Effect of Ca-addition on Hot Deformation Behavior and Workability of Mg-Gd-Y-Zn-Zr Alloy

被引：0

作者：

Ca对Mg-Gd-Y-Zn-Zr合金热变形行为及热加工性能的影响

机构：

[1] Wang, Yujiao

[2] Jiang, Haitao

[3] Liu, Chaomin

[4] Zhang, Yun

[5] Guo, Wenqi

[6] Kang, Qiang

[7] Xu, Zhe

[8] Wang, Panpan

来源：

Jiang, Haitao (nwpujht@163.com) | 1650年 / Science Press卷 / 49期

关键词：

Deformation - Dynamic recrystallization - Strain rate - Zinc alloys - Gadolinium alloys - Yttrium alloys - Zircaloy - Hot working;

D O I：

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摘要：

Effect of Ca on hot deformation behavior and workability of Mg-Gd-Y-Zn-Zr alloy were investigated by Gleeble 3500 thermal simulation tester conducted at a temperature ranging from 573 K to 723 K and strain rate varying from 0.001 s-1 to 1 s-1. It is indicated that the addition of Ca increased the flow stress and hot deformation active energy, widened the range of processing stable zone and the optimal processing zone, but decreased the maximum power dissipation efficiency, and inhibited the dynamic recrystallization. Combined with the microstructure after thermal compression which was analyzed by laser confocal microscopy, the accuracy of the processing map was verified. The optimized hot processing parameters of Mg-Gd-Y-Zn-Zr were formulated, namely strain rate ranging from 0.001 s-1 to 0.01 s-1, temperature ranging from 623 K to 723 K. Depending on the optimum processing parameters, an isothermal forged magnesium alloy with good quality and no deformation defects was fabricated. © 2020, Science Press. All right reserved.

引用

页码：1650 / 1656