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Severe Hot Corrosion of the Superalloy IN718 in Mixed Salts of Na2SO4 and V2O5 at 700 °C

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Abstract

This study presents hot corrosion behavior of the superalloy IN718 in 100 wt.% NaCl (salt S) and in salt mixtures of 60 wt.% Na2SO4 + 40 wt.% V2O5 (SM1) and 75 wt.% Na2SO4 + 15 wt.% NaCl + 10 wt.% V2O5 (SM2), deposited separately by spray gun technique, at elevated temperature of 700 °C. The weight gain per unit area at 700 °C was increased by 49% for salt S, 153% for the dual salt mixture SM1, and only 8% for the triple salt mixture SM2, in comparison with that observed earlier at 600 °C. The marked increase in the severity of corrosion at 700 °C is attributed to formation of the highly damaging compound NaVO3 that significantly enhances the oxygen activity, in the SM1 coated samples. The effect of surface roughness and dislocation density on corrosion behavior at 700 °C, however, is found to be similar to that at 600 °C. Ultrasonic shot peening, a novel technique of surface modification, is found to enhance the hot corrosion resistance in the salt mixture SM1 at 700 °C appreciably due to extensive grain refinement to nanoscale and formation of highly protective Cr2O3 layer in the surface region.

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References

  1. M. Sundararaman, P. Mukhopadhyay, and S. Banerjee, Precipitation of the δ-Ni3Nb Phase in Two Nickel Base Superalloys, Met. Trans A, 1988, 19(3), p 453–465

    Article  Google Scholar 

  2. J.P. Collier, S.H. Wong, J.K. Tien, and J.C. Phillips, The Effect of Varying AI, Ti, and Nb Content on the Phase Stability of Inconel 718, Met. Mater. Trans. A, 1988, 19(7), p 1657–1666

    Article  Google Scholar 

  3. G.Y. Lai, High-Temperature Corrosion and Materials Applications, 1st ed., U.S.A, ASM International, 2007

    Google Scholar 

  4. N. Eliaz, G. Shemshand, and R.M. Latanision, Hot Corrosion in Gas Turbine Components, Eng. Fail. Anal., 2002, 9, p 31–43

    Article  Google Scholar 

  5. G.S. Mahobia, N. Paulose, S.L. Mannan, R.G. Sudhakar, K. Chattopadhyay, N.C.S. Srinivas, and V. Singh, Effect of Hot Corrosion on Low Cycle Fatigue Behavior of Superalloy IN718, Int. J. Fatigue, 2014, 59, p 272–281

    Article  Google Scholar 

  6. V. Mannava, A.S. Rao, N. Paulose, M. Kamaraj, and R.S. Kottada, Hot Corrosion Studies on Ni-Base Superalloy at 650 °C Under Marine-Like Environment Conditions Using Three Salt Mixture (Na2SO4 + NaCl + NaVO3), Corr. Sci., 2016, 105, p 109–119

    Article  Google Scholar 

  7. F. Mansfeld, N.E. Paton, and W.M. Robertson, The High Temperature Behavior of Superalloys Exposed to Sodium Chloride: II, Corrosion, Met. Mater. Trans. B, 1973, 4(1), p 321–327

    Google Scholar 

  8. F. Saegusa and D.A. Shores, Corrosion Resistance of Superalloys in the range 800-1300 F (430-700 °C), J. Mater. Energy Syst., 1982, 4(1), p 16–27

    Article  Google Scholar 

  9. K.A. Ellison, P. Lowden, J. Liburdi, and D.H. Boone, Repair joints in nickel-based superalloys with improved hot corrosion resistance, International Gas Turbine and Aeroengine Congress and Exposition, Cincinnati, 1993, p 24–27

    Google Scholar 

  10. L. Jian, C.Y. Yuh, and M. Farooque, Oxidation Behavior of Superalloys in Oxidizing and Reducing Environments, Corr. Sci., 2000, 42(9), p 1573–1585

    Article  Google Scholar 

  11. S. Prakash, D. Puri, and H. Singh, Hot Corrosion Behaviour of Plasma Sprayed Coatings on a Ni-Based Superalloy in Na2SO4-60% V2O5 Environment, ISIJ Int., 2005, 45(6), p 886–895

