Journal
SCRIPTA MATERIALIA
Volume 65, Issue 9, Pages 846-849Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.07.049
Keywords
Shape memory alloys; Phase transformation; Cold working; Microstructure
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- 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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The effect of Nb content on the cold workability, microstructure and shape memory properties of Ti-Ni-Hf-Nb alloys is investigated. The addition of Nb to Ti-Ni-Hf improves the cold workability due to the formation of a soft Nb-rich phase. The Ti-Ni-Hf Nb alloys exhibit a high-temperature shape memory effect during heating and cooling cycles under various stress levels. As the Nb content increases, the shape memory properties of the Ti-Ni-Hf-Nb alloys become more stable although the shape recovery strain decreases. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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