Analytical electron microscopy and three-dimensional atom probe tomography (ATP) examinations of surface and near-surface oxidation have been performed on Ni-30%Cr alloy 690 materials after exposure to high-temperature, simulated PWR primary water. The oxidation nanostructures have been characterized at crack walls after stress-corrosion crack growth tests and at polished surfaces of unstressed specimens for the same alloys. Localized oxidation was discovered for both crack walls and surfaces as continuous filaments (typically
Published: July 21, 2023
Citation
Olszta M.J., D.K. Schreiber, L.E. Thomas, and S.M. Bruemmer. 2011.Penetrative Internal Oxidation from Alloy 690 Surfaces and Stress Corrosion Crack Walls during Exposure to PWR Primary Water. In Proceedings of the 15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, August 7-11, 2011, Colorado Springs, CO, edited by J.T. Busby, G. Ilevbare and P.L. Andresen, 331–342. Cham:Springer.PNNL-SA-81561.doi:10.1007/978-3-319-48760-1_19