Comparative study between TIG-MIG Hybrid, TIG and MIG welding of 1008 steel joints for enhanced structural integrity

This study investigates the combined effect of Tungsten Inert Gas (TIG) and Metal (MIG) arcs in achieving improved mechanical microstructural properties compared with standalone TIG MIG based on optimum parameters setting for welding processes. Miller machines a maximum capacity 400 A were used as heat source. The welds produced by TIG-MIG, processes characterized via tensile hardness testing, macrostructural investigations, analysis, X-ray diffraction analysis. results from characterization show that TIG-MIG hybrid joint had better strength, yield strength percentage elongation than welded joints, respectively. fractograph was uniform fine dimples showing more ductile failure characteristic. Macrostructural evaluation revealed heat-affected zone larger those individual microstructure showed an abundant presence acicular ferrite cementite boundaries grain. Martensite phases diffracted at higher intensity peaks weld while iron diffracting high-intensity weld, lastly, only which accounted its lowest value when joints.