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

页码：680 / 687

页数：8

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