激冷Ti-46Ni合金薄带的组织、相变和形状记忆效应  

Microstructure,Transformation and Shape Memory Effect of Chilled Ti-46Ni Alloy Ribbon

作　　者：贺志荣[1] 刘琳[1] 周超[1] 吴佩泽[1] 邹启明[1] He Zhirong Liu Lin Zhou Chao Wu Peize Zou Qiming(Shaanxi University of Technology, Hanzhong 723001, China)

机构地区：[1]陕西理工大学,陕西汉中723001

出　　处：《稀有金属材料与工程》2017年第9期2445-2448,共4页Rare Metal Materials and Engineering

基　　金：陕西省大学生创新创业训练项目(20151950);陕西理工学院研究生创新基金项目(SLGYCX1534)

摘　　要：用激冷甩带法制备了Ti-46Ni合金薄带,用扫描电子显微镜、X射线衍射仪、示差扫描热分析仪和弯曲试验研究了合金薄带的组织特征、相变行为和形状记忆效应。结果表明,铸态及400~600℃退火态Ti-46Ni合金薄带的显微组织形态呈树枝状,晶粒细小,由B19?马氏体和B2母相组成;在冷却、加热过程中,该合金薄带发生一阶段马氏体相变;铸态和退火态Ti-46Ni合金薄带均具有良好的形状记忆效应。Ti-46Ni alloy ribbons were fabricated by melt-spinning. The microstructure characteristics,the transformation behaviors and shape memory effect of the Ti-46Ni alloy ribbons were investigated by SEM,XRD,differential scanning calorimetry and bending test. The results show that the microstructure morphologies of as-cast and 400~600 °C annealed Ti-46Ni alloy ribbons are dendritic,the grain is small,and the composition phases are martensite（B19？） and parent phase（B2）. The one stage martensite transformation appears upon cooling and heating. The as-cast and annealed Ti-46Ni alloy ribbons are both of excellent shape memory effect.

关 键 词：Ti-46Ni合金 形状记忆合金薄带 组织 相变 形状记忆效应 

分 类 号：TG139.6[一般工业技术—材料科学与工程]