    Article  Google Scholar 

  12. T.S. Sidhu, S. Prakash, and R.D. Agrawal, Characterisations of HVOF Sprayed NiCrBSi Coatings on Ni-and Fe-Based Superalloys and Evaluation of Cyclic Oxidation Behaviour of Some Ni-Based Superalloys in Molten Salt Environment, Thin Solid Films, 2006, 515(1), p 95–105

    Article  Google Scholar 

  13. T.S. Sidhu, S. Prakash, and R.D. Agrawal, Study of Molten Salt Corrosion of High Velocity Oxy-Fuel Sprayed Cermet and Nickel-Based Coatings at 900 °C, Met. Mater. Trans. A, 2007, 38(1), p 77–85

    Article  Google Scholar 

  14. S.H. Cho, I.J. Cho, G.S. You, J.S. Yoon, and S.W. Park, Corrosion Behavior of Ni-Base Alloys in a Hot Lithium Molten Salt Under an Oxidizing Atmosphere, MMI, 2007, 13(4), p 303–309

    Google Scholar 

  15. S. Kamal, R. Jayaganthan, S. Prakash, and S. Kumar, Hot Corrosion Behavior of Detonation Gun Sprayed Cr3C2-NiCr Coatings on Ni and Fe-Based Superalloys in Na2SO4-60% V2O5 Environment at 900 °C, J. Alloys Compd., 2008, 463(1), p 358–372

    Article  Google Scholar 

  16. L. Xueming, S. Wenru, G. Shouren, and H. Zhuangqi, Hot Corrosion Behavior of IN718 Alloy and Its Effect on Mechanical Properties, Rare Met. Mater. Eng., 2008, 2, p 016

    Google Scholar 

  17. G. Sreedhar, M.D.M. Alam, and V.S. Raja, Hot Corrosion Behaviour of Plasma Sprayed YSZ/Al2O3 Dispersed NiCrAlY Coatings on Inconel-718 Superalloy, Surf. Coat. Tech., 2009, 204(3), p 291–299

    Article  Google Scholar 

  18. G. Sreedhar and V.S. Raja, Hot Corrosion of YSZ/Al2O3 Dispersed NiCrAlY Plasma-Sprayed Coatings in Na2SO4–10 wt.% NaCl Melt, Corr. Sci., 2010, 52(8), p 2592–2602

    Article  Google Scholar 

  19. S. Kamal, R. Jayaganthan, and S. Prakash, High Temperature Cyclic Oxidation and Hot Corrosion Behaviours of Superalloys at 900 °C, Bull. Mater. Sci., 2010, 33(3), p 299–306

    Article  Google Scholar 

  20. J.L. Trinstancho-Reyes, M. Sanchez-Carrillo, R. Sandoval-Jabalera, V.M. Orozco-Carmona, F. Almeraya-Calderon, J.G. Chacon-Nava, J.G. Gonzalez-Rodriguez, and A. Martinez-Villafane, Electrochemical Impedance Spectroscopy Investigation of Alloy Inconel-718 in Molten Salts at High Temperature, Int. J. Electrochem. Sci., 2011, 6, p 419–431

    Google Scholar 

  21. A. Rahman, V. Chawla, R. Jayaganthan, R. Chandra, and R. Ambardar, Study of Cyclic Hot Corrosion of Nanostructured Cr/Co-Al Coatings on Superalloy, Mater. Chem. Phys., 2011, 126(1), p 253–261

    Article  Google Scholar 

  22. W. Garkas, S. Weiß, and Q.M. Wang (Cr1−xAlx)N as a Candidate for Corrosion Protection in High Temperature Segments of CCS Plants, Environ. Earth Sci., 2013, 70(8), p 3761–3770

    Article  Google Scholar 

  23. S. Saladi, J. Menghani, and S. Prakash, Hot Corrosion Behaviour of Detonation-Gun Sprayed Cr3C2-NiCr Coating on Inconel-718 in Molten Salt Environment at 900 °C, Trans. IIM, 2014, 67(5), p 623–627

    Google Scholar 

  24. A. Ajay, V.S. Raja, G. Sivakumar, and S.V. Joshi, Hot Corrosion Behavior of Solution Precursor and Atmospheric Plasma Sprayed Thermal Barrier Coatings, Corr. Sci., 2015, 98, p 271–279

