The improvement of strength and ductility in ultra-fine grained 5052 Al alloy by cryogenic- and warm-rolling |
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Authors: | U G Kang J C Lee S W Jeong W J Nam |
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Affiliation: | (1) School of Advanced Material Engineering, Kookmin University, 861-1 Jeongneung-Dong, Songbuk-Ku, Seoul, 136-702, Republic of Korea; |
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Abstract: | The effects of deformation temperatures and post-deformation annealing on mechanical properties, in conjunction with microstructural
evolution in the 5052 Al alloy, were investigated. The combination of cryogenic-rolling with warm-rolling effectively increased
tensile strength and yield strength without the decrease of ductility through the formation of ultra-fine grains with dynamic
recovery in the 5052 Al alloy. And static annealing, as a post-heat treatment, enhanced the ductility. Therefore, ultra-fine
grained 5052 Al alloy with high strength and a moderate level of ductility could be made by the combination of cryogenic-rolling
with warm-rolling and the additional static annealing process. |
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Keywords: | |
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