Influence of Heat Input and PWHT on the Microstructure and Mechanical Properties in Dissimilar (IS2062-EN8) Welded Joints

Abstract

In the research work we evaluated the effect of heat input and PWHT on dissimilar metal joints influencing their mechanical properties and microstructure. Dissimilar metal joints of Mild steel and EN8 are prepared by using MIG welding process. This melting is possible because a sufficient amount of energy transferred per unit time and energy density is supplied to the wire.Tensile strength, impact, hardness was tested and Microstructure was studied. The heat input transferred along the transverse length of the welded joint will affect the entire weldment zone. Across the traverse length the hardness values are used to identify different zones of the welded joint. This heat input is varied with input parameters such as voltage, current and speed of wire. In the present research work heat input is considered as low and high heat input cases. The microstructure and the mechanical properties at different zones of each plate of weldment with low and high heat input cases are analysed with out and with post weld heat treatment.

Fuzzy Analytic Hierarchy Process and Markov Chain-WSM/WPM/WASPAS Approaches to solving the Surface Roughness Problem in the Boring of Carbon Steel IS 2062 GR E250 Plates on CNC Machines

“…But whether boring or welding activities are considered, many of the papers are associated with the industries mentioned earlier in this section. Manufacturers are interested in these plates because of their attractive corroding resistance and rustproof finish attributes among others (Chennaiah et al, 2016b;Srivastava and Garg, 2017). However, they have a significant shortcoming during boring activities (Chern and Liang, 2007;Patel and Deshpande, 2014;Vaishnav and Sonawane, 2014;Hintze et al, 2018;Kumar et al, 2018;Izelu et al, 2019;Biju and Shunmugam, 2019;Liu et al, 2019;Klein et al, 2020;Lotfi et al, 2020;Lawrance et al, 2020a,b).…”

Variation of Microstructural and Mechanical Properties With Respect to Polarity in Shielded Metal Arc Welding of Mild Steel

“…IS2062 mild steel and EN8 has been taken as workpiece materials for dissimilar metal joining in metal inert gas welding. The authors analysed different mechanical properties and microstructure of welded specimen with low and high heat inputs as well as with and without post weld heat treatment (Chennaiah et al, 2016). In this work, the authors have been chosen IS 2062 E250 grade steel as work specimen for investigation of different responses like yield strength and tensile strength by taking the welding current, feed rate, number of welding passes as input parameters.…”