Effect of isothermal homogenization on microstructure and mechanical properties of the Mg-5Y-4Gd-0.5Zn-0.4Zr alloy

被引：17
|
作者：
Liu, Ke [1 ]
Wang, Xudong [1 ,2 ]
Wen, Kai [1 ]
机构：
[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
[2] Beijing Inst Aeronaut Mat, Beijing 10085, Peoples R China
来源：
MATERIALS & DESIGN | 2013年 / 52卷
关键词：
Magnesium alloy; Long periodic stacking ordered; Tensile properties; SOLIDIFIED MG97ZN1Y2 ALLOY; STACKING ORDERED PHASE; MAGNESIUM ALLOY; ZN; STRENGTH; DEFORMATION;
D O I：
10.1016/j.matdes.2013.06.048
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and mechanical properties of the Mg-5Y-4Gd-0.5Zn-0.4Zr alloy have been investigated. The results suggested that the 14H long periodic stacking ordered (LPSO) structure was formed during isothermal homogenization. Furthermore, the presence of the 14H LPSO structure resulted in refined microstructure and weak texture while harmful to improve ageing hardening response after hot extrusion. The Mg-5Y-4Gd-0.5Zn-0.4Zr alloy after homogenization for 16 h at 500 degrees C (as-extruded alloy B) followed by subsequent hot extrusion displayed the highest peak hardness value during ageing at 220 degrees C. The yield tensile strength and the ultimate tensile strength of the peak-aged alloy B were about 300 MPa and 370 MPa, respectively. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1035 / 1042
页数：8
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