Residual stress distribution of a 6061-T6 aluminum alloy under shear deformation
There is a lack of information with regards to the friction effect in ECAPed aluminum alloys, even though it might substantially modify the deformation at the surface. In this work, the friction effect at the surface and the deformation heterogeneity in the ECAPed aluminum alloy 6061-T6 were charact...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/89775 |
| Acceso en línea: | https://hdl.handle.net/2117/89775 https://dx.doi.org/10.1016/j.msea.2016.06.016 |
| Access Level: | acceso abierto |
| Palabra clave: | Aluminum alloys X-ray diffractometer Synchrotrons Synchrotron X-ray diffraction Equal channel angular processing Residual stresses X-ray-diffraction mechanical-properties grain-refinement ecap evolution microstructure texture homogeneity parameters detector Raigs X -- Difracció Alumini -- Aliatges Sincrotrons Àrees temàtiques de la UPC::Enginyeria dels materials |
| Sumario: | There is a lack of information with regards to the friction effect in ECAPed aluminum alloys, even though it might substantially modify the deformation at the surface. In this work, the friction effect at the surface and the deformation heterogeneity in the ECAPed aluminum alloy 6061-T6 were characterized. X-Ray diffraction was used to determine residual stresses (RS) on the sample surface. The volumetric sections were characterized by Synchrotron diffraction at ESRF beamline ID15B (Grenoble, France). It was found that the microhardness mapping and residual stress results showed a good agreement with the finite element analysis for the first layer studied. Minor strain variation, Delta d/d as a function of (hkl) planes, for the different analyzed sections was found. The study also showed that there was an incomplete symmetry in the residual stress near the surface, even at up to a depth of 400 gm. The regions with higher deformation were found to be at the top and bottom parts of the sample, while the central region showed stress variations of up to 50 MPa. (C) 2016 Elsevier B.V. All rights reserved. |
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