Microstructural changes during creep of a fully lamellar TiAl alloy

被引：68
|
作者：
Herrouin, F
Hu, D
Bowen, P
Jones, IP
机构：
[1] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England
[2] Univ Birmingham, Interdisciplinary Res Ctr Mat High Performance Ap, Birmingham B15 2TT, W Midlands, England
来源：
ACTA MATERIALIA | 1998年 / 46卷 / 14期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1016/S1359-6454(98)00198-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A complex gamma-TiAl based alloy, Ti-47Al-1Cr-1Mn-21a-0.2Si (at%), has been creep tested in a Fully lamellar microstructural condition at stresses of 200 and 150 MPa and at temperatures of 700 and 800 degrees C, respectively. This paper describes the effects of such creep test conditions on alloy microstructure. Crept samples exhibited two types of precipitate along lamellar colony boundaries. Their crystal structures and chemical compositions have been determined, and formation mechanisms and possible effects on creep are discussed. (C) 1998 Acta Metallurgica Inc. Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：4963 / 4972
页数：10
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