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Electron microscope study on martensitic transformations in Fe- Pt alloys: General features of internal structure

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Abstract

Martensitic transformations of Fe-Pt alloys near the composition of Fe3Pt with various degrees of order were examined systematically mainly by transmission electron microscopy. This alloy system exhibits two types of martensitic transformations, fcc-bct (bcc) and fcc-fct. The present experimental results indicate that each transformation is independent and compctitive. As the degree of order of austenite (L12 superlattice) increases, the dislocation density of bct (bcc) martensite is remarkably reduced and the shape of internal twins is changed, which is closely related to the thermoelastic behavior and the reversibility of the transformation.

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Authors and Affiliations

  1. Department of Material Physics, Faculty of Engineering Science, Osaka University, 560, Toyonaka Osaka, Japan

    S. Muto (Graduate Student), R. Oshima (Associate Professor) & F. E. Fujita (Professor)

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  1. S. Muto
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  2. R. Oshima
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  3. F. E. Fujita
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Muto, S., Oshima, R. & Fujita, F.E. Electron microscope study on martensitic transformations in Fe- Pt alloys: General features of internal structure. Metall Trans A 19, 2723–2731 (1988). https://doi.org/10.1007/BF02645807

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  • DOI: https://doi.org/10.1007/BF02645807

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