High-Temperature Tensile and Compressive Behavior of Peak-Aged Sand-Cast Mg-10Gd-3Y-0.5Zr Alloy

被引：11

作者：

Chen, Xiangjun ^{[1
,2
]}

Liu, Wencai ^{[1
,2
]}

Wu, Guohua ^{[1
,2
]}

Li, Yanlei ^{[1
,2
]}

Li, Zhongquan ^{[3
]}

Zhang, Song ^{[1
,2
]}

Ding, Wenjiang ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Key State Lab Met Matrix Composite, Shanghai 200240, Peoples R China

[3] Shanghai Aviat Precis Machinery Res Inst, Shanghai 201600, Peoples R China

来源：

ADVANCED ENGINEERING MATERIALS | 2016年 / 18卷 / 04期

基金：

中国国家自然科学基金;

关键词：

RARE-EARTH-ELEMENTS; MECHANICAL-PROPERTIES; YIELD ASYMMETRY; HARDENING RESPONSE; CREEP-PROPERTIES; HIGH-STRENGTH; MG-Y; GD; MICROSTRUCTURE; ZR;

D O I：

10.1002/adem.201500367

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The uniaxial tensile and compressive behavior of the peak-aged sand-cast Mg-10Gd-3Y-0.5Zr alloy from 25 to 250 degrees C is investigated. The results show that the alloy exhibits excellent high-temperature tensile and compressive properties compared with other magnesium alloys. The tensile yield stress and ultimate tensile strength remain unchanged, while the compressive yield strength slightly increases when testing temperature rises from 25 to 150 degrees C. This can be attribute to the metastable (cbco) phase and the fine ductility of the alloy at high temperature. The alloy shows tension-compression yield asymmetry which could be associated to the pyramidal < c+a > slip and extension twinning. In addition, the fracture mechanisms of the tested alloy at different temperatures are studied systematically.

引用

页码：671 / 677

页数：7

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