Quasi-work-hardening at sites of shear band interactions in a Cu50Zr50 metallic glass

D.P. Wang; A.D. Wang; Y.C. Hu; B.A. Sun; C.T. Liu

doi:10.1016/j.matlet.2020.128655

Quasi-work-hardening at sites of shear band interactions in a Cu₅₀Zr₅₀ metallic glass

D.P. Wang, A.D. Wang, Y.C. Hu, B.A. Sun, C.T. Liu^*

^*Corresponding author for this work

Centre for Advanced Structural Materials

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

6 Citations (Scopus)

Abstract

Using a powerful method of contact-resonance atomic force microscope, we studied the elastic modulus at shear band (SB) interactions in a Cu₅₀Zr₅₀ metallic glass (MG). A quasi-work-hardening effect is observed: the interaction site is harder than the SB itself, but softer than the undeformed matrix. Therefore, the interaction site is not the weakest position during the deformation process of MGs. Large-scale molecular dynamics simulation suggests that this quasi-work-hardening effect is correlated to a locally configurational evolution of shear-resistant cluster. Our findings are useful for understanding the deformation mechanism of multi-SBs in MGs.

Original language	English
Article number	128655
Journal	Materials Letters
Volume	281
Online published	11 Sept 2020
DOIs	https://doi.org/10.1016/j.matlet.2020.128655
Publication status	Published - 15 Dec 2020

Research Keywords

Amorphous materials
Elastic properties
Interaction
Shear band
Work-hardening

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10.1016/j.matlet.2020.128655

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title = "Quasi-work-hardening at sites of shear band interactions in a Cu50Zr50 metallic glass",

abstract = "Using a powerful method of contact-resonance atomic force microscope, we studied the elastic modulus at shear band (SB) interactions in a Cu50Zr50 metallic glass (MG). A quasi-work-hardening effect is observed: the interaction site is harder than the SB itself, but softer than the undeformed matrix. Therefore, the interaction site is not the weakest position during the deformation process of MGs. Large-scale molecular dynamics simulation suggests that this quasi-work-hardening effect is correlated to a locally configurational evolution of shear-resistant cluster. Our findings are useful for understanding the deformation mechanism of multi-SBs in MGs.",

keywords = "Amorphous materials, Elastic properties, Interaction, Shear band, Work-hardening, Amorphous materials, Elastic properties, Interaction, Shear band, Work-hardening, Amorphous materials, Elastic properties, Interaction, Shear band, Work-hardening",

author = "D.P. Wang and A.D. Wang and Y.C. Hu and B.A. Sun and C.T. Liu",

year = "2020",

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doi = "10.1016/j.matlet.2020.128655",

language = "English",

volume = "281",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Quasi-work-hardening at sites of shear band interactions in a Cu50Zr50 metallic glass

AU - Wang, D.P.

AU - Wang, A.D.

AU - Hu, Y.C.

AU - Sun, B.A.

AU - Liu, C.T.

PY - 2020/12/15

Y1 - 2020/12/15

N2 - Using a powerful method of contact-resonance atomic force microscope, we studied the elastic modulus at shear band (SB) interactions in a Cu50Zr50 metallic glass (MG). A quasi-work-hardening effect is observed: the interaction site is harder than the SB itself, but softer than the undeformed matrix. Therefore, the interaction site is not the weakest position during the deformation process of MGs. Large-scale molecular dynamics simulation suggests that this quasi-work-hardening effect is correlated to a locally configurational evolution of shear-resistant cluster. Our findings are useful for understanding the deformation mechanism of multi-SBs in MGs.

AB - Using a powerful method of contact-resonance atomic force microscope, we studied the elastic modulus at shear band (SB) interactions in a Cu50Zr50 metallic glass (MG). A quasi-work-hardening effect is observed: the interaction site is harder than the SB itself, but softer than the undeformed matrix. Therefore, the interaction site is not the weakest position during the deformation process of MGs. Large-scale molecular dynamics simulation suggests that this quasi-work-hardening effect is correlated to a locally configurational evolution of shear-resistant cluster. Our findings are useful for understanding the deformation mechanism of multi-SBs in MGs.

KW - Amorphous materials

KW - Elastic properties

KW - Interaction

KW - Shear band

KW - Work-hardening

KW - Amorphous materials

KW - Elastic properties

KW - Interaction

KW - Shear band

KW - Work-hardening

KW - Amorphous materials

KW - Elastic properties

KW - Interaction

KW - Shear band

KW - Work-hardening

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85090925606&origin=recordpage

U2 - 10.1016/j.matlet.2020.128655

DO - 10.1016/j.matlet.2020.128655

M3 - RGC 21 - Publication in refereed journal

SN - 0167-577X

VL - 281

JO - Materials Letters

JF - Materials Letters

M1 - 128655

ER -

Quasi-work-hardening at sites of shear band interactions in a Cu₅₀Zr₅₀ metallic glass

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GRF: Nano-mechanical Properties and Dislocation Interactions of Nanoscale Cu Particles in High Strength Fe-based Alloys

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Quasi-work-hardening at sites of shear band interactions in a Cu50Zr50 metallic glass

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Research Keywords

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GRF: Nano-mechanical Properties and Dislocation Interactions of Nanoscale Cu Particles in High Strength Fe-based Alloys

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Quasi-work-hardening at sites of shear band interactions in a Cu₅₀Zr₅₀ metallic glass