当前位置: X-MOL 学术Indian J. Eng. Mater. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Influence of TAC/TI/Si3N4 on mechanical and corrosion performance of AA7075 alloy matrix composite processed by stir processing route
Indian Journal of Engineering & Materials Sciences ( IF 0.615 ) Pub Date : 2022-07-06
J Pradeep Kumar, D S Robinson Smart, Kuldeep Kr Saxena

In modernistic years, Metal Matrix Composites (MMCs) are becoming enchanting in fields of aerospace, military, defence and automobile applications reason being they offer merit such as high strength to weight proportion, good tribological, good corrosion resistance, excellent fatigue and creep performance and good bending behaviour etc. In the current research, an attempt was made to synthesize AA7075 blended with distinct wt% of Titanium (Ti), Tantalum Carbide (TaC) and Silicon Nitride (Si3N4) multi hybrid MMCs were examined. Microstructural, flexural, corrosion and low cycle fatigue aspects of the developed multi hybrid MMCs were examined as per ASTM standard. The brittleness of Si3N4, TaC and Ti particulates structured with the interface betwixt matrix culminates in increment in the flexural strength of the composite. The bending analysis clearly shows that, TaC and Si3N4 are the major contributing materials for flexural aspect because the presence of hard ceramic particulates restricts the dislocation movement by providing additional strength. Microstructural analysis reveals the existence of reinforcements. Also, homogeneous dissemination and good interfacial bonding betwixt the matrix and reinforcement particulates were noticed. AA7075 reinforced with 1 wt% Ti, 6 wt% Si3N4 and 0.5 wt% TaC operated at higher load (1500 N) and higher number of cycles 14103 cycles with a stable strain rate. The number of cycles to failure was observed to be enhanced for the matured composites on account of an inconsequential percentage of induced plastic strain.

中文翻译:

TAC/TI/Si3N4对搅拌工艺路线加工AA7075合金基复合材料力学性能和腐蚀性能的影响

在现代时代,金属基复合材料 (MMC) 在航空航天、军事、国防和汽车应用领域变得令人着迷,因为它们具有强度重量比高、摩擦学性能好、耐腐蚀性好、疲劳和蠕变性能优异等优点。良好的弯曲性能等。在目前的研究中,尝试合成 AA7075 与不同 wt% 的钛 (Ti)、碳化钽 (TaC) 和氮化硅 (Si3N4) 多杂化 MMC 混合。根据 ASTM 标准检查了开发的多混合 MMC 的微观结构、弯曲、腐蚀和低周疲劳方面。Si3N4、TaC 和 Ti 颗粒的脆性与基体之间的界面结构在复合材料的抗弯强度增加中达到顶峰。弯曲分析清楚地表明,TaC 和 Si3N4 是弯曲方面的主要贡献材料,因为硬质陶瓷颗粒的存在通过提供额外的强度来限制位错运动。微观结构分析揭示了增强物的存在。此外,注意到基体和增强颗粒之间的均匀分布和良好的界面结合。AA7075 用 1 wt% Ti、6 wt% Si3N4 和 0.5 wt% TaC 增强,在更高的负载 (1500 N) 和更高的循环次数 14103 循环下运行,具有稳定的应变率。由于诱导塑性应变的百分比无关紧要,成熟复合材料的失效循环次数被观察到增加。TaC 和 Si3N4 是弯曲方面的主要贡献材料,因为硬质陶瓷颗粒的存在通过提供额外的强度来限制位错运动。微观结构分析揭示了增强物的存在。此外,注意到基体和增强颗粒之间的均匀分布和良好的界面结合。AA7075 用 1 wt% Ti、6 wt% Si3N4 和 0.5 wt% TaC 增强,在更高的负载 (1500 N) 和更高的循环次数 14103 循环下运行,具有稳定的应变率。由于诱导塑性应变的百分比无关紧要,成熟复合材料的失效循环次数被观察到增加。TaC 和 Si3N4 是弯曲方面的主要贡献材料,因为硬质陶瓷颗粒的存在通过提供额外的强度来限制位错运动。微观结构分析揭示了增强物的存在。此外,注意到基体和增强颗粒之间的均匀分布和良好的界面结合。AA7075 用 1 wt% Ti、6 wt% Si3N4 和 0.5 wt% TaC 增强,在更高的负载 (1500 N) 和更高的循环次数 14103 循环下运行,具有稳定的应变率。由于诱导塑性应变的百分比无关紧要,成熟复合材料的失效循环次数被观察到增加。注意到基体和增强颗粒之间的均匀分布和良好的界面结合。AA7075 用 1 wt% Ti、6 wt% Si3N4 和 0.5 wt% TaC 增强,在更高的负载 (1500 N) 和更高的循环次数 14103 循环下运行,具有稳定的应变率。由于诱导塑性应变的百分比无关紧要,成熟复合材料的失效循环次数被观察到增加。注意到基体和增强颗粒之间的均匀分布和良好的界面结合。AA7075 用 1 wt% Ti、6 wt% Si3N4 和 0.5 wt% TaC 增强,在更高的负载 (1500 N) 和更高的循环次数 14103 循环下运行,具有稳定的应变率。由于诱导塑性应变的百分比无关紧要,成熟复合材料的失效循环次数被观察到增加。
更新日期:2022-07-06
down
wechat
bug