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Microstructures and shape memory characteristics of a Ti-20Ni-30Cu (at.%) alloy strip fabricated by the melt overflow process
- Issue Date
- Jan-2010
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Shape memory alloys; Rapid solidification; Microstructure; Martensitic phase transformation; Transformation hysteresis
- Citation
- SCRIPTA MATERIALIA, v.62, no.2, pp 71 - 74
- Pages
- 4
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- SCRIPTA MATERIALIA
- Volume
- 62
- Number
- 2
- Start Page
- 71
- End Page
- 74
- ISSN
- 1359-6462
- Abstract
- Melt overflow improved the workability and shape memory characteristics of a Ti-20Ni-30Cu (at.%) alloy by suppressing the formation of TiCu phase and introducing crystallographic defects such as dislocations. The fracture stress and strain of the alloy strip prepared by melt overflow were 445 MPa and 7.6%, respectively, which were larger than those of the alloy rod fabricated by conventional casting. Transformation hysteresis of the strip was 3.8 K under 120 MPa, which was much smaller than that of the rod. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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