Multiscale modelling of nanoindentation test in nickel crystal

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Authors	HORNÍKOVÁ Jana BURŠÍKOVÁ Vilma ŠANDERA Pavel ČERNÝ Miroslav POKLUDA Jaroslav
Year of publication	2007
Type	Article in Periodical
Magazine / Source	Acta Metallurgica Slovaca
MU Faculty or unit	Faculty of Science
Citation
Field	Solid matter physics and magnetism
Keywords	Nanoindentation; Ab inition calculation: Idela shear strength; Nickel crystal; FEM analysis
Description	The nanoindentation test in the dislocation free crystal of nickel is simulated by nonlinear elastic nonlinear elastic finite element analysis coupled with both ab inition calculations of the ideal shear strength and crystallographic considerations. The onset of microplasticity, associated with the pop-in effect identified in experimental nanoindentation tests (creations of first dislocations), is assumed to be related to the moment of achieving the value of the ideal shear strength for the nickel crystal. The calculated value of the related indentation load lies within the range of experimentally observed pop-ins in the nickel crystal.
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