Co content effect on elastic strain limit in ZrCuNiAlCo bulk metallic glasses

被引：18

作者：

Dong, Y. ^{[1
]}

Wunderlich, R. ^{[1
]}

Biskupek, J. ^{[2
]}

Cao, Q. P. ^{[3
,4
]}

Wang, X. D. ^{[3
,4
]}

Zhang, D. X. ^{[5
]}

Jiang, J. Z. ^{[3
,4
]}

Fecht, H. -J. ^{[1
]}

机构：

[1] Univ Ulm, Inst Micro & Nanomat, Albert Einstein Allee 47, D-89081 Ulm, Germany

[2] Univ Ulm, Electron Microscopy Grp Mat Sci, Albert Einstein Allee 11, D-89081 Ulm, Germany

[3] Zhejiang Univ, Int Ctr New Struct Mat, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

[4] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

[5] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

SCRIPTA MATERIALIA | 2017年 / 137卷

基金：

中国国家自然科学基金;

关键词：

Bulk metallic glass; Inhomogeneous structure; Elastic strain limit; Mechanical properties; MECHANICAL-PROPERTIES; SUPERCOOLED LIQUID; TRANSITION TEMPERATURE; FORMING ABILITY; SHEAR BANDS; DEFORMATION; COMPOSITES; PLASTICITY; STRENGTH;

D O I：

10.1016/j.scriptamat.2017.05.007

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructures and mechanical properties of Zr64-xNi10Al7Cu19Cox (x = 0-16 at.%) bulk metallic glasses (BMGs) were investigated as a function of cobalt content. Due to negative mixing enthalpy between cobalt and zirconium, the atomic packing structure of studied BMGs changes with the addition of cobalt while the positive mixing enthalpy between cobalt and copper leads to phase separation and the formation of nanoglass with glassy grain sizes of about 5-10 nm. With the unique topological structure, the stored recoverable elastic energy in these studied BMGs increases dramatically with the increasing cobalt content. The Zr55.7Ni10Al7Cu19Co8.3 BMG exhibits excellent mechanical properties at ambient temperature. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：94 / 99

页数：6

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