贺志荣,刘琳,吴佩泽,刘康凯,王家乐

• 1:陕西理工大学材料科学与工程学院

摘要(Abstract)：

用熔体快淬法制备了激冷Ti-x Ni(x=45,46,48,49,49.5%,原子分数)形状记忆合金薄带,用SEM、XRD、示差扫描热分析仪和弯曲试验研究了合金薄带的显微组织、相组成、相变行为和形状记忆行为。结果表明:铸态及450℃、500℃退火态激冷富钛Ti-Ni合金薄带的组织形态呈树枝状,亚结构为孪晶,Ni含量和中温退火对合金薄带显微组织影响不大;合金薄带的组成相为马氏体M(B19')+母相A(B2),冷却/加热时发生A→M/M→A一阶段马氏体相变;随Ni含量增加,激冷富钛Ti-Ni合金薄带的马氏体相变温度(T_M)缓慢升高,当Ni含量超过49%后,TM温度急剧下降;Ti-46Ni、Ti-48Ni和Ti-49Ni合金薄带具有较高的相变温度,Ti-45Ni、Ti-46Ni和Ti-48Ni合金薄带具有较小的相变热滞;铸态和中温退火态激冷富钛Ti-Ni合金薄带皆具有优异的形状记忆效应。

关键词(KeyWords)： 富钛Ti-Ni形状记忆合金;激冷Ti-Ni合金薄带;显微组织;相变;形状记忆效应

Abstract:

Keywords:

基金项目(Foundation): 陕西省大学生创新创业训练项目(20162255);; 汉中天杰电力机具公司项目(208021001)

作者(Author): 贺志荣,刘琳,吴佩泽,刘康凯,王家乐

DOI: 10.13289/j.issn.1009-6264.2016.11.003

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