Microstructure and Mechanical Properties of Combined GTAW and SMAW Dissimilar Welded Joints between Inconel 718 and 304L Austenitic Stainless Steel
Abstract
:1. Introduction
2. Materials and Methods
2.1. Welding Details
2.2. Metallographic and Mechanical Characterization
3. Results and Discussion
3.1. Interface and Heat-Affected Zone
3.2. Inconel 182 Filler Weld
3.3. Mechanical Testing
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Welding passes | Welding Process | Filler Metal | Welding Current (A) | Arc Voltage (V) | Welding Speed (mm/s) | Heat Input for Each Pass (kJ/mm) | Total Heat Input (kJ/mm) |
---|---|---|---|---|---|---|---|
Root pass | GTAW | ERNiCr-3 | ~115 | ~9.8 | 1.67 | 0.404 | 0.404 |
Filling passes 1 | SMAW | ENiCrFe-3 | ~90 | ~6.8 | 3.00 | 0.163 | 0.775 |
Filling passes 2 | SMAW | ENiCrFe-3 | ~90 | ~6.8 | 2.37 | 0.206 | |
Filling passes 3 | SMAW | ENiCrFe-3 | ~90 | ~6.8 | 2.05 | 0.238 | |
Filling passes 4 | SMAW | ENiCrFe-3 | ~90 | ~7.0 | 3.00 | 0.168 | |
Backing pass | GTAW | ERNiCr-3 | ~100 | ~7.5 | 3.00 | 0.150 | 0.150 |
Tensile Test | Ultimate Tensile Strength (MPa) | Elongation (%) | Fracture Location | |
---|---|---|---|---|
Room-temperature tensile test | Test coupon 1 | 474 | 17 | Weld metal |
Test coupon 2 | 551 | 27 | Weld metal | |
High-temperature tensile test (600 °C) | Test coupon 1 | 377 | 24 | 304L SS BM |
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Sirohi, S.; Pandey, S.M.; Świerczyńska, A.; Rogalski, G.; Kumar, N.; Landowski, M.; Fydrych, D.; Pandey, C. Microstructure and Mechanical Properties of Combined GTAW and SMAW Dissimilar Welded Joints between Inconel 718 and 304L Austenitic Stainless Steel. Metals 2023, 13, 14. https://doi.org/10.3390/met13010014
Sirohi S, Pandey SM, Świerczyńska A, Rogalski G, Kumar N, Landowski M, Fydrych D, Pandey C. Microstructure and Mechanical Properties of Combined GTAW and SMAW Dissimilar Welded Joints between Inconel 718 and 304L Austenitic Stainless Steel. Metals. 2023; 13(1):14. https://doi.org/10.3390/met13010014
Chicago/Turabian StyleSirohi, Sachin, Shailesh M. Pandey, Aleksandra Świerczyńska, Grzegorz Rogalski, Naveen Kumar, Michał Landowski, Dariusz Fydrych, and Chandan Pandey. 2023. "Microstructure and Mechanical Properties of Combined GTAW and SMAW Dissimilar Welded Joints between Inconel 718 and 304L Austenitic Stainless Steel" Metals 13, no. 1: 14. https://doi.org/10.3390/met13010014