An EBSD study on microstructure and texture development in graphene-reinforced Al–Mg–Si nanocomposites via FSP
This study investigates the microstructure evolution and texture development of friction stir processed (FSP) AA6061-T6 Al–Mg–Si matrix composites reinforced with graphene nanoplatelets. Using electron backscatter diffraction (EBSD), we studied changes in grain boundary characteristics and texture c...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029934 |
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| author | Hesam Pouraliakbar Mohammad Reza Jandaghi Hamed Jamshidi Aval Sang Hun Shim Johan Moverare Yong-Sang Na Gholamreza Khalaj Vahid Fallah |
| author_facet | Hesam Pouraliakbar Mohammad Reza Jandaghi Hamed Jamshidi Aval Sang Hun Shim Johan Moverare Yong-Sang Na Gholamreza Khalaj Vahid Fallah |
| author_sort | Hesam Pouraliakbar |
| collection | DOAJ |
| description | This study investigates the microstructure evolution and texture development of friction stir processed (FSP) AA6061-T6 Al–Mg–Si matrix composites reinforced with graphene nanoplatelets. Using electron backscatter diffraction (EBSD), we studied changes in grain boundary characteristics and texture components. As heat input increases, the Zener-Hollomon parameter decreases, causing grain size to grow. Particles, including those of Fe-rich and Mg2Si nature, also coarsen from average sizes of 0.9–1.4 μm, and 0.2–0.5 μm, respectively. Higher heat input and plastic strain lead to a reduction of the fraction of low-Σ boundaries, while increasing high-Σ boundaries suggest activation of other deformation mechanisms, i.e., from dislocation slip to twinning, respectively, as a function of dislocation generation and recovery kinetics. Grain orientation spread (GOS) and kernel average misorientation (KAM) values also decrease, indicating a higher homogeneity and smaller local disorientations under the excess heat. The higher texture indices observed in the composite samples suggest that frictional heat and graphene addition collectively enhance preferred orientations, potentially leading to higher anisotropy. Principal texture components shift from {101}<1‾2‾1>, {1‾2‾3}<634>, {111}<11‾0>, {332}<1‾1‾3>, {013}<23‾1>, and {214}<1‾2‾1> in the base metal to {011}<12‾2>, {011}<01‾1>, and {112}<11‾0> in composites. Components such as {101}<01‾0> remains unaffected. |
| format | Article |
| id | doaj-art-9404ebfbd30344b6a66f9848a054509e |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-9404ebfbd30344b6a66f9848a054509e2025-01-16T04:28:46ZengElsevierJournal of Materials Research and Technology2238-78542025-03-0135685701An EBSD study on microstructure and texture development in graphene-reinforced Al–Mg–Si nanocomposites via FSPHesam Pouraliakbar0Mohammad Reza Jandaghi1Hamed Jamshidi Aval2Sang Hun Shim3Johan Moverare4Yong-Sang Na5Gholamreza Khalaj6Vahid Fallah7Azar Advanced Manufacturing Laboratory (AAML), Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON, K7L 3N6, CanadaDivision of Engineering Materials, Department of Management and Engineering, Linköping University, Linköping, SE-58183, SwedenDepartment of Materials Engineering, Babol Noshirvani University of Technology, Shariati Avenue, Babol, 47148-71167, IranExtreme Materials Research Institute, Korea Institute of Materials Science (KIMS), Changwon, Republic of KoreaDivision of Engineering Materials, Department of Management and Engineering, Linköping University, Linköping, SE-58183, SwedenExtreme Materials Research Institute, Korea Institute of Materials Science (KIMS), Changwon, Republic of KoreaDepartment of Engineering, Savah Branch, Islamic Azad University, Saveh, IranAzar Advanced Manufacturing Laboratory (AAML), Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON, K7L 3N6, CanadaThis study investigates the microstructure evolution and texture development of friction stir processed (FSP) AA6061-T6 Al–Mg–Si matrix composites reinforced with graphene nanoplatelets. Using electron backscatter diffraction (EBSD), we studied changes in grain boundary characteristics and texture components. As heat input increases, the Zener-Hollomon parameter decreases, causing grain size to grow. Particles, including those of Fe-rich and Mg2Si nature, also coarsen from average sizes of 0.9–1.4 μm, and 0.2–0.5 μm, respectively. Higher heat input and plastic strain lead to a reduction of the fraction of low-Σ boundaries, while increasing high-Σ boundaries suggest activation of other deformation mechanisms, i.e., from dislocation slip to twinning, respectively, as a function of dislocation generation and recovery kinetics. Grain orientation spread (GOS) and kernel average misorientation (KAM) values also decrease, indicating a higher homogeneity and smaller local disorientations under the excess heat. The higher texture indices observed in the composite samples suggest that frictional heat and graphene addition collectively enhance preferred orientations, potentially leading to higher anisotropy. Principal texture components shift from {101}<1‾2‾1>, {1‾2‾3}<634>, {111}<11‾0>, {332}<1‾1‾3>, {013}<23‾1>, and {214}<1‾2‾1> in the base metal to {011}<12‾2>, {011}<01‾1>, and {112}<11‾0> in composites. Components such as {101}<01‾0> remains unaffected.http://www.sciencedirect.com/science/article/pii/S2238785424029934Friction stir processing (FSP)Aluminum matrix composite (AMC)GrapheneElectron backscatter diffraction (EBSD)MicrostructureGrain boundary |
| spellingShingle | Hesam Pouraliakbar Mohammad Reza Jandaghi Hamed Jamshidi Aval Sang Hun Shim Johan Moverare Yong-Sang Na Gholamreza Khalaj Vahid Fallah An EBSD study on microstructure and texture development in graphene-reinforced Al–Mg–Si nanocomposites via FSP Journal of Materials Research and Technology Friction stir processing (FSP) Aluminum matrix composite (AMC) Graphene Electron backscatter diffraction (EBSD) Microstructure Grain boundary |
| title | An EBSD study on microstructure and texture development in graphene-reinforced Al–Mg–Si nanocomposites via FSP |
| title_full | An EBSD study on microstructure and texture development in graphene-reinforced Al–Mg–Si nanocomposites via FSP |
| title_fullStr | An EBSD study on microstructure and texture development in graphene-reinforced Al–Mg–Si nanocomposites via FSP |
| title_full_unstemmed | An EBSD study on microstructure and texture development in graphene-reinforced Al–Mg–Si nanocomposites via FSP |
| title_short | An EBSD study on microstructure and texture development in graphene-reinforced Al–Mg–Si nanocomposites via FSP |
| title_sort | ebsd study on microstructure and texture development in graphene reinforced al mg si nanocomposites via fsp |
| topic | Friction stir processing (FSP) Aluminum matrix composite (AMC) Graphene Electron backscatter diffraction (EBSD) Microstructure Grain boundary |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029934 |
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