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Journal of Materials Science

, Volume 32, Issue 21, pp 5571–5575 | Cite as

Counteracting particulate segregation during transient liquid-phase bonding of MMC-MMC and Al2O3-MMC joints

  • Y ZHAI
  • T. H NORTH
Article

Abstract

The microstructure and mechanical properties of MMC-MMC and Al2O3-MMC joints (MMC is metal matrix composite) produced at a bonding temperature of 853 K using copper foils ranging in thickness from 10 to 30 μm were examined. The particle segregation tendency during transient liquid-phase (TLP) bonding of aluminium-based MMC material markedly increases when the aluminium-based composite material contains large number of small radius (less than 10 μm) reinforcing particles. Also, the particle segregation tendency is much greater in dissimilar Al2O3-MMC joining since the rate of solid-liquid interface movement is much slower and the time required for completing the isothermal solidification during TLP bonding is much longer. The particle segregation tendency during MMC-MMC and Al2O3-MMC bonding can be counteracted using a combination of a short (1 min) holding time at the bonding temperature (853 K) and subsequent post-weld heat treatment at 773 K for 4 h. This TLP-bonding-heat-treatment cycle removes the retained eutectic phase present at the joint centreline.

Keywords

Shear Strength Copper Foil Bonding Temperature Eutectic Phase Joint Shear Strength 

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References

  1. 1.
    Y ZHOU, W. F. GALE and T. H. NORTH, Int. Mater. Rev. 40 (1996) 181.CrossRefGoogle Scholar
  2. 2.
    Z. LI, Y. ZHOU and T. H. NORTH, J. Mater. Sci. 30 (1995) 1075.CrossRefGoogle Scholar
  3. 3.
    Z. LI, W. FEARIS and T. H. NORTH, Mater. Sci. Technol. 11 (1995) 363.CrossRefGoogle Scholar
  4. 4.
    Y. ZHAI, T. H. NORTH and J. SERRATO-RODRIGUES, J. Mater. Sci. 32 (1997) 1393.CrossRefGoogle Scholar
  5. 5.
    A. A. McFAYDEN, R. R. KAPOOR and T. W. EAGAR, Weld. J. 11 (1990) 339s.Google Scholar
  6. 6.
    T. ENJO, K. IKEUCHI, Y. MARAKAMI and N. SUZUKI, Trans. Japanese Welding Research Institute 16 (1987) 286.Google Scholar
  7. 7.
    D. SHANGUUAN, S. AHUJA and D. M. STEFANESCU, Metall. Trans. A 23 (1989) 669.CrossRefGoogle Scholar
  8. 8.
    R. SASIKUMAR, T. R. RAMAMOHAN and B. C. PAI, Acta Metall. 39 (1989) 2085.CrossRefGoogle Scholar
  9. 9.
    R. SASIKUMAR, B. K. DHINDAW, S. A. KACAR and A. MOITRA, Metall. Trans. A 39 (1991) 517.Google Scholar
  10. 10.
    D. M. STEFANESCU, B. K. DHINDAW, S. A. KACAR and A. MOITRA, ibid. 19 (1988) 2847.CrossRefGoogle Scholar
  11. 11.
    T. SHINODA, H. LIU and Y. MISHIMA, Mater. Sci. Technol. A 146 (1991) 91.CrossRefGoogle Scholar
  12. 12.
    I. TUAH-POKU, M. DOLLAR and T. B. MASSALSKI, Metall. Trans. A 19 (1988) 675.CrossRefGoogle Scholar

Copyright information

© Chapman and Hall 1997

Authors and Affiliations

  • Y ZHAI
    • 1
  • T. H NORTH
    • 1
  1. 1.Department of Metallurgy and Materials ScienceUniversity of TorontoTorontoCanada

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