On the effect of gamma phase formation on the pseudoelastic performance of polycrystalline Fe-Mn-Al-Ni shape memory alloys

M. Vollmer, C. Segel, P. Krooß, J. Günther, L. W. Tseng, I. Karaman, A. Weidner, H. Biermann, T. Niendorf

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

In recent years, iron-based shape-memory-alloys such as Fe-Mn-Al-Ni came into focus, due to superior pseudoelastic performance and concomitantly low costs of the alloying elements. The formation of the ductile γ-phase in polycrystalline Fe-Mn-Al-Ni and its impact on the pseudoelastic performance have not been addressed, yet. Based on modification of quenching conditions this study shows that controlled γ-phase precipitation at grain boundaries can suppress intergranular cracking without affecting pseudoelasticity. In situ incremental strain tests revealed good recoverability up to about 8% strain.

Original languageEnglish
Article number10682
Pages (from-to)23-26
Number of pages4
JournalScripta Materialia
Volume108
DOIs
Publication statusPublished - 2015 Nov 1

All Science Journal Classification (ASJC) codes

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

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