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Atomistic Simulation of Voids Effect on Nanoindentation

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Abstract:

In this paper, spherical voids effect on the first dislocation emission of single-crystal Cu in nanoindentation is investigated by means of the atomistic simulation. The results show that there are two opposite effects on dislocation emission resulting from the stable voids in matrix. The existence of voids can lower or heighten the load needed to nucleate the first dislocation. The relative distance between the void and the indenter, and the void size play an important role in the yield load of the first dislocation emission in nanoindentation.

Keywords: ATOMISTIC SIMULATION; DISLOCATION; NANOINDENTATION; VOID

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2009.C127

Publication date: February 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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