Correction of Phase Balance on Nd:YAG Pulsed Laser Welded UNS S32750 Using Cobalt Electroplating Technique
نویسندگان
چکیده
Super-duplex stainless steel (SDSS) shows high mechanical and corrosion resistance because of the balanced structure austenite ferrite. However, maintaining this phase ratio after welding is a challenge. The use stabilizing components recommended to balance microstructure. addition alloying elements presents challenge characteristics Nd:YAG pulsed laser welding. An approach, which has proven be effective, metal electroplating prepare surfaces SDSS that will welded, therefore promoting in fusion zone. While effects metals such as nickel an stabilizer are well recognized, cobalt’s require more research. present work investigated influence cobalt joining process by preliminary on UNS S32750 Nd: YAG welding, specifically regarding microstructure microhardness. Three conditions were investigated, changing thickness deposited layer. modified morphology increased volume fraction austenite. around 48% was obtained using 35 ?m thick coating. microhardness affected austenite/ferrite proportions. dropped from about 375 HV 345 layer’s rose, being similar base metal. effect observed, technique effective correct
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ژورنال
عنوان ژورنال: Crystals
سال: 2023
ISSN: ['2073-4352']
DOI: https://doi.org/10.3390/cryst13020256