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Phase formation and strengthening mechanism of Zn–2 wt%Cu alloy fabricated by laser powder bed fusion Addit. Manuf. (IF 11.0) Pub Date : 2024-04-20 Cunxiao Lan, Yunlong Hu, Chengzhe Wang, Wei Li, Xuehao Gao, Xin Lin
Biodegradable Zn-based alloys with stable degradation rates and excellent biocompatibility have numerous potential applications as orthopedic implant materials. In this study, a Zn–2 wt%Cu alloy is fabricated through laser powder bed fusion (LPBF), and its microstructural evolution, mechanical properties, and strengthening mechanism are investigated. The microstructure comprises equiaxed grains with
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Elasto-dynamic characterization of material extrusion infills using homogenization methods Addit. Manuf. (IF 11.0) Pub Date : 2024-04-16 Christina J. Naify, Colby W. Cushing
Dynamic properties of additively-manufactured materials are generally under-characterized compared to static properties. Material extrusion (MEX) is the most readily available and economical method of 3D printing available. In order to reduce weight and material costs, most commercial MEX slicing software utilizes a concept called infill, often in the form of lattices, which fills the 3D space with
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Incorporating non-linear effects in fast semi-analytical thermal modelling of powder bed fusion Addit. Manuf. (IF 11.0) Pub Date : 2024-04-15 S.R. Cooke, C.W. Sinclair, D.M. Maijer
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A methodology for the 3D characterization of surfaces using X-ray computed tomography: Application to additively manufactured parts Addit. Manuf. (IF 11.0) Pub Date : 2024-04-14 Florian Steinhilber, Joel Lachambre, David Coeurjolly, Jean-Yves Buffiere, Guilhem Martin, Remy Dendievel
Many studies highlight the significance of three-dimensional surface topography characterization in assessing its effect on the mechanical or functional properties of materials. This is especially obvious for parts made by additive manufacturing (AM), known for their complex shape and surface topographies. However, a vast majority of 3D characterizations have constraints regarding the macroscopic geometry
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Enabling fast debinding of ceramic vat photopolymerization prints with supercritical carbon dioxide as a solvent Addit. Manuf. (IF 11.0) Pub Date : 2024-04-14 Nonna Nurmi, Erkka J. Frankberg, Milla Rinne, Teemu Sandblom, Piie Konnunaho, Erkki Levänen
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In-situ synthesis of TiN and its effects on Fe-12Cr-6Al in laser powder bed fusion Addit. Manuf. (IF 11.0) Pub Date : 2024-04-13 Omer Cakmak, Hwasung Yeom, Jung-Wook Cho
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Laser additive remanufacturing Ni-based multilayers reinforced with dual-scale tungsten carbides via a novel integrated strategy Addit. Manuf. (IF 11.0) Pub Date : 2024-04-13 Shengbin Zhao, Guifeng Luo, Lijun Yang, Mingdi Wang, Jinfeng Zhang, Yuanping Feng
This study entailed the development of a novel integrated strategy that incorporates hot-wire-feed laser deposition and remelting for repairing stainless steel having WC-Ni composite multilayers reinforced with homogeneously distributed dual-scale tungsten carbide particles. The microstructural characteristics, phase compositions, and microstructural evolution of the composites obtained under three
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Optimal shape design of printing nozzles for extrusion-based additive manufacturing Addit. Manuf. (IF 11.0) Pub Date : 2024-04-13 Tomás Schuller, Maziyar Jalaal, Paola Fanzio, Francisco J. Galindo-Rosales
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Effects of hatch spacing on pore segregation and mechanical properties during blue laser directed energy deposition of AlSi10Mg Addit. Manuf. (IF 11.0) Pub Date : 2024-04-12 An Wang, Qianglong Wei, Zijue Tang, J.P. Oliveira, Chu Lun Alex Leung, Pengyuan Ren, Xiaolin Zhang, Yi Wu, Haowei Wang, Hongze Wang
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Predictive process diagram for parameters selection in laser powder bed fusion to achieve high-density and low-cracking built parts Addit. Manuf. (IF 11.0) Pub Date : 2024-04-12 Minh Anh Luan Phan, Oliver Dew, Iain Todd
