6.3 Behaviors of Keyhole and Weld Pool Under the Effect …
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(a) Above the weld pool
(b) Front of the weld pool
Fig. 6.8 Velocity vector distribution on the weld pool surface at 0.1 ms under the effect of auxiliary
gas
Fig. 6.9 Velocity vector distribution on the weld pool surface at 7 ms under the effect of auxiliary
gas