Dynamic mechanical properties and constitutive relationship of particle-reinforced AZ91D composites

被引:5
|
作者
Wei, Junlei [1 ]
Wang, Genwei [1 ]
Ji, Xinkuo [1 ]
Deng, Kunkun [2 ]
Sha, Fenghuan [1 ]
机构
[1] Taiyuan Univ Technol, Coll Mech, Shanxi Key Lab Mat Strength & Struct Impact, Taiyuan 030024, Shanxi, Peoples R China
[2] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
关键词
Mechanical properties; Particulate reinforced; Dynamic loadings; Temperature rise; Strain rate sensitivity; STRAIN-RATE; C-SF/AZ91D COMPOSITES; DEFORMATION BEHAVIORS; SIC NANOPARTICLES; MAGNESIUM ALLOY; COMPRESSION; EXTRUSION;
D O I
10.1016/j.jallcom.2018.06.049
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The flow stress behavior of 10 vol % silicon carbide particulate reinforced AZ91D composites was investigated by compression tests. The addition of silicon carbide particles improves the strength of the composites enormously, three main mechanisms account for this behavior. Positive strain rate effect on yield strength under dynamic compression is available, and the mechanisms for strain rate sensitivity is analyzed. The adiabatic temperature rise converted from plastic deformation work at various strain rates is calculated, and the modified J-C model is employed to characterize the flow stress curves. (C) 2018 Published by Elsevier B.V.
引用
收藏
页码:210 / 214
页数:5
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