Study on the Variation in Mechanical Properties along the Dissimilar Weldments of P22 and P91 Steel
Source abstract
Abstract
The aim of the present work was to examine the microstructure and mechanical aspects of the Gas Tungsten Arc Welded dissimilar joint of P22 and P91 steel in as-welded (AW) and post-weld heat-treatment (PWHT) conditions. The weldments' optical and scanning electron microscopy characterization showed the heterogeneous microstructure formation along the weldments, which led to the variation in mechanical properties. After the PWHT, a carbon depleted soft and carbon enriched hard zone was observed near the interface of P22 steel and weld metal (WM) due to the diffusion of the carbon elements across the interface. A variation in hardness was observed along the weldments, and maximum was measured in WM (430 HV) and CGHAZ (408 HV) and reduced as move from the WM to base metal. A significant reduction in hardness of WM (333 HV) and CGHAZ (308 HV) was measured after the PWHT. Tensile strength of AW and PWHT conditions was measured 611 ± 9 MPa and 650 ± 13 MPa, respectively, which was higher than the tensile strength of P22 steel. The tensile test of the welded joint showed the failure in P22 steel base metal in AW and in P22 HAZ after PWHT, which indicates that welded joint is stronger than the base material. The impact toughness results also showed that the variation along the weldments and minimum impact toughness was measured 41 J in WM, which was lower than the impact toughness of the P22 and P91 base metal. The poor impact toughness of the WM was attributed to the untempered martensitic microstructure present in WM. In AW condition, maximum impact toughness of 184 J was measured in P22 HAZ; however, it was lower than the P22 base metal. The PWHT showed a significant increase in impact toughness of the WM and HAZ of P22 and P91 steel.
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Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Metal Alloys Wear and Properties · Microstructure and Mechanical Properties of Steels
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References (20)
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1. S. Kumar, C. Pandey and A. Goyal, Role of Dissimilar IN617 Nickel Alloy Consumable on Microstructural and Mechanical Behavior of P91 Welds Joint, Arch. Civ. Mech. Eng., 2020, 20, p 99. https://doi.org/10.1007/s43452-020-00104-310.1007/s43452-020-00104-3 ↗
2. C. Sudha, V.T. Paul, A.L.E. Terrance, S. Saroja and M. Vijayalakshmi, Microstructure and Microchemistry of Hard Zone in Dissimilar Weldments of Cr-Mo Steels, Weld. J. (Miami, Fla), 2006, 85, p 71s–80s.
3. J. Akram, P.R. Kalvala, P. Chalavadi and M. Misra, Dissimilar Metal Weld Joints of P91/Ni Alloy: Microstructural Characterization of HAZ of P91 and Stress Analysis at the Weld Interfaces, J. Mater. Eng. Perform., 2018, 27, p 4115–4128. https://doi.org/10.1007/s11665-018-3502-810.1007/s11665-018-3502-8 ↗
4. S. Sirohi, C. Pandey and A. Goyal, Role of Heat-Treatment and Filler on Structure-Property Relationship of Dissimilar Welded Joint of P22 and F69 Steel, Fusion Eng. Des., 2020, 159, 111935. https://doi.org/10.1016/j.fusengdes.2020.11193510.1016/j.fusengdes.2020.111935 ↗
5. K. Laha, S. Latha, K. Bhanu Sankara Rao, S.L. Mannan and D.H. Sastry, Comparison of Creep Behaviour of 2·25Cr-1Mo/ 9Cr-1Mo Dissimilar Weld Joint with its Base and Weld Metals, Mater. Sci. Technol., 2001, 17, p 1265–1272. https://doi.org/10.1179/02670830110150918810.1179/026708301101509188 ↗
6. D. Sunilkumar, S. Muthukumaran, M. Vasudevan and G.M. Reddy, Microstructure and Mechanical Properties Relationship of Friction Stir- and A-GTA-Welded 9Cr-1Mo to 2.25Cr-1Mo Steel, J. Mater. Eng. Perform., 2021 https://doi.org/10.1007/s11665-020-05426-010.1007/s11665-020-05426-0 ↗
