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Laser-modified wire arc cladding
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SYSNO ASEP 0645990 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Laser-modified wire arc cladding Author(s) Šebestová, Hana (UPT-D) RID, ORCID, SAI
Novotný, Jan (UPT-D) ORCID, SAI, RID
Štěpán, Jan (UPT-D) ORCID
Ambrož, Ondřej (UPT-D) ORCID, RID, SAI
Joska, Z. (CZ)
Gross, Jan (UPT-D)
Mrňa, Libor (UPT-D) RID, ORCID, SAINumber of authors 7 Article number 100381 Source Title Journal of Advanced Joining Processes - ISSN 2666-3309
Roč. 13, June (2026)Number of pages 8 s. Publication form Online - E Language eng - English Country NL - Netherlands Keywords wire arc cladding ; cobalt alloy ; laser oscillation ; preheating ; cooling rate ; microhardness ; microstructure Subject RIV JP - Industrial Processing OECD category Materials engineering R&D Projects EH22_008/0004573 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UPT-D - RVO:68081731 DOI https://doi.org/10.1016/j.jajp.2026.100381 Annotation The deposition of functional cladding layers is a widely adopted technique to enhance the surface performance of engineering components without compromising their bulk material properties. Among the available techniques, wire arc cladding offers high productivity and is particularly effective for depositing relatively thick coatings. Thanks to its high hardness and reasonable toughness, Stellite 6 alloy is well-suited for wear-resistant claddings, however, its application through various welding processes is often accompanied by cracking. In this study, we propose and experimentally investigate a novel approach to wire arc cladding of this Co-based alloy that integrates localized in-situ heat treatment using a defocused oscillating laser beam. The laser-assisted process produced continuous and more uniform cladding layers. Compared to conventional wire arc cladding, the cooling rate decreased by 40 %, resulting in improved bead homogenization and fewer welding voids, while maintaining comparable microhardness after two passes. Enhanced bead fusion, facilitated by the laser, enabled very high deposition speed without compromising the structural integrity of the claddings. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2026 Electronic address https://www.sciencedirect.com/science/article/pii/S2666330926000099
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