Creep behavior of a duplex high-Nb containing TiAl alloy

被引：0

作者：

He, SF ^{[1
]}

Lin, JP ^{[1
]}

Xu, XJ ^{[1
]}

Gao, JF ^{[1
]}

Wang, YL ^{[1
]}

Song, XP ^{[1
]}

Chen, GL ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2006年 / 35卷 / 02期

关键词：

creep properties; TiAl; minimum creep rate;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The creep behavior of a two phase Ti-45Al-9 (Nb,W, B,Y) alloy was investigated at 760 degrees C and 815 degrees C, under stresses ranging from 80 MPa to 300 MPa. The initial microstructure was found to be fine duplex microstructure. The comparison of the creep properties was presented between the duplex and the full lamellar microstructure of high-Nb containing TiAl alloy. It can be confirmed that the duplex alloy studied exhibit lower creep resistance and a minimum creep rate higher than that of the full lamellar Ti46AI8.5NbO.1C0.2B alloy by one order of magnitude. Creep stress exponents show that at 760 degrees C-815 degrees C, 80 MPa similar to 300 MPa, the creep mechanism of this alloy is dislocation climb.

引用

页码：257 / 260

页数：4

共 14 条

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