Effect of reverse β-to-ω transformation on twinning and martensitic transformation in a metastable β titanium alloy

被引：38
|
作者：
Xiao, J. F. [1 ]
Nie, Z. H. [1 ]
Tan, C. W. [1 ]
Zhou, G. [2 ]
Chen, R. [1 ]
Li, M. R. [2 ]
Yu, X. D. [1 ]
Zhao, X. C. [1 ]
Hui, S. X. [3 ]
Ye, W. J. [3 ]
Lee, Y. T. [4 ]
机构：
[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100086, Peoples R China
[2] Northwest Inst Nucl Technol, Xian 710024, Shaanxi, Peoples R China
[3] Gen Res Inst Nonferrous Met, Key Lab Nonferrous Met & Proc, Beijing 100086, Peoples R China
[4] Kyungnam Univ, Dept Nano New Mat, Chang Won 51767, South Korea
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 759卷
基金：
中国国家自然科学基金;
关键词：
beta titanium; Athermal omega phase; Reverse displacive transformation; {332} twinning and SIM; TRANSMISSION ELECTRON-MICROSCOPY; PRESSURE PHASE-TRANSITION; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; DYNAMIC-RESPONSE; GRAIN-SIZE; TI; NB; PRECIPITATION; EXAMPLE;
D O I：
10.1016/j.msea.2019.05.060
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A metastable beta titanium alloy, Ti-2Al-9.2Mo-2Fe (wt.%), with athermal omega phase after quenching has been subjected to high strain rate (similar to 3000 s(-1)) compression at ambient temperature by Spilt Hopkinson Pressure Bar arrangement. Reverse beta-to-omega) transformation was investigated by transmission electron microscopy during deformation. Furthermore, the novel distribution of athermal to phase in {332} twinning and stress-induced martensitic was observed. We reveal that such novel distribution is attributed to the influence of omega phase on {332} twinning and stress-induced martensite transformation (SIMT) based on the viewpoint of the instability of the lattice structure of metastable beta phase. Furthermore, a new process of twinning and SIMT in current alloy with omega phase was proposed.
引用
收藏
页码：680 / 687
页数：8
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