Dynamic Recovery and Recrystallization in an Iron-Containing Aluminium Bronze

Abstract

The effect of three different rolling temperatures on dynamic recovery and recrystallization in an iron-containing copper-aluminium alloy has been evaluated. Rolling at about 980°C in the β phase field results in dynamic recrystallization and fine-grained material is obtained. Iron particles precipitated during rolling inhibit grain growth. By rolling the material at 800 and 650°C, where the structure consists of (α+β) phases, elongated fibrous crystals are obtained. The dynamic recovery at these temperatures is so remarkable that subsequent high temperature annealing does not induce any recrystallization, but annealing for longer periods of time results first in some ‘perfection’ of the sub-structure and later also of the grains, and the fibrous structure disappears.