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On the Atomistic Simulation of Plastic Deformation and Fracture in Crystals

Published online by Cambridge University Press:  03 March 2011

Y-L. Shen
Y-L. Shen
Affiliation:
Department of Mechanical Engineering, University of New Mexico, Albuquerque, New Mexico 87131
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Abstract

Tensile stretching of a two-dimensional model crystal was computationally studied using molecular statics simulations. Attention was directed to the atomistics of defect activities throughout the deformation history. It is shown that the incorporation of an initial point defect is able to trigger dislocation slip in a repetitive and controlled manner. The initial defect is also seen to have potential bearing on the formation of voiding damage that leads to ductile fracture of the crystal. Implications to the nanoscale mechanical behavior and its modeling are discussed.

Keywords

Computer simulationDislocationsMechanical properties
Type
Rapid Communications
Information
Journal of Materials Research , Volume 19 , Issue 4 , April 2004 , pp. 973 - 976
Copyright
Copyright © Materials Research Society 2004

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