Reasons for incomplete shape recovery in polycrystalline Fe-Mn-Si shape memory alloys

Xiaohua Min, Takahiro Sawaguchi, Xin Zhang, Kaneaki Tsuzaki

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Quantitative surface relief analysis proved that the incomplete shape recovery of a polycrystalline Fe-28Mn-6Si-5Cr alloy was not caused by slip deformation on loading but by irreversible phase transformation on heating, under given conditions ([54̄1̄] tensile axis, 5.9% strain). The observed area showed a higher recovery strain than the macroscopic recovery strain, implying inherently high reversibility. However, the value was significantly lower than that of a single crystal, due to the geometric constraint from surrounding grains, which reflected different transformation dislocations between forward and reverse transformations.

Original languageEnglish
Pages (from-to)37-40
Number of pages4
JournalScripta Materialia
Volume67
Issue number1
DOIs
Publication statusPublished - Jul 1 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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