Title

Investigation of the anisotropic mechanical behaviors of copper single crystals through nanoindentation modeling

RIS ID

106872

Publication Details

Liu, M., Tieu, K. Anh., Zhou, K. & Peng, C. (2016). Investigation of the anisotropic mechanical behaviors of copper single crystals through nanoindentation modeling. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 47A 2717-2725.

Abstract

A crystal plasticity finite element method constitutive model was developed to investigate the anisotropic mechanical behaviors of (001), (011), and (111) initially orientated copper (Cu) single crystals during nanoindentation deformation. The numerical load-indentation depth curve and hardness-indentation depth curve were compared with experimental observations to validate the established three-dimensional (3D) CPFEM model. The difference of indentation loads between (111) crystal and (001) crystal is ~10.68 pct, and the difference of indentation modulus between (111) surface and (001) surface is ~10.80 pct. The numerical results show the noticeable indentation size effect for three crystals, and slightly different hardness values on different crystallographic planes. The equivalent plastic strain and lattice rotation angles were also analyzed on three through-thickness cross sections to study the plastic deformation-induced texture anisotropy.

Please refer to publisher version or contact your library.

Share

COinS
 

Link to publisher version (DOI)

http://dx.doi.org/10.1007/s11661-016-3439-1