EBSD characterization of repetitive grain refinement in AZ31 magnesium alloy
A polycrystalline Mg–3Al–1Zn was subjected to high plastic strains by applying accumulative back extrusion (ABE) process. Electron back scatter diffraction analyses were used to explore the grain refinement mechanisms. A novel grain refinement trend was found at large strains, where new recrystalliz...
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| Veröffentlicht in: | Materials chemistry and physics 2015-01, Vol.149-150, p.339-343 |
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| container_title | Materials chemistry and physics |
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| creator | Fatemi-Varzaneh, S.M. Zarei-Hanzaki, A. Cabrera, J.M. Calvillo, P.R. |
| description | A polycrystalline Mg–3Al–1Zn was subjected to high plastic strains by applying accumulative back extrusion (ABE) process. Electron back scatter diffraction analyses were used to explore the grain refinement mechanisms. A novel grain refinement trend was found at large strains, where new recrystallized grains were repetitively refined through dynamic recrystallization. The grain size was diminishing continuously up to the fourth ABE pass, after which no further grain refinement was noticed upon successive passes.
•Boundaries and sub-boundaries evolutions were characterized.•Discontinuous recrystallization was operative at initial stages of deformation.•A novel repetitive grain refinement trend was realized. |
| doi_str_mv | 10.1016/j.matchemphys.2014.10.026 |
| format | Article |
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| ispartof | Materials chemistry and physics, 2015-01, Vol.149-150, p.339-343 |
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| source | ScienceDirect Journals (5 years ago - present); Recercat |
| subjects | Aliatges Aluminium Continuous Dynamic Recrystallitation Deformation Electron diffraction Enginyeria dels materials Magnesi Magnesium alloys Mechanical-Properties MG Alloy Microstructural Evolution Microstructure Recrystallization Severe Plastic-Deformation Size ZK60 Àrees temàtiques de la UPC |
| title | EBSD characterization of repetitive grain refinement in AZ31 magnesium alloy |
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