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

Authors

Mao Liu, University of WollongongFollow
Cheng Lu, University of WollongongFollow
A Kiet Tieu, University of WollongongFollow
Ching-Tun PengFollow
Charlie Kong, University of New South Wales

RIS ID

103679

Publication Details

Liu, M., Lu, C., Tieu, K. Anh., Peng, C. & Kong, C. (2015). A combined experimental-numerical approach for determining mechanical properties of aluminum subjects to nanoindentation. Scientific Reports, 5 15072-1-15072-16.

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.