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  Orientation dependence of nanoindentation pile-up patterns and of nanoindentation microtextures in copper single crystals

Wang, Y., Raabe, D., Klüber, C., & Roters, F. (2004). Orientation dependence of nanoindentation pile-up patterns and of nanoindentation microtextures in copper single crystals. Acta Materialia, 52(8), 2229-2238. doi:10.1016/j.actamat.2004.01.016.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-654B-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-9D7F-D
Genre: Journal Article

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nanoindent.pdf (Supplementary material), 675KB
 
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2004
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Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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 Creators:
Wang, Yanwen1, Author              
Raabe, Dierk2, Author              
Klüber, Christian1, Author              
Roters, Franz1, Author              
Affiliations:
1Theory and Simulation, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863392              
2Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              

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Free keywords: Texture; Nanoindentation; Plastic deformation; Copper; Single crystal; Pile-up
 Abstract: We present a study about the dependence of nanoindentation pile-up patterns and of microtextures on the rystallographic orientation using high purity copper single crystals. Experiments were conducted on a Hysitron nanoindentation setup using a conical indenter in order to avoid symmetries others than those of the crystal structure. Orientation measurements were conducted using a high resolution electron back-scatter diffraction technique for the automated acquisition of texture mappings around the indents. Simulations were carried out by means of a 3D elastic–viscoplastic crystal plasticity finite element method which takes full account of crystallographic slip and orientation changes during indentation. The experiments as well as the simulations show that the pile-up patterns on the surfaces of (0 0 1)-, (0 1 1)- and (1 1 1)-oriented single crystals have four-, two-, and sixfold symmetry, respectively. The different pile-up patterns can be explained in terms of the strong crystallographic anisotropy of the out-of-plane displacements around the indents. Pronounced accumulation of material entailing characteristic pile-up patterns occurs along the intersection vectors between the primary crystallographic slip planes and the indented surface planes.

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Language(s): eng - English
 Dates: 2004-05-03
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 123704
DOI: 10.1016/j.actamat.2004.01.016
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Title: Acta Materialia
  Alternative Title : Acta Mater.
Source Genre: Journal
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Pages: - Volume / Issue: 52 (8) Sequence Number: - Start / End Page: 2229 - 2238 Identifier: -