In the case of very high degrees of deformation with heavily work-hardened alloys, softening can also occur at room temperature. In a long-term study over 50 years, a decrease in strength could be measured by the end. The decrease is greater the higher the degree of deformation and the higher the alloy content. The softening itself is very pronounced at the beginning and quickly subsides. The effect can be avoided by stabilization annealing at around 120 °C to 170 °C for several hours.Ostermann: Anwendungstechnologie Aluminium, S. 109 f.
