STRAIN PATH EFFECT ON IGSCC INITIATION AND OXIDATION OF ALLOY 182 EXPOSED TO PWR PRIMARY WATER

摘要

A detailed understanding of strain path effect on IGSCC and oxidation is of great importance for the prediction of the initiation of IGSCC of Ni base alloys 600, 182 and 690 exposed to the primary water of PWRs. In this study, a cross specimen was used in order to quantify the effect of a change of strain path on the strain localization and to increase the understanding of the contribution of the strain hardening and the strain localization at the grain boundaries on the precursors for initiation of SCC. Oxides were characterized using TEM and correlated with the local deformation.