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Molecular Dynamics Study of Plastic Deformation of Nanocrystalline Palladium

In: High Performance Computing in Science and Engineering '09

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  • D. V. Bachurin

    (Universität Karlsruhe, Institut für Zuverlässigkeit von Bauteilen und Systemen (IZBS)
    Russian Academy of Science, Institute for Metals Superplasticity Problems (IMSP))

  • P. Gumbsch

Abstract

Atomistic simulations of tensile and compressive deformation of three-dimensional nanocrystalline palladium at room temperature and different strain rates were perfomed. Detailed analysis of tensile straining has revealed almost no plasticity and an absence of dislocation activity in the grains right up to the moment of intergranular cracking. During compressive straining the sample exhibits a plastic regime brought about by the motion of extended partial dislocations emitted from the grain boundaries. At higher compressive strains the deformation mechanism changes to one that involves full dislocations and twinning.

Suggested Citation

  • D. V. Bachurin & P. Gumbsch, 2010. "Molecular Dynamics Study of Plastic Deformation of Nanocrystalline Palladium," Springer Books, in: Wolfgang E. Nagel & Dietmar B. Kröner & Michael M. Resch (ed.), High Performance Computing in Science and Engineering '09, pages 111-122, Springer.
    • Handle: RePEc:spr:sprchp:978-3-642-04665-0_8
    DOI: 10.1007/978-3-642-04665-0_8
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