Experimental analysis of dissimilar metal weld joint: Ferritic to austenitic stainless steel

Rathod, Dinesh W.; Pandey, Sunil; Singh, Pawan Kumar; Prasad, R Raghu

doi:10.1016/j.msea.2015.05.011

Cited by 68 publications

(26 citation statements)

References 18 publications

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“…The reformed martensite [11,12,32] fraction will remain in HAZ of ferritic steel which was auto-tempered due to multipass buttering procedure. The hardness profiles from SA508 ferritic steel to Inconel 182 buttering (second layer) through HAZ, interfaces and buffer layer are shown in Fig.…”

Section: Microhardness Variations Across the Interfacesmentioning

confidence: 99%

“…The as-received microstructure of SA508 ferritic steel is fully bainitic [11] with *25 lm grain size. The coarse grain HAZ (CGHAZ) grain size (*15-20 lm) observed to be marginally smaller than base metal due to grain refinement caused by multipass buttering procedure and that can be seen in Fig.…”

Section: Weldment Microstructurementioning

confidence: 99%

“…Unfortunately, the carbon diffusion is not completely arrested yet using Ni-base fillers [1,6,8,[10][11][12][13][14][15] as the significant amount of carbide formers (Cr, Nb, Ti) exists in Inconel 82/182 fillers [11,13,14,16,17]. Effect of carbide formers in buttering using Inconel 82 fillers for the carbon diffusion and metallurgical deterioration has been investigated in previous study [16] using buffer layer (Ni-Fe alloy) free of carbide formers adjacent to ferritic steel.…”

Section: Introductionmentioning

confidence: 99%

“…Subsequent buttering on buffer layer was made with low heat input gas metal arc welding (GMAW) [16]. Presence of carbide formers in considerable fractions in Inconel 82/182 buttering adjacent to SA508Gr.3cl.1 cannot ascertain the complete holdup to carbon diffusion [1,6,8,11,15,17] and subsequent metallurgical deterioration [18] in terms of martensite and undesirable phase formation. Therefore, the effect of graded composition [16,17,19] using Ni-Fe alloy as intermediate buffer layer on ferritic steel with subsequent buttering using shielded metal arc welding (SMAW) was investigated.…”

Section: Introductionmentioning

confidence: 99%

“…The SMAW process is well known for cheaper, faster, and high dilution against the traditionally preferred GTAW. Most of DMWs have performed almost 33-40% of their designed life [1,9,11,20] due to several failure mechanisms of which carbon migration and metallurgical deteriorations are addressed here. Control of carbon migration and metallurgical deterioration can facilitate to increase the designed service life of DMWs.…”

Section: Introductionmentioning

confidence: 99%

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Diffusion Control and Metallurgical Behavior of Successive Buttering on SA508 Steel Using Ni–Fe Alloy and Inconel 182

Rathod

Pandey

Aravindan

et al. 2016

Metallogr. Microstruct. Anal.

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The metallurgical deterioration and carbon diffusion caused during welding in the vicinity of the fusion interfaces between dissimilar metals have been investigated in case of gas tungsten arc and shielded metal arc welded SA508Gr.3Cl.1 steel substrate with Ni-Fe alloy and Inconel 182. The study was conducted to investigate the effect of Ni-Fe matrix as buffer layer and SMAW process for buttering deposition on the carbon diffusion and metallurgical changes. Quantitative measurement and validation of carbon/alloying elements distribution in as-welded, thermally aged, and postweld heat-treated conditions were performed in buttering deposits by using optical emission spectrometry and electron probe microanalysis. The extent of carbon diffusion has been estimated using Groube's diffusion couple and confirmed with microstructure microhardness and X-ray diffraction. Martensite formation has been estimated for its thickness and validated with metallurgical properties. The effect of buffer layer is significant for carbon diffusion and tempering of martensite with thermal aging, PWHT, and multipass deposition. The concentration and activity gradient of carbon has been established due to Ni-Fe matrix as buffer layer and higher dilution for buttering. The obtained results are confirming the control of carbon diffusion and lesser metallurgical deterioration in suggested buttering procedure.

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Section: Microhardness Variations Across the Interfacesmentioning

confidence: 99%

Section: Weldment Microstructurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Diffusion Control and Metallurgical Behavior of Successive Buttering on SA508 Steel Using Ni–Fe Alloy and Inconel 182

Rathod

Pandey

Aravindan

et al. 2016

Metallogr. Microstruct. Anal.

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Microstructure and Corrosion Behavior of Functionally Graded Wire Arc Additive Manufactured Steel Combinations

Pütz

Pratesa

Oster

et al. 2021

steel research int.

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Influence of Strength Mismatch on Microstructural Evolution and Mechanical Behaviors for Q390/Q690 Ferritic Steel Dissimilar Welded Joints

Zhang

Lan

Shao

2022

steel research int.

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For the structural integrity of weldments, it is necessary to ascertain acceptable strength mismatch mode when dissimilar parent materials are welded together. Herein, multilayer and multi‐pass CO2 gas shielded welding is carried out to manufacture two dissimilar welded joints of Q390 and Q690 steels using two filler materials with different strength levels. A comparative assessment of both strength mismatch modes is done based on microstructural characterization and mechanical testing. The results show that the weld metal (WM) with predominantly fine acicular ferrite (about 80 pct) and granular bainite has a more excellent combination of strength and toughness compared to the WM mainly composed of polygonal ferrite and degenerated pearlite, and the weakest link of the welded joint has transferred from the WM to the Q390‐side heat‐affected zone. The acceptable strength mismatch relationship of the dissimilar welded structures is revealed, e.g., the hardness in the welded joint should present a uniform gradient distribution. Herein, the gradient difference in the equivalent yield strength (calculated from their hardness) between adjacent areas is ≈170 MPa.

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Experimental analysis of dissimilar metal weld joint: Ferritic to austenitic stainless steel

Cited by 68 publications

References 18 publications

Diffusion Control and Metallurgical Behavior of Successive Buttering on SA508 Steel Using Ni–Fe Alloy and Inconel 182

Diffusion Control and Metallurgical Behavior of Successive Buttering on SA508 Steel Using Ni–Fe Alloy and Inconel 182

Microstructure and Corrosion Behavior of Functionally Graded Wire Arc Additive Manufactured Steel Combinations

Influence of Strength Mismatch on Microstructural Evolution and Mechanical Behaviors for Q390/Q690 Ferritic Steel Dissimilar Welded Joints

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