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- W2354865234 abstract "The laser welding-brazing is an effective process to inhibit or reduce FeAl brittle intermetallic compound produced during laser welding-brazing of steel and aluminum alloy.The laser lap welding test was carried out based on the DC56D+ZF galvanized steel with thickness of 1.2 mm and the 6016 aluminum alloy with the fiber laser.The Matlab software was used,according to the actual situation of welding process,the steel and aluminum dissimilar metal laser welding pool shapes of the mathematical model in the flight quasi-steady state was established under a certain basic assumption.Based on the quasi-steady numerical equations,the shape of molten pool geometry distribution was obtained.The welding process parameters were adjusted through the experiments to get the best welding forming.By optical microscopy,scanning electron microscopy and X-ray diffractometry,the microstructure,element distribution and phase composition of the steel/aluminum interface were studied.The results show that when the welding beam irradiates at the aluminum-seam interface,the welding power and welding speed have great influence on pool geometry.With the laser power increasing,the penetration increases;while with the welding speed increasing,the penetration depth becomes shallow.When the welding power is 1 600?1 800 W,the welding speed v is 30 mm/s and the defocus distance D is 0 mm,the best forming of welding is obtained,no cracks,holes and other defects are seen,and there is a bench-shape structure in the welding joint area.In the platform area,there is obvious boundary between the steel and aluminum.The interface bonding relies on the liquid aluminum on the wetting,filling and spreading of steel surface.In the concave region,the steel/aluminum fusion is better.The width is large for Fe and Al elements mixing zone,and FeAl brittle intermetallic compounds do not form,the thermal diffusion bonding between Fe and Al is the main reason for the region." @default.
- W2354865234 created "2016-06-24" @default.
- W2354865234 creator A5048173479 @default.
- W2354865234 date "2012-01-01" @default.
- W2354865234 modified "2023-09-23" @default.
- W2354865234 title "Laser welding-brazing and numerical simulation of zinc-coated steel and 6016 aluminum alloy" @default.
- W2354865234 hasPublicationYear "2012" @default.
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