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
相关论文
共 29 条
[21]   Effects of alloying elements on creep of TiAl alloys with a fine lamellar structure [J].
Wang, JN ;
Zhu, J ;
Wu, JS ;
Du, XW .
ACTA MATERIALIA, 2002, 50 (06) :1307-1318
[22]   CREEP DEFORMATION IN NEAR-GAMMA TIAL .1. THE INFLUENCE OF MICROSTRUCTURE ON CREEP DEFORMATION IN TI-49AL-1V [J].
WORTH, BD ;
JONES, JW ;
ALLISON, JE .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1995, 26 (11) :2947-2959
[23]   Microstructure study of a γ-TiAl based alloy containing W and Si [J].
Yin, WM ;
Lupinc, V ;
Battezzati, L .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 240 (239-240) :713-721
[24]   Effect of W on structural stability of TiAl intermetallics and the site preference of W [J].
Yu, R ;
He, LL ;
Ye, HQ .
PHYSICAL REVIEW B, 2002, 65 (18) :1-5
[25]   B2 precipitates and distribution of W in a Ti-47Al-2W-0.5Si alloy [J].
Yu, R ;
He, LL ;
Cheng, ZY ;
Zhu, J ;
Ye, HQ .
INTERMETALLICS, 2002, 10 (07) :661-665
[26]   An analysis of the lamellar transformation in TiAl alloys containing boron [J].
Zhang, WJ ;
Deevi, SC .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 337 (1-2) :17-20
[27]   The controlling creep processes in TiAl alloys at low and high stresses [J].
Zhang, WJ ;
Deevi, SC .
INTERMETALLICS, 2002, 10 (06) :603-611
[28]   A preliminary study on the creep behavior of Ti-45Al-10Nb alloy [J].
Zhang, WJ ;
Chen, GL ;
Appel, F ;
Nieh, TG ;
Deevi, SC .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 315 (1-2) :250-253
[29]   Microstructural stability of the intermetallic Ti-45Al-2W-0.5Si-0.5B in the 800-980 °C temperature range [J].
Zhou, LZ ;
Lupinc, V ;
Guo, JT .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 354 (1-2) :97-105
123