Mechanical and Materials Engineering, Department of
Department of Mechanical and Materials Engineering: Faculty Publications
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Document Type
Article
Date of this Version
2020
Citation
Yin Du , Qing Zhou , Qian Jia , Yidi Shi , Haifeng Wang & Jian Wang (2020) Imparities of shear avalanches dynamic evolution in a metallic glass, Materials Research Letters, 8:10, 357-363, DOI: 10.1080/21663831.2020.1771450
Abstract
The imparities of shear avalanches dynamic evolution under nanoindentation originating from the soft regions and the stiff matrix were explored in a metallic glass by statistical and dynamic analysis. Upon the continuous indentation process, the dynamic state of the stiff matrix exhibits a transition from a chaotic behavior to a self-organized critical (SOC) behavior, whereas the soft regions are domi-nated by the SOC behavior throughout the indentation process. The mechanism was clarified by the evolution of the cut-off size of shear avalanches. These findings might advance our fundamental understanding of inhomogeneous deformation on microscale.
IMPACT STATEMENT The shear avalanches dynamic evolution controlled by the atomic-scale rearrangement mechanism in metallic glasses strongly relies on the structural state and the history of deformation.
Included in
Mechanics of Materials Commons, Nanoscience and Nanotechnology Commons, Other Engineering Science and Materials Commons, Other Mechanical Engineering Commons
Comments
© 2020 The Author(s).