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Metallurgical and Materials Transactions A

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09-03-2017 | Communication

Suppression of Martensitic Transformation in Co₂Cr(Ga,Si) Heusler Alloys by Thermal Cycling

Authors: Xiao Liang, Fei Xiao, Xuejun Jin, Takashi Fukuda, Tomoyuki Kakeshita

Published in: Metallurgical and Materials Transactions A | Issue 5/2017

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Abstract

We have investigated the influence of thermal cycles on martensitic transformation of a Co₂Cr(Ga,Si) ferromagnetic Heusler alloy. The as-quenched specimen exhibits successive L2₁(L)–D0₂₂–L2₁(H) martensitic transformation in the cooling process, which is known as reentrant martensitic transformation. However, heating to 800 K (527 °C) for reverse D0₂₂–L2₁ transformation with a rate of 10 K/min (10 °C/min) stabilizes the parent phase, meaning that the martensitic transformation is suppressed by the thermal cycles. We found precipitate after thermal cycles, and it will be the reason for the stabilization of parent phase.

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Title: Suppression of Martensitic Transformation in Co2Cr(Ga,Si) Heusler Alloys by Thermal Cycling
Authors: Xiao Liang
Fei Xiao
Xuejun Jin
Takashi Fukuda
Tomoyuki Kakeshita
Publication date: 09-03-2017
Publisher: Springer US
Published in: Metallurgical and Materials Transactions A / Issue 5/2017
Print ISSN: 1073-5623
Electronic ISSN: 1543-1940
DOI: https://doi.org/10.1007/s11661-017-4048-3

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