INDUCTION HEATING ASSISTED FRICTION STIR WELDING OF LOW CARBON STEEL

Abstract

In this study Friction stir welding of low carbon steel is done with and without using induction preheating. It was revealed that due to localised heating the soundness of the weld joint is improved. Microstructural characterization and mechanical properties of the welded joint with preheating were evaluated and compared with the properties of the weld joint without preheating. It was revealed that due to preheating the average grain size increased. In addition formation of martensite can also be prevented. The details of hardness and tensile strength were reported. It was also revealed that with the use of preheating, the number of welds produced before each tool regrinding is more as compared to without preheating.