Effect of fabrication parameters on the microstructure and mechanical properties of wire arc additive manufactured AZ61 alloy

•The optimum fabrication parameters of WAAM process were determined for the AZ61 alloy.•The excellent mechanical properties were attained with strength of 260 Pa and elongation of 16.2%.•The mechanical performance of present AZ61 alloy behaves superior to that of other WAAM Mg alloys.•The fine grains and limited defects contribute to the exceptional mechanical properties.