Ingenieurwissenschaften und zugeordnete Tätigkeiten
Filtern
Erscheinungsjahr
- 2024 (1)
Dokumenttyp
Sprache
- Russisch (1)
Referierte Publikation
- nein (1) (entfernen)
Schlagworte
- Three-dimensional crystallization (1) (entfernen)
Organisationseinheit der BAM
- 9.3 Schweißtechnische Fertigungsverfahren (1) (entfernen)
A method of solving the thermo-fluid dynamics problem is presented, enabling the prediction of the shape and dimensions of the weld pool during keyhole laser welding of thick plates. It is shown that the rear weld pool boundary can be satisfactorily approximated by a set of superellipses (Lamé curves). The presence of a convex rear weld pool boundary in the mid-plane has been observed experimentally and reproduced numerically. It was shown that in this zone the concentration of liquating impurities increases and the local solidification temperature decreases, contributing to the susceptibility to hot cracking.