TY  - JOUR
AU  - Forster, Carola
AU  - Rothfelder, Richard
AU  - Krakhmalev, Pavel
AU  - Spurk, Christoph
AU  - Hummel, Marc
AU  - Olowinsky, Alexander
AU  - Beckmann, Felix
AU  - Moosmann, Julian
AU  - Schmidt, Michael
TI  - Unveiling thermo‐fluid dynamic phenomena in laser beam welding
JO  - Proceedings in applied mathematics and mechanics
VL  - 24
IS  - 2
SN  - 1617-7061
CY  - Weinheim
PB  - Wiley-VCH
M1  - PUBDB-2025-00590
SP  - e202400194
PY  - 2024
AB  - Laser beam welding (LBW), as a non-contact process with short cycle times and small heat affected zone, is a key technology for automated metal fabrication. Despite its efficiency, the susceptibility of certain alloys to solidification cracks remains a significant challenge. These cracks emerge in the transition zone between liquid and solid phases during the solidification process. Thermo-fluid dynamic processes within the melt pool play a crucial role in solidification crack formation during LBW, influencing heat distribution, mass transport, and consequently, the microstructure and mechanical properties of the weld. An in-depth exploration of thermo-fluid dynamics within the melt pool, contributes to an improved understanding of the correlations between process parameters and melt pool flow aiming to avoid solidification cracks. Therefore, in situ process investigations were conducted at beamline P07 of PETRA III at the German Electron and Synchrotron (DESY). 1.4404 stainless steel specimen containing an 5 wt.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1002/pamm.202400194
UR  - https://bib-pubdb1.desy.de/record/622954
ER  -