Abstract
Constitutive equations for the calculation of stress and strain fields during cladding and post-weld tempering are presented. Theoretical and experimental investigations of residual stress and strain fields caused by cladding and tempering of reactor pressure vessels were performed. In particular, stress and strain fields in reactor pressure vessels of WWER-440 and WWER-1000 types, thick plates and model specimens were determined. An engineering procedure for the determination of residual stress and strain fields in reactor pressure vessels for various temperatures and durations of post-weld tempering is proposed.
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