Datum
2021-12-15Schlagwort
600 Technik LaserauftragsschweißenLaserBeschichtungInterkristalline KorrosionNicht rostender StahlMetadata
Zur Langanzeige
Aufsatz
A Novel Approach to Inhibit Intergranular Corrosion in Ferritic Stainless Steel Welds Using High-Speed Laser Cladding
Zusammenfassung
Ferritic stainless steels are prone to localized corrosion phenomena such as pitting corrosion or intergranular corrosion, in particular when jointed by fusion welding processes. State-of-the-art techniques to avoid intergranular corrosion mainly consist of alternating alloy concepts or post-weld heat-treatments—all of which are associated with increased production costs. Hence, the present investigation seeks to introduce a novel approach for the inhibition of intergranular corrosion in ferritic stainless steel welds through the use of high-speed laser cladding. Here, vulnerable sites prone to intergranular corrosion along the weld seam area are coated with a chemically resistant alloy, whereby an overlap is achieved. Optical and electron microscopy as well as computer tomography and tensile tests reveal that the detrimental effects of intergranular corrosion in both stabilized and unstabilized ferritic stainless steel are substantially reduced. In addition to that, the effects of varying overlap widths on the identified corrosion phenomena are studied. Moreover, the resulting dilution and precipiation phenomena at the clad–sheet interface are thoroughly characterized by electron backscatter diffraction and energy dispersive X-ray spectroscopy, whereby interrelationships to corrosion resistance can be drawn. As a result of this investigation, the number of techniques for the inhibition of intergranular corrosion is enlarged, and substantial cost-saving potentials in the manufacturing industry are unlocked.
Zitierform
In: Metals Volume 11 / Issue 12 (2021-12-15) eissn: 2075-4701Förderhinweis
Gefördert durch den Publikationsfonds der Universität KasselZitieren
@article{doi:10.17170/kobra-202205066138,
author={Sommer, Niklas and Grimm, Lukas and Wolf, Christian and Böhm, Stefan},
title={A Novel Approach to Inhibit Intergranular Corrosion in Ferritic Stainless Steel Welds Using High-Speed Laser Cladding},
journal={Metals},
year={2021}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2021$n2021 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/13813 3000 Sommer, Niklas 3010 Grimm, Lukas 3010 Wolf, Christian 3010 Böhm, Stefan 4000 A Novel Approach to Inhibit Intergranular Corrosion in Ferritic Stainless Steel Welds Using High-Speed Laser Cladding / Sommer, Niklas 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/13813=x R 4204 \$dAufsatz 4170 5550 {{Laserauftragsschweißen}} 5550 {{Laser}} 5550 {{Beschichtung}} 5550 {{Interkristalline Korrosion}} 5550 {{Nicht rostender Stahl}} 7136 ##0##http://hdl.handle.net/123456789/13813
2022-05-06T05:18:24Z 2022-05-06T05:18:24Z 2021-12-15 doi:10.17170/kobra-202205066138 http://hdl.handle.net/123456789/13813 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ localized corrosion intergranular corrosion laser cladding directed energy deposition laser metal deposition thin sheet sheet metal ferritic stainless steel 600 A Novel Approach to Inhibit Intergranular Corrosion in Ferritic Stainless Steel Welds Using High-Speed Laser Cladding Aufsatz Ferritic stainless steels are prone to localized corrosion phenomena such as pitting corrosion or intergranular corrosion, in particular when jointed by fusion welding processes. State-of-the-art techniques to avoid intergranular corrosion mainly consist of alternating alloy concepts or post-weld heat-treatments—all of which are associated with increased production costs. Hence, the present investigation seeks to introduce a novel approach for the inhibition of intergranular corrosion in ferritic stainless steel welds through the use of high-speed laser cladding. Here, vulnerable sites prone to intergranular corrosion along the weld seam area are coated with a chemically resistant alloy, whereby an overlap is achieved. Optical and electron microscopy as well as computer tomography and tensile tests reveal that the detrimental effects of intergranular corrosion in both stabilized and unstabilized ferritic stainless steel are substantially reduced. In addition to that, the effects of varying overlap widths on the identified corrosion phenomena are studied. Moreover, the resulting dilution and precipiation phenomena at the clad–sheet interface are thoroughly characterized by electron backscatter diffraction and energy dispersive X-ray spectroscopy, whereby interrelationships to corrosion resistance can be drawn. As a result of this investigation, the number of techniques for the inhibition of intergranular corrosion is enlarged, and substantial cost-saving potentials in the manufacturing industry are unlocked. open access Sommer, Niklas Grimm, Lukas Wolf, Christian Böhm, Stefan doi:10.3390/met11122039 Laserauftragsschweißen Laser Beschichtung Interkristalline Korrosion Nicht rostender Stahl publishedVersion eissn: 2075-4701 Issue 12 Metals Volume 11 false 2039
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