（1 Harbin Institute of Technology, Harbin 150001, China） （2 Beihang University，Beijing 100191，China） （3 China University of Petroleum Beijing ，Beijing 266580，China）
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DOI:
10.7502/j.issn.1674-3962.2012.12.05
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Abstract:
The recent development of TiNibased high temperature shape memory alloys (SMAs) and their applications were reviewed in this paper.The TiNibased high temperature SMAs mainly include TiNiPd,TiNiZr and TiNiHf alloys.The phase transformation temperatures can be adjusted by aging treatment.The martensitic transformation behaviors,microstructure,shape memory effect and superelasticity properties of TiNibased high temperature SMA bulk materials,ribbons and thin films were summarized.The strengthening caused by the precipitation of nanoscale particle during aging in TiNiHf alloys should be responsible for the improvement of shape memory effect and superelasticity properties.It has been presented that finding the ways to increase the transformation temperatrues and improve shape memory effect is the main trend of research and development of TiNIbased high temperature SMAs.