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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.57  No.3 (2016)  >  pp.250-256

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Antiphase Boundary-Like Structure of B19 Martensite in Ti-Ni-Pd Shape Memory Alloy

Mitsuhiro Matsuda1), Masatoshi Mitsuhara2), Kazuki Takashima1), Minoru Nishida2)
1) Department of Materials Science and Engineering, Kumamoto University 2) Department of Engineering Sciences for Electronics and Materials, Kyushu University

The antiphase boundary (APB)-like structure of B19 martensite in the Ti-Ni-Pd alloy was investigated by means of conventional transmission electron microscopy and high-angle annular dark-field scanning transmission electron microscopy. Some APB-like structures with wide and curved contrast exhibited shifts along the (010)B19 and (001)B19 planes; that is, it exhibited facets composed of those planes at the atomic level. This atomic displacement reflects the atomic movement stemming from not only martensitic but also a kind of R-phase transformations.

antiphase boundary, martensitic transformation, displacement vector, high-angle annular dark-field scanning transmission electron microscopy, titanium-nickel-palladium alloy

Received: September 03, 2015
Accepted: October 20, 2015 , Published online: February 25, 2016



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