Martensitic Transformation and Magnetic Properties of Cu-Ga-Mn β Alloys

Katsunari Oikawa; Naoki Koeda; Yuji Sutou; Toshihiro Omori; Ryosuke Kainuma; Kiyohito Ishida

doi:10.2320/matertrans.45.2780

Katsunari Oikawa, Naoki Koeda, Yuji Sutou, Toshihiro Omori, Ryosuke Kainuma, Kiyohito Ishida

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Keywords: shape memory alloy, martensitic transformation, copper-manganese-gallium alloy, phase diagram

JOURNAL FREE ACCESS

2004 Volume 45 Issue 8 Pages 2780-2784

DOI https://doi.org/10.2320/matertrans.45.2780

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Abstract

The martensitic transformation and magnetic properties of Cu-Ga-Mn β alloys were investigated. The alloys in the composition range Cu-21 at%Ga-(13—15)at%Mn were found to exhibit a thermoelastic martensitic transformation from an L2₁ parent to a 2H martensite in the ferromagnetic state. This martensitic transformation disappeared with the precipitation of the ω phase induced by aging at room temperature.

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