Abstract
The mechanical properties, corrosion resistance and microstructure of an Al-Cu-Mg alloy subjected to cryorolling, warm rolling and short-time aging were investigated. The alloy underwent cryorolling and warm rolling exhibited higher hardness than the cryorolled alloy before and after aging. Microstructural results revealed that precipitation was promoted in the warm rolled alloy. After appropriate aging, the warm rolled alloy showed significant enhancement of strength and corrosion resistance with good ductility in comparison with the peak-aged alloy. The improved properties of the warm rolled alloy after aging was mainly attributed to more homogeneous distribution of nanosized precipitates in the grain interior and the absence of continuous grain boundary precipitates.
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