Advertisement

Journal of Materials Science

, Volume 30, Issue 7, pp 1698–1708 | Cite as

Effect of alloying elements and dendrite arm spacing on the microstructure and hardness of an Al-Si-Cu-Mg-Fe-Mn (380) aluminium die-casting alloy

  • A. M. Samuel
  • F. H. Samuel
Papers

Abstract

The microstructure of aluminium alloys based on 380 die-casting alloy was studied in detail, as a function of the alloying elements iron, magnesium, copper and manganese, and the solidification rate. Three methods of solidification were employed to simulate cooling rates obtained from investment, permanent, and die-casting processes, corresponding to ∼ 0.4, ∼ 12 and ∼ 260 °C s−1, respectively, with emphasis on the highest cooling rate. Hardness measurements were carried out on samples obtained from the latter, in the as-cast and T5 tempered conditions (4 h at 25, 155, 180, 200 and 220 °C). The results have been discussed and the correlation between the hardness and microstructure as a function of alloying elements is presented. The effect of solution heat treatment on the variations in the microstructure and hardness has also been discussed.

Keywords

Copper Microstructure Magnesium Heat Treatment Manganese 
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.
    R. W. Bruner, “Metallurgy of Die Casting Alloys” (SDCE, Detroit, MI, 1976) p. 25.Google Scholar
  2. 2.
    “Metals Handbook,” Vol. 15, “Castings,” 9th Edn (ASM International, Metals Park, OH, 1988) p. 286.Google Scholar
  3. 3.
    L. F. Mondolfo, “Aluminium Alloys: Structure and Properties” (Butterworths, London, 1976) p. 759.CrossRefGoogle Scholar
  4. 4.
    E. K. Holz, “SDCE Trans.” (1968) Paper 112, 7 pp.Google Scholar
  5. 5.
    D. L. Colwell, AFS Trans. 60 (1952) 517.Google Scholar
  6. 6.
    E. G. Morgan, Foundry Trade J. 17 June (1982) 887.Google Scholar
  7. 7.
    V. Z. Kisun'ko, E. E. Likashenko, Yu. B. Bychkov, V. P. Efimenko and A. G. Melakh, Tsvetnye Metally (Sov. J. Non-Ferrous Metals) 29 (6) (1988) 96.Google Scholar
  8. 8.
    R. P. Dunn and W. Y. Dickert, Die Casting Eng. 19 (March–April) (1975) 12.Google Scholar
  9. 9.
    W. Jonsson, “SDCE Transactions” (1964) Paper 73, 7 pp.Google Scholar
  10. 10.
    S. Gowri and F. H. Samuel, Metall. Mater. Trans. 25A (1994) 437.CrossRefGoogle Scholar
  11. 11.
    F. H. Samuel, Metall. Trans. 17A (1986) 73.CrossRefGoogle Scholar
  12. 12.
    A. M. Samuel, H. Liu and F. H. Samuel, Compos. Sci. Technol. 49 (1993) 1.CrossRefGoogle Scholar
  13. 13.
    S. Gowri and F. H. Samuel, AFS Trans. 101 (1993) 611.Google Scholar
  14. 14.
    G. Gustafsson, T. Thorvaldsson and G. L. Dunlop, Metall. Trans. 17A (1986) 45.CrossRefGoogle Scholar
  15. 15.
    “Wabash Aluminum Alloy Data Book”. (Wabash Alloys, Wabash, IN).Google Scholar
  16. 16.
    L. Backerud, G. Chai and J. Tamminen, “Solidification Characteristics of Aluminum Alloys,” Vol. 2, “Foundry Alloys” (AFS/SKANALUMINIUM, 1990, USA).Google Scholar
  17. 17.
    O. Reiso, H.-G. Overlie and N. Ryum, Metall. Trans. 21A (1990) 1689.CrossRefGoogle Scholar
  18. 18.
    F. Paray and J. E. Gruzleski, Cast Metals 5 (1993) 187.CrossRefGoogle Scholar
  19. 19.
    R. C. Harris, S. Lipson and H. Rosenthal, AFS Trans. 64 (1956) 470.Google Scholar
  20. 20.
    G. P. Ghate, K. S. Srinivas Murthy and K. S. Raman, Aluminium 60 (1984) 18.Google Scholar
  21. 21.
    O. Vorren, J. W. Evensen and T. B. Pedersen, AFS Trans. 92 (1984) 459.Google Scholar
  22. 22.
    R. Dasgupta, C. C. Brown and S. Marek, ibid. 97 (1989) 245.Google Scholar
  23. 23.
    J. L. Jorstad, Soc. Automotive Eng. (1978) 1.Google Scholar
  24. 24.
    G. K. Sigworth, S. Shivkumar and D. Apelian AFS Trans. 97 (1989) 811.Google Scholar
  25. 25.
    F. Klein, “NADCA Die Casting Congress and Exposition,” 30 September–3 October, 1991, Detroit, Paper T91-033, pp. 59–65Google Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • A. M. Samuel
    • 1
  • F. H. Samuel
    • 1
  1. 1.Département des Sciences AppliquéesUniversité du Québec à ChicoutimiChicoutimiCanada

Personalised recommendations