Application of cyclic upsetting-extrusion to semi-solid processing of AZ91D magnesium alloy

被引：7
|
作者：
Tao, Jian-quan [1 ]
Jiang, Ju-fu [2 ]
Chen, Hong [1 ]
Xiao, Yuan-lun [1 ]
Zhang, Rong-chao [1 ]
Hu, Qing-hua [1 ]
Zhao, Jun [1 ]
Zhao, Qiang [1 ]
机构：
[1] Southwest Tech & Engn Inst, Chongqing 400039, Peoples R China
[2] Harbin Inst Technol, Sch Mat & Engn, Harbin 150001, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2013年 / 23卷 / 04期
关键词：
AZ91D magnesium alloy; semi-solid processing; cyclic upsetting-extrusion; mechanical properties; microstructure; TENSILE MECHANICAL-PROPERTIES; CHANNEL ANGULAR EXTRUSION; MICROSTRUCTURAL EVOLUTION; MG-AL;
D O I：
10.1016/S1003-6326(13)62547-9
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The microstructural evolution of AZ91D magnesium alloy prepared by means of the cyclic upsetting-extrusion and partial remelting was investigated. The effects of remelting temperature and holding time on microstructure of semi-solid AZ91D magnesium alloy were studied. Furthermore, tensile properties of thixoextruded AZ91D magnesium alloy components were determined. The results show that the cyclic upsetting-extrusion followed by partial remelting is effective in producing semi-solid AZ91D magnesium alloy for thixoforming. During the partial remelting, with the increase of remelting temperature and holding time, the solid grain size increases and the degree of spheroidization tends to be improved. The tensile mechanical properties of thixoextruded AZ91D magnesium alloy components produced by cyclic upsetting-extrusion and partial remelting are better than those of the same alloy produced by casting.
引用
收藏
页码：909 / 915
页数：7
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