Study on Ultra-fine Pure Aluminum Prepared by Accumulative Roll-bonding

The severe plastic deformation on 1060pure aluminum at room temperature was carried outby accumulative roll-bonding, the microstructure evolution and mechanics performance change of 1060 industry pure aluminum before and after plastic deformation were studied. The experimental results indicate that the layer interface binding is becoming tighter with rolling pass increasing , but the parent metal interpenetration appeares after five cycles. Both tensile strength and microhardness of the material enhance greatly and the elongation percentage decreases sharply at the first rolling pass, and then stable. The grain size is refined and the ultra-fine grains with a size of 400nm are obtained while the equivalent true strain is 6.4.