Dynamic Recrystallization Behavior and Numerical Simulation of Fine Grain TC4 Titanium Alloy

被引：0

作者：

Liu, Yingying ^{[1
]}

Li, Jiayi ^{[1
]}

Guo, Wenhu ^{[1
]}

Zhang, Junyan ^{[1
]}

Zhai, Jiangbo ^{[2
]}

机构：

[1] School of Metallurgical Engineering, Xi’an University of Architecture &Technology, Xi’an,710055, China

[2] Shaanxi Hong Yuan Aviation Forging Company Ltd, Xianyang,713800, China

来源：

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2022年 / 51卷 / 11期

关键词：

Extrusion - Finite element method - Hot working - Recycling - Strain rate - Stress-strain curves - Titanium alloys;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The dynamic recrystallization (DRX) behavior of fine-grain TC4 titanium alloy prepared by continuous variable cross-section recycled extrusion during hot working was investigated by combining experiment and finite element simulation. The critical strain and DRX dynamic models of fine-grain TC4 titanium alloy were established based on the true stress-strain curves obtained by the experiment. The material properties were defined based on the DRX models, and the thermal compression process was simulated by DEFORM-3D software. The results show that the DRX behavior of fine grain TC4 is significantly affected by thermal compression processing parameters. The volume fraction of dynamic recrystallization (XDRX) and the grain size are increased with increasing deformation temperature and decreasing strain rate. The equivalent strain and range of the deformation zone are increased simultaneously with increasing strain. The correlation between the experimental value and the simulated value of XDRX is 0.9762, which indicates the high accuracy of the established model. © 2022 Rare Metals Materials and Engineering Press. All rights reserved.

引用

页码：4137 / 4145