Long term creep of TiAl+W+Si with polycrystalline and columnar grain structures

被引：16

作者：

Beddoes, J

Seo, DY

Saari, H

机构：

[1] Carleton Univ, Dept Mech & Aerosp Engn, Ottawa, ON K1S 5B6, Canada

[2] Natl Res Council Canada, Inst Aerosp Res, Struct Mat & Prop Lab, Ottawa, ON K1A 0R6, Canada

来源：

SCRIPTA MATERIALIA | 2005年 / 52卷 / 08期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Bridgman technique; directional solidification; titanium aluminides; creep;

D O I：

10.1016/j.scriptamat.2004.12.016

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The long term creep properties at 207 MPa and 760degreesC of TiAl + W + Si with a fully lamellar microstructure and either polycrystalline grains or a columnar grain structure are compared. The results indicate that the columnar grain structure reduces the primary creep strain and delays the onset of tertiary creep, with only 1.2% creep strain after 10,000 h. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：745 / 750

页数：6

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