Deformation behavior of bulk and nanostructured metallic glasses studied via molecular dynamics simulations

Journal Article · Tue Mar 01 00:00:00 EST 2011 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.83.100202· OSTI ID:21538185

Sopu, D; Ritter, Y; Albe, K ^[1]; Gleiter, H ^[2]

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1. Institut fuer Materialwissenschaft, Technische Universitaet Darmstadt, Petersenstr. 32, D-64287 Darmstadt (Germany)
2. Institute of Nanotechnology, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe (Germany)

In this study, we characterize the mechanical properties of Cu{sub 64}Zr{sub 36} nanoglasses under tensile load by means of large-scale molecular dynamics simulations and compare the deformation behavior to the case of a homogeneous bulk glass. The simulations reveal that interfaces act as precursors for the formation of multiple shear bands. In contrast, a bulk metallic glass under uniaxial tension shows inhomogeneous plastic flow confined in one dominant shear band. The results suggest that controlling the microstructure of a nanoglass can pave the way for tuning the mechanical properties of glassy materials.

• OSTI ID: 21538185
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 83, Issue 10; Other Information: DOI: 10.1103/PhysRevB.83.100202; (c) 2011 American Institute of Physics; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINARY ALLOY SYSTEMS
COMPARATIVE EVALUATIONS
COPPER COMPOUNDS
DEFORMATION
GLASS
INTERFACES
MECHANICAL PROPERTIES
METALLIC GLASSES
MICROSTRUCTURE
MOLECULAR DYNAMICS METHOD
NANOSTRUCTURES
PLASTICS
PRECURSOR
SIMULATION
ZIRCONIUM COMPOUNDS
ALLOY SYSTEMS
CALCULATION METHODS
EVALUATION
MATERIALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
SYNTHETIC MATERIALS
TRANSITION ELEMENT COMPOUNDS