7. Y.Y. You, R.K. Shiue, R.H. Shiue and C. Chen, The Study of Carbon Migration in Dissimilar Welding of the Modified 9Cr-1Mo Steel, J. Mater. Sci. Lett., 2001, 20, p 1429–1432. https://doi.org/10.1023/A:101161623239610.1023/A:1011616232396 ↗
8. K. Laha, K.S. Chandravathi, K. Bhanu Sankara Rao, S.L. Mannan and D.H. Sastry, An Assessment of Creep Deformation and Fracture Behavior of 2.25Cr-1Mo Similar and Dissimilar Weld Joints, Metall Mater. Trans. A Phys. Metall. Mater. Sci., 2001, 32, p 115–124. https://doi.org/10.1007/s11661-001-0107-910.1007/s11661-001-0107-9 ↗
9. A. Kulkarni, D.K. Dwivedi and M. Vasudevan, Study of Mechanism, Microstructure and Mechanical Properties of Activated Flux TIG Welded P91 Steel-P22 Steel Dissimilar Metal Joint, Mater. Sci. Eng. A., 2018, 731, p 309–323. https://doi.org/10.1016/j.msea.2018.06.05410.1016/j.msea.2018.06.054 ↗
10. C. Sudha, A.L.E. Terrance, S.K. Albert and M. Vijayalakshmi, Systematic Study of Formation of Soft and Hard Zones in the Dissimilar Weldments of Cr-Mo Steels, J. Nucl. Mater., 2002, 302, p 193–205. https://doi.org/10.1016/S0022-3115(02)00777-810.1016/S0022-3115(02)00777-8 ↗
11. C.G. Panait, W. Bendick, A. Fuchsmann, A.F. Gourgues-Lorenzon and J. Besson, Study of the Microstructure of the Grade 91 Steel After more than 100,000 h of Creep Exposure at 600 °C, Int. J. Press. Vessel. Pip., 2010, 87, p 326–335. https://doi.org/10.1016/j.ijpvp.2010.03.01710.1016/j.ijpvp.2010.03.017 ↗
12. C. Pandey and M.M. Mahapatra, Effect of Groove Design and Post-Weld Heat Treatment on Microstructure and Mechanical Properties of P91 Steel Weld, J. Mater. Eng. Perform., 2016, 25, p 2761–2775. https://doi.org/10.1007/s11665-016-2127-z10.1007/s11665-016-2127-z ↗
13. C. Pandey and M.M. Mahapatra, Effect of Heat Treatment on Microstructure and Hot Impact Toughness of Various Zones of P91 Welded Pipes, J. Mater. Eng. Perform., 2016, 25, p 2195–2210. https://doi.org/10.1007/s11665-016-2064-x10.1007/s11665-016-2064-x ↗
14. C. Pandey, J.G. Thakare, P.K. Taraphdar, P. Kumar, A. Gupta and S. Sirohi, Characterization of the soft zone in dissimilar welds joint of 2.25Cr-1Mo and lean duplex LDX2101 steel, Fusion Eng. Des., 2021, 163, p 112147. https://doi.org/10.1016/j.fusengdes.2020.11214710.1016/j.fusengdes.2020.112147 ↗
15. S.K. Albert, T.P.S. Gill, A.K. Tyagi, S.L. Mannan, S.D. Kulkarni and P. Rodriguez, Soft Zone Formation in Dissimilar Welds Between Two Cr-Mo Steels, Weld. J. (Miami, Fla), 1997, 76, p 135-s.
16. J.G. Thakare, C. Pandey, M.M. Mahapatra and R.S. Mulik, An Assessment for Mechanical and Microstructure Behavior of Dissimilar Material Welded Joint Between Nuclear Grade Martensitic P91 and Austenitic SS304 L Steel, J. Manuf. Process., 2019, 48, p 249–259. https://doi.org/10.1016/j.jmapro.2019.10.00210.1016/j.jmapro.2019.10.002 ↗
17. C. Pandey, A. Giri and M.M. Mahapatra, Evolution of Phases in P91 Steel in Various Heat Treatment Conditions and their Effect on Microstructure Stability and Mechanical Properties, Mater. Sci. Eng. A., 2016, 664, p 58–74. https://doi.org/10.1016/j.msea.2016.03.13210.1016/j.msea.2016.03.132 ↗
18. N. Saini, R.S. Mulik and M.M. Mahapatra, Influence of Filler Metals and PWHT Regime on the Microstructure and Mechanical Property Relationships of CSEF Steels Dissimilar Welded Joints, Int. J. Press. Vessel. Pip., 2019, 170, p 1–9. https://doi.org/10.1016/j.ijpvp.2019.01.00510.1016/j.ijpvp.2019.01.005 ↗
19. B. Silwal, L. Li, A. Deceuster and B. Griffiths, Effect of Postweld Heat Treatment on the Toughness of Heat-Affected Zone for Grade 91 Steel, Weld. J., 2013, 92, p 80s–87s.
20. R.S. Vidyarthy, A. Kulkarni and D.K. Dwivedi, Study of Microstructure and Mechanical Property Relationships of A-TIG Welded P91–316L Dissimilar Steel Joint, Mater. Sci. Eng. A., 2017, 695, p 249–257. https://doi.org/10.1016/j.msea.2017.04.03810.1016/j.msea.2017.04.038 ↗