The laser powder bed fusion process (LPBF) has been widely used in many industrial sectors, including automotive, aerospace, and biomedical devices. With the fast development of new materials designed for critical applications, the conventional design of experiments for determining an optimal LPBF process window is a time and material-consuming activity. This can impose difficulties on small-to-medium
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Comprehensive performance evaluation and prediction of additive manufactured cast iron/GH4169 bimetal based on forward design requirements Addit. Manuf. (IF 11.0) Pub Date : 2024-04-12 Yixuan Fu, Jinxiang Liu, Weiqing Huang, Yungui Liu, Kailin Liu, Ning Li
To satisfy the high-load bearing and high-temperature resistance requirements put forward by the increased power density of the cast iron cylinder head, the cast iron/GH4169 bimetal was manufactured by Powder Bed Fusion (PBF) in forward design. The performance of bimetals is simultaneously affected by different properties in several regions. Thus, a more comprehensive approach to evaluating bimetallic
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In-situ monitoring of additive friction stir deposition of AA6061: Effect of layer thickness on the microstructure and mechanical properties Addit. Manuf. (IF 11.0) Pub Date : 2024-04-12 Q. Qiao, M. Zhou, X. Gong, S. Jiang, Y. Lin, H. Wang, W.I. Lam, H. Qian, D. Guo, D. Zhang, C.T. Kwok, X. Li, L.M. Tam
Depositions of AA6061 aluminum alloy with different thicknesses (0.5, 1.0 and 1.5 mm) and homogeneous microstructure were successfully obtained through additive friction stir deposition (AFSD) technique. A self-developed in-situ process monitoring kit has been utilized to in-situ monitor the real-time temperature, force and torque during the AFSD process. Effect of thickness on the microstructure and
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Preparation and properties of Si3N4 ceramics via vat photopolymerization using Si3N4 powders coated with bowl-like boehmite Addit. Manuf. (IF 11.0) Pub Date : 2024-04-10 Qi-Wen Wang, Jia-Min Wu, Chong Tian, Zhang-Ao Shi, Chun-Lei Liu, Xin Lin, Hai-Sheng Xu, Fen Wang, Yu-Sheng Shi
It is a significant challenge to fabricate SiN ceramics due to the high refractive index (2.1) and UV absorbance (0.8903 at the wavelength of 405 nm) of SiN powders. In this study, a method of filling SiN powders into bowl-like hollow boehmite microspheres was proposed. And the effects of the boehmite coating content on the properties of SiN ceramic slurries, green bodies and sintered samples were
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Strong and densified 3D metal-ceramic composite with strengthened layer structure by material extrusion additive manufacturing Addit. Manuf. (IF 11.0) Pub Date : 2024-04-10 Zhonghuai Yi, Ting Shen, Huiwen Xiong, Xiao Kang, Lei Zhang, Kechao Zhou
Material extrusion (MEX) of high-filled polymers with metal or ceramic powders has showed great potential in fabricating 3D structure combined via the powder metallurgy route. However, defects between deposited layers adversely affect the final performance of 3D components. Here, we introduced a high-flow filling approach based on effective viscosity control and optimized printing strategies for preparing
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Direct additive manufacturing of transparent fused silica glasses using an integrated paste printing and laser in-situ melting technology Addit. Manuf. (IF 11.0) Pub Date : 2024-04-10 Haobo Zhang, Qiurui Zhang, Pei Xiang, Yihao Wang, Jincheng Lei
Fused silica glasses are of great importance for applications in optics, photonics, electronics, and biochemistry. However, their harsh processing nature still constrains the design and development of fused silica glasses for advanced applications. Additive manufacturing (AM) is among the promising techniques to improve the fabrication of fused silica glasses. Herein, we develop an integrated paste
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Understanding and modeling the plastic deformation of 3D printed concrete based on viscoelastic creep behavior Addit. Manuf. (IF 11.0) Pub Date : 2024-04-10 Kailun Xia, Yuning Chen, Yu Chen, Zijian Jia, Lutao Jia, Yueyi Gao, Yamei Zhang
3D printing concrete (3DPC) is susceptible to plastic deformation, for example, plastic shrinkage and plastic settlement, due to the absence of formwork. Monitoring and determining plastic deformation of 3DPC in large-scale construction remain challenging. In this study, we developed an analytical modeling method for predicting plastic deformation based on the creep behavior of 3DPC. A new creep model
