利用示差扫描量热仪研究了预变形和热循环对Ni50Ti45Ta5形状记忆合金相变行为的影响.研究结果表明:预变形后合金的马氏体发生了稳定化现象.形变后第一次热循环, 逆相变温度增加,正相变温度降低;而第二次相变循环,马氏体的稳定化现象消失.热循环使相变温度降低,减少了相变热.
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