【摘要】 本文评述了近年来有关 TiNi 形状记忆合金的时效及其对合金机械行为的影响方面的文献资料,系统地综述了 TiNi 形状记忆合金时效过程中富镍相的析出行为、析出相的结构及晶体学关系,探讨了富镍相对合金预马氏体相变及马氏体相变、伪弹性及记忆效应影响的机理,并提出了尚待解决的问题。更多还原

【Abstract】 Recent works about the aging and its effect on the,mechanical behaviors of the TiNi shape memnry alloys have been revrewed.The precipitation proce- sa,crystal structure and crystallograpic orientation relationship of the Ni-rich precipitates in TiNi shape memory alloys during aginy are sistematically describ- ed.The mechanisms for the effects of the Ni-rich precipitates on the pre-mart- ensitic and martensitic tran sfoimations,the pseudoclasticity and shape memoty effect have also been discussed.Finally some of the problems to be solved are pointed.更多还原