Processing map for hot working of as extruded AZ31B magnesium alloy

被引：0
|
作者：
Huang, GS [1 ]
Huang, GJ [1 ]
Wang, LY [1 ]
Pan, FS [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2005年 / 15卷 / 04期
关键词：
magnesium alloy; AZ31B; processing map; hot deformation; flow instability;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The deformation behavior of AZ31B magnesium alloy as extruded under hot compression conditions was characterized in the temperature range of 200 - 400 degrees C and strain rate range of 0.001 - 1 s(-1). The processing maps were obtained at different strains. The results show that the map exhibits flow instabilities as two domains. The domain at beyond 300 degrees C and strain rate of 1 s(-1) appears with a peak efficiency of power dissipation about 56% occurring. This domain is expected to happen in a hot process, such as hot rolling, hot extrusion and hot forging. There is high efficiency of power dissipation at temperature beyond 350 degrees C and strain rate 0.001 s(-1). Such domains suggest the occurrence of superplastic deformation.
引用
收藏
页码：813 / 817
页数：5
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