Microstructure and corrosion behavior of high power diode laser deposited Inconel 625 coatings
| Autor: | Tapio Mäntylä, P. H. Andersson, Jyrki Latokartano, Jorma Vihinen, Petri Vuoristo, Jari Tuominen |
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| Rok vydání: | 2003 |
| Předmět: |
Cladding (metalworking)
Materials science Scanning electron microscope Metallurgy Biomedical Engineering engineering.material Inconel 625 Microstructure Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Superalloy Coating Optical microscope law engineering Laser power scaling Instrumentation |
| Zdroj: | Journal of Laser Applications. 15:55-61 |
| ISSN: | 1938-1387 1042-346X |
| DOI: | 10.2351/1.1536652 |
| Popis: | A series of experiments were performed to investigate the one-step laser cladding of Inconel 625 powder, injected off-axially onto mild steel substrates. The experiments were carried out using a 6 kW high power diode laser mounted to a six axis robot system. The rectangular shape of the delivering beam was focused to a spot size of 22 mm×5 mm on the work piece. The powder feeding head, which consisted of a cyclone and flat nozzle, spread the powder stream to a spot size used. The coating samples were produced using different levels of powder feed rate (77–113 g/min), constant traveling speed of 400 mm/min, and laser power of 6 kW. Powder and laser-clad coating microstructures were studied by x-ray diffraction, scanning electron, and optical microscopy. The coating microstructure was found to consist of a directionally solidified single phase (highly alloyed Ni), face-centered cubic structure with a lattice parameter of 0.3596 nm. The corrosion resistance of the one-step laser-clad coatings was tested in 3... |
| Databáze: | OpenAIRE |
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