Serrated plastic flow during nanoindentation in Nd-based bulk metallic glasses

被引：40
|
作者：
Wei, BC [1 ]
Zhang, TH
Li, WH
Sun, YF
Yu, Y
Wang, YR
机构：
[1] Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China
[3] Shanghai Univ, Inst Mat, Shanghai 200072, Peoples R China
来源：
INTERMETALLICS | 2004年 / 12卷 / 10-11期
关键词：
composites; glasses; metallic; mechanical properties at ambient temperature;
D O I：
10.1016/j.intermet.2004.04.030
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 microstructure of Nd60Al10Ni10Cu20-xFex (x = 0, 5, 7, 10, 15, 20) alloys can change from homogeneous phase to a composite structure consisting of amorphous phase plus clusters or nanocrystals by adjusting the Fe content. The effect of microstructure on the plastic deformation behavior in this alloy system is studied by using nanoindentation. The alloys with homogeneous amorphous structure exhibit pronounced flow serrations during the loading process of nanoindentation. The addition of Fe changes the plastic deformation behavior remarkablely. No flow serration is observed in the alloys with high Fe content for the indentation depth of 500 nm. The mechanism for the change of plastic serrated flow behavior is discussed. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1239 / 1243
页数：5
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