    Article  Google Scholar 

  25. C.J. Wang and Y.C. Chang, NaCl-Induced Hot Corrosion of Fe-Mn-Al-C Alloys, Mater. Chem. Phys., 2002, 76(2), p 151–161

    Article  Google Scholar 

  26. T.S. Sidhu, A. Malik, S. Prakash, and R.D. Agrawal, Cyclic Oxidation Behavior of Ni-and Fe-Based Superalloys in Air and Na2SO4-25% NaCl Molten Salt Environment at 800 °C, Int. J. Phys. Sci., 2006, 1(1), p 027–033

    Google Scholar 

  27. H. Singh, D. Puri, and S. Prakash, An Overview of Na2SO4 and/or V2O5 Induced Hot Corrosion of Fe-and Ni-Based Superalloys, Rev. Adv. Mater. Sci., 2007, 16(1), p 27–50

    Google Scholar 

  28. R.A. Rapp, Hot Corrosion of Materials: A Fluxing Mechanism, Corr. Sci., 2002, 44(2), p 209–221

    Article  Google Scholar 

  29. J.R. Nicholls, Designing Oxidation-Resistant Coatings, JOM, 2000, 52(1), p 28–35

    Article  Google Scholar 

  30. M.Y. Nazmy, The Effect of Environment on the High Temperature Low Cycle Fatigue Behaviour of Cast Nickel-Base IN-738 Alloy, Mater. Sci. Eng., 1982, 55(2), p 231–237

    Article  Google Scholar 

  31. M.Y. Nazmy, Effect of Room Temperature Prestrain and Subsequent Heat Treatment on the Creep Life of a Ni-Base Superalloy, Scripta Met., 1982, 16(12), p 1329–1332

    Article  Google Scholar 

  32. M. Yoshiba, Effect of Hot Corrosion on the Mechanical Performances of Superalloys and Coating Systems, Corr. Sci., 1993, 35(5), p 1115–1124

    Article  Google Scholar 

  33. R. Walter and M.B. Kannan, Influence of Surface Roughness on the Corrosion Behaviour of Magnesium Alloy, Mater. Des., 2011, 32(4), p 2350–2354

    Article  Google Scholar 

  34. D. Pradhan, G.S. Mahobia, K. Chattopadhyay, and V. Singh, Effect of Surface Roughness on Corrosion Behavior of the Superalloy IN718 in Simulated Marine Environment, J Alloys Compd., 2018, 740, p 272–281

    Article  Google Scholar 

  35. S. Kumar, G.S. Rao, K. Chattopadhyay, G.S. Mahobia, N.S. Srinivas, and V. Singh, Effect of Surface Nanostructure on Tensile Behavior of Superalloy IN718, Mater. Des., 2014, 62, p 76–82

    Article  Google Scholar 

  36. A. Sanda, V. García Navas, and O. Gonzalo, Surface State of Inconel 718 Ultrasonic Shot Peened: Effect of Processing Time, Material and Quantity of Shot Balls and Distance from Radiating Surface to Sample’, Mater. Des., 2011, 32(4), p 2213–2220

    Article  Google Scholar 

  37. L. Tan, X. Ren, K. Sridharan, and T.R. Allen, Effect of Shot-Peening on the Oxidation of Alloy 800H Exposed to Supercritical Water and Cyclic Oxidation, Corr. Sci., 2008, 50, p 2040–2046

    Article  Google Scholar 

  38. X.Y. Zhang, M.H. Shi, C. Li, N.F. Liu, and Y.M. Wei, The Influence of Grain Size on the Corrosion Resistance of Nanocrystalline Zirconium Metal, Mater. Sci. Eng., A, 2007, 448, p 259–263

    Article  Google Scholar 

  39. S. Kumar, K. Chattopadhyay, G.S. Mahobia, and V. Singh, Hot Corrosion Behaviour of Ti-6Al-4V Modified by Ultrasonic Shot Peening, Mater. Des., 2016, 110, p 196–206

    Article  Google Scholar 

  40. G. Dini, R. Ueji, and A. Najafizadeh, Flow Stress Analysis of TWIP Steel Via the XRD Measurement of Dislocation Density, Mater. Sci., 2010, 527, p 2759–2763

