Thermoelastic martensitic transformation and superelasticity in Fe-Ni-Co-Al-Nb-B polycrystalline alloy

T. Omori, S. Abe, Y. Tanaka, D. Y. Lee, K. Ishida, R. Kainuma

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)812-815
Number of pages4
JournalScripta Materialia
Volume69
Issue number11-12
DOIs
Publication statusPublished - 2013 Dec

Keywords

  • Iron alloys
  • Martensitic phase transformations
  • Precipitation
  • Shape memory alloys (SMAs)
  • Superelastic alloys

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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