Martensitic transformation in TiPd-Cr alloys.

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概要

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• The crystal structures, internal structure of the martensitic phases and the effect of chromium addition on the martensitic transformations on the TiPd alloys were investigated by elecrical resistivity measurements and electron microscope observation. It was found that the chromium addition is very effective in reducing the Ms temperature from about 800 K for the stoichiometric TiPd alloy to liquid nitrogen temperature with increasing chromium content, in both the alloys Ti50Pd50-x Crx(x=2 to 10 at%) and Ti54Pd46-x Crx(x=2 to 6 at%). In the chromium-added alloys, the 9R martensite phase and a peculiar intermediate incommensurate phase appear besides the twinned B19(2H) martensite, like in the case of the TiPd–Fe alloys. The internal structure of the 9R martensite was found to be {114}9R twins which corresponds to {128}18R type twin of the 18R martensite phase of the Cu–Al alloys. The features of the incommensurate phase, i.e., large incommensurability of superlattice reflections, its dependence on the alloy composition, configuration of variants are quite the same as those in the TiPd–Fe alloys.

• The Iron and Steel Institute of Japanの論文

著者

• Enami Kazuyuki

  Deparment Of Materials Science And Engineering Osaka University

• Enami Kazuyuki

  Department of Materials Science and Engineering, Osaka University

• Hori Kazuhiro

  Graduate student, Department of Materials Science and Engineering, Osaka University

• Takahashi Junzo

  Faculty of Dentistry, Osaka University

関連論文

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• Martensitic transformation in TiPd-Cr alloys.

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