Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 149, Issue -, Pages 339-343Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2014.10.026
Keywords
Recrystallization; Microstructure; Deformation; Electron diffraction
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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. (C) 2014 Elsevier B.V. All rights reserved.
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