[HTML][HTML] Geometry and stability of the capillary during deep-penetration laser welding of AlMgSi at high feed rates

F Fetzer, C Hagenlocher, R Weber, T Graf - Optics & Laser Technology, 2021 - Elsevier
The influence of the feed rate on the geometry of the capillary and the process stability
during laser beam welding of the AlMgSi aluminum alloy AA6082 was investigated by …

[HTML][HTML] Weld seam geometry and electrical resistance of laser-welded, aluminum-copper dissimilar joints produced with spatial beam oscillation

M Jarwitz, F Fetzer, R Weber, T Graf - Metals, 2018 - mdpi.com
Spatial beam oscillation during laser beam welding of aluminum to copper was investigated.
The beam was spatially oscillated perpendicular to the direction of feed in a sinusoidal …

[HTML][HTML] Explicit analytical expressions for the influence of welding parameters on the grain structure of laser beam welds in aluminium alloys

C Hagenlocher, F Fetzer, D Weller, R Weber, T Graf - Materials & Design, 2019 - Elsevier
An explicit analytical model to express the influence of the welding parameters on the grain
structure that is formed in laser beam welds in aluminium alloys is proposed and verified for …

[HTML][HTML] Inline weld depth evaluation and control based on OCT keyhole depth measurement and fuzzy control

M Schmoeller, T Weiss, K Goetz, C Stadter, C Bernauer… - Processes, 2022 - mdpi.com
In an industrial joining process, exemplified by deep penetration laser beam welding,
ensuring a high quality of welds requires a great effort. The quality cannot be fully …

[HTML][HTML] Process limit imposed by the occurrence of undercuts during high-speed laser welding

EN Reinheimer, R Weber, T Graf - Journal of Laser Applications, 2022 - pubs.aip.org
High-speed laser welding is a very efficient process that results in weld seams of high
quality. The process is limited by the occurrence of weld defects, such as humping and …

Analysis on the influence of vapor capillary aspect ratio on pore formation in laser beam welding of aluminum

M Hummel, C Hagenlocher, A Haeusler… - Journal of Materials …, 2023 - Elsevier
Laser welds of electrical components made of highly conductive and light weight aluminum
material are essential for the successful transformation of the energy and mobility sector …

[HTML][HTML] High-speed x-ray investigation of pore formation during full penetration laser beam welding of AA6016 aluminum sheets contaminated with lubricants

C Hagenlocher, J Lind, R Weber, T Graf - Applied Sciences, 2020 - mdpi.com
Featured Application Authors are encouraged to provide a concise description of the specific
application or a potential application of the work. This section is not mandatory. Abstract The …

[HTML][HTML] Supercritical melt flow in high-speed laser welding and its interdependence with the geometry of the keyhole and the melt pool

EN Reinheimer, P Berger, C Hagenlocher… - … International Journal of …, 2024 - Springer
The advent of undercuts and humping limits the applicable speed of deep-penetration laser
welding. Recent findings additionally show that a significant change of the keyhole's shape …

Modulation of the local grain structure in laser beam welds to inhibit the propagation of centerline hot cracks

C Hagenlocher, M Seibold, R Weber, T Graf - Procedia CIRP, 2018 - Elsevier
The morphology and the size of the grains of a weld result from the solidification rate and the
temperature gradient during solidification. The heat input and the velocity of the welding …

Influence of the capillary geometry on the weld seam quality during high-speed laser welding

EN Reinheimer, R Weber, T Graf - Procedia CIRP, 2022 - Elsevier
With high feed rates> 15 m/min, the laser beam welding process is very stable and efficient.
It is known that increasing the feed rate leads to an elongation of the capillary. It is also …