Transmission electron microscopy of antiphase boundary-like structure y induced by displacive transformation in Ti-Pd shape memory alloy

M. Matsuda', M. Yamashita, K. Hirayama, T. Hara, M. Nishida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An antiphase boundary (APB)-like structure in the B19 martensite of Ti-Pd alloy has been investigated by transmission electron microscopy. High-resolution and high-angle annular dark-field scanning transmission electron microscopy images demonstrate the presence of an APB-like contrast along the (001) basal plane of the B19 martensite. The contrast is not inherited from the APB with a displacement vector of the type R = (1/2)<111> in the B2 parent phase. In-situ heating observations indicate that the APBlike contrast disappears above Af temperature. These facts suggest that the boundary is induced by the local heterogeneity of atomic movements during the martensitic transformation. Therefore, we have newly proposed that the APB-like structure in the B19 martensite is defined as the displacive transformation-induced APB.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Martensitic Transformations, ICOMAT-08
Pages305-309
Number of pages5
Publication statusPublished - 2009
Event12th International Conference on Martensitic Transformations, ICOMAT-08 - Santa Fe, NM, United States
Duration: Jun 29 2008Jul 5 2008

Publication series

NameProceedings of the International Conference on Martensitic Transformations, ICOMAT-08

Other

Other12th International Conference on Martensitic Transformations, ICOMAT-08
CountryUnited States
CitySanta Fe, NM
Period6/29/087/5/08

All Science Journal Classification (ASJC) codes

  • Materials Chemistry

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  • Cite this

    Matsuda', M., Yamashita, M., Hirayama, K., Hara, T., & Nishida, M. (2009). Transmission electron microscopy of antiphase boundary-like structure y induced by displacive transformation in Ti-Pd shape memory alloy. In Proceedings of the International Conference on Martensitic Transformations, ICOMAT-08 (pp. 305-309). (Proceedings of the International Conference on Martensitic Transformations, ICOMAT-08).