Metallurgical Transactions A

, Volume 14, Issue 8, pp 1671–1679 | Cite as

Deformation processing of an aluminum alloy containing particles: Studies on AI-5 pct Si alloy 4043

  • K. P. Rao
  • S. M. Doraivelu
  • H. Md. Roshan
  • Y. V. R. K. Prasad
Mechanical Behavior

Abstract

Al-5 wt pct Si alloy is processed by upset forging in the temperature range 300 K to 800 K and in the strain rate range 0.02 to 200 s−1. The hardness and tensile properties of the product have been studied. A “safe” window in the strain rate-temperature field has been identified for processing of this alloy to obtain maximum tensile ductility in the product. For the above strain rate range, the temperature range of processing is 550 K to 700 K for obtaining high ductility in the product. On the basis of microstructure and the ductility of the product, the temperature-strain rate regimes of damage due to cavity formation at particles and wedge cracking have been isolated for this alloy. The tensile fracture features recorded on the product specimens are in conformity with the above damage mechanisms. A high temperature treatment above ≈600 K followed by fairly fast cooling gives solid solution strengthening in the alloy at room temperature.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    W. A. Backofen:Fundamentals of Deformation Processing, Syracuse University Press, New York, NY, 1964, p. 1.Google Scholar
  2. 2.
    P. J. Wray:J. Appl. Phys., 1969, vol. 40, p. 4018.CrossRefGoogle Scholar
  3. 3.
    R. Raj:Metall. Trans. A, 1981, vol. 12A, p. 1089.Google Scholar
  4. 4.
    H.C. Rogers, L. F. C ffin Jr.:Int. J. Mech. Sci., 1971, vol. 13, p. 141.CrossRefGoogle Scholar
  5. 5.
    S.M. Doraivelu and V. Gopinathan:18th Int. MTDR Conf, J.M. Alexander, ed., Imperial College, London, Macmillan, Oxford, 1978, p. 37.Google Scholar
  6. 6.
    H.J. McQueen, J. Sankar, and S. Fulop:Mechanical Behavior of Materials, K.J. Miller and R. F. Smith, eds., Pergamon Press, New York, NY, 1979, vol. 2, ICM3, p. 675.Google Scholar
  7. 7.
    R.C. Koeller and R. Raj:Acta Metall., 1978, vol. 26, p. 1551.CrossRefGoogle Scholar
  8. 8.
    C. Gandhi and R. Raj:Metall. Trans. A, 1981, vol. 12A, p. 515.Google Scholar

Copyright information

© The Metallurgical of Society of AIME 1983

Authors and Affiliations

  • K. P. Rao
    • 1
  • S. M. Doraivelu
  • H. Md. Roshan
    • 2
    • 3
  • Y. V. R. K. Prasad
    • 4
    • 5
  1. 1.Metal Forming Laboratory, Department of MetallurgyIndian Institute of TechnologyMadrasIndia
  2. 2.Indian Institute of TechnologyMadras
  3. 3.Tamil Nadu Alloy Foundry Company Ltd.HosurIndia
  4. 4.Department of MetallurgyIndian Institute of ScienceBangaloreIndia
  5. 5.AFWAL (MLLM)Dayton

Personalised recommendations