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Title: Material transport via the emission of shear loops during void growth: A molecular dynamics study

Abstract

The growth of a nanovoid in single-crystal copper has been studied via molecular dynamics (MD) method. The objective is to build the correlation between material transport pattern and dislocation structures. MD results are examined by characterizing the material transport via the “relative displacement” of atoms, where the homogenous elastic deformation has been excluded. Through this novel approach, we are able to illustrate the feasibility of void growth induced by shear loops/curves. At a smaller scale, the formation and emission of shear loops/curves contribute to the local mass transport. At a larger scale, a new mechanism of void growth via frustum-like dislocation structure is revealed. A phenomenological description of void growth via frustum-like dislocation structure is also proposed.

Authors:
;  [1]
  1. Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 1H9 (Canada)
Publication Date:
OSTI Identifier:
22596794
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 119; Journal Issue: 22; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMS; COPPER; CRYSTAL GROWTH; DEFORMATION; DIAGRAMS; DISLOCATIONS; ELASTICITY; EMISSION; MOLECULAR DYNAMICS METHOD; MONOCRYSTALS; NANOSTRUCTURES; TRANSPORT THEORY

Citation Formats

Cui, Yi, and Chen, Zengtao, E-mail: zengtao.chen@ualberta.ca. Material transport via the emission of shear loops during void growth: A molecular dynamics study. United States: N. p., 2016. Web. doi:10.1063/1.4953089.
Cui, Yi, & Chen, Zengtao, E-mail: zengtao.chen@ualberta.ca. Material transport via the emission of shear loops during void growth: A molecular dynamics study. United States. doi:10.1063/1.4953089.
Cui, Yi, and Chen, Zengtao, E-mail: zengtao.chen@ualberta.ca. Tue . "Material transport via the emission of shear loops during void growth: A molecular dynamics study". United States. doi:10.1063/1.4953089.
@article{osti_22596794,
title = {Material transport via the emission of shear loops during void growth: A molecular dynamics study},
author = {Cui, Yi and Chen, Zengtao, E-mail: zengtao.chen@ualberta.ca},
abstractNote = {The growth of a nanovoid in single-crystal copper has been studied via molecular dynamics (MD) method. The objective is to build the correlation between material transport pattern and dislocation structures. MD results are examined by characterizing the material transport via the “relative displacement” of atoms, where the homogenous elastic deformation has been excluded. Through this novel approach, we are able to illustrate the feasibility of void growth induced by shear loops/curves. At a smaller scale, the formation and emission of shear loops/curves contribute to the local mass transport. At a larger scale, a new mechanism of void growth via frustum-like dislocation structure is revealed. A phenomenological description of void growth via frustum-like dislocation structure is also proposed.},
doi = {10.1063/1.4953089},
journal = {Journal of Applied Physics},
number = 22,
volume = 119,
place = {United States},
year = {Tue Jun 14 00:00:00 EDT 2016},
month = {Tue Jun 14 00:00:00 EDT 2016}
}