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Thermal Fatigue of MoSi2 Particulate and Short Fiber Composites

Published online by Cambridge University Press:  15 February 2011

M. T. Kush ,
J. W. Holmes  and
R. Gibala
M. T. Kush
Affiliation:
The University of Michigan, Department of Materials Science and Engineering, Ann Arbor, MI 48 109-2136
J. W. Holmes
Affiliation:
The University of Michigan, Department of Mechanical Engineering and Applied Mechanics, Ann Arbor, MI148 109-2125
R. Gibala
Affiliation:
The University of Michigan, Department of Materials Science and Engineering, Ann Arbor, MI 48 109-2136
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Abstract

Induction heating of disk shaped specimens was used to compare and contrast the thermal fatigue behavior of MoSi2 and MoSi2-based composites. Specimens were subjected to 5 s heating and cooling cycles between temperature limits of 700°C and 1200°C. The monolithic material and a MoSi2- 10 vol% TiC composite exhibited poor thermal shock resistance and could not be thermally cycled according to this temperature-time profile. A 30 vol% TiC composite exhibited much better thermal shock and thermal fatigue resistance as compared to the monolithic material, but exhibited undesirable oxidation. MoSi2-10 and 30 vol% SiC particulate composites exhibited excellent thermal shock and thermal fatigue resistance compared to that of the monolithic material. A MoSi2-10 vol% SiC whisker composite did not show improved thermal fatigue resistance due to the initial processing defects present in the material. The monolithic material and the 10 vol% TiC composite were also subjected to 30 s heating and cooling cycles between temperature limits of 700°C and 1200°C. Both of these materials exhibited better thermal fatigue resistance at this temperature-time profile, but the 10 vol% TiC composite also exhibited undesirable oxidation. The fatigue results are discussed with reference to the initial microstructure of the specimens and the stress-strain history of the specimens which was obtained by a thermoelastic finite element analysis.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 350: Symposium U – Intermetallic Matrix Composites III , 1994 , 189
Copyright
Copyright © Materials Research Society 1994

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References

1. Berkowitz-Mattuck, J.B. and Dils, R.R., J. Electrochem. Soc., 112 [6] 583 (1965).Google Scholar
2. Holmes, J.W., McClintock, F.A., O'Hara, K.S. and Connors, M.E., Low Cycle FatigueASTM STP 942, Solomon, H.D. et al. , eds., ASTM, Philadelphia, PA, 672 (1987).Google Scholar
3. Touloukian, Y.S., Kirby, R.K., Taylor, R.E. and Lee, T.Y.R., Thermophysical Properties of Matter, IFI/Plenum, New York, NY, 13 (1973).Google Scholar
4. Miracle, D. and Lipsitt, H., J. Am Ceram. Soc. 66, 592 (1983).Google Scholar
5. Gibbs, W.S., Petrovic, J.J. and Honnell, R.E., Ceram. Eng. Sci. Proc., 8, 645 (1987).Google Scholar
6. Kush, M.T., Holmes, J.W. and Gibala, R. in High Temperature Silicides and Refractory Alloys, edited by Bewlay, B.P., Petrovic, J.J., Briant, C.L., Vasudevan, A.K. and Lipsitt, H.A. (Mater. Res. Soc. Proc. 322, Pittsburgh, PA, 1994) in pressGoogle Scholar
7. Simpson, P.G., Induction Heating: Coil and System Design, McGraw-Hill Book Company, Inc., New York, 5 (1960).Google Scholar
8. ABAQUS Users Manual, Hibbitt, Karlsson and Sorensen, Inc., Providence, R.I., (1982).Google Scholar