Structural and temperature variations during rolling of aluminium slabs

Abstract

A finite-difference technique has been developed to predict the temperature profile during the rolling of aluminium slabs and experimental results are presented which show substantial agreement with the theory. It is shown that such variations affect the mechanisms determining the development of structure and that structural variations exist throughout the slabs on exit from the roll gap. Qualitatively, these variations agree with predicted variations in temperature-compensated strain rate. The effect of Mg as an alloying element is to reduce the possibility of formation of equiaxed subgrains resulting in an elongated substructure.