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Fabrication of architecturally designed steel for improving isotropy of mechanical properties using directed energy deposition Addit. Manuf. (IF 11.0) Pub Date : 2024-04-10 KenHee Ryou, Seoung-Ho Lim, Kwang-Hyeok Lim, Seungeui Hong, Gi-Dong Sim, Shoichi Nambu, Pyuck-Pa Choi
As an excellent illustration of architectural alloy designs, multilayered structures, which incorporates high-strength and high-ductility alloys in their layered composition, can accomplish unusual combinations of strength and ductility. This is possible because the continuous microstructure consisting of a single phase without a phase boundary in each layer results in a uniform distribution of strain
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Study of powder entrainment in L-PBF process with maximum hatching space for higher process efficiency Addit. Manuf. (IF 11.0) Pub Date : 2024-04-10 Wei Hung, Yu-Lung Lo, Jia-Wei Guo
Laser powder bed fusion (LPBF) is a well-known metal additive manufacturing method with high processing flexibility, but the processing time and energy cost are important issues. As the objectives of this study, the optimal hatching is established not only for the quality but also for the process efficiency. The powder entrainment (from CFD-DEM simulation) and the melt pool geometry (from heat transfer
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Computational analysis and experiments of spatter transport in a laser powder bed fusion machine Addit. Manuf. (IF 11.0) Pub Date : 2024-04-09 Nicholas O’Brien, Syed Zia Uddin, Jordan Weaver, Jake Jones, Satbir Singh, Jack Beuth
This work focuses on how spatter particles are transported within a laser powder bed fusion (L-PBF) machine. The machine’s gas flow rate and salient flow features are studied with a computational fluid dynamics (CFD) model and are validated with experimental measurements of the flow near the build plate. The CFD model is also paired with a discrete phase model (DPM) to show how a spatter particle’s
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Experimental study of liquid aluminum droplet breakup characteristics based on a Drop-on-demand (DOD) magnetohydrodynamic actuation Addit. Manuf. (IF 11.0) Pub Date : 2024-04-09 Sheng-Wei Tian, Su-Rong Sun, Xiao-Chen Lin, Jin-Yue Geng, He-Ji Huang, Hai-Xing Wang, Jin-Wen Cao, Xian Meng, Cong Yan
In magnetohydrodynamic (MHD) drop-on-demand (DOD) actuation, Lorentz force generated in different excitation stages are exerted on the liquid metal jet to form a "push-pull" mechanism, which is crucial for generating accurate and repeatable metal droplets. In this study, the important parameters of the excitation current waveform in the magnetohydrodynamic (MHD) process, including the influence of
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Enhanced wear resistance of TiC/Ti6Al4V composites through changing TiC morphologies in laser direct energy deposition Addit. Manuf. (IF 11.0) Pub Date : 2024-04-09 Yongsheng Zheng, Xue Yan, Guowen Qiao, Yicheng Tang, Yue Geng, Zhutao Shao, Qian Bai
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Increasing the isotropy of 3D printed poly(ether ether ketone) using a combination of bimodal polymer blends and post-process thermal annealing Addit. Manuf. (IF 11.0) Pub Date : 2024-04-09 Austin W. Riggins, Jian H. Yu, Mark D. Dadmun
Tough, semi-crystalline polymers such as poly(ether ether ketone) (PEEK) have recently gained popularity as Material Extrusion (ME) 3D printing feedstocks, but exhibit significant anisotropy when printed using fused filament fabrication (FFF). In this study, we seek to improve interlayer adhesion in PEEK FFF samples by combining the use of bimodal molecular weight polymer blends and post-process thermal
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The enhancement of damage tolerance of 3D-printed high strength architected metallic glasses by unit cell shape design Addit. Manuf. (IF 11.0) Pub Date : 2024-04-08 Congrui Yang, Di Ouyang, Lei Zhang, Yongyun Zhang, Xing Tong, Haibo Ke, K.C. Chan, Weihua Wang
In this work, we developed a strategy that can simultaneously enhance the strength and energy absorption of 3D-printed architectural Zr-based bulk metallic glass (BMG) through unit cell shape design. Strut-based body-centered tetragonal (BCT) with different scaling degrees were incorporated into the conventional metallic glass architectures to avoid the fast propagation of main crack bands and induce
