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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Structure and shape memory effect in a Ni_(54)Mn_(25)Ga_(20)Gd_1 alloy with a high transformation temperature
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Structure and shape memory effect in a Ni_(54)Mn_(25)Ga_(20)Gd_1 alloy with a high transformation temperature

机译：高转变温度的Ni_（54）Mn_（25）Ga_（20）Gd_1合金的结构和形状记忆效应

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摘要

Ni_(54)Mn_(25)Ga_(20)Gd_1 (at.%) alloy with a high transformation temperature has been obtained by substituting 1 at.% Gd for Ga in a ternary Ni_(54)Mn_(25)Ga_(21 shape memory alloy. The microstructure and phase transformations in the Ni_(54)Mn_(25)Ga_(20)Gd_1 alloy have been investigated by SEM, TEM, XRD and DSC. The results show that the microstructure of the Ni_(54)Mn_(25)Ga_(20)Gd_1 alloy consists of matrix and hexagonal Gd (Ni,Mn)4Ga phase, and martensitic transformation start temperature (M_sis 491K. The compressive strength and the compressive strain are about 958 MPa and 16%, respectively.
机译：通过在三元Ni_（54）Mn_（25）Ga_（21）中用1at。％Gd的Ga代替Ga，获得了具有高转变温度的Ni_（54）Mn_（25）Ga_（20）Gd_1（at。％）合金通过SEM，TEM，XRD和DSC研究了Ni_（54）Mn_（25）Ga_（20）Gd_1合金的显微组织和相变，结果表明Ni_（54）Mn_的显微组织（25）Ga_（20）Gd_1合金由基体和六角形的Gd（Ni，Mn）4Ga相和马氏体转变开始温度（M_sis 491K）组成。抗压强度和压缩应变分别约为958 MPa和16％。

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