The Effect of Welding Parameters on Joining Dissimilar Low Carbon Steel and 3CR12 Ferritic Stainless Steel by GTAW with ER308L Filler Metal

Luijan, Jinkamon; Surin, Prayoon; Eidhed, Krittee

doi:10.1088/1742-6596/1519/1/012010

Cited by 1 publication

(2 citation statements)

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“…From the macrographs in figures 5(a) and (b), the dilution can be calculated using equation (1). We found a dilution percentage of about 21%dilution for 70A-ER308L specimen and 23%dilution for 100A-ER308L specimen [26]. These correspond to normal dilution percentages with the previous theory of Lippoldand Kotecki [27].…”

Section: Materials and Experimental Proceduressupporting

confidence: 72%

“…Studies by Araújo et al [40] and Bansod et al [41] reported hardness values in the fusion zone with ER308L and 308 filler wires, which presented results similar to those verified in the present work. Hardness values of approximately 175, 182, and 180 HV of the 70A-ER308L fusion zone [26] were higher than those of the 70A-ER309L and 100A-ER309L fusion zones. According to the higher hardness of 70A-ER308L, the solid solution from both sides of the base metal diffused the interstitial solute atoms into a delta ferrite structure.…”

Section: Hardness and Tensile Propertiesmentioning

confidence: 66%

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Investigation of ER308L and ER309L filler wires on dissimilar metals between carbon steel and 3CR12 ferritic stainless steel by GTAW through boiler fabrication in a sugar factory

Luijan,

Surin,

Eidhed

2023

Mater. Res. Express

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Dissimilar metal welding is a popular process in very large coal and gold, power generation, and pulp and paper factories. It has mainly been applied to produce large boilers in sugar factories. The aim of the present study was to examine the characteristics of dissimilar metal welded joints made from carbon steel and 3CR12 ferritic stainless steel. The welding specimen was made from filler wires of ER308L and ER309L, and a gas tungsten arc welding process was employed for the V-shaped butt weld joints. The effects of the process parameters, such as the microstructural characteristics and mechanical properties, were investigated. The results from the welding parameters with filler wire of ER308L applied at 70A of welding current showed the microstructure of delta ferrite and austenite. In comparison, 100A of welding current presents delta ferrite, austenite, and martensite. Furthermore, carbide formation was not observed in the fusion zones of any of the experiments. When the ER308L filler wire was used, the amount of delta ferrite was higher than that of the ER309L filler wire, and the amount of delta ferrite increased with increasing hardness. In addition, the results of the filler wire of ER308L could replace the ER309L filler wire, which effectively reduces the material cost.

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Section: Materials and Experimental Proceduressupporting

confidence: 72%