SIM-14 MOLECULAR DYNAMICS STUDY ON NANOINDENTATION OF SINGLE-CRYSTALLINE ALUMINA THIN FILM(Simulations of Micro/Nano Scale Phenomena IV,Technical Program of Oral Presentations)
Research Institute for Computational Sciences, National Institute of Advanced Industrial Science and Technology
Aiichiro NAKANO
Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Chemical Engineering & Materials Science, Department of Computer Science, University of Southern Californian
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Published: June 17, 2009Received : -Released : June 19, 2017Accepted : -
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Atomistic mechanisms of the initial stage of plasticity during nanoindentation are studied by molecular dynamics simulations for three surface orientations of alumina (Al_2O_3) crystal. The simulations predict significant anisotropy and indentation-depth dependence of the hardness value at the nanometer scale. The nanohardness anisotropy is found to arise from orientation dependent dislocation activities.
