【摘要】 为研究Ni₅₁Ti_48.5Nb_0.5（原子分数%）合金的温度记忆效应，通过熔炼、锻造、拔丝及固溶时效处理制备了NiTiNb合金丝材，利用差示扫描量热仪（DSC）、电阻等表征了样品的相变行为，并利用DSC研究了逆相变中断温度对再次正相变及再次逆相变的影响。结果表明，NiTiNb合金存在温度记忆效应。再次正相变过程中的相变路径，马氏体相变起始温度及再次逆相变中的过热温度均受到逆相变中断温度的影响，且存在一定的规律。更多还原

【Abstract】 In order to study the temperature memory effect of Ni₅₁Ti_48.5Nb_0.5（at. %） alloy, the NiTiNb alloy was prepared by melting, forging, wire drawing, solution and aging treatment. The transformation behavior of the sample was characterized by differential scanning calorimeter（DSC）, resistance test, etc. The effect of the interrupt temperature of reverse transformation on the re-forward and re-reverse transformation was studied by DSC. The results show that the temperature memory effect was observed in NiTiNb alloy. The transformation path, the start temperature of martensitic transformation and the overheat temperature during the reverse transformation are all affected by the interrupt temperature in reverse transformation, and there exists a certain rule.更多还原