Using molecular dynamics simulations, we study the generation of plasticity during cutting of a CuZr metallic glass. We characterize the deformation occurring at different cutting depths and velocities. A regular pattern of parallel shear bands forms in the chip in agreement with experimental work. The shear bands are better defined and further spaced apart for deeper cuts. For small cutting velocities , a sharp boundary plane separates the plastically deformed material in the chip from the virgin workpiece. This is the case even for the deepest cuts performed. The chip is of roughly prismatic shape; its thickness is determined by how fast the shear bands formed within the chip propagate. We find that at the core of a shear band, the number of full icosahedral clusters decreases by more than 50%. At higher cut velocities, we find bent shear bands and irregular shear-band patterns when shear bands merge.
Skip Nav Destination
Article navigation
21 March 2020
Research Article|
March 16 2020
An atomistic study of shear-band formation during cutting of metallic glasses
Karina E. Avila;
Karina E. Avila
1
Physics Department, University Kaiserslautern
, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
2
Research Center OPTIMAS, University Kaiserslautern
, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
Search for other works by this author on:
Stefan Küchemann;
Stefan Küchemann
1
Physics Department, University Kaiserslautern
, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
Search for other works by this author on:
Iyad Alabd Alhafez;
Iyad Alabd Alhafez
1
Physics Department, University Kaiserslautern
, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
2
Research Center OPTIMAS, University Kaiserslautern
, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
Search for other works by this author on:
Herbert M. Urbassek
Herbert M. Urbassek
a)
1
Physics Department, University Kaiserslautern
, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
2
Research Center OPTIMAS, University Kaiserslautern
, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
Search for other works by this author on:
a)
Author to whom correspondence should be addressed: [email protected]. URL: http://www.physik.uni-kl.de/urbassek/
J. Appl. Phys. 127, 115101 (2020)
Article history
Received:
December 04 2019
Accepted:
February 29 2020
Citation
Karina E. Avila, Stefan Küchemann, Iyad Alabd Alhafez, Herbert M. Urbassek; An atomistic study of shear-band formation during cutting of metallic glasses. J. Appl. Phys. 21 March 2020; 127 (11): 115101. https://doi.org/10.1063/1.5141336
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
A step-by-step guide to perform x-ray photoelectron spectroscopy
Grzegorz Greczynski, Lars Hultman
Piezoelectric thin films and their applications in MEMS: A review
Jinpeng Liu, Hua Tan, et al.
Tutorial: Simulating modern magnetic material systems in mumax3
Jonas J. Joos, Pedram Bassirian, et al.
Related Content
On the notch sensitivity of CuZr metallic glasses
Appl. Phys. Lett. (August 2013)
Influence of composition on the mechanical properties of metallic nanoglasses: Insights from molecular dynamics simulation
J. Appl. Phys. (October 2020)
On the characteristic length scales associated with plastic deformation in metallic glasses
Appl. Phys. Lett. (May 2012)
Mechanisms of metastable states in CuZr systems with glass-like structures
J. Chem. Phys. (September 2015)
Mechanical properties and scaling laws of polycrystalline CuZr shape memory alloy
J. Appl. Phys. (October 2021)