Ni-Mn基磁性形状记忆合金第二相的形成及其对相变和性能的影响  

Formation of second phase and its influence on transformation and properties of Ni-Mn-based magnetic shape memory alloys

作　　者：陈枫 刘佩文 许贤福 田兵[1] 佟运祥[1] 李莉[1] CHEN Feng;LIU Pei-wen;XU Xian-fu;TIAN Bing;TONG Yun-xiang;LI Li(College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,哈尔滨150001

出　　处：《材料工程》2021年第3期20-30,共11页Journal of Materials Engineering

基　　金：国家自然科学基金项目(51804105);中央高校基本科研业务费专项资金项目(3072020CF1003)。

摘　　要：Ni-Mn基磁性形状记忆合金具有良好的温度场和磁场诱发的形状记忆效应、超弹性、磁热效应、磁阻效应、弹热效应、交换偏置效应等功能特性。作为一种新型多功能材料,有望应用于驱动器、传感器等多个工程领域。本文详细阐述了包含第二相的Ni-Mn基磁性形状记忆合金的研究现状,梳理和总结了第二相的形成及其对马氏体相变、功能特性和力学性能的影响,提出了一些有待解决的问题,如第二相对包括磁性形状记忆效应在内的磁功能特性的影响,并指出未来应着重于研究第二相形成与演化过程的热力学/动力学因素,对第二相进行合理调控,从而优化合金功能特性。Ni-Mn-based magnetic shape memory alloys have excellent shape memory effects induced by the temperature field and magnetic field,superelasticity,magnetocaloric effect,magnetoresistive effect,elastocaloric effect,exchange bias effect,etc.As a new type of multi-functional material,it is expected to be used in many engineering fields such as actuators,sensors and so on.The research status of Ni-Mn-based magnetic shape memory alloys containing the second phase was described in detail.The formation of the second phase and its influence on martensitic transformation,functional performance and mechanical properties were summarized.Several important and unresolved issues currently were presented,such as the impact of the second phase on magnetic functional properties including magnetic shape memory effect.It was pointed out that in future work,it is essential to study the thermodynamic and kinetic factors of the formation and evolution of the second phase,and properly regulate the second phase so as to optimize the functional properties of the alloys.

关 键 词：Ni-Mn基合金 磁性形状记忆合金 第二相 马氏体相变 

分 类 号：TG139.6[一般工业技术—材料科学与工程]