Einfluß einer Wärmenachbehandlung auf die mechanischen Eigenschaften und das Korrosionsverhalten nichtrostender Stähle

Influence of an ultimate heat treatment of the mechanical properties and the corrosion behaviour of stainless steels Unfavorable structures as may arise during steel processing and may impair their behaviour can be eliminated by an ultimate heat treatment. Cold hardening can be removed by heating to about 1000°C for about 1 min; dissolution of chromium carbide precipitated requires 3 min at 1030°C and dissolution of sigma phase about 10 min at 1050°C. The treatment, however, will not be successful, unless the temperatures mentioned are achieved throughout the whole workpiece and a sufficiently high colling rate is maintained after the treatment.