RT journal article
T1 Fatigue behavior of 8 mm thick steel butt joints performed with hybrid laser arc welding
A1 Sánchez Amaya, José María
A1 Gómez Parra, Álvaro
A1 Churiaque Bermejo, Cristina
A1 Fernández Vidal, Severo Raúl
A1 Gámez López, Antonio Juan
A2 Ingeniería Mecánica y Diseño Industrial
K1 Quality assurance
K1 Fatigue limit
K1 Hardness
K1 Laser beam welding
K1 Materials properties
K1 Mechanical properties
K1 Crack initiation and detection
K1 Fatigue testing
K1 Welding
K1 Lasers
AB In the present research, the hybrid laser arc welding (HLAW) process has been applied to join 8 mm thick structural S355J2N steel under 1G configuration. Welding tests were performed at the Laser Welding Advanced Center available at the University of Cadiz, Spain. Different experimental welding parameters were fitted to obtain sound butt welds. The welds were subjected to different quality control tests, including visual inspection, metallographic characterization, microhardness measurements, and tensile and fatigue tests. The HLAW tests were performed at higher welding rates in 1G configuration than previously reported for 8 mm thick steels. Complete penetration was achieved in all welds, presenting suitable geometries without defects such as cracks, root humps, or porosities. Microhardness values measured at different welding zones were always below 350 HV. All welds broke at the base metal in the tensile tests. The present contribution reports novel fatigue results for these butt hybrid welds. The samples welded at the highest welding rate (2.5 m/min) were the ones providing the best fatigue response, due to the lower heat input applied under this condition.
PB AIP Publishing
YR 2023
FD 2023-10-17
LK http://hdl.handle.net/10498/31056
UL http://hdl.handle.net/10498/31056
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-may-2026