On the deformation mechanisms and strain rate sensitivity of a metastable β Ti-Nb alloy

被引：52
作者：
Zhan, Hongyi [1 ]
Zeng, Weidong [2 ]
Wang, Gui [1 ]
Kent, Damon [3 ]
Dargusch, Matthew [1 ]
机构：
[1] Univ Queensland, Ctr Adv Mat Proc & Manufacture, Sch Mech & Min Engn, St Lucia, Qld 4072, Australia
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Sch Mat, Xian 710072, Peoples R China
[3] Univ Sunshine Coast, Sch Sci & Engn, Sippy Downs, Qld 4575, Australia
来源：
SCRIPTA MATERIALIA | 2015年 / 107卷
关键词：
Metastable beta titanium alloys; High strain rates; Stress-induced martensitic transformation; Mechanical twinning; AUSTENITIC STAINLESS-STEELS; PHASE-STABILITY; TITANIUM-ALLOY; MARTENSITIC-TRANSFORMATION; HIGH-STRENGTH; MICROSTRUCTURE; MODULUS; STRESS;
D O I：
10.1016/j.scriptamat.2015.05.014
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The Ti-25Nb-3Zr-3Mo-2Sn (wt.%) alloy deforms primarily by {332)< 113 > twinning with limited {112}< 111 > twinning and stress-induced phase transformations. For the Ti-25Nb-3Zr-3Mo-2Sn alloy, the yield stress and strain hardening rate are independent of strain rate. It is found that adiabatic heating induced by high strain rate deformations is insufficient to significantly modify the deformation modes. Also the twinning rate and morphologies of {332)< 113 > twins are independent of strain rate (1 x 10(-3)-1 x 10(3)s(-1)) within the strain range in our experiments. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：34 / 37
页数：4
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