Effects of Aspect Ratio on the Shear Band Arrangements of Zr-Based Metallic Glasses

被引：14

作者：

Feng, Shidong ^{[1
]}

Li, Gong ^{[1
,2
]}

Yu, Pengfei ^{[1
]}

Zhang, Shiliang ^{[1
]}

Ma, Mingzhen ^{[1
]}

Qi, Li ^{[1
]}

Liu, Riping ^{[1
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2015年 / 46A卷 / 03期

基金：

中国国家自然科学基金;

关键词：

BULK AMORPHOUS-ALLOYS; DEFORMATION-BEHAVIOR; SUPERCOOLED LIQUID; FORMING ABILITY; PLASTICITY; FLOW; ZR41.2TI13.8CU12.5NI10.0BE22.5; FRACTURE; STRESS; STATE;

D O I：

10.1007/s11661-014-2666-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of aspect ratios of Zr-based metallic glasses on the shear band arrangements are investigated through molecular dynamics simulations and experiments. It is found that as the aspect ratio decreases, the dense multiple shear bands form, effectively depressing the formation of the penetrating shear bands, which improves plasticity and strength of metallic glass. Simulation reproduces the images of the evolution of the shear bands in metallic glass, explaining the experimental observation. It is found that as the aspect ratio decreases, shear transformation zones disperse evenly in the entire model, restraining connecting into penetrating shear bands. (C) The Minerals, Metals & Materials Society and ASM International 2014

引用

页码：1119 / 1124

页数：6

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