Transmission electron microscopy of antiphase boundary-like structure of B19′ martensite in Ti-Ni shape memory alloy

M. Matsuda, K. Kuramoto, Y. Morizono, S. Tsurekawa, E. Okunishi, T. Hara, M. Nishida

研究成果: Contribution to journalArticle査読

13 被引用数 (Scopus)

抄録

An antiphase boundary (APB)-like structure of the B19′ martensite in Ti-Ni alloy was investigated by transmission electron microscopy. The APB-like structure shows atomic shifts on both the (0 1 0)B19′ plane along the c-axis and the (0 0 1)B19′ plane along the b-axis; a kind of ledge-and-step structure on the b-c plane, in addition to a displacement along the a-axis. The displacement vector can be expressed as R = 〈-0.1648 1/2 0.4328〉 in terms of the conventional atomic coordinates of Ti and Ni in the B19′ martensite. The APB-like structure is not inherited from APB in the B2 parent phase. We conclude that the APB-like structure is developed by accidental impingement of differently nucleated martensitic domains during the transformation. This structure is defined as a kind of stacking fault with an APB-like contrast.

本文言語英語
ページ(範囲)133-140
ページ数8
ジャーナルActa Materialia
59
1
DOI
出版ステータス出版済み - 1 2011

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • ポリマーおよびプラスチック
  • 金属および合金

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