Effects of Si content on the microstructure and tensile strength of an in situAl/Mg_2Si composite
Effects of Si content on the microstructure and tensile strength of an in situAl/Mg_2Si composite
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DOI：
10.1557/jmr.1999.0012
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发表时间：
1999-01
影响因子：
2.7
通讯作者：
Jian Zhang;Yu-qing Wang;Bingping Yang;Ben-lian Zhou
中科院分区：
文献类型：
--
作者：
Jian Zhang;Yu-qing Wang;Bingping Yang;Ben-lian Zhou
采用常规压铸工艺原位制备了Al/Mg_2Si复合材料，研究了Si含量对复合材料显微组织和抗拉强度的影响。实验结果表明，在Al/Mg_2Si复合材料中，Si含量的增加导致了基体的延展性和原位颗粒的均匀分布。细化的微观组织使金属基复合材料的强度和塑性都有明显提高。分析了外加Si对Al/Mg_2Si复合材料凝固过程和断裂特性的影响。
Al/Mg_2Si composites were in situ fabricated by the usual die-casting technique, and effects of the Si contents in the composites on microstructures and tensile strengths were investigated. Experimental results show that extra Si contents in Al/Mg_2Si composites induce a ductile matrix and a uniform distribution of in situ particles. The refined microstructures lead to an obvious increase in both strength and ductility of the metal matrix composites (MMCs). The effects of extra Si on both the solidification process and fracture characteristics of the Al/Mg_2Si composites were analyzed.