Mechanical heterogeneity and mechanism of plasticity in metallic glasses

Wang, J. G.; Zhao, D. Q.; Pan, M. X.; Shek, C. H.; Wang, W. H.
January 2009
Applied Physics Letters;1/19/2009, Vol. 94 Issue 3, pN.PAG
Academic Journal
The mechanical heterogeneity is quantified based on the spatial nanohardness distributions in three bulk metallic glasses with different plasticities. It is found that the metallic glass with high mechanical heterogeneity is more plastic. We propose that the appropriate mechanical heterogeneity makes the metallic glasses meliorate their plasticity by increasing inelastic strained area and promoting energy dissipation.


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