Experimental investigation of mechanical property (tensile strength) optical investigation (sem & edax) of austenitic stainless steel grade (aisi 304l& aisi 310) with gas metal arc welding (gmaw).

TLDR: In this paper, the influence of wire speed and current on tensile strength and optical investigation of welded stainless steel with gas metal arc welding (GMAW) was investigated.

Abstract: The objective of this research is to study the influence parameters affecting the mechanical property (tensile strength) and optical investigation (SEM & EDAX) of austenitic stainless steel grade (AISI-304L& AISI-310) with Gas Metal Arc Welding (GMAW). The research was applying the different values of wire speed and current for experiment, which have following interested parameters: welding current at (180, 250 and 320 Amps), welding wire speeds at (2, 3, 5 m/min), shield gas pure CO₂ and (24V)Welding Voltage. The study was done in following aspects: tensile strength and optical investigation. A research study investigate the tensile strength of welding joint is maximum 320.4 N/mm² at wire speed 3m/min and 250 Amps welding current. It has been observed from the SEM analysis that grain of the surface are ultra fine and EDAX analysis conforms the change of chemical composition is small at wire speed 3m/min and 250 Amps welding current.