Microstructural evolution and hydride precipitation mechanism in hydrogenated Ti-6Al-4V alloy

被引：57
|
作者：
Liu, H. J. [1 ]
Zhou, L. [1 ]
Liu, P. [1 ]
Liu, Q. W. [1 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding Prod Technol, Harbin 150001, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 23期
关键词：
Titanium alloys; Thermohydrogen processing; Microstructural evolution; Hydride precipitation; TITANIUM-ALLOYS; METALS;
D O I：
10.1016/j.ijhydene.2009.09.098
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：
Use of hydrogen as a temporary alloying element in titanium alloys is an attractive approach for enhancing processability, and also for controlling the microstructure and improving final mechanical properties. In this study, the alpha + beta titanium alloy, Ti-6Al-4V, was hydrogenated with hydrogen levels of 0.1, 0.3 and 0 5 wt%. The microstructure, phases and phase transformations were investigated by optical microscopy, X-ray diffraction and transmission electron microscopy The results showed that the hydrogen addition had a noticeable influence on the microstructure of Ti-6Al-4V alloy. Hydrogen stabled the beta-phase and leaded to the formation of hexagonal close packed alpha' martensite as well as face-centered cubic delta hydride. Microstructural evolution and hydride precipitation mechanism in hydrogenated Ti-6Al-4V alloy was revealed. (C) 2009 Professor T Nejat Veziroglu Published by Elsevier Ltd All rights reserved
引用
收藏
页码：9596 / 9602
页数：7
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