Share This Article:

Oxidation Behaviour of a Newly Developed Superalloy

Abstract Full-Text HTML Download Download as PDF (Size:1288KB) PP. 130-135
DOI: 10.4236/jsemat.2011.13020    4,673 Downloads   9,149 Views   Citations

ABSTRACT

The current paper explains the oxidation behaviour of a newly developed nickel-based superalloy in simulating aero gas turbine engine conditions. The results showed that the new superalloy is highly susceptible to high temperature oxidation. Within three of hours of oxidation, extensive oxide scales were formed. The formed oxide scales were ana-lysed with electron dispersive spectroscopy (EDS) and morphology was studied with scanning electron microscope (SEM) for varied oxidation times. The oxidation products were determined with XRD and cross sections of all the oxi-dised superalloys were also studied. The elemental distribution of all the superalloys after oxidation was also studied with a view to understand and compare the characteristics of the new superalloy with other superalloys. Finally, an oxidation mechanism that is responsible for its faster degradation under elevated temperatures was established based on the results obtained with different techniques and presented in detail.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

I. Yashwanth, I. Gurrappa and H. Murakami, "Oxidation Behaviour of a Newly Developed Superalloy," Journal of Surface Engineered Materials and Advanced Technology, Vol. 1 No. 3, 2011, pp. 130-135. doi: 10.4236/jsemat.2011.13020.

References

[1] N. Das, US patent 5,925,198, July 1999
[2] M. R. Khajavi and M. H. Shariat, “Failure of First Stage Gas Turbine Blades,” Engineering Failure Analysis, Vol. 11, No. 4, 2004, pp. 589-597. doi:10.1016/j.engfailanal.2003.08.010
[3] J. M. Gallardo, J. A. Rodrigue and E. J. Herrera, “Failure of Gas Turbine Blades,” Wear, Vol. 252, No. 3-4, 2002, pp. 264-268. doi:10.1016/S0043-1648(01)00885-7
[4] N. Eliaz, G. Shemesh and R. M. Latarision, “Hot Corro- sion in Gas Turbine Components,” Engineering Failure Analysis, Vol. 9, No. 1, 2002, pp. 31-43. doi:10.1016/S1350-6307(00)00035-2
[5] T. J. Carter, “Common Failures in Gas Turbine Blades,” Engineering Failure Analysis, Vol. 12, No. 2, 2005, pp. 237-247. doi:10.1016/j.engfailanal.2004.07.004
[6] R. Nutzel, E. Affeldt and M. Goken, “Damage Evolution during Thermo-Mechanical Fatigue of a Coated Mono- crystalline Nickel-Bas Superalloy,” International Journal of Fatigue, Vol. 30, No. 2, 2008, pp. 313-317. doi:10.1016/j.ijfatigue.2007.01.045
[7] R. S. J. Corran and S. J. Williams, “Lifing Methods and Safety Criteria in Aero Gas Turbines,” Engineering Failure Analysis, Vol. 14, No. 3, 2007, pp. 518-526. doi:10.1016/j.engfailanal.2005.08.010
[8] I. Gurrappa, “Hot Corrosion Behaviour of CM 247 LC Alloy in Na2SO4 and NaCl Environments,” Oxidation of Metals, Vol. 51, No. 5-6, 1999, pp. 353-382. doi:10.1023/A:1018831025272
[9] I. Gurrappa, “Hot Corrosion Behaviour of Nimonic-75,” Journal of High Temperature Materials Science, Vol. 38, 1997, pp. 1-9
[10] I. Gurrappa, “Influence of Alloying Elements on Hot Corrosion of Superalloys and Coatings-Necessity of Smart Coatings,” Materials Science and Technology, Vol. 19, 2003, pp. 178-183
[11] I. Gurrappa, “Overlay Coating Degradation an Electro-chemical Approach,” Journal of Materials Science Letters, Vol. 18, No. 21, 1999, pp. 1713-1717. doi:10.1023/A:1006694220055
[12] I. Gurrappa, “Identification of Hot Corrosion Resistant MCrAlY Based Bond Coatings for Gas Turbine Engine Applications,” Surface and Coating Technology, Vol. 139, No. 2-3, 2001, pp. 272-283. doi:10.1016/S0257-8972(00)01156-7
[13] I. Gurrappa, “Hot Corrosion Behaviour of Protectuve Coatings on CM 247 LC Superalloy,” Materials and Manufacturing Processes, Vol. 15, 2000, pp. 761-767
[14] I. Gurrappa and A. Sambasiva Rao, “Thermal Barrier Coatings for Enhanced Efficiency of Gas Turbine Engines,” Surface and Coating Technology, Vol. 201, 2006, pp. 3016- 3029
[15] R. Mevrel, “State of the Art on High Temperature Corr- osion Resistant Coatings,” Materials Science and Eng- ineering A, Vol. 120-121, 1989, pp. 13-24
[16] R. Mobarra, A. H. Jaffari and M. Karamirezhaad, “Hot Corrosion Behaviour of MCrAlY Coatings on IN 738LC,” Surface and Coating Technology, Vol. 201, 2006, pp. 2202- 2207
[17] M. M. Warres, “Improved Aluminide McrAlX Coating Systems for Superalloys using CVD low activity Alu- minizing,” Surface and Coating Technology, Vol. 163- 164, 2003, pp. 106-111
[18] I. Gurrappa, “Final Report on ‘Design and Development of Smart Coatings for Aerospace Applications’ Submitted to European Commission,” July 2008
[19] I. Gurrappa, “Identification of a Smart Bond Coating for Gas Turbine Engine Applications,” Coating Technology Research, Vol. 5, 2008, pp. 385-390

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.