Texture evolution and fcc/hcp transformation in Fe-Mn-Si-Cr alloys by tensile deformation

Eui Pyo Kwon, Shun Fujieda, Kozo Shinoda, Shigeru Suzuki

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

In this study, evolution characteristics of the texture and microstructure of Fe-Mn-Si-Cr shape memory alloys (SMAs) upon tensile deformation were investigated. Electron backscatter diffraction analysis revealed that the tensile deformation in the rolling direction (RD) of sample sheets resulted in the evolution of microstructure containing stress-induced e{open} martensite and texture components belonging to 〈1. 1. 1〉 and 〈1. 0. 0〉//RD fibers. Quantitative measurement of e{open} martensite formation in individual austenite grains at the strain levels of 4% and 5% revealed that among the 〈1. 0. 0〉, 〈1. 0. 1〉, and 〈1. 1. 1〉 grains which are oriented along the tensile direction, 〈1. 0. 1〉 oriented grain showed the highest e{open} martensite formation rate. In the recrystallized state, the volume fraction of 〈1. 0. 1〉 texture component in 20% tensile deformed samples was slightly higher in the transverse direction (TD) than in the RD. Because of that preferred orientation recovery strain was slightly higher in the TD sample than in the RD sample.

Original languageEnglish
Pages (from-to)6524-6532
Number of pages9
JournalMaterials Science and Engineering A
Volume527
Issue number24-25
DOIs
Publication statusPublished - 2010 Sep 1

Keywords

  • Electron backscatter diffraction
  • Shape memory alloy
  • Shape memory effect
  • Stress-induced martensitic transformation
  • Texture

ASJC Scopus subject areas

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

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