化学成分影响NiMnGa基合金热学及力-磁学性能研究进展  

Research Progress of Chemical Composition Dependence on the Thermal and Mechanical-Magnetic Properties of NiMnGa-Based Alloys

作　　者：范建柳 艾云龙[1] 欧阳晟 朱嘉武 Fan Jianliu;Ai Yunlong;Ouyang Sheng;Zhu Jiawu(School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《稀有金属材料与工程》2021年第11期4185-4192,共8页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(52001156);江西省科技厅资助项目(20192BAB216003)。

摘　　要：铁磁性记忆合金Ni-Mn-Ga具有可恢复应变大、响应速度快等优点,有望成为一种智能驱动与传感材料。该合金的热学特性、力-磁性能都对化学成分十分敏感。本文综述了Ni-Mn-Ga基马氏体结构转变温度和力-磁性能对化学成分依赖性:明确了马氏体类型、相变温度和居里温度的变化规律;总结了磁晶各向异性能和饱和磁化强度的变化趋势;探究了掺杂元素降低马氏体孪生应力内在机理。最后对Ni-Mn-Ga合金成分设计中存在的问题进行了探讨。Ferromagnetic shape memory alloy Ni-Mn-Ga has large strain output and quick response,which would be expected to be an intelligent material applied in actuator and sensor.Its thermal,mechanical and magnetic properties are very sensitive to the chemical composition.The detail of composition dependence of these properties was reviewed in this paper.The changes of martensitic structure,martensitic transformation temperature and Curie temperature were clarified,the variation tendencies of the magnetocrystalline anisotropy energy and saturation magnetization were summarized,and the mechanism that doping elements reduce the twinning stress of martensite was revealed.Finally,the problems existing in the composition design of Ni-Mn-Ga alloy were discussed.

关 键 词：形状记忆合金 NI-MN-GA 成分依赖性 转变温度 力-磁性能 

分 类 号：TG146.15[一般工业技术—材料科学与工程]