Ti-6A1-4V alloy with an ultrafine-grained microstructure exhibiting low-temperature-high-strain-rate superplasticity

被引：72
|
作者：
Matsumoto, Hiroaki [1 ]
Yoshida, Kazuki [2 ]
Lee, San-Hak [3 ]
Ono, Yoshiki [3 ]
Chiba, Akihiko [1 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 980, Japan
[2] Tohoku Univ, Sendai, Miyagi 980, Japan
[3] NHK Spring Co Ltd, Res & Anal Dept, Tokyo, Japan
来源：
MATERIALS LETTERS | 2013年 / 98卷
关键词：
Titanium-aluminium-vanadium alloy; Superplasticity; Ultrafine-grained microstructure; Deformation processing; SEVERE PLASTIC-DEFORMATION; TI-6AL-4V ALLOY; ENHANCED SUPERPLASTICITY;
D O I：
10.1016/j.matlet.2013.02.033
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Superplasticity in microcrystalline Ti-6A1-4V (mass%) alloys is exhibited under high temperatures more than 1123 K and low strain rates less than 10(-3) s(-1), thereby restricting their practical application. to specialized areas such as aerospace. We herein identify a new type of Ti-6AI-4V alloy exhibiting low-temperature (below 973 K)-high-strain-rate (10(-2) s(-1)) superplasticity. The ultrafine-grained Ti-6A1-4V alloy was produced by simple hot orking of an alpha-martensite microstructure alloy, and it has a great potential for application as cost-affordable superplastic Ti alloy. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：209 / 212
页数：4
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