Advertisement

Effect of deformation temperature on the mechanical behavior and deformation mechanisms of Al-Al2O3 metal matrix composites

  • A. A. Mazen
Article

Abstract

Aluminum-alumina (Al-Al2O3) metal matrix composite (MMC) materials were fabricated using the powder metallurgy (PM) techniques of hot pressing followed by hot extrusion. Different reinforcement weight fractions were used, that is, 0, 2.5, 5, and 10 wt% Al2O3. The effect of deformation temperature was investigated through hot tensile deformation conducted at different temperatures. The microstructures of the tested specimens were also investigated to characterize the operative softening mechanisms.

The yield and tensile strength of the Al-Al2O3 were found to improve as a function of reinforcement weight fraction. With the exception of Al-10wt%Al2O3, the MMC showed better strength and behavior at high temperatures than the unreinforced matrix. The uniform deformation range was found to decrease for the same reinforcement weight fraction, as a function of temperature. For the same deformation temperature, it increases as a function of reinforcement weight fraction.

Both dynamic recovery and dynamic recrystallization were found to be operative in Al-Al2O3 MMC as a function of deformation temperature. Dynamic recovery is dominant in the lower temperature range, while dynamic recrystallization is more dominant at the higher range. The increase in reinforcement weight fraction was found to lead to early nucleation of recrystallization. No direct relationship was established as far as the number of grains nucleated due to each reinforcement particle.

