Experimental investigation of microstructure and mechanical properties of IS2602-EN31 MIG welded joint

Abstract

In this paper, Experimental investigation is carried out on IS2062-EN31 dissimilar MIG weldments and influence of different heat inputs on the properties different zones of welded structures. Low heat input (5.7238 kJ/mm), high heat input (6.714 kJ/mm) conditions are selected and with help of these heats input conditions made of 8 mm thickness defect free weldments are prepared. It is found that the joint fabricated at a low heat input condition showing excellent metallurgical and mechanical properties. Both Mechanical and metallurgical properties of the joint improved with low heat input condition, fine grain size was measured with at welded zone and it decreased. Tensile and hardness is improved due to grain size was observed to be Eight with high and Nine low heat input condition.