Dynamic recrystallization during hot torsion of Al-4Mg alloy

Junpin Lin; Yanli Wang; Zhi Lin; Guoliang Chen

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Junpin Lin, Yanli Wang, Zhi Lin, and Guoliang Chen, Dynamic recrystallization during hot torsion of Al-4Mg alloy, J. Univ. Sci. Technol. Beijing , 10(2003), No. 2, pp.45-48.

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Dynamic recrystallization during hot torsion of Al-4Mg alloy

摘要: Binary Al-4Mg alloy have been deformed by hot torsion at 300-500℃ and strain rates of 0,006-1.587 s^-1 to a true strain of 5.5. The specimens were annealed in vacuum for 1.5 h at 500℃ and then water quenched. The study indicates that the dynamic recrystallization occurs during hot torsion of Al-4Mg alloy in a certain range of Z parameter (Zener-Hollmon Parameter), i.e. 19.3 ≤ lnZ ≤ 24.8. Increasing the strain rate at higher deformation temperature or reducing the strain rate at lower deformation temperature accelerates the occurrence of dynamic recrystallization in the alloy.

Dynamic recrystallization during hot torsion of Al-4Mg alloy

Abstract: Binary Al-4Mg alloy have been deformed by hot torsion at 300-500℃ and strain rates of 0,006-1.587 s^-1 to a true strain of 5.5. The specimens were annealed in vacuum for 1.5 h at 500℃ and then water quenched. The study indicates that the dynamic recrystallization occurs during hot torsion of Al-4Mg alloy in a certain range of Z parameter (Zener-Hollmon Parameter), i.e. 19.3 ≤ lnZ ≤ 24.8. Increasing the strain rate at higher deformation temperature or reducing the strain rate at lower deformation temperature accelerates the occurrence of dynamic recrystallization in the alloy.

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