Abstract Dynamic mechanical relaxation, stress relaxation and creep were performed in a La56.16Ce14.04Ni19.8Al10 metallic glass with pronounced β relaxation features. The evolution of the microstructural heterogeneity with temperature is indirectly revealed via dynamic heterogeneity and analyzed in terms of several independent theoretical approaches. An apparent activation energy of β relaxation is obtained by assuming the Arrhenius relationship, which is calibrated by either the activation enthalpy of stress relaxation or the activation energy of creep. It is found that similar deformation mechanisms accommodate the dynamics of the LaCe-based metallic glass under different types of external stimuli applied in mechanical experiments.

中文翻译：

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从通用动态刺激对 LaCe 基金属玻璃结构异质性的统一视角

摘要 在具有明显β弛豫特征的La56.16Ce14.04Ni19.8Al10金属玻璃中进行了动态机械弛豫、应力弛豫和蠕变。微观结构异质性随温度的演变通过动态异质性间接揭示，并根据几种独立的理论方法进行分析。β弛豫的表观活化能是通过假设阿伦尼乌斯关系获得的，该关系由应力弛豫的活化焓或蠕变的活化能校准。发现类似的变形机制适应了在机械实验中应用的不同类型的外部刺激下 LaCe 基金属玻璃的动力学。