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Grain refinement and strengthening of additively manufactured Nb by doping TiC nanoparticle prepared via laser directed energy deposition Addit. Manuf. (IF 11.0) Pub Date : 2024-04-08 Da Liu, Wei Liu, Yuanyuheng Wang, Youxing Yu, Jiangbo Sha
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Non-planar material-extrusion additive manufacturing of multifunctional sandwich structures using carbon-reinforced polyetheretherketone (PEEK) Addit. Manuf. (IF 11.0) Pub Date : 2024-04-08 Juliette Pierre, Mathieu Verville, Gabriel Chenier, Rouhollah D. Farahani, Nicola Piccirelli, Martin Lévesque, Daniel Therriault
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Continuous transitions of triply periodic minimal surfaces Addit. Manuf. (IF 11.0) Pub Date : 2024-04-08 Lihao Tian, Bingteng Sun, Xin Yan, Andrei Sharf, Changhe Tu, Lin Lu
Triply periodic minimal surfaces (TPMS) have been extensively studied in functionally graded structures due to their excellent geometric and mechanical properties. However, existing methods often suffer from deformation and distortion due to inadequate TPMS period calculations, consequently compromising the mechanical performance of TPMS structures. In this paper, we investigate the period and phase
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Unraveling microstructure and mechanical response of an additively manufactured refractory TiVHfNbMo high-entropy alloy Addit. Manuf. (IF 11.0) Pub Date : 2024-04-07 Dingcong Cui, Bojing Guo, Zhongsheng Yang, Xin Liu, Zhijun Wang, Junjie Li, Jincheng Wang, Feng He
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Design and manufacture of near-net-shape metal-ceramic composites with gradient-layered structure and optimized damage tolerance Addit. Manuf. (IF 11.0) Pub Date : 2024-04-06 Ming-Yue Jiang, Xiang-Yu Meng, Jin Zhou, Zhen-Yu Wei, Hai-Feng Zhang, Ping Shen
Optimizing the composition and structure of materials in localized regions of the materials is an effective approach to enhance the material utilization efficiency and achieve a performance-on-demand design. However, it is challenging to achieve such design owing to limitations in manufacturing technology. In this study, we devised a method involving vat photopolymerization 3D printing and magnet-assisted
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Effect of yttrium nitrate coating on the vat photopolymerization forming process and sintering properties of aluminum nitride ceramics Addit. Manuf. (IF 11.0) Pub Date : 2024-04-05 Lifu Lin, Haidong Wu, Kunji Lin, Yehua Li, Peishen Ni, Donglin Lu, Pengfei Sheng, Shanghua Wu
In this study, a ball-milling method was successfully used to coat yttrium nitrate on the surface of aluminum nitride (AlN) powder and the effects of yttrium nitrate content on the AlN powder particle size, viscosity and curing behavior of the AlN suspension, and performance and microstructure of the sintered AlN bodies were investigated. The results indicated that the AlN powder surface coating significantly
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Cyclodextrins in 3D/4D printing for biomedical applications Addit. Manuf. (IF 11.0) Pub Date : 2024-04-05 Carmen Alvarez-Lorenzo, Alvaro Goyanes, Angel Concheiro
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Electron beam processing of organic ice for low-toxicity submicrometer additive manufacturing Addit. Manuf. (IF 11.0) Pub Date : 2024-04-05 Affan K. Waafi, Bingdong Chang, Joachim Lyngholm- Kjærby, Rubaiyet.I. Haque, Anpan Han
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Direct printing of conductive hydrogels using two-photon polymerization Addit. Manuf. (IF 11.0) Pub Date : 2024-04-04 Ketki M. Lichade, Shahrzad Shiravi, John D. Finan, Yayue Pan
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4D-Printed micro-tentacles exhibiting wide-spectrum deformability Addit. Manuf. (IF 11.0) Pub Date : 2024-04-04 Jingang Wang, Yuzhao Zhang, Jianchen Zheng, Hongji Guo, Ye Qiu, Xiaoduo Wang, Lianqing Liu, Haibo Yu
It has been widely reported that untethered micro-robots can access hard-to-reach regions within the body to perform a range of medical procedures. However, the narrow operating space limits the ability of such micro-robots to interact with the external environment. Here, inspired by chameleons, we propose a prehensile micro-tentacle with wide-spectral deformability using the micro four-dimensional
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Additive manufacturing process parameter design for variable component geometries using reinforcement learning Addit. Manuf. (IF 11.0) Pub Date : 2024-04-04 Ehsan Vaghefi, Seyedmehrab Hosseini, Amir Hossein Afsharinejad, Bart Prorok, Elham Mirkoohi
