Advertisement

Journal of Materials Science

, Volume 30, Issue 5, pp 1277–1282 | Cite as

Measurement of residual stresses in Al2O3/Ni laminated composites using an X-ray diffraction technique

  • L. Hehn
  • C. Zheng
  • J. J. MecholskyJr
  • C. R. Hubbard
Papers

Abstract

Using an X-ray diffraction technique, macro-residual stresses were measured in laminated composites consisting of alternating layers of α-Al2O3 and nickel. The in-plane thermal mismatch stresses which develop during fabrication were found to be compressive and tensile in the α-Al2O3 and nickel layers, respectively. The magnitude of the in-plane stresses was found to be ≈ 110 MPa. Models of laminate structures predict the stress state to be biaxial in the plane of the layers. However, substantial stresses were observed perpendicular to the plane of the laminate; this stress might be due to the hot-pressing procedure used to fabricate the samples. The stress on the side surface of a laminate was measured using the indentation method and the results were consistent with those obtained by the X-ray method. Three samples were heated to 700, 900 and 1000 °C, respectively, and then cooled to test the effect of stress relaxation of the residual stresses due to the thermal expansion. The heat treatments (700–1000 °C) had no effect on the measured stress states of the laminates.

Keywords

Nickel Heat Treatment Stress State Residual Stress Thermal Expansion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Zheng Chen and J. J. Mecholsky Jr, J. Am. Ceram. Soc., in press.Google Scholar
  2. 2.
    P. Chantikul, G. R. Anstis, B. R. Lawn and D. B. Marshall, ibid. 64 (1981) 539.CrossRefGoogle Scholar
  3. 3.
    C. V. Noyan and J. B. Cohen, “Residual Stress: Measurement by Diffraction and Interpretation” (Springer, New York, 1987).CrossRefGoogle Scholar
  4. 4.
    J. B. Cohen, H. Dölle and M. R. James, “Stress Analysis from Powder Diffraction Patterns”, National Bureau of Standards Special Publication 567 (National Bureau of Standards, Gaithersburg, MD, 1980) pp. 453–77.Google Scholar
  5. 5.
    M. Kurita, I. Ihara and A. Saito, Adv. X-Ray Anal. 33 (1990) 363.Google Scholar
  6. 6.
    P. K. Predecki, A. Abushasan and C. Barrett, ibid. 34 (1991) 643.Google Scholar
  7. 7.
    B. D. Cullity, “Elements of X-Ray Diffraction”, 2nd Edn (Addison-Wesley, Reading, MA, 1978).Google Scholar
  8. 8.
    Y. M. Cheong and H. L. Marcus, “Advances in Surface Treatments: Technology-Applications-Effects” Vol. 4 (Pergamon Press, New York, 1987) pp. 115–24.Google Scholar
  9. 9.
    O. Iancu, D. Munz, B. Eigenmann, B. Scholtes and E. Macherauch, J. Am. Ceram. Soc. 73 (1990) 1144.CrossRefGoogle Scholar
  10. 10.
    H. Dölle, J. Appl. Crystallogr. 12 (1979) 489.CrossRefGoogle Scholar
  11. 11.
    R. A. Winholtz and J. B. Cohen, Austral. J. Phys. 41 (1988) 189.CrossRefGoogle Scholar
  12. 12.
    A. Abuhasan, PhD thesis, Department of Physics, University of Denver (1990).Google Scholar
  13. 13.
    H. E. Boyer and T. L. Gall, “Metals Handbook, Desk Edition” edited by H. E. Boyer and T. L. Gall (ASM, Cleveland, OH, 1985) Sectn 1. 47.Google Scholar
  14. 14.
    A. Abushasan, P. K. Predecki and C. S. Barrett, Adv. X-Ray Anal. 31 (1988) 231.Google Scholar
  15. 15.
    E. Dörre and H. Hübner, “Alumina” (Springer, Berlin, 1984).CrossRefGoogle Scholar
  16. 16.
    B. D. Cullity, “Elements of X-Ray Diffraction”, 2nd Edn (Addison-Wesley, MA, 1978), p. 287.Google Scholar
  17. 17.
    P. K. Predecki, University of Denver, personal communication, 13 April 1992.Google Scholar
  18. 18.
    L. Hehn and P. K. Predecki, Adv. X-Ray Anal. 34 (1990) 669.Google Scholar
  19. 19.
    H. Dölle and J. B. Cohen, Metall. Trans. 11A (1980) 159.CrossRefGoogle Scholar
  20. 20.
    I. C. Noyan, ibid. 14A (1983) 1907.CrossRefGoogle Scholar
  21. 21.
    C. H. Hsueh and A. G. Evans, J. Am. Ceram. Soc. 68(3) (1985) 120.CrossRefGoogle Scholar
  22. 22.
    Zheng Chen, MS thesis, Department of Materials Science and Engineering, University of Florida, (1992) pp. 43–44.Google Scholar
  23. 23.
    H. C. Cao and A. G. Evans, Acta Metall. 37 (1989) 2969.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • L. Hehn
    • 1
  • C. Zheng
    • 1
  • J. J. MecholskyJr
    • 1
  • C. R. Hubbard
    • 2
  1. 1.Department of Materials Science and EngineeringUniversity of FloridaGainesvilleUSA
  2. 2.High Temperature Materials LaboratoryOak Ridge National LaboratoryOak RidgeUSA

Personalised recommendations