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A combined experimental-numerical approach for determining mechanical properties of aluminum subjects to nanoindentation.

ABSTRACT: A crystal plasticity finite element method (CPFEM) model has been developed to investigate the mechanical properties and micro-texture evolution of single-crystal aluminum induced by a sharp Berkovich indenter. The load-displacement curves, pile-up patterns and lattice rotation angles from simulation are consistent with the experimental results. The pile-up phenomenon and lattice rotation have been discussed based on the theory of crystal plasticity. In addition, a polycrystal tensile CPFEM model has been established to explore the relationship between indentation hardness and yield stress. The elastic constraint factor C is slightly larger than conventional value 3 due to the strain hardening.

PROVIDER: S-EPMC4604481 | BioStudies | 2015-01-01T00:00:00Z

REPOSITORIES: biostudies

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