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Please use this identifier to cite or link to this item: http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/12243
Title: On the characteristic length scales associated with plastic deformation in metallic glasses
Authors: Murali, Palla
Keywords: Mechanical Engineering
Metallic Glasses
Issue Date: May-2012
Publisher: AIP
Abstract: Atomistic simulations revealed that the spatial correlations of plastic displacements in three metallic glasses, FeP, MgAl, and CuZr, follow an exponential law with a characteristic length scale ℓc that governs Poisson’s ratio ν⁠, shear band thickness tSB⁠, and fracture mode in these materials. Among the three glasses, FeP exhibits smallest ℓc⁠, thinnest tSB⁠, lowest ν⁠, and brittle fracture; CuZr exhibits largest ℓc⁠, thickest tSB⁠, highest ν⁠, and ductile fracture, while properties of MgAl lie in between those of FeP and CuZr. These findings corroborate well with existing experimental observations and suggest ℓc as a fundamental measure of the shear transformation zone size in metallic glasses.
URI: https://pubs.aip.org/aip/apl/article/100/20/201901/25419
http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/12243
Appears in Collections:Department of Mechanical engineering

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