Ni_2MnGa合金结构及磁控形状记忆机制的研究进展

Research progress of Ni_2MnGa magnetic-field-induced shape memory alloys

Ni2MnGa是一种新型的功能材料,它在磁场下能产生大的应变。本文从结构和磁控形状记忆机制方面阐述近年来国内和国际研究的进展,着重磁控形状记忆机制的3种微观模型。

Ni_2MnGa was a new class of functional material showing large strain under applied magnetic field. The strain arises from the field-induced motion of twin boundary in the martensitic state. Research progress of microstructure, especially the three quantitative models of twin boundary motion, was reviewed in the present paper.