Journal
SCRIPTA MATERIALIA
Volume 126, Issue -, Pages 20-23Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2016.08.002
Keywords
Martensitic phase transformation; Abnormal grain growth; Superelasticity; Precipitates; FeMnAlNiTi
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Funding
- Deutsche Forschungsgemeinschaft [NI1327/7-1]
- U.S. National Science Foundation (NSF), Division of Materials Research, Metals and Metallic Nanostructures Program [1508634]
- NSF - U.S. National Science Foundation International Materials Institutes Program [DMR 08-44082]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1508634] Funding Source: National Science Foundation
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In the present study, the effect of Ti addition on the microstructure evolution and pseudoelastic properties of a Fe-Mn-Al-Ni shape memory alloy were investigated. By replacing 1.5 at.% Al by Ti in Fe-Mn-Al-Nio it was possible to strongly hamper the formation of the ductile, non-transforming gamma-phase, which is detrimental to the pseudoelastic performance. Single crystalline samples were fabricated via abnormal grain growth. Following aging treatment at 250 degrees C compression testing at various testing temperatures was conducted up to 10.5% strain using a near (102) oriented single crystal. A low Clausius-Clapeyron slope and good pseudoelastic properties were found. (C) 2016 Ada Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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