Journal
SCRIPTA MATERIALIA
Volume 69, Issue 11-12, Pages 812-815Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2013.09.006
Keywords
Martensitic phase transformations; Shape memory alloys (SMAs); Iron alloys; Precipitation; Superelastic alloys
Categories
Funding
- JSPS, Japan
- Grant for Excellent Graduate Schools from MEXT, Japan
- Grants-in-Aid for Scientific Research [22226011] Funding Source: KAKEN
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The effects of the addition of Nb and B on grain boundary precipitation, martensitic transformation and superelasticity were investigated in the Fe-Ni-Co-Al alloys. The addition of Nb increases the hardness and the martensitic transformation changes from non-thermoelastic to thermoelastic, while the addition of B is effective for suppressing the formation of brittle grain boundary precipitates. By the recrystallization texture developed by 98.5% cold-rolling and annealing, high ductility and superelasticity with 5% recoverable strain were realized in the Fe-28Ni-17Co-10.5Al-2.5Nb-0.05B polycrystalline alloy. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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