Abstract
An Al-4.5%Mg-0.2%Sc-0.09%Zr alloy was subjected to cold rolling (CR) with reductions ranging from 20 to 90%. Extensive strain hardening upon the cold rolling resulted in the significant increase in strength. After cold rolling with a total reduction of 20 and 90% the yield stress (YS) increase is 30 and 62%, respectively. These increments are attributed to an increase in the density of lattice dislocations, the formation of numerous low-angle boundaries (LAB), deformation bands and microbands within interiors of initial grains.
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