Published October 7, 2017
| Version v1
Journal article
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Grain boundary mediated plasticity: The role of grain boundary atomicstructure and thermal activation
- 1. SCK·CEN, Nuclear Materials Science Institute, Boeretang 200, B-2400 Mol, Belgium
- 2. Departament of Civil and Environmental Engineering, E.T.S. Enginyeria de Camins, Universitat Politècnica de Catalunya (UPC), BarcelonaTech, Jordi Girona 1-3, 08034 Barcelona, Spain
- 3. ANSYS Switzerland GmbH, Technoparkstrasse 1, CH-8005 Zürich, Switzerland
- 4. Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland
Description
The interaction of dislocation pile-ups with several tilt grain boundaries (GB) is studied in copper by using a hy-brid continuum-atomistic approach. The effects of temperature, pile-up intensity and GB structure on absorptionand transmission of slip as a function oflocalstressstate are explored.Byconsidering several high-angle GBswithdifferent misorientation angles, we demonstrate that GB atomic structure primarily defines its ability to accom-modate incoming pile-up dislocations, thus limiting the direct transmission of pile-ups through the interface.
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Additional details
Funding
- PRECOMET – Predictive Computational Metallurgy 339081
- European Commission
- M4F – MULTISCALE MODELLING FOR FUSION AND FISSION MATERIALS 755039
- European Commission
- EUROfusion – Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium 633053
- European Commission