Abstract
Dissimilar joint commonly applied on pressure vessel application in power plan field as joining between the tank and the stanchion of pressure vessel. This paper presents the investigations carried out to study the influence of groove angles and filler metals on 304L Stainless Steel to AISI 1040 Carbon Steel dissimilar joints. Gas Tungsten Arc Welding with 120 A of current was used on this research, joined the two different metals. The 30°, 45°, and 60° were used in this welding as parameters of V-groove angles. ER 308L-16 filler metal of stainless steel and ER 70S-6 filler metal of carbon steel were used as filler metals. Tensile test was conducted to obtain tensile strength of joint and to analysis of the effect of the welding parameters to the mechanical properties. The highest tensile strength was obtained from the 60° groove angle using ER 308L-16 filler metal of 614.54 MPa. In the other hand, 45° groove angle using ER 70S-6 filler metal obtained the lowest tensile strength of 578.66 MPa. The joining process of dissimilar welding using ER 308L-16 filler metal, filler metal for stainless steel, has obtained the highest tensile strength with wider groove angle as well.
Highlights
Joining of dissimilar metal combinations are employed in different applications requiring a certain special combination of properties as well as to save cost incurred towards costly and scarce materials [1]
This paper presents the studies on AISI 304L and AISI 1040 dissimilar metal welded by Gas Tungsten Arch Welding (GTAW)
Microstructure of dissimilar welding 304L stainless steel to AISI 1040 carbon steel was observed under the optical microscope to study the differences of weld metal, HAZ, and weld metal region and the phases forming for each filler metals parameters
Summary
Joining of dissimilar metal combinations are employed in different applications requiring a certain special combination of properties as well as to save cost incurred towards costly and scarce materials [1]. Stainless steel 304L has lower carbon than stainless steel 304, stainless steel 304L is easier to be welded This property of ASS 304L is due to the. It has a low carbon content due to which the wear and friction properties are improved and lower susceptibility to intergranular corrosion [4, 5]. In a nuclear water reactor, dissimilar metal welds are employed to connect the low alloy steel reactor pressure vessel and stainless steel pipe systems [6, 7]. The 304L Stainless Steel and AISI 1040 carbon steel were welded by GTAW with 120 A of current and V-groove joining with various angle parameters. The research was conducted on mechanical property of joining using tensile test and microstructure characterization
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