Ensuring consistent high quality across diverse components in additive manufacturing (AM) necessitates a rigorous and resource-intensive process of trial-and-error experimentation. In practical terms, this entails a substantial investment of time and resources. Addressing this challenge involves the integration of physics-based process simulations with general-purpose optimization algorithms, facilitating
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Functionally graded triply periodic minimal surface scaffold of HA-Al2O3 via Vat photopolymerization 3D printing Addit. Manuf. (IF 11.0) Pub Date : 2024-04-04 Qiuyu Liu, Qinchao Tang, Zhifeng Huang, Zhiwei Li, Xuye Wang, Pin Wen, Yi Bai, Fei Chen
Hydroxyapatite (HA) is widely used in scaffolds due to its high similarity in the composition to natural bone. However, the weak and fragile characteristics of synthetic HA limit its application. The strength of HA can be increased by the incorporation of alumina (AlO) to obtain composites with extraordinary compressive strength and biocompatibility. HA-AlO composites with different ratios were prepared
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Rethinking ductility—A study into the size-affected fracture of additively manufactured polymers Addit. Manuf. (IF 11.0) Pub Date : 2024-04-04 Zainab S. Patel, Abdulaziz O. Alrashed, Kush Dwivedi, Marco Salviato, Lucas R. Meza
Ductility, namely a material’s capacity for plastic deformation, is a key property for preventing fracture-driven failure in engineering parts. While some brittle materials are known to exhibit ductility at small scales, the underlying mechanics of such behaviors are not well understood. This work identifies size-affected fracture as a key mechanism for the origin of ductility in two-photon lithography
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Scalable path level thermal history simulation of powder bed fusion process validated by melt pool images Addit. Manuf. (IF 11.0) Pub Date : 2024-04-04 Xin Liu, Xingchen Liu, Neel Goldy Kumar, Paul Witherell
The thermal history of the powder bed fusion (PBF) process is critical due to its significant influences on the material properties, residual stress, and part warping or distortion. These quantities heavily affect the quality and performance of parts. The contact-aware path-level (CAPL) discretization approach (Zhang and Shapiro, 2018; Zhang et al., 2019; Zhang et al., 2022) was recently proposed to
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Porosity in wire-arc directed energy deposition of aluminum alloys: Formation mechanisms, influencing factors and inhibition strategies Addit. Manuf. (IF 11.0) Pub Date : 2024-04-04 Hao Yi, Liu Yang, Le Jia, Yuze Huang, Huajun Cao
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Uniform rate debinding for Si3N4 vat photopolymerization 3D printing green parts using a specific-stage stepwise heating process Addit. Manuf. (IF 11.0) Pub Date : 2024-04-03 Xuye Wang, Wenyan Duan, Zihuan Chen, Shan Li, Bingshan Liu, Gong Wang, Fei Chen
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Particle surface oxidation modification and particle gradation strategy for the preparation of high-strength SiC ceramics via vat photopolymerization Addit. Manuf. (IF 11.0) Pub Date : 2024-04-03 Zhang-Ao Shi, Jia-Min Wu, Zhi-Qiang Fang, Chen Mao, Li-Xiang Fu, Qi-Wen Wang, Shou-Lei Yang, Jing-Xian Zhang, Yu-Sheng Shi
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High-precision complex structured Sm-PMN-PT ceramics with large piezoelectric response manufactured by vat photopolymerization Addit. Manuf. (IF 11.0) Pub Date : 2024-04-03 Weigang Ma, Kun Zheng, Yi Quan, Qin Lian, Jian Zhuang, Chenyun Qi, Shuhao Qi, Jiahao Zhang, Hongyan Li, Wen Liu, Tianlong Zhao, Chunlong Fei, Wei Ren, Dichen Li
SmPb[(MgNb)Ti]O (Sm-PMN-PT) ceramics possess excellent piezoelectric performance and exhibit great potential in electronic device applications. However, traditional fabrication methods commonly difficult to prepare Sm-PMN-PT ceramics with complex structures, which restricts their applications. Additive manufacturing techniques offer novel approaches to preparing Sm-PMN-PT ceramics. In the current investigation
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Nano-twining and deformation-induced martensitic transformation in a duplex stainless steel 2205 fabricated by laser powder bed fusion Addit. Manuf. (IF 11.0) Pub Date : 2024-04-03 X.Y. He, H. Wang, X.Z. Liao, S.P. Ringer, N. Haghdadi, S. Primig
