Journal
SCRIPTA MATERIALIA
Volume 166, Issue -, Pages 48-52Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.02.034
Keywords
FeMnAlNi; Single crystal; Stress-induced martensitic transformation; Superelasticity; Clausius-Clapeyron relation
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Funding
- National Science Foundation - International Materials Institute Program, Office of Specific Programs, Division of Materials Research, Arlington, Virginia [DMR 08-44082]
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The orientation dependence of the martensitic transformation characteristics and superelasticity were investigated in the Fe43.5Mn34Al15Ni7.5 single crystalline shape memory alloy along the [100], [111] and [123] orientations under compression. Solution heat treated samples exhibited a strong orientation dependence of the slopes for the stress vs. temperature phase diagrams (i.e. Clausius-Clapeyron slopes), while peak-aged samples demonstrated reduced orientation dependence. Maximum superelastic strains determined in the experiments along various single crystal orientations match well with the theoretical predictions. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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