JMMCE  Vol.9 No.9 , September 2010
Oxidation Behavior of Fe3Al-5Cr- (0, 0.5, 1.5) Ti Alloys at Temperature Ranges from 800℃ to 1200 ℃
Author(s) Hossam Halfa*
ABSTRACT
As cast Fe3Al-5Cr- (0, 0.5, 1.5) Ti alloys were isothermally oxidized at temperature ranges from 800 to 1200 ℃ in air, and their oxidation characteristics were studied using thermogravimetric analyzer, X-ray diffractometer, optical microscope and scanning electron microscope. It was found that Ti increased the oxidation resistance of Fe3Al- Cr alloys to a certain extent. The oxide scales that formed on the unalloyed Fe3Al alloys consisted primarily of α-Al2O3 containing a small percentage of dissolved iron and chromium ions. The experimental result of unalloyed Fe3Al alloy shows also, an Al-free, Fe-enriched zone was formed beneath the oxide scale, owing to Al consumption to form the oxide scale. The oxide scale on unalloyed Fe3Al alloy had poor adherence. On the other hand, the result shows that, the oxidation rate decreased for titanium alloyed Fe3Al alloy, which has been explained by a change in the nature of the surface scale. Analysis of the oxidation product revealed that the presence of titanium as alloying elements change the nature of formed oxide scale and protect the bulk alloy from further oxidation.

Cite this paper
H. Halfa, "Oxidation Behavior of Fe3Al-5Cr- (0, 0.5, 1.5) Ti Alloys at Temperature Ranges from 800℃ to 1200 ℃," Journal of Minerals and Materials Characterization and Engineering, Vol. 9 No. 9, 2010, pp. 775-786. doi: 10.4236/jmmce.2010.99055.
References
[1]   W.J. Quadakkers, D. Naumenko, and E. Wessel, Oxidation of Metals 61(l/2), 17, 2004.

[2]   H. Al-Badairy and G.J. Tatlock, Oxidation bf Metals 53(1/2), 157, 2000.

[3]   I.G. Wright, R. Peraldi, and B.A. Bint, Materials Science Forum 4 6 1 -464, 579, 2004.

[4]   S.J. Taniguchi and A. Andoh, Oxidation of Metals52 (1/2), 1, 1999.

[5]   N.S. Stoloff, Int. Met. Rev. 29, 123, 1984.

[6]   C.G. McKamey, J.H. DeVan, P.F. Tortorelli, V.K. Sikka, J. Mater.Res. 6, 1779, 1991.

[7]   S.C. Deevi, V.K. Sikka, Intermetallics 4, 357, 1996.

[8]   C.T. Liu, J.O. Stiegler, F.H. Froes, Ordered intermetallics, 10th ed., Metals Handbook, vol. 2, ASM, Metals Park, USA, 913, 1990.

[9]   C.T. Liu, K.S. Kumar, Ordered intermetallic alloys, part 1, nickel and iron aluminides, J. Metals 45, 38 1993.

[10]   C.T. Liu, J.O. Stiegler, F.H. Froes, Ordered intermetallics, 10th ed., Metals Handbook, vol. 2, ASM, Metals Park, USA, 913, 1990.

[11]   W.J. Quadakkers, D. Naumenko, and E. Wessel, Oxidation of Metals 61(l/2), 17, 2004.

[12]   H. Al-Badairy and G.J. Tatlock, Oxidation of Metals 53(1/2), 157, 2000.

[13]   I.G. Wright, R. Peraldi, and B.A. Bint, Materials Science Forum 461-464, 579, (2004).

[14]   S.J. Taniguchi and A. Andoh, Oxidation of Metals52(1/2), 1, 1999.

[15]   P.F. Tortorelli, J.H. DeVan, Mater. Sci. Eng., A Struct. Mater.: Prop. Microstruct. Process. 153, 573 ,1992.

[16]   S.W. Banovic, J.N. DuPont, A.R. Marder, Oxid. Met. 54, 339, 2000.

[17]   P.F. Tortorelli, K. Natesan, Mater. Sci. Eng., A Struct. Mater.: Prop. Microstruct. Process. 258, 115 ,1998.

[18]   K. Natesan, Mater. Sci. Eng., A Struct. Mater.: Prop. Microstruct. Process. 258, 126, 1998.

[19]   B.A. Pint, P.F. Tortorelli, I.G. Wright, Mater. High Temp. 16, 1, 1999.

[20]   J.H. DeVan, in: T. Grobstein, J. Doychak (Eds.), Oxidation of High-Temperature Intermetallics, TMS, Warrendale, PA, 107, 1989.

[21]   P.F. Tortorelli, J.H. DeVan, in: J.H. Schneibel, M.A. Crimp (Eds.), Processing, Properties and Application of Iron Aluminides, TMS, Warrendale, PA, 257, 1994.

[22]   P.F. Tortorelli, J.H. DeVan, Mater. Sci. Eng. A153, 573, 1992.

[23]   G.H. Meier, in: H.J. Grabke, M. Schu¨ tze (Eds.), Oxidation of Intermetallics, Wiley_/VCH, New York, 15, 1997.

[24]   S.E. Sadique, A.H. Mollah, and M.S. Islam, Oxidation of Metals 54(5/6), 385, 2000.

[25]   P.S. Liu, Rare Materials and Engineering 329, 681, 2003 (in Chinese).

[26]   G.C. Bye, G.T. Simpkin, J. Am. Ceram. Soc. 57, 367, 1974.

[27]   S.C. Choi, H.J. Cho, D.B. Lee, Oxid. Met. 46, 109, 1996.

[28]   B.A. Pint, J.R. Martin, L.W. Hobbs, Solid State Ionics 78, 99, 1995.

 
 
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