Superplastic forming and diffusion bonding of Ti-22Al-24Nb alloy

被引：52
|
作者：
Wang, Chang-wen [1 ]
Zhao, Tao [1 ]
Wang, Guofeng [1 ]
Gao, Jing [1 ]
Fang, He [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2015年 / 222卷
基金：
中国国家自然科学基金;
关键词：
Ti-22Al-24Nb alloy; Superplastic forming; Diffusion bonding;
D O I：
10.1016/j.jmatprotec.2015.03.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to analyze superplasticity and diffusion bonding of Ti-22Al-24Nb, uniaxial tensile experiment at high temperature, vacuum diffusion bonding and superplastic forming were carried out based on Ti-22Al-24Nb alloy. The results show that Ti-22Al-24Nb has the best superplasticity under temperature of 960 degrees C and strain rate of 0.0005 s(-1); by observing the diffusion bonding interface by metallographic microscope and conducting shear strength tests, it finds that under temperature of 960 degrees C and holding time of 2 h, with the increase of pressure within certain limit, effect of diffusion bonding gets better; after superplastic forming, the box-shaped component fits the die well, wall thickness is well distributed in general, and it has enough tensile strength at room temperature and high temperature. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：122 / 127
页数：6
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