Microstructure and mechanical properties of SiC particles reinforced Mg-8Al-1Sn magnesium matrix composites fabricated by powder metallurgy

被引：15

作者：

Luo, D.

Pei, C. -H.

Rong, J.

Wang, H. -Y. ^{[1
]}

Li, Q.

Jiang, Q. -C.

机构：

[1] Jilin Univ, Key Lab Automobile Mat, Minist Educ, Nanling Campus,5988 Renmin St, Changchun 130025, Peoples R China

来源：

POWDER METALLURGY | 2015年 / 58卷 / 05期

基金：

国家教育部博士点专项基金资助;

关键词：

Magnesium; Powder metallurgy; Microstructure; Mechanical properties; TENSILE PROPERTIES; ALLOY; SIZE; TEMPERATURE; BEHAVIOR;

D O I：

10.1179/1743290114Y.0000000118

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The new type of Mg-8Al-1Sn (AT81) magnesium matrix composites reinforced with different volume fractions (5, 10, 15, 20, 25 and 30 vol.-%) of SiC particles (average size of 10 mu m) was fabricated by powder metallurgy. With the increasing volume fraction of SiC particles (SiCp), the particles gradually show more homogeneous distribution. Compared with the AT81 alloy, the yield strength (YS) and ultimate compressive strength of the SiCp/AT81 composites are improved simultaneously. With the increasing SiCp from 0 to 30 vol.-%, the YS and ultimate compressive strength increase from 69 to 239 MPa and 286 to 385 MPa respectively, while the corresponding fracture strain (epsilon) decreases from 19.3 to 4.8%. The improvement of the YS and ultimate compressive strength of the SiCp/AT81 composites benefits from the more homogeneous microstructure due to the increase in the SiC particles.

引用

页码：349 / 353

页数：5

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