NiTi形状记忆合金抗磨损性能的研究  

Study of the anti-wear behaviour of NiTi shape memory alloys

作　　者：于学勇[1] 华征潇[1] 程凤军[2] 杨廷贵[2] 

机构地区：[1]常熟理工学院机电系,江苏常熟215500 [2]四川大学材料成型系,四川成都610065

出　　处：《材料研究与应用》2007年第2期99-102,共4页Materials Research and Application

摘　　要：为了弄清NiTi形状记忆合金的相与磨损性能之间的关系以及合金的磨损特征,研究了六种NiTi合金在相同条件下Ms转变温度对磨损量的影响.研究结果表明,Ni原子分数越高,合金硬度越高,β相含量越高,NiTi合金的抗磨损性能越好.The main objective of this work has been the characterisation and correlation of the wear behaviour of the NiTi SMA in their different phases. The weight losses for the different alloys in function of the present phase, and of the Ms transformation temperature are studied. The thermoelastic martensitic transformations that cause the superelastic effect, the reorientation and coalescence of martensitic plates and the damping effect promotes a high ability to accommodate large deformations without generating permanent damages that causes the wear. The resulting plastic deformation may be accumulated during wear process. The results show that the wear resistance is mainly dependent of the Ms transformation temperature for both alloys. For the NiTi alloys also the Ni atomic percentage and the hardness of the alloys are important parameters in the wear behavior.

关 键 词：形状记忆合金 粘着磨损 镍钛合金 超弹性 

分 类 号：TB381[一般工业技术—材料科学与工程]