TY  - JOUR
AU  - Vyskoč, Maroš
AU  - Novaković, Mirjana
AU  - Potočnik, Jelena
AU  - Kovačocy, Pavel
AU  - Jurči, Peter
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12569
AB  - The AZ31B magnesium alloy was laser-welded at three different (1.2, 1.6, and 2 kW) laser output powers in the present work. All the butt weld joints are almost defect-free. The size of the weld joint slightly increases with increasing laser output power. The weld metal is formed by columnar grains of the alpha phase at the weld metal/base metal interface, but a finely equiaxed grain microstructure is formed in the centres of fusion zones. The minor phases are Mg17Al12 and (Al,Mg)8Mn5. The weld metal microstructure manifests clear refinement with a decrease in laser output power. Microstructural changes are reflected in changes in mechanical properties; weld joints prepared at the lowest laser output power manifest the highest microhardness, ultimate tensile strength, yield strength, and almost 90% joint efficiency. This is related to the different extents of strengthening mechanisms that act most effectively in weld joints made at 1.2 kW laser output power. Detail analysis of fracture surfaces confirmed that lower laser output power and general microstructural refinement favours the formation of plastically deformed material, which is in excellent agreement with both the experimentally determined and the calculated values of yield strength.
T2  - Materials Characterization
T1  - Microstructure – Properties relationship in laser-welded AZ31B magnesium alloy
VL  - 208
SP  - 113664
DO  - 10.1016/j.matchar.2024.113664
ER  - 

@article{
author = "Vyskoč, Maroš and Novaković, Mirjana and Potočnik, Jelena and Kovačocy, Pavel and Jurči, Peter",
year = "2024",
abstract = "The AZ31B magnesium alloy was laser-welded at three different (1.2, 1.6, and 2 kW) laser output powers in the present work. All the butt weld joints are almost defect-free. The size of the weld joint slightly increases with increasing laser output power. The weld metal is formed by columnar grains of the alpha phase at the weld metal/base metal interface, but a finely equiaxed grain microstructure is formed in the centres of fusion zones. The minor phases are Mg17Al12 and (Al,Mg)8Mn5. The weld metal microstructure manifests clear refinement with a decrease in laser output power. Microstructural changes are reflected in changes in mechanical properties; weld joints prepared at the lowest laser output power manifest the highest microhardness, ultimate tensile strength, yield strength, and almost 90% joint efficiency. This is related to the different extents of strengthening mechanisms that act most effectively in weld joints made at 1.2 kW laser output power. Detail analysis of fracture surfaces confirmed that lower laser output power and general microstructural refinement favours the formation of plastically deformed material, which is in excellent agreement with both the experimentally determined and the calculated values of yield strength.",
journal = "Materials Characterization",
title = "Microstructure – Properties relationship in laser-welded AZ31B magnesium alloy",
volume = "208",
pages = "113664",
doi = "10.1016/j.matchar.2024.113664"
}

Vyskoč, M., Novaković, M., Potočnik, J., Kovačocy, P.,& Jurči, P.. (2024). Microstructure – Properties relationship in laser-welded AZ31B magnesium alloy. in Materials Characterization, 208, 113664.
https://doi.org/10.1016/j.matchar.2024.113664

Vyskoč M, Novaković M, Potočnik J, Kovačocy P, Jurči P. Microstructure – Properties relationship in laser-welded AZ31B magnesium alloy. in Materials Characterization. 2024;208:113664.
doi:10.1016/j.matchar.2024.113664 .

Vyskoč, Maroš, Novaković, Mirjana, Potočnik, Jelena, Kovačocy, Pavel, Jurči, Peter, "Microstructure – Properties relationship in laser-welded AZ31B magnesium alloy" in Materials Characterization, 208 (2024):113664,
https://doi.org/10.1016/j.matchar.2024.113664 . .