Kinetics of recrystallization for twin-roll casting AZ31 magnesium alloy during homogenization |
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| Authors: | Hu Zhao Pei-jie Li Liang-ju He |
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| Affiliation: | (1) EPSRC Centre for Innovative Manufacturing in Liquid Metal Engineering and BCAST, Brunel University, Uxbridge, Middlesex, UB8 3PH, United Kingdom;(2) Corrosion and Protection Centre, School of Materials, University of Manchester, Manchester, M13 9PL, United Kingdom; |
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| Abstract: | The kinetics of recrystallization for twin-roll casting AZ31 magnesium alloy with different thicknesses during homogenization
was analyzed. It is shown that fine grains are first formed at the boundaries of deformed bands in the twin-roll casting slab.
The recrystallized grains with no strain are gradually substituted for the deformed microstructure of twin-roll casting AZ31
magnesium alloy. The incubation temperature and time for the recrystallization of a twin-roll casting AZ31 magnesium alloy
strip with a thickness of 3 mm are lower and shorter than those of the 6-mm thick strip, respectively. The 3-mm thick twin-roll
casting magnesium alloy has finer grains than the 6-mm thick strip. The activation energies of recrystallization for twin-roll
casting AZ31 magnesium alloy slabs with the thickness of 3 and 6 mm are 88 and 69 kJ/mol, respectively. The kinetics curves
of recrystallization for twin-roll casting AZ31 magnesium alloy were obtained. |
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