Effect of Mo in Ni-30Cr filler metal on the eutectic phases of weld metal
نویسندگان
چکیده
Abstract The effects of Mo content on the microstructure and solidification path gas tungsten arc welding deposited Nb-bearing nickel-based alloy wire were studied. entered matrix γ phase as a solid solution was precipitated in form eutectic phases including Laves, σ, MC carbides. In Ni-30Cr weld metal, plays leading role σ formation, while relatively minor carbides Laves formation compared with Nb. addition could reduce Nb dendrite arm, interdendritic region, phase. With increasing content, changed from rod-like shape to blocky shape. When exceeded 4%, + structure formed. about 5.0%, there microcracks phases, at σ/MC interface. To avoid due segregation Mo, had be controlled below 4%.
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ژورنال
عنوان ژورنال: Welding in The World
سال: 2023
ISSN: ['0043-2288', '1878-6669']
DOI: https://doi.org/10.1007/s40194-023-01469-8