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Journal of Materials Science

, Volume 32, Issue 18, pp 4739–4748 | Cite as

Particle fracture in metal-matrix composite friction joints

  • C Maldonado
  • T. H North
Article

Abstract

The influence of welding parameters, reinforcing particle chemistry and shape, matrix condition and silver interlayers on particle fracture during similar and dissimilar friction welding of aluminium-based metal-matrix composite (MMC) base material was investigated. Two composite base materials were examined, one containing Al2O3 particles and the other containing 72 wt% Al2O3–7 wt % Fe2O3–17 wt % SiO2–3 wt % TiO2 particles. The different material combinations comprised MMC/MMC, MMC/alloy 6061, MMC/AISI 304 stainless steel and MMC/1020 mild steel joints. Particle fracture was confined to a narrow region immediately adjacent to the dissimilar joint interface. The calculated normal pressure for fracture of Al2O3 particles ranges from 0.56–17.58 MPa and is in agreement with an experimentally measured pressure of 1.06 MPa found during sliding wear testing of aluminium-based composite base material. Because the lowest normal pressure applied during friction joining was 30 MPa, particle fracture occurs very early in the joining operation (immediately following contact between the two substrates). The application of a silver interlayer during dissimilar MMC/AISI 304 stainless steel joining decreased the particle fracture tendency. It is suggested that the presence of a silver interlayer decreased the coefficient of friction and lowered the stresses applied at the contact region. The particle fracture tendency was markedly increased when the MMC material contained blocky alumina particles. However, there was negligible particle fracture when the MMC base material contained spherical 72 wt % Al2O3–7 wt % Fe2O3–17 wt % SiO2–3 wt % TiO2 particles.

Keywords

Particle Fracture Friction Welding Joint Interface Slide Wear Testing Friction Pressure 

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References

  1. 1.
    D. J. LLOYD, L. MORRIS and E. NEHME, in “Fabrication of Particulate Reinforced Metal Composites”, edited by J. Masounave and F. G. Hammel (ASM International, Metals Park, Ohio, USA, 1990).Google Scholar
  2. 2.
    D. J. LLOYD, Acta Metall. Mater. 39 (1991) 59.CrossRefGoogle Scholar
  3. 3.
    D. ZHAO, F.R. TULER, and D.J. LLOYD, ibid. 42 (1994) 2525.CrossRefGoogle Scholar
  4. 4.
    T. MOCHIDA, M. TAYA and D. J. LLOYD, Mater. Trans. JIM 32 (1991) 931.CrossRefGoogle Scholar
  5. 5.
    D. C. LIU, R. MARGEVECIUS and J.J. LEWANDOSKI, in “Ceramics Transactions”, Vol. 19 “Advanced Composites Materials”, edited by M. D. Sacks (The American Ceramic Society Westerville, OH, USA, 1990) p. 513-518.Google Scholar
  6. 6.
    Y. ZHOU, Z. LI, L. HU, A. FUJI and T.H. NORTH, ISIJ Int. 35 (1995) 1315.CrossRefGoogle Scholar
  7. 7.
    G. BENDZSAK, T. H. NORTH and Z. LI, and Y. ZHAI, Particle fracture, retention and fluid flow in mmc friction welds, Metall. Trans. in press.Google Scholar
  8. 8.
    T. H. NORTH, in “Proceedings of the 6th International Welding Symposium”, Vol. 2, edited by M. Ushio, Japan Welding Society, Osaka, Japan, 1996, pp. 673-682.Google Scholar
  9. 9.
    A. T. ALPAS and J. ZHANG, Wear 155 (1992) 83.CrossRefGoogle Scholar
  10. 10.
    T. H. NORTH, unpublished research, Department of Metallurgy and Materials Science, University of Toronto (1996).Google Scholar
  11. 11.
    C. MALDONADO and T. H. NORTH, Microstructure and mechanical properties of MMC/AISI 304 stainless steel joints containing interlayers, submitted to Science and Technology of Welding and Joining, 1997.Google Scholar
  12. 12.
    C. A. LEWIS and P. J. WITHERS, Acta Metall. Mater. 43 (1995) 3685.CrossRefGoogle Scholar
  13. 13.
    G. E. DIETER, “Mechanical Metallurgy” (McGraw-Hill, London, 1986).Google Scholar
  14. 14.
    K. L. JOHNSON, “Contact Mechanics” (Cambridge University Press, Cambridge 1985).CrossRefGoogle Scholar
  15. 15.
    Z. F. ZHANG, L. C. ZHANG and Y. W. MAI, J. Mater. Sci. 30 (1995) 1961.CrossRefGoogle Scholar
  16. 16.
    Idem ibid. 30 (1995) 1967.Google Scholar
  17. 17.
    N. P. SUH, “Tribophysics” (Prentice-Hall, Englewood Cliffs, NJ, 1986).Google Scholar
  18. 18.
    P. POZA and J. LLORCA, Metall. Trans. 26A (1995) 3131.CrossRefGoogle Scholar
  19. 19.
    Z. WANG, T. CHEN and D. J. LLOYD, ibid. 24A (1993) 197.CrossRefGoogle Scholar
  20. 20.
    T. W. CLYNE and P. J. WITHERS, “An Introduction to Metal Matrix Composites” (Cambridge University Press, Cambridge, 1993).CrossRefGoogle Scholar

Copyright information

© Chapman and Hall 1997

Authors and Affiliations

  • C Maldonado
    • 1
  • T. H North
  1. 1.Department of Metallurgy and Materials ScienceUniversity of TorontoTorontoCanada

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