A Comparison of the Effects of Pre-ECAR and Post-ECAR Aging on Microstructure and Strengthening in 7050 Al Alloy Sheet
- A Comparison of the Effects of Pre-ECAR and Post-ECAR Aging on Microstructure and Strengthening in 7050 Al Alloy Sheet
- equal channel angular rolling (ECAR); 7030 aluminum alloy; post-ECAR aging; pre-ECAR aging; hardness
- Issue Date
- Materials transactions
- VOL 51, NO 11, 2109-2112
- Effects of the post-ECAR aging treatment on the microstructural evolution and strengthening were compared with those of the pre-ECAR
aging for a wrought 7050 Al alloy sheet that was subjected to severe plastic deformation (SPD) through multiple equal channel angular rolling
(ECAR). The post-ECAR aging treatment led to the formation of a nanocrystalline structure with a grain size of ~100 nm through the
precipitation of fine MgZn2 particles during post-ECAR aging, which pinned the grain boundary motion, and more effectively strengthened the
7050 Al alloy than the pre-ECAR aging.
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