Signature of viscous flow units in apparent elastic regime of metallic glasses

被引：167

作者：

Wang, Z. ^{[1
]}

Wen, P. ^{[1
]}

Huo, L. S. ^{[1
]}

Bai, H. Y. ^{[1
]}

Wang, W. H. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 12期

关键词：

DEFORMATION; RELAXATION; DYNAMICS; LIQUIDS; MODELS;

D O I：

10.1063/1.4753813

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We characterize and identify the flow units in two typical metallic glasses (MGs), which have markedly different beta-relaxation behaviors and mechanical properties. The viscoelastic hysteresis loops are found in the cyclic deformation in the nominal elastic regime of the metallic glasses. We show that the hysteresis loops are related to the activation of the flow units in metallic glasses, and a model is proposed to describe the flow units. We demonstrate that the flow units are both the deformation units of the anelastic and plastic deformation behaviors and the structural origin of the beta-relaxation in metallic glasses. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4753813]

引用

页数：4

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