Reduced strain rate sensitivity by structural rejuvenation in metallic glass under nanoindentation

被引：5

作者：

Chen, Wei ^{[1
]}

Wang, Haitao ^{[1
]}

机构：

[1] Shenzhen Polytech, Shenzhen 518055, Guangdong, Peoples R China

来源：

MATERIALS LETTERS | 2021年 / 298卷 / 298期

关键词：

Amorphous materials; Metals and alloys; Rejuvenation; Deformation and fracture; Strain rate sensitivity; FLOW;

D O I：

10.1016/j.matlet.2021.130037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Through tailoring the energy state of a Zr-based metallic glass (MG) by constrained compression, we revealed that the strain rate sensitivity of MGs strongly depends on the energy state. For the as-cast MG with low energy state, hardness increases with the increasing strain rate, showing a positive m value of 0.0132. However, the hardness is independent on the strain rate in the highly rejuvenated MG with a high energy state. These observations can be well understood from free volume model. (c) 2021 Elsevier B.V. All rights reserved.

引用

页数：4

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