Effects of hydrogen addition on the high temperature deformation behavior of TC21 titanium alloy

被引：44
作者：
Zong, Ying Ying [1 ]
Liang, Ying Chun [2 ]
Yin, Zhong Wei [1 ]
Shan, De Bin [1 ]
机构：
[1] Harbin Inst Technol, Dept Mat Sci & Engn, Harbin 150006, Peoples R China
[2] Harbin Inst Technol, Sch Mechatron Engn, Harbin 150006, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 18期
基金：
中国国家自然科学基金;
关键词：
Titanium alloy; Hydrogen addition; High temperature deformation; DRX; DRV; TI-6AL-4V ALLOY; STARTING STRUCTURE; PROCESSING MAP; HOT-WORKING; ELEMENT; PHASE;
D O I：
10.1016/j.ijhydene.2012.02.036
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The true stress-strain curves of TC21 titanium alloy charged with up to 0.7 wt.% hydrogen were obtained by the isothermal hot compression tests which were carried out on an Instron 5500 machine at 1023 to 1223 K and 0.001 to 0.1 s(-1). The dependence of the steady state flow stress on hydrogen content was determined. The results showed that with the increase of hydrogen content flow stress decreased at lower hydrogen content and then increased at higher hydrogen content. Suitable hydrogen addition can significantly decrease the flow stress and improve the hot workability of TC21 titanium alloy. The flow stress behaviors and the dependence of hydrogen content on flow stress were clarified by microstructural observation. The optimum hydrogen content at different deformation temperature was determined. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：13631 / 13637
页数：7
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