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Consistency of the free-volume approach to the homogeneous deformation of metallic glasses

机译:自由体积方法对金属玻璃均匀变形的一致性

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摘要

One of the most widely used approaches to model metallic-glasses high-temperature homogeneous deformation is the free-volume theory, developed by Cohen and Turnbull and extended by Spaepen. A simple elastoviscoplastic formulation has been proposed that allows one to determine various parameters of such a model. This approach is applied here to the results obtained by de Hey et al. on a Pd-based metallic glass. In their study, de Hey et al. were able to determine some of the parameters used in the elastoviscoplastic formulation through DSC modeling coupled with mechanical tests, and the consistency of the two viewpoints was assessed.
机译:由Cohen和Turnbull提出并由Spaepen扩展的自由体积理论是对金属玻璃高温均匀变形进行建模的最广泛使用的方法之一。已经提出了一种简单的弹性粘塑性制剂,其使得可以确定这种模型的各种参数。这种方法在这里应用于de Hey等人获得的结果。在基于Pd的金属玻璃上。在他们的研究中,de Hey等人。能够通过DSC建模和机械测试确定弹性粘塑性配方中使用的一些参数,并评估了两种观点的一致性。

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