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

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 simulatio...

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Bibliographic Details
Published inScientific reports Vol. 5; no. 1; p. 15072
Main Authors Liu, Mao, Lu, Cheng, Tieu, Kiet Anh, Peng, Ching-Tun, Kong, Charlie
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 14.10.2015
Nature Publishing Group
Subjects
119/118
639/166/988
639/301/1034/1037
Aluminum
Deformation
Finite element method
Humanities and Social Sciences
Mechanical properties
multidisciplinary
Plasticity
Science
Strain hardening
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Summary: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.
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ISSN:2045-2322
2045-2322
DOI:10.1038/srep15072