β-relaxation related bright bands in thin film metallic glasses: Localized percolation of flow units captured via transmission electron microscope

被引：4

作者：

Chen, Z. Q. ^{[1
]}

Huang, P. ^{[1
]}

Xu, K. W. ^{[1
]}

Wang, F. ^{[2
]}

Lu, T. J. ^{[2
,3
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

[2] Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China

[3] Xi An Jiao Tong Univ, MOE Key Lab Multifunct Mat & Struct, Xian 710049, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2016年 / 109卷 / 26期

基金：

中国国家自然科学基金;

关键词：

SHEAR BANDS; SECONDARY RELAXATION; PLASTIC-DEFORMATION; TRANSITION; LIQUIDS; ALLOY;

D O I：

10.1063/1.4972983

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report that beta-relaxation of amorphous NiW alloy film was effectively enhanced by adding two thin crystalline layers into the amorphous layer. Correspondingly, more bright bands, i.e., nano shear bands, were captured in the amorphous layer, which experienced more pronounced beta-relaxations. Based on the potential energy landscape theory, the bright band was proposed to be the localized percolation of flow units corresponding to beta-relaxation. Our findings may help connecting experimentally beta-relaxation with flow units and shed light on the microstructure origin of b-relaxation. Published by AIP Publishing.

引用

页数：5

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