Because the 5000-series aluminum alloys are not heat treatable, controlling their microstructures during de-formation processing to achieve fine grain sizes is par-ticularly important. Recrystallization during or imme-diately following hot deformation provides an opportu-nity for controlling grain size prior to cold deformation. The present study investigates the effects of magnesium concentration, temperature, and deformation rate on re-crystallization during and immediately after hot upset-ting. Three aluminum alloys with magnesium concen-trations of 0.0, 0.5, and 4.5 wt.% were upset at 400 and 500°C at fixed strain rates of 0.1, 1.0, and 10.0 s-1. The specimens were rapidly quenched after upsetting to pre-serve their microstructures. Portions of the specimens were then annealed for 10 min. to allow static recrystal-lization. Cross-polarized optical microscopy was used to examine the as quenched and annealed specimens. These results are interpreted to explain microstructural evolution during and after hot deformation.
CITATION STYLE
Rupp, R. E., Weldon, A. J., Watt, T. J., Perez-Bustamante, R., Takata, K., & Taleff, E. M. (2016). Recrystallization in Al-Mg Alloys after Hot Compression. In Light Metals 2016 (pp. 163–167). wiley. https://doi.org/10.1002/9781119274780.ch28
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