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A fully recrystallized ultrafine-grained (UFG) Fe22wt.%Mn0.6wt.%C twinning-induced plasticity (TWIP) steel with mean grain size of 576nm was fabricated by cold rolling and annealing process. Tensile test showed that this UFG steel possessed high yield strength of 785MPa, and unprecedented uniform elongation of 48%. The Hall-Petch relationship was verified from the coarse-grained (CG) regime to the...
Fully recrystallized Cu-4 at.%Al alloy and Cu-11 at.%Al alloy with grain sizes ranging from 0.5 μm to 80 μm were fabricated by cold rolling and annealing. Tensile tests showed that yield strength, ultimate tensile strength and uniform elongation of the two Cu–Al alloys had linear relationships with the inverse square root of the grain size, and both the tensile strength and uniform elongation were...
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