Fracture Criterion in Hot Compression of Ti60 Titanium Alloy by High-Speed Photography

被引：0
|
作者：
Peng Wenwen [1 ]
Zeng Weidong [1 ]
Wang Qingjiang [2 ]
Yu Hanqing [1 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2016年 / 45卷 / 02期
关键词：
Ti60 titanium alloy; hot deformation fracture criterion; high-speed photography; DUCTILE FRACTURE; MICROSTRUCTURE; WORKABILITY; BEHAVIOR;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel high-speed photography was introduced to determine the critical fracture strain of Ti60 high-temperature titanium alloy during hot compression deformation. This method can precisely capture the nucleation site and propagation process of cracking by two high-speed cameras fixed on opposite sides of the specimens, and thus it is efficient to determine the critical fracture strain in hot deformation processes. Based on Oh criterion, a new hot deformation fracture criterion considering strain rate and temperature effects was built and can be modeled as the function of Zener-Holloman parameter. By combining the DEFORM-3D simulation software and FORTRAN language, fracture initiation in the upsetting of large size Ti60 ingot can be precisely predicted, which shows that the proposed prediction model is effective and practicable.
引用
收藏
页码：399 / 403
页数：5
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