Oxidation Behavior of a Disk Powder Metallurgy Superalloy

Abstract:

Article Preview

Oxidation behaviors of a spray-forming disk superalloy LSHR were investigated in the temperature range of 750-900°C. The composition and morphology of oxidation scales were investigated by X-ray diffraction (XRD), scanning electron microscopy equipped with energy dispersive spectroscopy (SEM-EDS), and electron probe microanalysis (EPMA). Oxidation kinetics was studied by the means of isothermal oxidation testing in air and weight gain measurement. The oxide scales were composed of Cr2O3, TiO2, Al2O3 and a small amount of NiCr2O4. The experiment results showed that oxidation kinetics and oxide layers followed a square power law as time extended from 750 to 900°C. With the oxidation temperature increasing, external scale thickness, and internal oxidation zone increased. The oxidation behavior was controlled by the diffusion of oxygen, chromium, titanium, and aluminum ions, as chromium, titanium, and aluminum ions diffused outward and oxygen diffused inward. Based on the standard HB5258-2000 spray-forming LSHR exhibited an excellent oxidation resistance in the whole test temperature range.

Info:

Periodical:

Edited by:

Yafang Han

Pages:

467-475

Citation:

K. X. Dong et al., "Oxidation Behavior of a Disk Powder Metallurgy Superalloy", Materials Science Forum, Vol. 898, pp. 467-475, 2017

Online since:

June 2017

Export:

Price:

$38.00

* - Corresponding Author

[1] Information on https: /ntrs. nasa. gov/search. jsp?R=20050186902.

[2] A. Leatham, Spray forming: alloys, products and markets, Met. Powder Rep., 54 (1999) 28-37.

[3] K. S. Chan, Roles of microstructure in fatigue crack initiation, Int. J. Fatigue, 32 (2010) 1428-1447.

DOI: https://doi.org/10.1016/j.ijfatigue.2009.10.005

[4] T. P. Gabb, J. Gayda, J. Telesman, L. J. Ghosn and A. Garg, Factors influencing dwell fatigue life in notches of a powder metallurgy superalloy, Int. J. Fatigue, 48 (2013) 55-67.

DOI: https://doi.org/10.1016/j.ijfatigue.2012.10.003

[5] R. Jiang, Study of fatigue crack initiation and propagation mechanisms in an advanced Ni-based superalloy: effects of microstructures and oxidation, (2015).

[6] J. Chen, P. Rogers and J. Little, Oxidation behavior of several chromia-forming commercial nickel-base superalloys, Oxid. Met., 47 (1997) 381-410.

DOI: https://doi.org/10.1007/bf02134783

[7] F. J. Liu, M. C. Zhang, J. X. Zhang, Y. W. Zhang, High temperature oxidation behaviour of FGH95 superalloy, Journal of University of Science and Technology Beijing, (2007) 704-707.

[8] S. Sinharoy and S. Narasimhan, Oxidation behavior of two nickel-base superalloys used as elevated temperature valves in spark ignited engines and diesel exhaust recirculation (EGR) applications, Superalloys 2004, (2004) 623-626.

DOI: https://doi.org/10.7449/2004/superalloys_2004_623_626

[9] G. Zeng, M. Li, J. Han, X. He and W. Li, Oxidation kinetics of microcrystalline Ni-11. 5 Cr-4. 5 Co-0. 5 Al superalloy sheet fabricated by Electron Beam Physical Vapor Deposition at 800° C, Mater. Lett., 62 (2008) 289-292.

DOI: https://doi.org/10.1016/j.matlet.2007.05.036

[10] X. -M. Hou and K. -C. Chou, Quantitative interpretation of the parabolic and nonparabolic oxidation behavior of nitride ceramic, J. Eur. Ceram. Soc., 29 (2009) 517-523.

DOI: https://doi.org/10.1016/j.jeurceramsoc.2008.06.015

[11] Information on https: /ntrs. nasa. gov/search. jsp?R=19860012183.

[12] L. Zheng, M. Zhang and J. Dong, Oxidation behavior and mechanism of powder metallurgy Rene95 nickel based superalloy between 800 and 1000  ° C, Appl. Surf. Sci., 256 (2010) 7510-7515.

DOI: https://doi.org/10.1016/j.apsusc.2010.05.098

[13] Z. C. Peng, G. J. Ma, X. Q. Wang and X. J. Luo, Study of Isothermal Oxidation Behavior of FGH91 Superalloy, Mater. Sci. Forum, 816 (2015) 628-633.

DOI: https://doi.org/10.4028/www.scientific.net/msf.816.628

[14] S. Cruchley, H. E. Evans, M. P. Taylor, M. C. Hardy and S. Stekovic, Chromia layer growth on a Ni-based superalloy: Sub-parabolic kinetics and the role of titanium, Corros. Sci., 75 (2013) 58-66.

DOI: https://doi.org/10.1016/j.corsci.2013.05.016

[15] A. Pineau and S. D. Antolovich, High temperature fatigue of nickel-base superalloys – A review with special emphasis on deformation modes and oxidation, Eng. Fail. Anal, 16 (2009) 2668-2697.

DOI: https://doi.org/10.1016/j.engfailanal.2009.01.010

[16] D. Deb, S. R. Iyer and V. M. Radhakrishnan, A comparative study of oxidation and hot corrosion of a cast nickel base superalloy in different corrosive environments, Mater. Lett., 29 (1996) 19-23.

DOI: https://doi.org/10.1016/s0167-577x(96)00109-7

[17] B. A. Pint, J. R. Distefano and I. G. Wright, Oxidation resistance: One barrier to moving beyond Ni-base superalloys, Mater. Sci. Eng. A, 415 (2006) 255-263.

DOI: https://doi.org/10.1016/j.msea.2005.09.091

[18] C. V. Robino, Representation of mixed reactive gases on free energy (Ellingharn-Richardson) diagrams, Metall. Mater. Trans. B, 27 (1996) 65-69.

DOI: https://doi.org/10.1007/bf02915078

[19] Y. He, Z. Li, H. Qi and W. Gao, Standard free energy change of formation per unit volume: a new parameter for evaluating nucleation and growth of oxides, sulphides, carbides and nitrides, Mater. Res. Innovations, 1 (1997) 157-160.

DOI: https://doi.org/10.1007/s100190050034

[20] P. Felix, Evaluation of gas turbine materials by corrosion rig tests, in: A. B. Hart, A. J. B. Cutler (Eds. ), Deposition and corrosion in gas turbines, Applied Science Publicaion, London, 1972, pg. 331-349.