Abstract
This is to report on the experiments made for clarifying the influence of preheating temperature on recrystali ation of slab of high purity aluminium and several aluminium alloys.
In the case of high purity aluminium sheets (85% cold-rolled), the higher the pre-heating temperature, the higher the recrystallization one. The specimens pre-heated at 400°-450°C is softened most rapidly and shows bigger recrystallized grain size.
It is considered that the above-mentioned phenomenon are concerned with the change in the solubility of impurities contained.
