Creep of nearly lamellar TiAl alloy containing W

被引：71
作者：
Hodge, AM [1 ]
Hsiung, LM [1 ]
Nieh, TG [1 ]
机构：
[1] Lawrence Livermore Natl Lab, Div Mat Sci & Technol, Livermore, CA 94550 USA
来源：
SCRIPTA MATERIALIA | 2004年 / 51卷 / 05期
关键词：
creep behavior; lamellar TiAl; ultrafine lamellar micro structure; beta phase;
D O I：
10.1016/j.scriptamat.2004.05.005
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Effects of W on the creep resistance of two nearly fully lamellar TiAl alloys with 1.0 and 2.0 at.% W have been investigated. In the low stress regime (LS) a nearly quadratic (1.5 < n < 2) creep behavior was observed. It is found that the addition of W can improve the creep resistance: however, the addition of excess W can result in the formation of 0 phase, which produces an adverse effect on the creep strength. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：411 / 415
页数：5
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