EBSD Analysis of Orientation Gradients Developed near Grain Boundaries
| Autor: | Javier Signorelli, Raul Eduardo Bolmaro, Natalia Soledad de Vincentis, A. Roatta |
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| Rok vydání: | 2019 |
| Předmět: |
ORIENTATION GRADIENT
Mesoscopic physics Materials science Misorientation EBSD Mechanical Engineering Geometry Orientation gradient Condensed Matter Physics Microstructure Slip transmission PLASTIC DEFORMATION purl.org/becyt/ford/2 [https] Mechanics of Materials Ultimate tensile strength TA401-492 General Materials Science Grain boundary Deep drawing Dislocation Plastic deformation SLIP TRANSMISSION purl.org/becyt/ford/2.5 [https] Materials of engineering and construction. Mechanics of materials Electron backscatter diffraction |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET Materials Research, Volume: 22, Issue: 1, Article number: e20180412, Published: 10 JAN 2019 Materials Research v.22 n.1 2019 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Vol 22, Iss 1 (2019) |
| ISSN: | 1980-5373 1516-1439 |
| DOI: | 10.1590/1980-5373-mr-2018-0412 |
| Popis: | The local misorientation and orientation gradient development near grain boundaries (GBs) are analyzed in a deep drawing quality steel sheet (AKDQ) subjected to interrupted tensile tests in a notched sample. The microstructure is studied using electron backscatter diffraction (EBSD) with subgrain-level spatial resolution. The evolution of misorientation accumulation for particular GBs was traced in grains located in different zones inside the notch, identifying the effective area of influence of GBs inside the neighboring grains. A local study was performed, and the evolution in misorientation development near GB was investigated. The results show a low correlation between GB width and sharpness of the orientation gradient with the mesoscopic strain, but instead orientation gradients between GB zones and the interior of the grains were observed with increasing strain. The increase in severity observed in some GBs can be related to dislocation pile up development, which reduces the permeability of a boundary to dislocation transmission. Fil: de Vincentis, Natalia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina Fil: Roatta, Analía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina Fil: Bolmaro, Raul Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina Fil: Signorelli, Javier Walter. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina |
| Databáze: | OpenAIRE |
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