On rate-dependent serrated flow behavior in amorphous metals during nanoindentat

2019-08-30 11:08:16

flow rate amorphous metals dependent

责任者: Zhang, G.P.;Wang, W.;Zhang, B.;Tan, J.;Liu, C.S. 单位: Shenyang Natl. Lab. for Mat. Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China 来源出处: Scripta Materialia,2005,52(11):1147-1151 摘要: Strain rate-dependent serrated flow behavior in amorphous metals under instrumented indentation has been demonstrated in recent years. It is argued that the rate-dependence results from either the number of shear bands that operate at every instant or the instrumental resolution. In this paper, an experimental study and an analysis of the physical process of the pop-in event in amorphous metals during nanoindentation are presented, which may provide further understanding of the origin of the rate-dependent serrated flow. © 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. 关键词: Amorphous materials;Indentation;Flow of solids;Strain rate;Thin films;Stiffness;Plastic deformation;Energy dissipation;Metallic glass;Shear stress;Crystallization;Amorphous metals;Serrated flow;Nanoindentation;Shear band