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AuCd合金的马氏体相变内耗峰随着热循环次数的增加而升高。金相观察表明这与相界面的增多有关。并提出了一个应力感生界面位错运动的静滞后损耗模型。在Ms点以上测得一个新的内耗峰,是一个和热激活有关的弛豫峰。含46.1at。％Cd的AuCd合金在几次循环测量后,可使立方(?)正交相变变为立方(?)六方相变,对这一变化的机理进行了分析。
The internal friction martensitic transformation peak of AuCd alloy increases with the increase of the number of thermal cycles. Metallographic observation shows that this is related to the increase of phase interface. A model of post-lag loss for dislocation motion of stress-induced interface is proposed. A new internal friction peak measured above the Ms point is a relaxation peak related to thermal activation. Contains 46.1at. After several cycles of measurement, the AuCd alloy containing% Cd changed the cubic phase to the cubic hexagonal phase transformation, and the mechanism of this change was analyzed.