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Evaluating the Impact of Si3N4 on the Metallurgical and Mechanical Behaviour of Stir Cast Cu–Sn/Si3N4 Metal Matrix Composite for Potential Automobile Application
International Journal of Metalcasting ( IF 2.6 ) Pub Date : 2022-09-15 , DOI: 10.1007/s40962-022-00856-z
V. Govind , Ajan Vishnu Anandhan , A. J. Jayakrishna , A. Anuranjan , S. Sooraj , Karthik V. Shankar , M. C. Akshay

The current research was performed to determine the mechanical, metallurgical, and physical performance of regular bronze alloy (Cu–Sn) alloy reinforced with silicon nitride (5, 10, 15 wt%). The metal matrix composite was fabricated through a stir casting technique which was then poured into a metal mould to produce cast rods of dimensions ф 32mm × 140 mm in length. The metallurgical study was conducted on all the samples using field emission scanning electron microscopy, XRD analysis, and transmission electron microscopy analysis on 5 wt% reinforced composites. It was observed that metal matrix composite reinforced with 5 wt% of Si3N4 revealed uniform distribution, pore-free, and perfect bonding of reinforcement with the matrix. The same sample showed a high hardness, tensile strength, yield strength, and low ductility value compared to regular bronze alloy. It was also noted that adding 10 and 15 wt% of ceramic reinforcement to the bronze matrix decreased the mechanical characteristics of the fabricated composites owing to the development of clusters and agglomerated state of Si3N4 ceramic particles in the matrix. The fabricated 5 wt% of Si3N4-based metal matrix composite showed enhanced performances suggesting its use in manufacturing several parts for the automotive and marine industry.



中文翻译:

评估 Si3N4 对潜在汽车应用的搅拌铸造 Cu-Sn/Si3N4 金属基复合材料的冶金和机械行为的影响

目前的研究旨在确定用氮化硅(5、10、15 wt%)增强的普通青铜合金 (Cu-Sn) 合金的机械、冶金和物理性能。通过搅拌铸造技术制造金属基复合材料,然后将其倒入金属模具中以生产尺寸为ф32mm×140mm长的铸棒。使用场发射扫描电子显微镜、XRD 分析和透射电子显微镜分析对 5 wt% 的增强复合材料对所有样品进行冶金研究。观察到用 5 wt% Si 3 N 4增强的金属基复合材料显示出均匀分布,无孔,以及增强与基体的完美结合。与普通青铜合金相比,同一样品显示出较高的硬度、抗拉强度、屈服强度和较低的延展性值。还注意到,在青铜基体中添加 10 和 15 wt% 的陶瓷增强材料会降低所制造复合材料的机械特性,这是由于基体中 Si 3 N 4陶瓷颗粒的簇和团聚状态的发展。制造的 5 wt% 的 Si 3 N 4基金属基复合材料表现出增强的性能,表明其可用于制造汽车和船舶工业的多个零件。

更新日期:2022-09-16
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