NSUF 21-4296: Irradiation of stainless steel claddings produced by additive manufacturing for in-core applications

We are assessing the impact of irradiation on corrosion resistance of samples clad via the additively manufactured process of laser-wire directed energy deposition (DED). Samples are composed of stainless steel cladding on carbon steel backing. We have already performed extensive out-of-pile characterization of the corrosion-resistance of these alloys. We propose irradiation studies and post-irradiation examination of optimized alloys to identify key parameters for in-pile qualification. There will be 4 samples and one round of irradiation. Two samples will be irradiated on cladding surfaces and two irradiated in cross-section with 1.5 MeV protons at 400°C. One of each sample geometry will be irradiated at 0.5 and 1 dpa at a dose rate of up to 10-5 dpa/sec. Samples will be characterized on the clad surface and along the composition gradient by localized electrochemical testing, electron microscopy, and nanoindentation to understand the irradiation effects. The outcome of this work will allow us to quantify the change in corrosion resistance of DED clad samples with and without irradiation. This is a key step toward qualification of the DED process for nuclear applications.

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Поле	Стойност
Awarded Institution	Oregon State University
Embargo End Date	2024-05-09
Facility Tech Lead	Adrien Couet
NSUF Call	FY 2021 RTE 1st Call
PI	Burkan Isgor
PIE Facilities	Characterization Laboratory for Irradiated Materials
Project Member	Dr. Julie Tucker, Associate Professor - Oregon State University (https://orcid.org/0000-0002-0886-1580)
Project Member	Professor Burkan Isgor, Professor - Oregon State University (https://orcid.org/0000-0002-0554-3501)
Project Notes	Awarded on 06/07/2021
Project Type	RTE
RTE Number	4296