磁性形状记忆合金研究进展  

Progress of Magnetic Shape Memory Alloys

作　　者：蒋成保[1] 王敬民[1] 徐惠彬[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院空天先进材料与服役教育部重点实验室,北京100191

出　　处：《中国材料进展》2011年第9期42-50,56,共10页Materials China

基　　金：国家杰出青年科学基金(50925101);国家自然基金委创新研究群体项目(50921003)

摘　　要：磁性形状记忆合金是上世纪90年代开始出现的一类新型金属功能材料。这类合金兼具热弹性马氏体相变和磁性转变,其形状记忆效应可以由磁场控制。此外这类合金还具有磁阻、磁热等丰富的物理效应,因而一直是近期研究热点。首先介绍了磁性形状记忆合金的3个基本特征,即马氏体相变与磁性转变、磁场驱动孪晶再取向和磁场诱发相变。然后分别对Ni基、Co基和Fe基磁性形状记忆合金的研究现状进行了评述。最后展望了磁性形状记忆合金的发展趋势。Magnetic shape memory alloys are a new kind of metallic functional materials developed in 1990s. The magnetic shape memory alloys possess both thermoelastic martensitic transformation and magnetic transition. Therefore the shape memory effect can be controlled by the magnetic field. Besides, these alloys also exhibit magnetoresistance, magnetocaloric effects, etc. The magnetic shape memory alloys have been the intensively studied topic in recent years. In this paper, we firstly introduce three basic features of magnetic shape memory alloys, i.e. the martensitic transformation and magnetic transition, magnetic-field-induced twin variants reorientation, and magnetic-field-induced phase transformation. Secondly, the developments of Ni-based, Co-based and Fe-based magnetic shape memory alloys are reviewed. Finally, the future trends of magnetic shape memory alloys are prospected.

关 键 词：磁性形状记忆合金 马氏体相变 磁性转变 磁场驱动孪晶再取向 磁场诱发相变 

分 类 号：TB34[一般工业技术—材料科学与工程]