In-situ SEM observations of nucleation and growth of thermoelastic martensitic transformation in shape memory alloys

Yohei Soejima, Takayuki Miyoshi, Tomonari Inamura, Minoru Nishida

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

The nucleation, growth, forward and reverse transformation processes of thermoelastic martensite (TM) in shape memory alloys have been investigated by in-situ SEM cooling and heating observations. The homogeneous-like nucleation from the grain interior was observed in Ti-Ni, Ti-Nb-Al, Ti-Ni-Pd alloys. On the other hand, the heterogeneous nucleation from the grain boundary was observed in Ni-Mn-Ga, Cu-Al-Mn, Cu-Al-Ni alloys. In addition, the microstructure memory effect (MME) of the M phase only occurs during thermal cycles in the Ti-Nb-Al alloy. It is suggested that there is intimate relation between the nucleation site and the distribution of elastic stress field due to the anisotropy of thermal expansion coefficient. It is assumed that the change of internal stress field in the parent (P) phase during transformation cycles prevents MME.

本文言語英語
ホスト出版物のタイトルPTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
編集者Long-Qing Chen, Matthias Militzer, Gianluigi Botton, James Howe, Chadwick Sinclair, Hatem Zurob
出版社International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
ページ649-650
ページ数2
ISBN(電子版)9780692437360
出版ステータス出版済み - 2015
イベントInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 - Whistler, カナダ
継続期間: 6月 28 20157月 3 2015

出版物シリーズ

名前PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015

その他

その他International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015
国/地域カナダ
CityWhistler
Period6/28/157/3/15

!!!All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 無機化学
  • 材料化学
  • 金属および合金

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