Enhanced mechanical properties in a Zr-based metallic glass caused by deformation-induced nanocrystallization

被引：44
|
作者：
Fornell, J. [1 ]
Rossinyol, E.
Surinach, S. [1 ]
Baro, M. D. [1 ]
Li, W. H. [2 ]
Sort, J. [1 ,3 ]
机构：
[1] Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain
[2] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan Anhui 243002, Peoples R China
[3] Univ Autonoma Barcelona, Inst Catalana Recerca & Estudis Avancats, Bellaterra 08193, Spain
来源：
SCRIPTA MATERIALIA | 2010年 / 62卷 / 01期
关键词：
Metallic glasses; Crystallization; Nanoindentation; BULK AMORPHOUS-ALLOYS; ROOM-TEMPERATURE; VICKERS INDENTATION; PLASTIC-DEFORMATION; HIGH-STRENGTH; SHEAR BANDS; FREE-VOLUME; NANOINDENTATION; EVOLUTION; BEHAVIOR;
D O I：
10.1016/j.scriptamat.2009.09.014
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Bulk metallic glass with composition Zr62Cu18Ni10Al10 exhibits high yield stress, large elasticity and large plasticity when compressed. During nanoindentation, strain hardening is observed until the maximum applied load reaches 100 mN; for higher maximum loads the typical softening found in metallic glasses is evidenced. Transmission electron microscopy observation of the nanoindented and compressed samples reveals the occurrence of deformation-induced nanocrystallization, which is likely to be related to the mechanical properties observed in this alloy. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：13 / 16
页数：4
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