Superplastic behavior of a TiAl alloy in, its as-cast state

被引：6
作者：
Zhang, B [1 ]
Wang, JN [1 ]
Yang, H [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2002年 / 37卷 / 14期
基金：
中国国家自然科学基金;
关键词：
intermetallic compounds; electron microscopy; mechanical properties; microstructure;
D O I：
10.1016/S0025-5408(02)00932-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Superplastic behavior of a TiAl alloy was investigated in a temperature range between 800 and 1000degreesC and at a strain rate of 1 x 10(-4) s(-1). The results show that the present alloy possesses very good superplasticity even in its as-cast state. A tensile elongation of 628% was obtained at 850degreesC. The observed superplastic behavior can be explained by the formation of a fine microstructure containing a metastable beta-phase during solidification. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2315 / 2320
页数：6
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