Atomic-level structural modifications induced by severe plastic shear deformation in bulk metallic glasses

被引：85

作者：

Wang, X. D. ^{[1
,2
]}

Cao, Q. P. ^{[1
,2
]}

Jiang, J. Z. ^{[1
,2
]}

Franz, H. ^{[3
]}

Schroers, J. ^{[4
]}

Valiev, R. Z. ^{[5
]}

Ivanisenko, Y. ^{[6
,7
]}

Gleiter, H. ^{[6
,7
]}

Fecht, H-J ^{[6
,7
]}

机构：

[1] Zhejiang Univ, ICNSM, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Dept Mat Sci & Engn, Lab New Struct Mat, Hangzhou 310027, Peoples R China

[3] Deutsch Elekt Synchrotron, Hamburger Synchrotronstrahlungslabor, D-22603 Hamburg, Germany

[4] Yale Univ, New Haven, CT 06511 USA

[5] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia

[6] Univ Ulm, Inst Micro & Nanomat, D-89081 Ulm, Germany

[7] Karlsruhe Inst Technol, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

SCRIPTA MATERIALIA | 2011年 / 64卷 / 01期

基金：

美国国家科学基金会;

关键词：

Bulk metallic glass; Severe plastic deformation; Shear bands; Nanoglass; MEDIUM-RANGE ORDER; AMORPHOUS-ALLOYS; SUPERCOOLED LIQUID; FREE-VOLUME; ZR; PD40NI40P20; BANDS; FLOW;

D O I：

10.1016/j.scriptamat.2010.09.015

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Structural evolution of an Au-based bulk metallic glass (BMG) after severe plastic deformation (SPD) was investigated The newly formed glass contains high-density shear bands, a reduced ordering and a concomitant excess free volume Moreover, it exhibits a less changed local structure even in the supercooled liquid region, but a reduced thermal stability reflected in an accelerated crystal nucleation and growth process These results suggest that SPD modifies the atomic structure of BMGs by localized shear band formation, thus producing so-called nanoglasses (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved

引用

页码：81 / 84

页数：4

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