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Automated non-destructive 3D printing filament material properties monitoring based on electric permittivity, longitudinal encoding and diameter multi-axes real-time measurements Addit. Manuf. (IF 11.0) Pub Date : 2024-04-03 Jakub Aniulis, Grzegorz Dudzik, Krzysztof M. Abramski
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Design and manufacturing of aeroacoustic metamaterial: Textured rotor blades with enhanced acoustic and aerodynamic performance Addit. Manuf. (IF 11.0) Pub Date : 2024-04-02 Yae-Joon Yang, Seo-Hyeon Han, Sunuk Ahn, Jungwoo Kim, Seung Jae Lee, Keun Park
Unmanned aerial vehicles (UAVs), commonly referred to as drones, have attracted increasing attention as urban aerial mobility platforms. A pivotal consideration in their optimization is the reduction of rotor blade noise without compromising aerodynamic performance. This study endeavors to advance the field by developing aeroacoustic metamaterials tailored specifically for rotor blades, to concurrently
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Welding torch with coaxial wire feed and rotating electrode for wire-arc directed energy deposition Addit. Manuf. (IF 11.0) Pub Date : 2024-04-02 Masahiro Kawabata, Tomoaki Sasaki, Katsunori Wada, Shuhei Kanemaru, Yuji Nomura, Hiroyuki Sasahara
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Flow mechanisms and their influence on the properties of EGaIn-graphene-poly(ethylene) oxide composites during material extrusion-based additive manufacturing Addit. Manuf. (IF 11.0) Pub Date : 2024-04-02 Ruchira Tandel, Irmak Sargin, B. Arda Gozen
Polymer composites featuring room temperature liquid alloy particles complimenting other conductive fillers enable unique thermal and electrical properties. Direct-ink-writing approach is an intriguing processing path for these material systems, offering high resolution microstructural and property control. This paper investigates the composition-process-property relationships for material extrusion-based
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Crystal plasticity approach for predicting mechanical responses in wire-arc directed energy deposition of NbZr1 refractory alloy Addit. Manuf. (IF 11.0) Pub Date : 2024-03-30 Saiful Islam, Sainand Jadhav, Taejoon Park, Farhang Pourboghrat, Xuesong Fan, Peter K. Liaw, Duck Bong Kim
The refractory alloy, such as Niobium-1 wt% Zirconium (NbZr1) alloy, is a promising candidate for diverse applications in extreme environments. This study investigates an integrated experimental and computational methodology that can predict the mechanical properties of wire-arc directed energy deposited (DED) refractory NbZr1 alloy. The effect of large columnar grains with strong texture induced by
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Apparent properties of porous support structure with imperfections in metal additive manufacturing Addit. Manuf. (IF 11.0) Pub Date : 2024-03-28 Takumi Oshima, Naoki Takano
In the laser powder bed fusion (L-PBF) additive manufacturing (AM) of metals, support structure is necessary for overhang shaped components. This support is porous with periodic 2D lattice microstructure. The purpose of this paper is to predict numerically the apparent properties of porous support made by titanium alloy, Ti-6Al-4V. One of the problems involved in L-PBF AM is the geometrical imperfections
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Custom-form iron trifluoride Li-batteries using material extrusion and electrolyte exchanged ionogels Addit. Manuf. (IF 11.0) Pub Date : 2024-03-28 Jorge A. Cardenas, John P. Bullivant, Bryan R. Wygant, Aliya S. Lapp, Nelson S. Bell, Timothy N. Lambert, Laura C. Merrill, A. Alec Talin, Adam W. Cook, Eric Allcorn, Katharine L. Harrison
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Multi-scale microstructure manipulation of an additively manufactured CoCrNi medium entropy alloy for superior mechanical properties and tunable mechanical anisotropy Addit. Manuf. (IF 11.0) Pub Date : 2024-03-27 Chenze Li, Manish Jain, Qian Liu, Zhuohan Cao, Michael Ferry, Jamie J. Kruzic, Bernd Gludovatz, Xiaopeng Li
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Additively manufactured copper alloy with heterogeneous nanoprecipitates-dislocation architecture for superior strength-ductility-conductivity synergy Addit. Manuf. (IF 11.0) Pub Date : 2024-03-26 Liqiang Wang, Shuo Qu, Huangliu Fu, Xin Zhou, Zongxin Hu, Yaojie Wen, Baicheng Zhang, Bin Gan, Xu Song, Yang Lu
