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HomeKey Engineering MaterialsKey Engineering Materials Vols. 306-308On the Size Effect in Hardness by Nanoindentation...

On the Size Effect in Hardness by Nanoindentation Method

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Abstract:

A model describing nanoindentation as plastic deformation resulting from a strain gradient is investigated. Using a simplified axisymmetric nanoindentation, the effective strain gradient for indentation depth is derived. The proposed indentation model is a modification of Nix and Gao’s model (1998) . To validate this approach for nanoindentation, solutions for depth-dependent hardness of single various materials such as Cu, Al, Ni are compared with experiments. Results show that the proposed model agrees well with the hardness experiments.

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Fracture and Strength of Solids VI

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Periodical:

Key Engineering Materials (Volumes 306-308)

Pages:

911-916

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.306-308.911

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Online since:

March 2006

Authors:

Hun Kee Lee, Seong Hyun Ko, Hyun Chul Park

Keywords:

Depth-Dependent Hardness, Nanoindentation, Size Effect, Strain Gradient Plasticity

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