Heat transfer and fluid flow and their effects on the solidification microstructure in full-penetration laser welding of aluminum sheet
Shaoning Genga, Ping Jianga,*(
), Xinyu Shaoa, Lingyu Guob, Xuesong Gaob
), Xinyu Shaoa, Lingyu Guob, Xuesong Gaob
.
Fig. 6.. Comparison of the top surface morphologies of weld pool between the experimental high-speed camera images and numerical simulations. (a) Experimental: PL = 2500 W, V = 80 mm/s; (b) Simulated: PL = 2500 W, V = 80 mm/s; (c) Experimental: PL = 3000 W, V = 120 mm/s; (d) Simulated: PL = 3000 W, V = 120 mm/s; (e) Experimental: PL = 3500 W, V = 180 mm/s; (f) Simulated: PL = 3500 W, V = 180 mm/s. Note that the weld pool profile in high-speed camera images can be recognized by the fluctuation of molten metal.
