| Abstrakt: |
In this research, mild steel AISI1080 was butt welded by an automated shielded metal arc technique (ASMAW) using E6013 electrode. Parameters such as welding speed (3.19, 3.9 and 4.6 mm/s), with the electrode diameter (2.6, 3.2 and 4.0 mm), and welding angle of (45, 50 and 60°), were tested and listed by Taguchi orthogonal arrays. Microstructure of welded samples were observed using scanning electron microscope (SEM). According to the microstructural observations, the amount of pearlitic phase in the weld area increased with increase in welding speed, and angle of electrode, and the smallest size electrode of 2.6mm at the expense of ferrite. However, in the HAZ the amount of ferrite increases with increase in welding speed and the electrode diameter. [ABSTRACT FROM AUTHOR] |