Keywords

aluminum/alumina deformation temperature dynamic recovery dynamic recrystallization high temperature deformation metal matrix composites powder metallurgy softening 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    G.E. Dieter, Mechanical Metallurgy, 2nd ed., McGraw Hill, 1988, p 432Google Scholar
  2. 2.
    K.N. Ramakrishnan, H.B. McShane, T. Sheppard, and E.K. Jonnidis, Sci. Technol., Vol 8, 1992, p 709Google Scholar
  3. 3.
    Y.W. Kim, in Dispersion Strengthened Aluminum Alloys, Y.W. Kim and W.M. Griffith, Ed., TMS, Warrendale, PA, 1988Google Scholar
  4. 4.
    T.E. Teitz and I.G. Palmer, Advances in Powder Technology, American Society for Metals, 1982Google Scholar
  5. 5.
    R.A. Signorelli, Progress in Science and Engineering of Composites, T. Hayashi, K. Kawata, and S. Umekawa, Ed., ICCM-IV, Tokyo, 1982, p 37Google Scholar
  6. 6.
    R.B. Bahgat, Metal Matrix Composites: Processing and Interfaces, R.K. Everett and R.J. Arsenault, Ed., Academic Press, 1991, p 43Google Scholar
  7. 7.
    A.K. Dhingra and L.B. Gulbransen, Cast Reinforced Metal Matrix Composites, S.G. Fishman and A.K. Dhingra, Ed., ASM International, 1988, p 271Google Scholar
  8. 8.
    S.J. Harris, Mater. Sci. Technol., Vol 4, 1988, p 231CrossRefGoogle Scholar
  9. 9.
    S. Ray, J. Mater. Sci., Vol 28, 1993, p 5397CrossRefGoogle Scholar
  10. 10.
    R.M. Bhagat, M.F. Amateau, M.B. House, K.C. Meinert, and P. Nisson, J. Compos. Mater., Vol 26 (No. 110), 1998, p 1578Google Scholar
  11. 11.
    M. Manoharan and J.J. Lewandowski, Mater. Sci. Eng. A, Vol 150, 1992, p 179CrossRefGoogle Scholar
  12. 12.
    J. Singh, S.K. Goel, V.N.S. Mathur, and L.M. Kapoor, J. Mater. Sci., Vol 26, 1991, p 2750CrossRefGoogle Scholar
  13. 13.
    S.W. Lai and D.D.L. Chung, J. Mater. Sci., Vol 29, 1994, p 6181CrossRefGoogle Scholar
  14. 14.
    N.J. Abdul-Latif, A.I. Khedr, and S.K. Goel, J. Mater. Sci., Vol 22, 1987, p 466CrossRefGoogle Scholar
  15. 15.
    A.H. Cottrell, An Introduction to Metallurgy, Edward Arnold, London, 1967, p 402Google Scholar
  16. 16.
    C.M. Friend, J. Mater. Sci., Vol 22, 1987, p 3005CrossRefGoogle Scholar
  17. 17.
    K.S. Aradhya and M.K. Surappa, Scr. Metall. Mater., Vol 25, 1991, p 817CrossRefGoogle Scholar
  18. 18.
    A.A. Mazen and A.Y. Ahmed, Proceedings of the Fifth Int. Conf. on Composites Engineering, ICCE/5 (Las Vegas, NV), July 1998, p 607Google Scholar
  19. 19.
    M.J. Haynes and R.P. Gongloff, Metall. Mater. Trans. A, Vol 28, 1997, p 1815CrossRefGoogle Scholar
  20. 20.
    D.G.C. Syn and A.K. Ghosh, Metall. Mater. Trans. A, Vol 25, 1994, p 2049CrossRefGoogle Scholar
  21. 21.
    R.J. Arsenault, N. Shi, C.R. Feng, and L. Wang, Mater. Sci. Eng. A, Vol 131, 1991, p 55CrossRefGoogle Scholar
  22. 22.
    W.M. Zhong, G. L’Esperance, and M. Suery, Mater. Sci. Eng. A, Vol 214, 1996, p 104CrossRefGoogle Scholar
  23. 23.
    A.F. Whitehouse and T.W. Clyne, Acta. Metall. Mater., Vol 41 (No. 6), 1993, p 1701CrossRefGoogle Scholar
  24. 24.
    P. Olla and P.F. Virdis, Metall. Trans. A, Vol 18, 1987, p 293CrossRefGoogle Scholar
  25. 25.
    O.D. Sherby, R.H. Klundt, and A.K. Miller, Metall. Trans. A, Vol 8, 1977, p 843CrossRefGoogle Scholar
  26. 26.
    H.T. McQueen, W.A. Wang, and J.J. Jonas, Can. J. Phys., Vol 45, 1967, p 1225CrossRefGoogle Scholar
  27. 27.
    T. Sheppard and M.A. Zaidi, Met. Technol., Vol 9, 1982, p 52CrossRefGoogle Scholar
  28. 28.
    M.A. Zaidi and T. Sheppard, Met. Sci., Vol 16, 1982, p 229CrossRefGoogle Scholar
  29. 29.
    H.J. McQueen, E. Evangelista, J. Bowels, and G. Crawford, Met. Sci., Vol 18 (No. 8), 1984, p 392CrossRefGoogle Scholar
  30. 30.
    T. Sheppard, N.C. Parson, and M.A. Zaidi, Met. Sci., Vol 17 (No. 10), 1983, p 481CrossRefGoogle Scholar
  31. 31.
    T. Sheppard and M.G. Tutcher, Met. Sci., Vol 14 (No. 12), 1980, p 579CrossRefGoogle Scholar
  32. 32.
    S.J. Hales and T.R. McNelley, Acta Metall., Vol 36, 1988, p 1229CrossRefGoogle Scholar
  33. 33.
    W.M. Zhong, E. Goiffon, G. L’Espérance, M. Snéey, and J.J. Blandin, Mater. Sci. Eng. A, Vol 214, 1996, p 84CrossRefGoogle Scholar
  34. 34.
    A.R. Jones, Grain Boundary Stracture and Kinetics, American Society for Metals, 1980, p 373Google Scholar
  35. 35.
    F.J. Humphreys, Proc. 9th Riso Symp., S.I. Anderson, H. Lilhst, and D.B. Pedrson, Ed., Denmark, 1988, p 51Google Scholar
  36. 36.
    W.S. Miller and F.J. Humphreys, Scr. Metall. Mater., Vol 25, 1991, p 33CrossRefGoogle Scholar

Copyright information

© ASM International 1999

Authors and Affiliations

  • A. A. Mazen
    • 1
  1. 1.Dept. of EngineeringThe American University in CairoCairoEgypt

Personalised recommendations