Novel β-TiTaAl alloys with excellent cold workability and a stable high-temperature shape memory effect

被引：73

作者：

Buenconsejo, Pio John S. ^{[1
]}

Kim, Hee Young ^{[1
]}

Miyazaki, Shuichi ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

SCRIPTA MATERIALIA | 2011年 / 64卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

High-temperature shape memory alloy; Ti-Ta-Al; Thermal stability; omega Phase; OMEGA-PHASE CRYSTALS; TITANIUM; TRANSFORMATION; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2011.03.004

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

beta-TiTaAl alloy, which has excellent cold workability, is presented as a new practical high-temperature shape memory alloy. The optimum composition range showing a stable high-temperature shape memory effect is identified, revealing that the addition of Al is more effective than the addition of Ta in obtaining a stable high-temperature shape memory effect. For example, in the thermal cycling test for two selected alloys (Ti-32Ta and Ti-27Ta-5Al) with similar M(s), the Ti-27Ta-5Al exhibited better stability since the formation of omega phase is suppressed. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1114 / 1117

页数：4

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