Journal of Materials Science

, Volume 42, Issue 18, pp 7882–7893 | Cite as

Influence of melt treatments on sliding wear behavior of Al–7Si and Al–7Si–2.5Cu cast alloys

  • K. G. BasavakumarEmail author
  • P. G. Mukunda
  • M. Chakraborty


The microstructures and dry sliding wear behavior of Al–7Si and Al–7Si–2.5Cu cast alloys were studied after various melt treatments like grain refinement and modification. Results indicate that combined grain refined and modified Al–7Si–2.5Cu cast alloys have microstructures consisting of uniformly distributed α-Al grains, eutectic Al– silicon and fine CuAl2 particles in the interdendritic region. These alloys exhibited better wear resistance in the cast condition compared with the same alloy subjected to only grain refinement or modification. The improved wear resistances of Al–7Si–2.5Cu cast alloys are related to the refinement of the aluminum grain size, uniform distribution of eutectic Al-silicon and fine CuAl2 particles in the interdendritic region resulting from combined refinement and modification. This paper attempts to investigate the influence of the microstructural changes in the Al–7Si and Al–7Si–2.5Cu cast alloys by grain refinement, modification and combined action of both on the sliding wear behavior.


Wear Surface Cast Alloy Wear Debris Interdendritic Region Soft Phase 


  1. 1.
    Okabayashi K, Kawamoto M (1968) Bull Uni Osaka Prefecture A 17Google Scholar
  2. 2.
    Rohatgi PK, Pai BC (1974) Wear 28:353CrossRefGoogle Scholar
  3. 3.
    Torabian H, Pathak JP, Tiwari SN (1994) Wear 172:49CrossRefGoogle Scholar
  4. 4.
    Clarke J, Sarkar AD (1979) Wear 54:7CrossRefGoogle Scholar
  5. 5.
    Balu PJ (1981) Wear 71(1):29CrossRefGoogle Scholar
  6. 6.
    Shivnath R, Sengupta PK, Eyre TS (1977) British Foundry Jl 70(12):349Google Scholar
  7. 7.
    Pramila Bai BN, Biswas SK (1984) J Mater Sci 19:3588CrossRefGoogle Scholar
  8. 8.
    Pramila Bai BN, Biswas SK (1987) Wear 120:61CrossRefGoogle Scholar
  9. 9.
    Pramila Bai BN, Biswas SK, Kumtekar NN (1983) Wear 87:237CrossRefGoogle Scholar
  10. 10.
    Sarkar AD (1975) Wear 31:331CrossRefGoogle Scholar
  11. 11.
    Somi Redy A, Premila Bai BN, Murthy KSS, Biswas SK (1994) Wear 171:117Google Scholar
  12. 12.
    Eyre TS (1980) Microstruct Sci 8:141Google Scholar
  13. 13.
    Kori SA, Murty BS, Chakraborty M (2000) Mater Sci Engg A283:98Google Scholar
  14. 14.
    Massalksi TB (1990) In: Scott WW Jr (ed) Binary alloy Phase Diagrams, 2nd edn. America, p 540Google Scholar
  15. 15.
    Lim SC, Ashby MS (1987) Act Metall 35(1):1CrossRefGoogle Scholar
  16. 16.
    Jahanmir S, Suh NP (1977) wear 44:17CrossRefGoogle Scholar
  17. 17.
    Yang CC, Hsu WM, Chang E (1997) Mater Sci Tech 13:687CrossRefGoogle Scholar
  18. 18.
    Pramila Bai BN, Biswas SK (1991) Scr Metall Mater 39:833Google Scholar
  19. 19.
    Lingaurd S, Fu KH, Chueng KH (1979) Wear 759Google Scholar
  20. 20.
    Razavizadeh K, Eyre TS (1982) Wear 79:325CrossRefGoogle Scholar
  21. 21.
    Madakson Peter B (1983) Wear 94:193Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • K. G. Basavakumar
    • 1
    Email author
  • P. G. Mukunda
    • 1
  • M. Chakraborty
    • 1
  1. 1.Department of Metallurgical and Materials EngineeringIndian Institute of TechnologyKharagpurIndia

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