Friction surfacing and cold spray deposition for surface crack repair in austenitic stainless steels
SCIE
SCOPUS
- Title
- Friction surfacing and cold spray deposition for surface crack repair in austenitic stainless steels
- Authors
- Agiwal Hemant; Yeom Hwasung; Pocquette Nicholas; Sridharan Kumar; Pfefferkorn Frank E.
- Date Issued
- 2022-12
- Publisher
- Elsevier BV
- Abstract
- Two technologies, friction surfacing (FS) and cold spray deposition (CSD), have been investigated for field repair of cracks in 304 L 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. The process was performed at a high spindle speed of 20,000 RPM allowing for process forces below 500 N to be used effectively. Spherical gas-atomized 304L stainless steel powder, in size range of 25-44 mu m, was used as feedstock powder for the cold spray process for deposition on 304L substrates. Both technologies showed leak-tight crack repair capabilities on similar to 30-50 mu m wide simulated through-crack specimens based on helium leak tests.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/118866
- DOI
- 10.1016/j.mtcomm.2022.104692
- ISSN
- 2352-4928
- Article Type
- Article
- Citation
- Materials Today Communications, vol. 33, 2022-12
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- There are no files associated with this item.
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