahim Alqahtani, Andrew Starr, Muhammad Khan
Aluminium alloys have been integral to numerous engineering applications due to their favourable strength, weight, and corrosion resistance combination. However, the performance of these alloys in coastal environments is a critical concern, as the interplay between fracture toughness and fatigue crack growth rate under such conditions remains relatively unexplored. This comprehensive review addresses
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Temperature-Dependent Young’s Modulus of TaC- and TiC-Strengthened Co-Re-Based Alloys Metals (IF 2.9) Pub Date : 2024-03-11 Torben Fiedler, Eugen Seif, Hans-Rainer Sinning, Joachim Rösler
The knowledge of Young’s modulus is important for a quantitative assessment of strengthening contributions in CoRe alloys, such as strengthening by carbides. In this work, the temperature-dependent Young‘s modulus of monocarbide-strengthened CoRe-based alloys is measured using the vibrating reed technique. In this method, a reed-shaped sample is excited electrostatically, and the eigenfrequencies are
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Thermal Cracking and Friction Performance of Two Kinds of Compacted Graphite Iron Brake Discs under Intensive Braking Conditions Metals (IF 2.9) Pub Date : 2024-03-14 Zhuo Xu, Guiquan Wang, Yanxiang Li
The limited thermal conductivity of compacted graphite iron constrains its application in brake discs. The matrix plays a crucial role in balancing the thermal conductivity and mechanical performance of compacted graphite iron. Therefore, two kinds of compacted graphite brake discs with different ferrite proportions were utilized to investigate their thermal cracking and friction performance under
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Elimination of Low-Angle Grain Boundary Networks in FeCrAl Alloys with the Electron Wind Force at a Low Temperature Metals (IF 2.9) Pub Date : 2024-03-14 Md Hafijur Rahman, Sarah Todaro, Luke Warner, Daudi Waryoba, Aman Haque
Low-angle grain boundaries (LAGBs) accommodate residual stress through the rearrangement and accumulation of dislocations during cold rolling. This study presents an electron wind force-based annealing approach to recover cold-rolling induced residual stress in FeCrAl alloy below 100 °C in 1 min. This is significantly lower than conventional thermal annealing, which typically requires temperatures
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Orientation Relationship of Intergrowth Al2Fe and Al5Fe2 Intermetallics Determined by Single-Crystal X-ray Diffraction Metals (IF 2.9) Pub Date : 2024-03-15 Yibo Liu, Changzeng Fan, Bin Wen, Zhefeng Xu, Ruidong Fu, Lifeng Zhang
Although the Al2Fe phase has similar decagonal-like atomic arrangements as that of the orthorhombic Al5Fe2 phase, no evidence for intergrowth samples of Al2Fe and Al5Fe2 has been reported. In the present work, the co-existence of Al2Fe and Al5Fe2 phases has been discovered from the educts obtained with a nominal atomic ratio of Al:Fe of 2:1 by arc melting. First, single-crystal X-ray diffraction (SXRD)
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Arc Quality Index Based on Three-Phase Cassie–Mayr Electric Arc Model of Electric Arc Furnace Metals (IF 2.9) Pub Date : 2024-03-15 Aljaž Blažič, Igor Škrjanc, Vito Logar
In steel recycling, the optimization of Electric Arc Furnaces (EAFs) is of central importance in order to increase efficiency and reduce costs. This study focuses on the optimization of electric arcs, which make a significant contribution to the energy consumption of EAFs. A three-phase equivalent circuit integrated with the Cassie–Mayr arc model is used to capture the nonlinear and dynamic characteristics
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Laser Surface Transformation Hardening for Automotive Metals: Recent Progress Metals (IF 2.9) Pub Date : 2024-03-15 Mojtaba Karamimoghadam, Mohammad Rezayat, Mahmoud Moradi, Antonio Mateo, Giuseppe Casalino
This article discusses recent advancements in the Laser Surface Transformation Hardening (LSTH) process applied to industrial metals. It focuses on examining the microstructure of the metal surface layer and explores different methods of performing LSTH to evaluate mechanical and surface properties. The study also investigates the utilization of various industrial lasers and simulation software for
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Effect of Deformation Degree on Microstructure and Properties of Ni-Based Alloy Forgings Metals (IF 2.9) Pub Date : 2024-03-15 Ruifeng Dong, Jian Li, Zishuai Chen, Wei Zhang, Xing Zhou
The primary objective of this paper is to investigate the influence of deformation degree on the microstructure and properties of a Ni-based superalloy. An upsetting experiment was conducted using a free-forging hammer to achieve a deformation degree ranging from 60% to 80%. The impact of the forging deformation degree on the hardness and high-temperature erosion performance was evaluated using the