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Manufacturing Oxide Dispersion Strengthened (ODS) steel plate via cold spray and friction stir processing

Journal Article · · Journal of Nuclear Materials

Oxide dispersion strengthened (ODS) steels, traditionally fabricated by ball milling and conventional powder metallurgy techniques to achieve bulk form, followed by intricate rolling and thermal treatment steps to achieve plate or sheet form. Here, we present a novel processing route that combines cold spray (CS) with friction stir processing (FSP) to manufacture ODS steel plate directly from gas atomization reaction synthesis (GARS)-prepared powder, thus no rolling steps involved. Microstructural and mechanical characterizations were performed to assess the quality and properties of the resulting ODS steel plate. Our findings demonstrate that the slightly porous CS deposited layer was fully consolidated after FSP, yielding a fully dense ODS steel plate that exhibited a favorable tradeoff between strength and ductility upon extraction from the substrate. Furthermore, through microstructural analysis, we revealed the presence of an appreciable density (~1022/m3) of nano-sized oxide particles, with the majority being smaller than 5 nm via the combined CS + FSP fabrication route. This work serves as a first proof-of-concept demonstration of the manufacturing approach described herein, offering a possible alternative route for producing ODS steel plates.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE
Grant/Contract Number:
AC05-76RL01830; AC02–07CH11358; AC02-07CH11358; AC05–76RL01830; AT2030110-13784.
OSTI ID:
2439243
Alternate ID(s):
OSTI ID: 2337980; OSTI ID: 2340129
Report Number(s):
PNNL-SA-184484; IS-J-11,314
Journal Information:
Journal of Nuclear Materials, Vol. 596; ISSN 0022-3115
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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