Microstructure and phase transformation of Ni-Ti-Fe-Nd quaternary shape memory alloy

Proceedings of the Mongolian Academy of Sciences Pub Date : 2019-04-26 DOI:10.5564/PMAS.V59I1.1136

Dovchinvanchig Maashaa

引用次数: 0

Abstract

The effect of rare earth element neodymium (Nd) addition on the microstructure and phase transformation behavior of Ni50Ti47Fe2Nd1 shape memory alloy was investigated by scanning electronic microscope, X-ray diffraction and differential scanning calorimetry. The results show that the microstructure of Ni-Ti-Fe-Nd quaternary alloy consists of NiNd3 phase, NiTi2 and the NiTi matrix. A one-step martensitic transformation is observed in the alloys. The martensitic transformation start temperature Ms 54.110C.

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Ni-Ti-Fe-Nd四元形状记忆合金的组织与相变

采用扫描电镜、x射线衍射和差示扫描量热法研究了稀土元素钕(Nd)添加对Ni50Ti47Fe2Nd1形状记忆合金显微组织和相变行为的影响。结果表明:Ni-Ti-Fe-Nd四元合金的显微组织由NiNd3相、NiTi2和NiTi基体组成;在合金中观察到一步马氏体相变。马氏体相变开始温度为54.110℃。

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