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Simultaneous enhancement of mechanical and functional properties by heat-treatment in CuAlNi shape memory alloys fabricated by laser powder bed fusion Addit. Manuf. (IF 11.0) Pub Date : 2024-03-24 Yankun Zhang, Lianyong Xu, Lei Zhao, Wei Chen, Minqian Liu, Wenjing Ren, Yongdian Han
Laser powder bed fusion (LPBF) is a promising manufacturing method for fabricating Cu-based shape memory alloys (SMAs), but further performance improvement is needed to ensure service stability and broaden the engineering applications. To achieve simultaneous enhancement of mechanical and functional properties of CuAlNi ternary SMAs fabricated via the LPBF process, this study conducts isochronous and
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Creep deformation and cavitation in an additively manufactured Al-8.6Cu-0.4Mn-0.9Zr (wt%) alloy Addit. Manuf. (IF 11.0) Pub Date : 2024-03-24 Jovid U. Rakhmonov, Richard Michi, Sumit Bahl, Obaidullah Rahman, Curtis Frederick, Amir Koushyar Ziabari, David C. Dunand, Ryan Dehoff, Alex Plotkowski, Amit Shyam
Creep deformation and cavitation were investigated at 300 ºC in both tension and compression for an additively manufactured Al-8.6Cu-0.5Mn-0.9Zr (wt%) alloy in the as-fabricated state and after various aging treatments (aging at 300 °C/200 h or 350 °C/24 h and overaging at 400 °C/200 h). Creep mechanisms at 300 °C were determined by relating the measured creep response to corresponding microstructural
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A new approach to design advanced superalloys for additive manufacturing Addit. Manuf. (IF 11.0) Pub Date : 2024-03-22 Wei Song, Junying Yang, Jingjing Liang, Nannan Lu, Yizhou Zhou, Xiaofeng Sun, Jinguo Li
A novel approach centered on a high Ta/Al ratio and a significant dependence on the boundary composition addressed the challenges in the manufacturability and material performance of additive-manufactured nickel (Ni)-based superalloys. This approach integrated alloy composition, defect management, and mechanical behavior considerations. This study investigated the impact of this approach on microstructural
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Powder bed fusion repair of titanium with surface damage: Molecular dynamics study on microstructure and mechanical properties Addit. Manuf. (IF 11.0) Pub Date : 2024-03-22 Yuxuan Chen, Yan Yin, Min Yi
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Volumetric additive manufacturing: A new frontier in layer-less 3D printing Addit. Manuf. (IF 11.0) Pub Date : 2024-03-21 Daniel J. Whyte, Egan H. Doeven, Alessandra Sutti, Abbas Z. Kouzani, Scott D. Adams
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MeltpoolGAN: Melt pool prediction from path-level thermal history Addit. Manuf. (IF 11.0) Pub Date : 2024-03-20 Hongrui Chen, Xin Liu, Xingchen Liu, Paul Witherell
In metal laser powder bed fusion, a laser beam rapidly scans through a thin layer of powder. The laser heats up and liquefies the powder forming a melt pool. The melt pool characteristics affect the material property and physical performance of the part. Physical simulations of melt pool dynamics are computationally expensive and are often limited to a short laser scan. Alternatively, Finite Element
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Experimental quantification of inward Marangoni convection and its impact on keyhole threshold in laser powder bed fusion of stainless steel Addit. Manuf. (IF 11.0) Pub Date : 2024-03-19 Jian Yang, Lucas Maximilian Schlenger, Milad Hamidi Nasab, Steven Van Petegem, Federica Marone, Roland E. Logé, Christian Leinenbach
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Effect of impinging behavior annular jet shielding gas and printing substrate on metal droplet stable ejection Addit. Manuf. (IF 11.0) Pub Date : 2024-03-19 Yi Zhou, Lehua Qi, Hongcheng Lian, Jun Luo, Lin Su
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Rapid additive manufacturing of all-carbon, all-dielectric metastructures Addit. Manuf. (IF 11.0) Pub Date : 2024-03-19 Arun Jaiswal, Sweta Rani, Gaurav Pratap Singh, Thachanamoorthy Archana, Mahbub Hassan, Aklima Nasrin, Vincent G. Gomes, Sumit Saxena, Shobha Shukla
Metamaterials have been explored to achieve extraordinary response to incident radiations, not accessible to conventional materials. Metamaterial attributes are derived from spatially arranged sub-wavelength resolved metaelements. Additive manufacturing technologies offer capabilities to fabricate complex metastructures with novel remarkable responses. Two-photon polymerization (TPP) based additive