Investigation of the role of irradiation on the corrosion resistance of structural alloys is of vital importance for selection of supercritical water-cooled reactor (SCWR) materials. Gamma heating under SCWR conditions, which induces enhancement of radiolysis and corrosion kinetics at interfaces, can be efficiently simulated by electron beam irradiation over a wide range of deposited dose and temperature. The NSC KIPT-sited Canada–Ukraine Electron Irradiation Test Facility (CU-EITF) still remains the only operating facility capable of in situ irradiation of specimens in a supercritical water (SCW) natural circulation loop. This paper reports the results of postirradiation studies of Zr–1%Nb and Ni–Cr Inconel 690/52MSS alloys after a ~500-h-long exposure in the CU-EITF in the near-critical (23.5 MPa/360–385°C) regime. Results of scanning electron microscopy (SEM) studies of the sample microstructure are presented along with those of the electron-irradiated loop piping, SS X18H10T. The results of corrosion tests under electron-irradiation are correlated to the calculated three-dimensional (3D) fields of absorbed dose and temperature and to the reference data obtained in-pile for topical materials. The paper also discusses the prospects for the use of the CU-EITF facility within a cooperative SCWR program and presents an outlook of the facility development.
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April 2016
Research-Article
Combined Effect of Irradiation, Temperature, and Water Coolant Flow on Corrosion of Zr-, Ni–Cr-, and Fe–Cr-Based Alloys
D. A. Guzonas
D. A. Guzonas
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O. S. Bakai
V. M. Boriskin
A. M. Dovbnya
S. V. Dyuldya
D. A. Guzonas
1Corresponding author.
Manuscript received May 8, 2015; final manuscript received July 16, 2015; published online February 29, 2016. Assoc. Editor: Thomas Schulenberg.
ASME J of Nuclear Rad Sci. Apr 2016, 2(2): 021007 (11 pages)
Published Online: February 29, 2016
Article history
Received:
May 8, 2015
Revision Received:
July 16, 2015
Accepted:
July 23, 2015
Citation
Bakai, O. S., Boriskin, V. M., Dovbnya, A. M., Dyuldya, S. V., and Guzonas, D. A. (February 29, 2016). "Combined Effect of Irradiation, Temperature, and Water Coolant Flow on Corrosion of Zr-, Ni–Cr-, and Fe–Cr-Based Alloys." ASME. ASME J of Nuclear Rad Sci. April 2016; 2(2): 021007. https://doi.org/10.1115/1.4031126
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