Fujie Zhou, Xiujie Wang
The effects of temperature (200~325 °C) on the stress corrosion cracking (SCC) crack growth rate (CGR) of 16% one-directionally cold-rolled (1DCR16) AISI 316L austenitic stainless steel in simulated pressurized water reactor (PWR) primary water containing 50 ppb dissolved oxygen were investigated. Compared to the grain interior, the grain boundary zone exhibited higher strain localization and localized dislocation density. In simulated PWR primary water at 200 °C and 250 °C, the 1DCR16 specimens exhibited only limited intergranular stress corrosion cracking (IGSCC), with one local intergranular crack observed at 200 °C and eleven at 250 °C. Despite this increase in crack number at 250 °C, the average crack growth rate (CGR) remained extremely low, and the SCC engagement factor was below 1%. In simulated PWR primary water at 270 °C, IGSCC cracks were clearly observed, the CGR increased significantly, and the IGSCC engagement factor rose to 62.1%. At higher temperatures of 290 °C and 325 °C, the specimens demonstrated extensive IGSCC, with the SCC engagement factor exceeding 93%. The CGR of the specimens at higher temperatures was significantly higher than the values at lower temperatures, and the intergranular oxidation zone depth increased correspondingly with rising temperature, which correlated with the increased cracking susceptibility.
@article{27a3f48d-1457-49f6-88c3-fe6240475e91,
title={Temperature-dependent intergranular oxidation and its contribution to stress corrosion cracking of cold-rolled AISI 316L stainless steel in simulated PWR primary water},
author={Fujie Zhou and Xiujie Wang},
year={2026},
language={en}
}TY - JOUR TI - Temperature-dependent intergranular oxidation and its contribution to stress corrosion cracking of cold-rolled AISI 316L stainless steel in simulated PWR primary water AU - Fujie Zhou AU - Xiujie Wang PY - 2026 LA - en ER -
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