RT journal article
T1 The Effects of HLAW Parameters for One Side T-Joints in 15 mm Thickness Naval Steel
A1 Churiaque Bermejo, Cristina
A1 Sánchez Amaya, José María
A1 Porrúa-Lara, Manuel
A1 Gumenyuk, Andrey
A1 Rethmeier, Michael
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 T-joints
K1 hybrid laser arc welding
K1 naval steel
K1 high thickness
K1 full penetration
K1 process parameters
K1 microstructure
AB The present contribution is the first research reporting full penetration HLAW joints in 15 mm thick EH36 steel butt T-welds with square grooves on 2F welding position by single-sided welding. The effects of welding parameters were investigated to increase the quality of the joints. Conditions leading to defect-free full penetration welds fulfilling naval regulations includes a laser power of 12.5 kW, a welding speed of 1.6 m/min and the vertical laser offset distance from the flange of 1 mm. Advanced characterization of selected welds included a microstructural identification by optical microscopy, SEM, and XRD, revealing the presence of acicular, polygonal and Widmanstatten ferrite, lath martensite, and some retained austenite at FZ. Hardness and microhardness mapping tests showed values of 155 HV at base metal and 200 to 380 HV at the fusion zone connecting the web to the flange.
PB MDPI
SN 2075-4701
YR 2021
FD 2021-04
LK http://hdl.handle.net/10498/25002
UL http://hdl.handle.net/10498/25002
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026