Z. Dong, Dongpeng Wang, Yicheng Wu, Y. Geng, Fugang Chen, P. Guo, Yaoxin Qiao, Xin Li, Yuxin Wang
{"title":"Nano-voids formation at the interaction sites of shear bands in a Zr-based metallic glass","authors":"Z. Dong, Dongpeng Wang, Yicheng Wu, Y. Geng, Fugang Chen, P. Guo, Yaoxin Qiao, Xin Li, Yuxin Wang","doi":"10.1051/epjap/2022220284","DOIUrl":null,"url":null,"abstract":"Understanding the formation mechanism of voids is a significant issue in controlling the catastrophic fracture in the form of shear bands in metallic glasses. Here, using an amplitude-modulation atomic force microscope, we investigated the nano-voids formation at the mutual interaction of shear bands in a Cu50Zr50 metallic glass. The results of phase shift revealed higher energy dissipation and more soft zones for the nano-voids. The formation of these nano-voids results from tensile stress concentration caused by the interaction of shear bands, based on the results of finite element simulation. The appearance of nano-voids and stress distribution at the site of shear band interaction is essential in understanding the plastic deformation and fracture of metallic glasses.","PeriodicalId":301303,"journal":{"name":"The European Physical Journal Applied Physics","volume":"23 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The European Physical Journal Applied Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1051/epjap/2022220284","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Understanding the formation mechanism of voids is a significant issue in controlling the catastrophic fracture in the form of shear bands in metallic glasses. Here, using an amplitude-modulation atomic force microscope, we investigated the nano-voids formation at the mutual interaction of shear bands in a Cu50Zr50 metallic glass. The results of phase shift revealed higher energy dissipation and more soft zones for the nano-voids. The formation of these nano-voids results from tensile stress concentration caused by the interaction of shear bands, based on the results of finite element simulation. The appearance of nano-voids and stress distribution at the site of shear band interaction is essential in understanding the plastic deformation and fracture of metallic glasses.
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