Tensile properties of hot extruded Mg-Zn-Nd-Y-Zr alloy at elevated temperatures

被引：2

作者：

Zhou, Xiao ^{[1
]}

Zhou, Haitao ^{[1
]}

Zhang, Zhendong ^{[2
]}

Liu, Ruirui ^{[1
]}

Liu, Libin ^{[1
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China

[2] Northeastern Univ, Sch Mat & Met Engn, Shenyang 110819, Peoples R China

来源：

ADVANCED MATERIALS, PTS 1-3 | 2012年 / 415-417卷

关键词：

Mg-Zn-Nd-Y-Zr alloy; Elevated temperature; tensile properties; MECHANICAL-PROPERTIES; MICROSTRUCTURE; DEFORMATION; CRYSTALS; BEHAVIOR;

D O I：

10.4028/www.scientific.net/AMR.415-417.1157

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mechanical properties of extruded Mg-Zn-Nd-Y-Zr alloy are investigated by tensile tests at various temperatures range from room temperature to 350 degrees C with strain rates of 6.0x10(-4)-6.0x 10(-1)S(-1) It is found that the peak decrease with increasing temperature and decreasing strain rate, while the elongation increases with increasing temperature and decreasing strain rate. When deformation temperature is over 250 degrees C, superplasticity occurs. This is ascribed to grain boundary sliding accommodated cavities growth.. At low temperature, the peak stress are a relatively higher than that of ZK60 alloy. This is explained by the grain refining effect and the precipitates of Mg9Nd and Mg6Zn3Y2.

引用

页码：1157 / +

页数：3

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