Advertisement

Journal of Materials Science

, Volume 29, Issue 17, pp 4645–4650 | Cite as

Effect of thermal ageing on hardness, tensile and impact properties of an alumina microsphere-reinforced aluminium metal-matrix composite

  • J. P. Unsworth
  • S. Bandyopadhyay
Papers

Abstract

Thermal ageing studies have been carried out with an alumina microsphere-reinforced 6061 aluminium metal-metrix composite (MMC). A solution treatment temperature of 530°C for 1.5 h and ageing temperature 175°C with ageing time ranging between 0 and 12 h have been used. It was observed that the hardness achieves a peak value in about 8 h; the ultimate tensile strength shows an increase with increasing ageing time, and reaches a plateau at about 10 h. On the other hand, elongation to failure and impact properties show a sharp decline at approximately 4 h of ageing time. Also, a limited amount of experiments using 175°C/8 h ageing after solution treatment at 510, 490, 470 and 430 °C for 1.5 h show that the hardness of the MMC deceases steadily as the solution treatment temperature is decreased.

Keywords

Polymer Alumina Tensile Strength Material Processing Treatment Temperature 
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.
    D. L. McDanels, Met. Trans. 16A (1985) 1105.CrossRefGoogle Scholar
  2. 2.
    N. Wang, Z. Wang and G. C. Weatherly, in “Proceeding of Conference on Fabrication of Particulates Reinforced Metal Composites, Montreal, Canada, September 1990, edited by J. Masounave et al. (ASM International, 1990). p. 145.Google Scholar
  3. 3.
    I. Salvo, M. Suery and F. Decomps, ibid. p. 139.Google Scholar
  4. 4.
    D. F. Hasson, S. M. Hoover and C. R. Crowe, J. Mater. Sci. 20 (1985) 4147.CrossRefGoogle Scholar
  5. 5.
    C. Badini, F. Marino and A. Tomasi, ibid. 26 (1991) 6279.CrossRefGoogle Scholar
  6. 6.
    M. J. Couper and K. Xia, in “Proceeding of 12th Risø International Symposium on Materials Science: Metal Matrix Composites — Processing, Microstructure and Properties”, edited by N. Hansen, D. Juul Jenser, T. Leffers, H. Liholt, T. Lorenzen, A. S. Pedersen, O. B. Pedersen and B. Ralph, (Risø National Laboratory, Denmark, 1991) p. 291.Google Scholar
  7. 7.
    T. DAS (University of New South Wales), unpublished results (1991).Google Scholar
  8. 8.
    S. Bandyopadhyay, T. Das and S. Blairs, J. Mater. Eng. Performance 1(6) (1992) 839.CrossRefGoogle Scholar
  9. 9.
    S. Bandyopadhyay, I. A. Burch and R. Muscat, in Proceedings of the 1990 Symposium of the Australian Fracture Group, (3–4 December, 1990), edited by Y. W. Hai, p. 140.Google Scholar

Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • J. P. Unsworth
    • 1
  • S. Bandyopadhyay
    • 1
  1. 1.School of Materials Science and EngineeringUniversity of New South WalesKensingtonAustralia

Personalised recommendations