Characteristic evolution of residual stress in shape memory Fe-Mn-Si-Cr alloys

S. Suzuki, E. P. Kwon, S. I. Tanaka

研究成果: Conference contribution

抜粋

Since the matrix phase is transformed to martensitic phase in shape memory alloys (SMAs) during plastic deformation, complicated residual stresses may arise during deformation, and they may affect the shape recovery ability of the alloys. Thus, it is important to be able to characterize the residual stresses formed in SMAs during plastic deformation and annealing. In this study, X-ray diffraction was used to characterize the residual stress formed in a Fe-Mn-Si-Cr SMA, which was deformed in the tensile direction and subsequently annealed. The results showed that the compressive stress persisted in the tensile direction of the face-centered cubic (fcc) matrix upon tensile deformation and unloading. Compressive stress is believed to result from the hexagonal close-packed (hcp) phase formed during stress-induced martensitic transformation. After the deformed samples were annealed to recover their shapes, the residual stress was considerably reduced. This is believed to be due to the decrease in the formation of the hcp phase or to the recovery of their shapes during annealing. Our results indicated that residual stress in the fcc matrix phase is associated with the shape recovery characteristics of the alloys after martensitic and reverse martensitic transformations.

元の言語English
ホスト出版物のタイトルInternational Conference on Residual Stresses 9 (ICRS 9)
出版者Trans Tech Publications Ltd
ページ374-379
ページ数6
ISBN(印刷物)9783037858493
DOI
出版物ステータスPublished - 2014 1 1
イベント9th International Conference on Residual Stresses, ICRS 2012 - Garmisch-Partenkirchen, Germany
継続期間: 2012 10 72012 10 9

出版物シリーズ

名前Materials Science Forum
768-769
ISSN(印刷物)0255-5476
ISSN(電子版)1662-9752

Other

Other9th International Conference on Residual Stresses, ICRS 2012
Germany
Garmisch-Partenkirchen
期間12/10/712/10/9

ASJC Scopus subject areas

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

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  • これを引用

    Suzuki, S., Kwon, E. P., & Tanaka, S. I. (2014). Characteristic evolution of residual stress in shape memory Fe-Mn-Si-Cr alloys. : International Conference on Residual Stresses 9 (ICRS 9) (pp. 374-379). (Materials Science Forum; 巻数 768-769). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.768-769.374