    Google Scholar 

  41. J.I. Langford and A.J.C. Wilson, Scherrer After Sixty Years: A Survey and Some New Results in the Determination of Crystallite Size, J. App. Cryst., 1978, 11(2), p 102–113

    Article  Google Scholar 

  42. G. Williamson and W. Hall, X-ray Line Broadening from Filed Aluminium and Wolfram, Acta Metall., 1953, 1, p 22–31

    Article  Google Scholar 

  43. N.B. Pilling and R.E. Bedworth, The Oxidation of Metals at High Temperatures, J. Inst. Met., 1923, 29, p 529–591

    Google Scholar 

  44. A.S. Khanna, Introduction to High Temperature Oxidation and Corrosion, ASM International, Russell Township, 2002

    Google Scholar 

  45. W. Ozgowicz, A. Kurc-Lisiecka, and A. Grajcar, Corrosion Behaviour of Cold-Deformed Austenitic Alloys, Environmental and Industrial Corrosion-Practical and Theoretical Aspects, InTech, London, 2012

    Google Scholar 

  46. S.J. Balsone, The Effect of Stress and Hot Corrosion on Nickel-Base Superalloys, Air Force Institute of Technology, Wright-Patterson Air Force Base, 1985

    Google Scholar 

  47. P.S. Sidky and M.G. Hocking, The Hot Corrosion of Ni-Based Ternary Alloys and Superalloys for Application in Gas Turbines Employing Residual Fuels, Corr. Sci., 1987, 27(5), p 499–530

    Article  Google Scholar 

  48. E. Otero, M.C. Merino, A. Pardo, M.V. Biezma, and G. Buitrago, Study on Corrosion Products of IN657 Alloy in Molten Salts, Key Eng. Mater., 1987, 20(4), p 3583–3591

    Google Scholar 

  49. C. Cuevas-Arteaga, Corrosion Study of HK-40 m Alloy Exposed to Molten Sulfate/Vanadate Mixtures Using the Electrochemical Noise Technique, Corr. Sci., 2008, 50, p 650–663

    Article  Google Scholar 

  50. J. Porcayo-Calderon, V.M. Salinas Bravo, R.A. Rodriguez-Diaz, and L. Martinez-Gomez, Effect of the NaVO3-V2O5 Ratio on the High Temperature Corrosion of Chromium, Int. J. Electrochem. Sci., 2015, 10, p 4928–4945

    Google Scholar 

  51. M.S. Doolabi, B. Ghasemi, S.K. Sadrnezhaad, A. Habibollahzadeh, and K. Jafarzadeh, Hot Corrosion Behavior and Near-Surface Microstructure of a Low-Temperature High-Activity Cr-Aluminide Coating on Inconel 738LC Exposed to Na2SO4, Na2SO4 + V2O5 and Na2SO4 + V2O5 + NaCl at 900 °C, Corr. Sci., 2017, 128, p 42–53

    Article  Google Scholar 

  52. H. Matsuo, Y. Nishiyama, and Y. Yamadera, Steam oxidation properties of fine grain steels, in: Proceedings from the Fourth International Conference on Advances in Materials Technology of Fossil Power Plants, Hilton Head Island, South Carolina, 25–28 October 2004.

  53. Z.B. Wang, N.R. Tao, W.P. Tong, J. Lu, and K. Lu, Diffusion of Chromium in Nanocrystalline Iron Produced by Means of Surface Mechanical Attrition Treatment, Acta Mater., 2003, 51, p 4319–4329

    Article  Google Scholar 

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Acknowledgments

The authors are thankful to Prof. N V C Rao and Dr. Dinesh Pandit, Department of Geology, Institute of Science, B.H.U., Varanasi for providing EPMA facility.

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  1. Department of Metallurgical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India

    Dhananjay Pradhan, Girija Shankar Mahobia, Kausik Chattopadhyay & Vakil Singh

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  1. Dhananjay Pradhan
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Correspondence to Dhananjay Pradhan.

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Pradhan, D., Mahobia, G.S., Chattopadhyay, K. et al. Severe Hot Corrosion of the Superalloy IN718 in Mixed Salts of Na2SO4 and V2O5 at 700 °C. J. of Materi Eng and Perform 27, 4235–4243 (2018). https://doi.org/10.1007/s11665-018-3501-9

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