RT journal article
T1 Investigation of the Effects of Gas Metal Arc Welding and Friction Stir Welding Hybrid Process on AA6082-T6 and AA5083-H111 Aluminum Alloys
A1 Chludzinski, Mariane
A1 Garcia-Sesma, Leire
A1 Zubiri, Oier
A1 Rodriguez, María Nieves
A1 Aldanondo, Egoitz
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 friction stir welding
K1 GMAW
K1 hybrid process
K1 AA6082-T6 and AA5083-H111
K1 mechanical properties
K1 hydrogen embrittlement
AB Friction stir welding (FSW) has emerged as a solid-state joining technique offering notable advantages over traditional welding methods. Gas metal arc welding (GMAW), a fusion-based process, remains widely used due to its high efficiency, productivity, weld quality, and ease of automation. To combine the benefits of both techniques, a hybrid welding approach integrating GMAW and FSW has been developed. This study investigates the impact of this hybrid technique on the joint quality and properties of AA5083-H111 and AA6082-T6 aluminum alloys. Butt joints were produced on 6 mm thick plates, with variations in friction process parameters. Characterization included macro- and microstructural analyses, mechanical testing (hardness and tensile strength), and corrosion resistance evaluation through stress corrosion cracking tests. Results showed that FSW significantly refined and homogenized the microstructure in both alloys. AA5083-H111 welds achieved a joint efficiency of 99%, while AA6082-T6 reached 66.7%, differences attributed to their distinct strengthening mechanisms and the thermal–mechanical effects of FSW. To assess hydrogen-related behavior, slow strain rate tensile (SSRT) tests were conducted in both inert and hydrogen-rich environments. Hydrogen content was measured in arc, friction, and overlap zones, revealing variations depending on the alloy and microstructure. Despite these differences, both alloys exhibited negligible hydrogen embrittlement. In conclusion, the GMAW–FSW hybrid process successfully produced sound joints with good mechanical and corrosion resistance performance in both aluminum alloys. The findings demonstrate the potential of hybrid welding as a viable method for enhancing weld quality and performance in applications involving dissimilar aluminum alloys.
PB MDPI
SN 2075-4701
YR 2025
FD 2025-09
LK http://hdl.handle.net/10498/39296
UL http://hdl.handle.net/10498/39296
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026