Friction surfacing and cold spray deposition for surface crack repair in austenitic stainless steels

Agiwal, Hemant; Yeom, Hwasung; Pocquette, Nicholas; Sridharan, Kumar; Pfefferkorn, Frank E.

doi:10.1016/j.mtcomm.2022.104692

Friction surfacing and cold spray deposition for surface crack repair in austenitic stainless steels

Journal Article · Tue Oct 18 00:00:00 EDT 2022 · Materials Today Communications

DOI:https://doi.org/10.1016/j.mtcomm.2022.104692· OSTI ID:2418334

Agiwal, Hemant ^[1]; Yeom, Hwasung ^[2]; Pocquette, Nicholas ^[2]; Sridharan, Kumar ^[2]; Pfefferkorn, Frank E. ^[2]

Univ. of Wisconsin, Madison, WI (United States); OSTI
Univ. of Wisconsin, Madison, WI (United States)

Two technologies, friction surfacing (FS) and cold spray deposition (CSD), have been investigated for field repair of cracks in 304L austenitic stainless steel. Both technologies are low-heat-input, solid-state technologies that do not introduce the detrimental effects of solidification, such as compositionally segregated microstructures and shrinkage stresses. Friction surfacing was performed using a 304L stainless steel rod over the substrate of the same material. Further, the process was performed at a high spindle speed of 20,000 RPM allowing for process forces below 500N to be used effectively. Spherical gas-atomized 304L stainless steel powder, in size range of 25–44 µm, was used as feedstock powder for the cold spray process for deposition on 304L substrates. Both technologies showed leak-tight crack repair capabilities on ~30–50 µm wide simulated through-crack specimens based on helium leak tests.

Research Organization:: Univ. of Wisconsin, Madison, WI (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE); National Science Foundation (NSF)

Grant/Contract Number:: NE0008801

OSTI ID:: 2418334

Alternate ID(s):: OSTI ID: 1896521

Journal Information:: Materials Today Communications, Journal Name: Materials Today Communications Journal Issue: C Vol. 33; ISSN 2352-4928

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

36 MATERIALS SCIENCE
Cold spray deposition
Crack repair
Friction surfacing
Stainless steel

Friction surfacing and cold spray deposition for surface crack repair in austenitic stainless steels

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References (11)

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