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研究了淬火Al-Zn共析合金中非平衡Spinodal预相变和后继的不连续转变低频内耗特征和模量效应。在非平衡Spinodal预相变中,观察到存在着与大幅度长波长的静态浓度波相联系的Spinodal失稳并没有引起局部模量软化效应。Spinodal预转变共格性的出现与消失和不连续转变中相界面面积的最大值,引起各自相应的时效内耗峰,但与峰相应的模量软化效应并未发生。
The effects of unbalanced Spinodal pre-phase transformation and subsequent discontinuous transformation low-frequency internal friction characteristics and modulus effects in quenched Al-Zn eutectoid alloys were investigated. In the unbalanced Spinodal pre-phase transformation, it is observed that there is no spinodal instability caused by Spinodal instability, which is associated with a large amplitude of the long-wavelength static concentration wave. Spinodal pre-transitional appearance of co-occurrence and disappearance of discontinuous transitions in the interfacial area of the maximum, causing the corresponding peak consumption within the time-consuming, but the corresponding peak modulus softening effect does not occur.