本文用差示扫描量热法研究了Cu 对NiTi 记忆合金马氏体相变点及相变潜热的影响。结果表明,以Cu 代替Ni 至30 at.%,合金仍具有良好的记忆性能;合金相变温度及相变潜热值略有变化,相变滞后明显减小;Cu 含量对合金相变类型没有影响。相变潜热值△H 与T_0=1/2(A_s+M_s)并不存在严格的直线关系。Cu 含量超过7.5at.—%时,合金的热加工性能变差。
The effect of Cu on the transformation temperature and latent heat of trans-formation in NiTi shape memory alloys has been studied by means of DSC.It is shown thatthese alloys exhibit excellent shape memory properties.The transformation temperatureand lat
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