SiCp含量对SiCp/Al-1.2Mg-0.6Si铝基复合材料组织和性能影响
Influence of SiCp Content on Microstructure and Properties of SiCp/Al-1.2Mg-0.6Si Aluminum Matrix Composites
孟达 1王惠梅 2杨磊 2范玉虎 2余申卫 2王成辉 2汪勇 2曹栋2
作者信息
- 1. 海装驻咸阳地区军事代表室,陕西 兴平 713100
- 2. 中国船舶集团有限公司第十二研究所,陕西 兴平 713102
- 折叠
摘要
采用粉末冶金法制备SiCp/Al-1.2Mg-0.6Si铝基复合材料,分析了该复合材料的均匀性和界面结合情况,探讨了几种体积分数该复合材料的显微组织和性能变化.结果表明,SiC颗粒和基体之间的界面清晰平滑,界面结合良好,但随着热压温度的增加,SiC与基体间的微观缩孔和析出相逐渐增多.随着SiC颗粒含量的增加,材料的弹性模量、热导率显著提高,弯曲强度先升高后下降,而热膨胀系数逐渐降低.
Abstract
The powder metallurgy method was used to prepare SiCp/Al-1.2Mg-0.6Si aluminum matrix composites,the uniformity and interfacial bonding of the composites was analyzed,and the changes of the microstructure and properties of the composites with several volume fraction were discussed.The results show that the interface between SiC particles and the matrix is clear and smooth with good interfacial bonding,but as the hot pressing temperature increases,the micro-pores and precipitates between SiC and the matrix gradually increase;as the content of SiC particles increases,the elastic modulus and thermal conductivity of the material significantly increase,the bonding strength first increases and then decreases,and the coefficient of thermal expansion gradually decreases.
关键词
SiCp/组织和性能/SiCp/Al-1.2Mg-0.6Si铝基复合材料Key words
SiCp/microstructure and properties/SiCp/Al-1.2Mg-0.6Si composites引用本文复制引用
出版年
2024
NETL
NSTL
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