Abstract
The flowing behaviors of weld pool during electron beam welding (EBW) were investigated using T2 copper by physical experiments. A flowing model of weld pool is developed basing on the morphologies observation and analysis. The flow of weld pool for fully penetrated weld is composed of upward convection flow around the keyhole, horizontal flow toward fusion line near top surface and bottom surface, and horizontal flow backward alone weld direction. According to the flowing model, the formation of cavity defection and characteristic of weld in cross-section can be understood.
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