{"b357d5772d11474e079011ef5a7b594cjmichel":{"DOI":"","ISBN":"","ISSN":"","URL":"","abstract":"High-strength aluminum alloys offer excellent weight-specific mechanical properties, making them an ideal choice for parts in electromobility applications like battery trays. However, their susceptibility to transverse hot cracking during laser welding at high welding velocities is challenging. This study investigates the mechanisms of transverse hot crack formation by means of numerical simulations of the temperature field and melt flow in the melt pool and validates the results with experiments. The results reveal a critical zone at the side of the melt pool which is characterized by a high static pressure drop at the liquidus isotherm as a result of high melt flow velocities and cooling rates, which affect the intergranular melt flow during solidification. The study provides valuable findings, which enable the optimization of high-speed laser welding of aluminum alloys, to avoid the formation of transverse hot cracks.","annote":"","author":[{"family":"Michel","given":"Johannes"},{"family":"Wagner","given":"Jonas"},{"family":"Holder","given":"Frauke"},{"family":"Zaiß","given":"Felix"},{"family":"Haas","given":"Michael"},{"family":"Hagenlocher","given":"Christian"},{"family":"Graf","given":"Thomas"}],"citation-label":"michel2025transversecracks","collection-editor":[],"collection-title":"","container-author":[],"container-title":"","documents":[],"edition":"","editor":[],"event-date":{"date-parts":[["2025"]],"literal":"2025"},"event-place":"","id":"b357d5772d11474e079011ef5a7b594cjmichel","interhash":"3bd32eab7941897d45cf2e73a769eeb4","intrahash":"b357d5772d11474e079011ef5a7b594c","issue":"","issued":{"date-parts":[["2025"]],"literal":"2025"},"keyword":"Aluminium Cracking MacroMaterialProcessing Simulation Welding myown","misc":{"eventtitle":"Lasers in Manufacturing Conference  LiM 2025","venue":"Munich, Germany","language":"English","eventdate":"23 - 26 June 2025"},"note":"","number":"","page":"","page-first":"","publisher":"","publisher-place":"","status":"","title":"Transverse hot cracking in high-speed laser welding of high-strength aluminum alloys","type":"speech","username":"jmichel","version":"","volume":""}}