固溶淬火态Ti100-xNix合金中,x=40.0-49.0时,合金的马氏体相变(MT)温度(TM)、热滞(△TM)不变,相变热(△HM)升高;x=49.0-52.0时,合金的TM和△HM急剧下降,△TM急剧升高;x=52.0-56.0时,合金的TM和△HM升高,△TM降低;x=56.0-70.0时,合金的TM和△TM变化不大,△HM下降.673 K时效态Ti100-xNix合金中,x=40.0-50.0时,合金发生MT,不存在时效效应;x=50.5-70.0时,合金既发生MT又发生R相相变(RT)且具有时效效应.随时效时间(tA)延长,TM和△HM先下降后上升,△TM下降.TR随x增加保持不变,随tA延长而升高△TR对x和tA不敏感.△HR对x和tA都十分敏感.x=40.0-50.0和x=50.5-70.0合金的室温组织分别为M+TiNi2和A(母相)+析出物.随x增加或tA延长,x=50.5-70.0的合金中析出物数量增多.
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