Phase Transformations and Recrystallization in Cold-Rolled Al–Mn, Al–Sc–Zr and Al–Mn–Sc–Zr Alloy

• DOI: 10.4028/www.scientific.net/ddf.354.93
• Publication Date: 2014-06-25T12:46:38Z
• Authors: Martin Vlach; Ivana Stulíková; Bohumil Smola; Hana Kudrnova; Tomáš Kekule; Jaroslav Malek; Vladivoj Ocenasek
• Keywords: Recrystallization (geology); Isothermal process

The effect of cold-rolling on mechanical and electrical properties, microstructure recrystallization behaviour the AlMn, AlScZr AlMnScZr alloys was studied. materials were investigated during isothermal annealing at 300, 400, 500 550°C step-by-step quasilinear from 200°C up to 600°C with a heating rate 100 K/h followed by subsequent 600°C/5 h. Precipitation reactions studied resistometry (micro) hardness measurements. development electron microscopy backscatter diffraction examinations. hardening is due uniformly distributed Al 3 Sc and/or (Sc,Zr) particles. distinct changes in resistivity above ∼ 300°C are mainly caused precipitation Mn-containing It has negligible hardness. Phase transformations AlMn highly enhanced cold rolling. dependent deformation degree – more intensive combination Mn, Zr additions substantially suppresses 550°C. A partial observed alloy after 550°C/60 min 550°C/760 min, respectively. decomposition sequence supersaturated solid solution compatible system accompanied formation