Development of high strength Mg alloys by MA-HDH P/M process

被引：0
|
作者：
Matsuda, M
Yoshimoto, S
Kawamura, Y
Ishikawa, K
Nishida, M
机构：
[1] Kumamoto Univ, Fac Engn, Dept Mech Engn & Mat Sci, Kumamoto 8608555, Japan
[2] Kumamoto Univ, Grad Sch Sci & Technol, Kumamoto 8608555, Japan
[3] Kitami Inst Technol, Dept Mat Sci, Kitami, Hokkaido 0908507, Japan
来源：
MAGNESIUM ALLOYS 2003, PTS 1 AND 2 | 2003年 / 419-4卷
关键词：
magnesium alloy; mechanical alloying; magnesium hydride; dehydrogenation; mechanical properties;
D O I：
10.4028/www.scientific.net/MSF.419-422.739
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
MA-HDH P/M process for the production of Mg bulk alloy has been established by using MgH2 powders as the starting material. The as-extruded Mg95Zn2.5Zr2.5 bulk alloy of MAed powders showed high compressive yield strength of 613 MPa, which was originated from the refinement of hcp-Mg grains, the solid solution hardening of Zn and Zr, and the precipitation hardening by MgO fine particles. The compressive yield strength of the MA-HDH P/M Mg95Zn2.5Zr2.5 alloy annealed at 823K for 10.8 ks was as high as that of the as-extruded Mg95Zn2.5Zr2.5 bulk alloy This seems to be due to the suppression of the hcp-Mg grain growth by the densely dispersed MgO fine particles.
引用
收藏
页码：739 / 744
页数：6
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