A Microstructure Investigation of the Deformation and Recrystallization of Particle‐Containing Aluminium‐Silicon Alloys

Abstract

Single crystals and polycrystals of aluminium containing non‐deformable second‐phase particles of silicon, have been deformed, and the resultant structures investigated by microscopy and by X‐ray and microtexture techniques. The particle size is found to influence the scale of the deformation bands formed, and there is evidence that particles may affect the nucleation of these bands. The deformed materials were recrystallized, and the effect of particle stimulated nucleation on the weakening of the rolling texture is discussed with reference to a computer simulation. In contrast, the recrystallization texture of particle‐containing single crystals deformed on only two slip systems is sharp, and it is shown that the texture components are consistent with plasticity theory.