Applicability of cutting theory to nanocutting of metallic glasses: Atomistic simulation

•Cutting of a CuZr metallic glass is studied by molecular dynamics simulation.•A wide range of rake angles of the cutting tool is realized.•Plasticity occurs via the formation of parallel shear bands in the chip.•Our results closely follow Merchant’s theory of cutting. Using molecular dynamics simul...

Full description

Saved in:
Bibliographic Details
Published in:Journal of non-crystalline solids 2020-12, Vol.550, p.120363, Article 120363
Main Authors: Avila, Karina E., Vardanyan, Vardan Hoviki, Alabd Alhafez, Iyad, Zimmermann, Marco, Kirsch, Benjamin, Urbassek, Herbert M.
Format: Article
Language:English
Subjects:
Cutting
Metallic glass
Molecular dynamics
Shear angle
Shear bands
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Cutting of a CuZr metallic glass is studied by molecular dynamics simulation.•A wide range of rake angles of the cutting tool is realized.•Plasticity occurs via the formation of parallel shear bands in the chip.•Our results closely follow Merchant’s theory of cutting. Using molecular dynamics simulation, we perform simulations of cutting a CuZr metallic glass at a wide range of rake angles. Plasticity in the metallic glass is governed by the formation of parallel shear bands in the chip. The chip is clearly separated from the uncut workpiece by a primary shear zone, from which the shear angle can be easily determined. The dependence of the shear angle on the rake angle and the friction angle follows closely Merchant’s theory of cutting. This agreement is particularly pronounced in the case that the force exerted on the workpiece is far from the cutting direction; this occurs for negative rake angles.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2020.120363