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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Evaluation of approximate measurements of activation-free-energy spectra of shear transformation zones in metallic glasses
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Evaluation of approximate measurements of activation-free-energy spectra of shear transformation zones in metallic glasses

机译：金属玻璃中剪切转变区的无活化能谱的近似测量值的评价

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摘要

For many years, the only experimental activation free energy spectrum for shear transformations in metallic glasses had been obtained by quenching from high temperature during creep, followed by temperature stepping (Argon and Kuo, 1980). We show that the approximation associated with attributing a single activation energy to each temperature leads to an artificial drop in the spectrum at high activation energies. The detailed spectra of potential shear transformation zones we have recently obtained, which exhibit an atomically quantized hierarchy and are monotonic, lead to the same spectrum shape as obtained by Argon and Kuo when the approximation inherent to the temperature stepping method is applied. (C) 2014 Elsevier B.V. All rights reserved.
机译：多年来，通过在蠕变过程中从高温淬火，然后进行温度步进，获得了金属玻璃中剪切转变的唯一实验性活化自由能谱（Argon和Kuo，1980）。我们表明，与将单个激活能量分配给每个温度相关的近似值会导致在高激活能量下光谱的人为下降。我们最近获得的潜在剪切转变区的详细光谱显示出原子量化的层次结构，并且是单调的，从而导致在应用温度步进方法固有的近似值时，与Argon和Kuo获得的光谱形状相同。 （C）2014 Elsevier B.V.保留所有权利。

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