Estimate of the damage sustained by metal operating at elevated temperatures under stress

Conclusion Examination of the dislocation structure makes it possible to expose in a timely fashion the outset of the accelerated stage of creep in a metal that has been in service for a prolonged period — the formation of recrystallized volumes in the metal. Steam pipes with this structure should be replaced.Sverdlovénergoremont. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 60–61, October, 1985.