International Journal of Thermophysics

, Volume 12, Issue 4, pp 711–722

Thermal expansion of TiAl + TiB2 alloys and model calculations of stresses and expansion of continuous fiber composites

  • T. A. Hahn
Article

Abstract

Thermal expansion values for three TiAl alloys with different additions of TiB2 can be represented using a third-order equation at temperatures between 20 and 800°C. Expansion values were obtained on both heating and cooling temperature cycles. The total expansion at 800°C is between 0.917 and 0.931% for three different samples. The expansivity increases from about 10×10−6°C−1 at 80°C to 14×10−6°C−1 at 750°C. A five-coaxial cylinder elastic model for multizone-coated continuous fiber composites is developed for predicting stresses and thermal expansion of composites. Either isotropic or transversely isotropic material properties can be assigned to the various cylinder zones.

Key words

continuous fiber composites stress/strain calculations thermal expansion TiAl+TiB2 alloys 

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References

  1. 1.
    T. A. Hahn and R. K. Kirby, in Thermal Expansion-1971, Am. Inst. Phys. Conf. Proc. No. 3, M. G. Graham and H. E. Hagy, eds., H. C. Wolfe, series ed. (Am. Inst. Phys., New York, 1972), p. 87.Google Scholar
  2. 2.
    Y. Mikata and M. Taya, J. Comp. Mater. 19:554 (1985).Google Scholar

Copyright information

© Plenum Publishing Corporation 1991

Authors and Affiliations

  • T. A. Hahn
    • 1
  1. 1.Composites and Ceramics BranchNaval Research LaboratoryWashington, D.C.USA

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