Al-Si5Cu3/ZrB2 原位增强金属基复合材料的力学和磨损行为

IF 2.6 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING International Journal of Metalcasting Pub Date : 2024-05-07 DOI:10.1007/s40962-024-01349-x
J. Jenix Rino, A. S. Vivekananda, N. Thangapandian, Balasivanandha Prabu Shanmugavel
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引用次数: 0

摘要

在本研究中,通过盐熔反应路线制造了原位 ZrB2/Al-Si5Cu3 铝合金复合材料,其中添加了不同重量分数的 ZrB2 增强材料,即 2.5%、5% 和 7.5%。对复合材料的密度、硬度、拉伸强度、弯曲强度、冲击强度和磨损性能进行了测试。研究了增强材料的重量百分比对性能的影响。与基体材料相比,复合材料密度的增加证实了原位增强相的形成。微观结构显示,在复合材料中所有重量百分比的增强材料中,增强颗粒在基体上都有理想的分布。在基体中形成的 ZrB2 颗粒的粒径范围在 255 纳米到 955 纳米之间,由于颗粒诱导凝固,晶粒大小从 242 微米减小到 110 微米。与母合金相比,含有 2.5、5 和 7.5 重量百分比 ZrB2 增强材料的复合材料的硬度分别提高了 8%、17.5% 和 34%。ZrB2 的重量百分比在 5 重量百分比以下时,拉伸强度和伸长率有所提高,从 115 兆帕提高到 183 兆帕,之后拉伸强度有所下降。拉伸断裂图的详细分析表明,重量分数越高,ZrB2 增强颗粒的团聚会导致强度下降。抗折强度结果也证实,5 重量百分比 ZrB2/Al-Si5Cu3 的抗折强度从基体材料的 337 兆帕增加到 672 兆帕。磨损研究表明,含 7.5 wt.% ZrB2 的复合材料具有更高的耐磨性。不过,冲击强度并未因增强材料的重量百分比而出现任何差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Mechanical and Wear Behavior of Al-Si5Cu3/ZrB2 In-Situ Reinforced Metal Matrix Composite

In this study, the in-situ ZrB2/Al-Si5Cu3 aluminum alloy composites were fabricated through the salt-melt reaction route with different weight fractions of ZrB2 reinforcements, i.e., 2.5%, 5%, and 7.5%. The composites were tested for their density, hardness, tensile strength, flexural strength, impact strength, and wear properties. The influence of reinforcement on the properties was studied concerning the wt.% of reinforcement. The increase in density of composites compared to the matrix material confirms the formation of the in-situ reinforcement phase. The microstructure showed a desirable distribution of reinforced particles over the matrix at all weight fractions of the reinforcements in the composites. The ZrB2 particles formed in the matrix have particle sizes in the range from 255 nm to 955 nm and the grain size has been reduced from 242 microns to 110 microns as the result of particle-induced solidification. The hardness of the composites containing ZrB2 reinforcements of 2.5, 5, and 7.5 wt.% showed improvement by 8%, 17.5%, and 34% respectively compared to the parent alloy. There is an improvement in the tensile strength and elongation for the wt.% of ZrB2 up to 5 wt.%, from 115 MPa to 183 MPa, after which, there was a drop in the tensile strength. The detailed analysis of tensile fractography shows that the agglomerated ZrB2 reinforced particles at higher weight fractions lead to a decrease in strength. The results of flexural strength also affirm the strength of 5 wt.% ZrB2/Al-Si5Cu3 increased from the matrix material’s flexural strength of 337 MPa to 672 MPa. The wear study shows that the composite with 7.5 wt.% ZrB2 possesses a higher wear resistance. However, the impact strength did not show any differences in the weight % of reinforcement.

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来源期刊
International Journal of Metalcasting
International Journal of Metalcasting 工程技术-冶金工程
CiteScore
4.20
自引率
42.30%
发文量
174
审稿时长
>12 weeks
期刊介绍: The International Journal of Metalcasting is dedicated to leading the transfer of research and technology for the global metalcasting industry. The quarterly publication keeps the latest developments in metalcasting research and technology in front of the scientific leaders in our global industry throughout the year. All papers published in the the journal are approved after a rigorous peer review process. The editorial peer review board represents three international metalcasting groups: academia (metalcasting professors), science and research (personnel from national labs, research and scientific institutions), and industry (leading technical personnel from metalcasting facilities).
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