Flow Stress Correction of AZ80 Magnesium Alloy for Deformation Heating at High Strain Rates during Hot Compression

被引:2
|
作者
Lou Yan [1 ]
Li Luoxing [2 ]
Luan Na [2 ]
机构
[1] Shenzhen Univ, Coll Mechatron & Control Engn, Shenzhen 518060, Peoples R China
[2] Hunan Univ, Coll Mat Sci & Engn, Changsha, Peoples R China
关键词
AZ80; alloy; Correction; Flow stress; Deformation heating; FEM simulation;
D O I
10.4028/www.scientific.net/AMR.129-131.1326
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Accurate description of the material flow stress behaviour is an essential requirement for FEM simulation of metal forming processes. In the present hot compression tests of AZ80 magnesium alloy were performed on Gleeble 3500 at strain rates between 0.01-50s-1 and deformation temperatures between 300-450 degrees C to determine the flow stress data of the AZ80 magnesium alloy. It was noticed that with increasing strain rate, deformation heating become more pronounced since there is no time for heat escaping during hot compression tests. Thus, a flow stress correction for deformation heating at high strain rates was carried out for the calculation of the constants of constitutive equation. Validation tests were then performed. Good agreements between the predicted and measured values in extrusion pressure were achieved.
引用
收藏
页码:1326 / +
页数:2
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