Supplementary Data for Paper "Synchrotron X-ray imaging of the formation of transverse hot cracks during laser welding of a high-strength aluminum alloy and their dependence on local solidification conditions and process parameters"

The recordings enable direct observation of the relationship between the melt pool boundary and transverse crack formation and allow qualitative comparison of crack propagation behavior for different combinations of welding speed and laser power.

In addition to the videos, the supplementary material includes minimum and maximum projections of the processed streak images. These images were used to determine crack initiation positions, crack propagation rates, and local solidification rates along the melt pool boundary in the related publication.