1. Investigation of Pitting Corrosion in Sensitized Modified High-Nitrogen 316LN Steel After Neutron Irradiation
- Author
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Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Short, Michael Philip, Short, Michael P, Merezhko, D. A., Merezhko, M. S., Gussev, M. N., Busby, J. T., Maksimkin, O. P., Garner, F. A., Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Short, Michael Philip, Short, Michael P, Merezhko, D. A., Merezhko, M. S., Gussev, M. N., Busby, J. T., Maksimkin, O. P., and Garner, F. A.
- Abstract
The influence has been studied of thermo-mechanical treatment, sensitization conditions, and neutron irradiation on the pitting corrosion resistance of austenitic 316LN stainless steel variants in 10% FeCl[subscript 3]·6H[subscript 2]O at 22 °C. Variants of this steel were modified with additions of nitrogen, manganese, copper, and tungsten, as well as testing cast, cold-rolled, grain boundary engineered (GBE), and as-received variants. It was found that the 316LN steel variant with additions of 0.2% N and 2% Mn had the best pitting corrosion resistance of all studied conditions. When irradiated in a light water reactor (LWR) to a maximum fluence of 3 × 1017 n/cm[superscript 2] (E > 1.1 meV, Tirr < 50 °C), neutron irradiation surprisingly increased the resistance of GBE steels to pitting corrosion. An anisotropy of corrosion resistance of GBE and cold rolled steels was observed. Keywords: Austenitic stainless steel, Alloying, Nitrogen, Tungsten, Copper, Sensitization, Pitting corrosion, Grain boundary engineering
- Published
- 2018