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Micro-scaled plastic yielding and shear-banding dynamics in metallic glasses 被引量:2

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摘要 Shear-banding behavior in metallic glasses plays a key role in the operation of plastic deformation,which is associated with yield strength.In a micro-scale,the shear-banding behavior must be affected by many factors from the test machine and the substrate.Therefore,in this study,comprehensively considering a machine compliance,a geometry imperfection of micro-pillar,and a substrate sink-in the machine-sample-substrate system,we developed a plastic-strength model at a micrometer scale in this study,which is evidenced by the microscale compressive properties of 18 kinds of metallic glasses.The the-oretical model provides a guidance for the elastic limits and shear-banding dynamics of metallic glasses at the micro-scale,which can be applicable to characterize the microscale deformation behavior of other amorphous materials.
出处 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第21期237-246,共10页 材料科学技术(英文版)
基金 This work was financially supported by the National Natural Science Foundation of China(Nos.51925103,51801027) the program 173(No.2020-JCIQ-ZD-186-01) China Postdoctoral Science Foundation(No.2022M713334) the Research Grants Council of the Hong Kong Special Administrative Region,China(No.PolyU 15222017).
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