Journal
SCRIPTA MATERIALIA
Volume 64, Issue 12, Pages 1114-1117Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.03.004
Keywords
High-temperature shape memory alloy; Ti-Ta-Al; Thermal stability; omega Phase
Categories
Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- WCU (World Class University) from the National Research Foundation of Korea [R32-2008-000-20093-0]
- National Research Foundation of Korea [R32-2008-000-20093-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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.
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