The mechanical and physical properties of amorphous alloys depend on their time, temperature, and stress history. Due to their out-of-thermodynamic-equilibrium nature, describing the nonelastic deformation while considering the evolution of the structural state poses a significant challenge. We address this challenge by incorporating a parameter for structural state changes into a conventional deformation theory. This allows us to account for aging-induced ordering and deformation-induced disordering in the description of the mechanical deformation. In the apparent elastic regime (small strain), aging dominates while disorder caused by deformation can be disregarded. In this context, we have also made modifications to the widely used stretched exponential function, incorporating in-situ aging during deformation. This modification successfully describes the stress relaxation behavior under small deformation conditions and provides insights into parameter evolution in this process. Under large deformation conditions, both aging and deformation induced rejuvenation effects on the structural state must be considered simultaneously. By analyzing the evolution of defect concentration during this process, we describe relevant experimental results within the framework of the free volume theory, effectively separating the contributions of aging and rejuvenation to the structural state during the deformation process.

中文翻译：

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解读非晶合金中的非弹性变形：同时老化引起的有序和再生引起的无序

非晶合金的机械和物理性能取决于其时间、温度和应力历史。由于其非热力学平衡性质，在考虑结构状态演化的同时描述非弹性变形提出了重大挑战。我们通过将结构状态变化的参数纳入传统变形理论来解决这一挑战。这使我们能够在机械变形的描述中解释老化引起的有序和变形引起的无序。在表观弹性状态（小应变）中，老化占主导地位，而变形引起的无序可以忽略不计。在这种情况下，我们还对广泛使用的拉伸指数函数进行了修改，纳入变形过程中的原位时效。这种修改成功地描述了小变形条件下的应力松弛行为，并为该过程中的参数演化提供了见解。在大变形条件下，必须同时考虑老化和变形诱导恢复对结构状态的影响。通过分析该过程中缺陷浓度的演变，我们在自由体积理论的框架内描述了相关的实验结果，有效地分离了变形过程中老化和再生对结构状态的贡献。