Atomic origin for rejuvenation of a Zr-based metallic glass at cryogenic temperature

被引：26

作者：

Bian, X. L. ^{[1
]}

Wang, G. ^{[1
]}

Yi, J. ^{[1
]}

Jia, Y. D. ^{[1
]}

Bednarcik, J. ^{[2
]}

Zhai, Q. J. ^{[1
]}

Kaban, I. ^{[3
]}

Sarac, B. ^{[4
]}

Muehlbacher, M. ^{[4
]}

Spieckermann, F. ^{[4
]}

Keckes, J. ^{[4
]}

Eckert, J. ^{[4
,5
]}

机构：

[1] Shanghai Univ, Inst Mat, Lab Microstruct, Shanghai, Peoples R China

[2] DESY, Photon Sci, Notkestr 85, D-22607 Hamburg, Germany

[3] IFW Dresden, Inst Complex Mat, Helmholtzstr 20, D-01069 Dresden, Germany

[4] Univ Leoben, Dept Mat Phys, Jahnstr 12, A-8700 Leoben, Austria

[5] Austrian Acad Sci, Erich Schmid Inst Mat Sci, Jahnstr 12, A-8700 Leoben, Austria

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 718卷

基金：

上海市自然科学基金; 欧洲研究理事会; 中国博士后科学基金;

关键词：

Metallic glass; High energy X-ray diffraction; Volume shrinkage; Atomic structural evolution; PLASTIC-DEFORMATION; LIQUID TRANSITION; ELASTIC-CONSTANTS; THERMAL-EXPANSION; BEHAVIOR; SILICON; DEPENDENCE; EVOLUTION; STRENGTH; MODEL;

D O I：

10.1016/j.jallcom.2017.05.124

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The temperature-dependent atomic structural evolution of a Zr64.13Cu15.75Ni10.12Al10 metallic glass is studied by in-situ high-energy X-ray diffraction in the temperature range of 79-553 K. The interatomic distance in the first nearest neighbor shell increases with decreasing temperature, while the interatomic distance in other atomic shells decreases. This decrease in the interatomic distances causes volume shrinkage and an increase in the strength of the metallic glass. The volume shrinkage can be quantitatively described by the Varshni function. The structural information is helpful for deeply understanding of the origin of the rejuvenation of metallic glasses at the cryogenic temperatures. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：254 / 259

页数：6

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