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High Temperature Oxidation of Ni3Al Composites

Published online by Cambridge University Press:  21 February 2011

P. F. Tortorelli ,
J. H. DeVan ,
C. G. McKamey  and
M. Howell
P. F. Tortorelli
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
J. H. DeVan
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
C. G. McKamey
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
M. Howell
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
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Abstract

As part of an effort to develop oxidation-resistant metal matrix composites, the influence of reinforcement materials on the oxidation of Ni3Al was studied. Thermogravimetric measurements and microstructural analyses were used to determine the 800°C oxidation behavior of Ni3Al and composites based on this material. The presence of fiber (Al2O3)- or particle (TiN or TiC)- reinforcement material in the Ni3Al increased susceptibility to oxidation as measured by the amount of reacted material, rate constants, and/or extent of internal attack. The orientation of fibers with respect to the free surfaces was found to affect the oxidation behavior by providing, in certain cases, reactive paths along the fiber-matrix interface that led to significant internal penetration. The results suggest that the choice of reinforcement material and the method of materials processing will be important considerations in the design of oxidation-resistant Ni3Al composites. However, ways to minimize the detrimental influence of the reinforcement material on oxidation resistance often conflict with requirements for obtaining attractive mechanical and physical properties of the composite.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 194: Symposium R – Intermetallic Matrix Composites I , 1990 , 361
Copyright
Copyright © Materials Research Society 1990

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References

1. Yang, J.-M., Kao, W. H., and Liu, C. T., Mater. Sci. Eng. A107, 81 (1989).Google Scholar
2. Dhingra, A. K., “Advances in Inorganic Fiber Developments,” in Contemporary Topics in Polymer Science, Vol.5, edited by Vandenburg, E. J. (Plenum Press, New York, 1984) p. 227.Google Scholar
3. Romine, J. C., Ceram. Eng. Sci. Proc. 8, 755 (1987).Google Scholar
4. McKamey, C. G. et al., in High Temperature Ordered Intermetallic Alloys III, edited by Liu, C. T. et al. (Mater. Res. Soc. Proc. 133, Pittsburgh, PA 1989) pp. 609–614.Google Scholar
5. McKamey, C. G. and Lee, E. H., “Microstructure and Mechanical Properties of Ni3Al-Al2O3 Composites Produced by Hot Extrusion,” this volume, 1990.Google Scholar
6. Tortorelli, P. F., DeVan, J. H., Bennett, M. J., and Bishop, H. E., “Oxidation of Ni3Al-Al2O3,” to be submitted for publication in Oxid. Met., 1990.Google Scholar
7. Petrasek, D. W. et al., “Fiber Reinforced Superalloys,” Chapter 19 in Superalloys. Supercomposites. and Superceramics, edited by Tien, J. K. and Caulfield, T. (Academic Press, New York, 1989) pp. 659–661.Google Scholar
8. Atkinson, A., Journal de Physique 46, C4–379- C4-391 (1985).Google Scholar
9. Atkinson, A., “Grain Boundary Diffusion in Oxides and its Contribution to Oxidation Processes,” in Proc. Peterson Memorial Symp. on Oxid. Metals and Assoc. Mass Transp., edited by Dayananda, M. A., Rothman, S. J., and King, W. E. (TMS, Warrendale, PA, 1987) pp. 29–47.Google Scholar
10. Harris, J. E., Mater. Sci. and Technol. 4, 457–459 (1988).Google Scholar
11. DeVan, J. H. and Hippsley, C. A., “Oxidation of Ni3Al Below 850°C and Its Effect on Fracture Behavior,” in Oxidation of High-Temperature Intermetallics, edited by Grobstein, T. and Doychak, J. (TMS, Warrendale, PA, 1989) pp. 31–40.Google Scholar
12. Povirk, G. L. et al., J. Mater. Sci. 23, 3945 (1988).Google Scholar
13. Tortorelli, P. F., DeVan, J. H., McKamey, C. G., and Howell, M., Oak Ridge National Laboratory, unpublished results, 1990.Google Scholar