Influence of the focal position on the melt flow during laser welding of steel
Source abstract
Abstract
For keyhole laser welding of tempered steel, we show that the characteristic formation of eddies in the melt flow significantly depends on the focal position. The local melt flow velocities and accelerations were analyzed in-situ by means of x-ray imaging. It was observed that the keyhole geometry as well as the direction of rotation of the eddy close to the weld pool surface changes when the focal-position is shifted by one Rayleigh length.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Non-Destructive Testing Techniques · Hydrogen embrittlement and corrosion behaviors in metals
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Affiliations
TRUMPF GmbH + Co. KG , Johann-Maus-Straße 2, 71254 Ditzingen, Germany
Institut fuer Strahlwerkzeuge (IFSW) , Pfaffenwaldring 43, 70569 Stuttgart, Germany
References (14)
Show source-provided references
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