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Effect of elastic anisotropy on strain relief and residual stress determination in cubic systems by FIB-DIC experiments

Krottenthaler, M. and Benker, L. and Mughal, M. Z. and Sebastiani, M. and Durst, K. and Göken, M. (2016):
Effect of elastic anisotropy on strain relief and residual stress determination in cubic systems by FIB-DIC experiments.
In: Materials & Design, Elsevier Science Ltd., Oxford, England, pp. 505-511, 112, ISSN 02641275,
DOI: 10.1016/j.matdes.2016.09.046,
[Online-Edition: https://doi.org/10.1016/j.matdes.2016.09.046],
[Article]

Abstract

Focused Ion Beam milling and Digital Image Correlation analysis (FIB-DIC) method has been shown to offer an effective measure of residual stresses in coatings and bulk materials. In the present work the effect of elastic anisotropy on the residual stress interpretation from FIB-DIC measurements is studied for single crystals with cubic symmetry. Crystal orientation-dependent, elastically anisotropic 3D finite element models of the double slot milling geometry were developed and verified against FIB-DIC measurements performed on in situ four point bent samples of nanocrystalline nickel and single crystal CMSX-6 alloy. A discussion is presented of the limitations of the simplified assumptions vs full anisotropic modelling. (C) 2016 Elsevier Ltd. All rights reserved.

Item Type: Article
Erschienen: 2016
Creators: Krottenthaler, M. and Benker, L. and Mughal, M. Z. and Sebastiani, M. and Durst, K. and Göken, M.
Title: Effect of elastic anisotropy on strain relief and residual stress determination in cubic systems by FIB-DIC experiments
Language: English
Abstract:

Focused Ion Beam milling and Digital Image Correlation analysis (FIB-DIC) method has been shown to offer an effective measure of residual stresses in coatings and bulk materials. In the present work the effect of elastic anisotropy on the residual stress interpretation from FIB-DIC measurements is studied for single crystals with cubic symmetry. Crystal orientation-dependent, elastically anisotropic 3D finite element models of the double slot milling geometry were developed and verified against FIB-DIC measurements performed on in situ four point bent samples of nanocrystalline nickel and single crystal CMSX-6 alloy. A discussion is presented of the limitations of the simplified assumptions vs full anisotropic modelling. (C) 2016 Elsevier Ltd. All rights reserved.

Journal or Publication Title: Materials & Design
Volume: 112
Publisher: Elsevier Science Ltd., Oxford, England
Uncontrolled Keywords: Focused ion beam milling assisted digital image correlation, Residual stress, Elastic anisotropy, Finite element modelling, Four point bending
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
Date Deposited: 27 Nov 2017 11:53
DOI: 10.1016/j.matdes.2016.09.046
Official URL: https://doi.org/10.1016/j.matdes.2016.09.046
Funders: The authors gratefully acknowledge the funding of the European Union, within the large collaborative project ISTRESS, Grant Agreement n. 604646., M.G. and M.K. also gratefully acknowledge the funding of the German Research Council, within the framework of its "Excellence Initiative", supports the cluster of excellence "Engineering of Advanced Materials" at the F-A-Universitat Erlangen-Nürnberg.
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