Quenching's effect on a single-V butt welded joint made of mild steel's impact resistance

Abstract

In order to investigate the effects of a quenching medium on the impact behavior of mild steel welded joints, the samples were welded together using a single V-butt junction. Gauge During welding, 100 amps of current were used with a terminal voltage of 140 V, and 8 coated electrodes, each measuring 4 mm in diameter. A brine solution with a concentration of 0.1 mol per liter, two liters of water and diesel oil, and air were used as the four different quenching mediums. The Impact Test was carried out with the assistance of the Izod impact machine. The findings of the tests indicate that, of all the quenchants, quenching in air generates the highest average impact strength while also being the gentlest. On the other hand, quenching in brine solution generates the lowest average impact strength. When it came to quenching parts or components that had been welded while being subjected to impact or rapid loading, it was determined that air was the most effective medium for quenching mild steel that had been welded, diesel oil came in second, followed by water, and brine solution took the third place. In general air was the best medium. The findings will make it easier for researchers and welding specialists to choose the quenchant that is both the best and the most affordable option for quenching welded components or parts composed of mild steel that are subjected to impact or shock stresses.