B2 grain size refinement and its effect on room temperature tensile properties of a Ti-22Al-27Nb orthorhombic intermetallic alloy

被引：97

作者：

Emura, S ^{[1
]}

Araoka, A ^{[1
]}

Hagiwara, M ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Mat Engn Lab, Tsukuba, Ibaraki 3050047, Japan

来源：

SCRIPTA MATERIALIA | 2003年 / 48卷 / 05期

关键词：

orthorhombic phase; powder metallurgy; grain refinement; pinning effect; tensile properties;

D O I：

10.1016/S1359-6462(02)00462-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The prior B2 grain size of a Ti-22Al-27Nb orthorhombic intermetallic alloy has been successfully controlled to be in the range of 8-49 mum using a pinning effect of spherical alpha(2) particles against grain growth. The finest grained material showed an excellent combination of room temperature tensile strength (around 1000 MPa) and ductility (more than 15%). (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：629 / 634

页数：6