Data are presented from uniaxial tensile and biaxial bulge tests of AA 5182 sheet material at elevated temperatures. This active deformation mechanism influences both plastic flow and microstructure evolution across conditions of interest for hot- and warm-forming. The relatively high strain-rate sensitivity exhibited by these non-superplastic materials, when deforming under solute-drag creep, is a primary contributor to large tensile ductilities. Taleff, Eric M.ДЄluminum 5000-series alloy sheet materials exhibit substantial ductilities at hot and warm temperatures, even when grain size is not particularly fine.

Predicting Hot Deformation of AA 5182 Sheet Further, the deformation history of the ingot should be taken into account for accurate stress calculations.

It is concluded that both constitutive equations perform well, but the combined hardening-Sellars-Tegart (HST) equation has temperature-independent parameters, which makes it easier to implement in a DC casting model. To evaluate the quantified constitutive equations, tensile tests were performed simulating the deformation and cooling history experienced by the material during casting. In order to study the effect of recovery, the constitutive behavior after prestraining at higher temperatures was also investigated. The parameters of two constitutive equations, the extended Ludwik equation and a combination of the Sellars-Tegart equation with a hardening law, were determined. Therefore, the constitutive behavior of three aluminum alloys ( AA1050, AA3104, and AA 5182) was determined in the as-cast condition using tensile tests at low strain rates and from room temperature to solidus temperature. Recent thermomechanical modeling to calculate the stress field in industrially direct-chill (DC) cast-aluminum slabs has been successful, but lack of material data limits the accuracy of these calculations. Constitutive behavior of as-cast AA1050, AA3104, and AA 5182

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