Hot Compression Deformation Behavior of Mg-Gd-Nd-Zr Heat-Resistant Magnesium Alloy

International Conference on Materials Sciences and Nanomaterials

材料科学;物理学

Xin, Yanhui^1 ; Li, Quan-An^1,2

School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang

471023, China^1

Collaborative Innovation Center of Nonferrous Metals of Henan Province, China^2

关键词: Constant strain rate;    Deformation temperatures;    Heat resistant magnesium alloy;    Hot compression deformation;    Hot deformation activation energies;    Maximum strains;    Thermomechanical simulator;    True stress;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/230/1/012017/pdf
DOI  :  10.1088/1757-899X/230/1/012017

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The hot compression deformation of Mg-12Gd-2.5Nd-0.5Zr heat-resistant magnesium alloy was carried out on Gleeble-1500D thermo-mechanical simulator with the strain rate range of 0.002-1 s-1, the deformation temperature range of 623-773 K and maximum strain of 50 %. The results show that true stress decreases with the increase of deformation temperature at a constant strain rate, and the true stress increases with the increase of strain rate at a same temperature. The deformation constitutive equation was established, and the hot deformation activation energy of 292.679 kJ/mol is determined.