Intergranular Stress Corrosion Crack Initiation and Temperature Dependence of Alloy 600 in Pressurized Water Reactor Primary Water

July 21, 2023

Conference Paper

Intergranular Stress Corrosion Crack Initiation and Temperature Dependence of Alloy 600 in Pressurized Water Reactor Primary Water

Abstract

Stress corrosion crack (SCC) initiation of a solution annealed, cold-worked (CW) UNS N06600 (Alloy 600) material was investigated in 360 and 325ºC simulated PWR primary water using constant load tensile instrumented for in-situ detection by the direct current potential drop technique. This CW material with high boron and low carbon bulk concentrations was found to be highly susceptible to SCC. Consistent SCC initiation times were obtained at both temperatures and the thermal activation energy for SCC initiation is estimated at ~116 kJ/mol.

Published: July 21, 2023

Citation

Zhai Z., M.B. Toloczko, D.K. Schreiber, and S.M. Bruemmer. 2018. Intergranular Stress Corrosion Crack Initiation and Temperature Dependence of Alloy 600 in Pressurized Water Reactor Primary Water. In Proceedings of CORROSION 2018 Conference & Expo, April 15-19, 2018, Phoenix, AZ, Paper No. NACE-2018-11522. Houston, Texas:NACE International. PNNL-SA-129755.