Abstract
The evolving interface forms between two different liquids during dissimilar metal welding can critically influence the development of the as-solidified microstructure and determine the mechanical properties of the joint. To investigate the interface evolution mechanisms during arc welding, time-resolved X-radiography was employed. The observations reveal the formation of transient finger-like protrusions at the dissimilar liquid interface prior to a brief, quasi-steady state. The analysis of the experimental observations using the magneto-thermal-hydrodynamic numerical simulations confirms that the quasi-steady state involves the formation of a short-lived solid phase, which alters the regular mixing during the process. Analysis of the in-situ experimental observations elucidate the interactions between thermal, momentum, electromagnetic and compositional fields which determine mechanisms of formation of the liquid interface instabilities and the melt pool shape. Based on the analysis, we extended our study to offer practical enhancement for dissimilar welding through offsetting the heat source.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
