【作者】 燕铸； 崔立山； 郑雁军；

【Author】 YAN Zhu CUI Li-shan ZHENG Yan-jun (Department of Materials Science and Engineering,China University of Petroleum,Beijing 102249,China)

【机构】 中国石油大学材料科学与工程系；

【摘要】 采用爆炸焊将两块原子百分比不同的 NiTi 合金制成大块成分不均匀的 NiTi/NiTi 复合板,并在此基础上对其相变行为以及相应的回复应变特征进行了研究。结果表明焊后的复合板具有良好的界面结合和可逆马氏体相变；冷变形后 NiTi/NiTi 合金的逆相变温度及其相变温度范围随预应变量的增大而升高；同时,在较宽的温度范围内得到两步回复应变。更多还原

【Abstract】 The aim of this study was an initial attempt to prepare bulk NiTi/NiTi shape memory alloys with macroscopic heterogeneity in composition by explosive welding and investigate the transformation behavior and strain recovery characteristics of the resulting laminates.After explosive welding,a perfect interfacial bonding between the two components and a reversible martensitic transformation were obtained in the tandem.The DSC results showed that the reverse transformation temperatures and the temperature range of NiTi-NiTi alloys increased with increasing prestrain level.Meanwhile,a two-stage strain recovery in a wide temperature range was obtained.更多还原