Microstructural behaviour of hot deformed AA 6015 alloy
by E . Evangelista, A. Forcellese, F . Gabrielli, P. Mengucci
International Journal of Materials and Product Technology (IJMPT), Vol. 5, No. 1, 1990

Abstract: The hot workability of AA 6015 alloy has been studied by means of torsion tests over the temperature range 300-500°C and strain rate of 0.1 s⁻¹. The ductility was very low at 300-350°C but attained large values at higher temperatures. Optical microscopy showed original grains partially elongated up to 350°C and recrystallized grains at higher temperatures. Electron metallography revealed a distribution of fine Mg₂Si precipitates with unrecovered structures at lower temperatures and well defined subgrain with the presence of large Mg₂Si particles at temperatures higher than 400°C. The effect of precipitate size on dynamic restoration was analysed.

Online publication date: Fri, 05-Nov-2010

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