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Interface structure and fractography of a magnesium-alloy, metal-matrix composite reinforced with SiC particles

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Abstract

The interfacial structure in SiC-particle-reinforced, as-cast and heat-treated magnesium-alloy-matrix composites was investigated using analytical electron microscopy. No extensive chemical reactions were observed between the magnesium and the SiC particles or the SiC and the eutectic phase. However, most of the eutectic phase appeared to nucleate at the surface of the SiC particles. In addition to the lamellar eutectic, a fine eutectic and Mg2Si particles have been identified at the SiC surface using nanoprobe micro-analysis. As with the aluminium base composite, precipitation was observed to take place on dislocations, and dense precipitation was found to occur in the stress fields around the SiC particles. Examination of the fracture surface indicated that the bonding between the SiC/eutectic is stronger than between the SiC/magnesium matrix. Intergranular cracks have been observed both in the fracture surface and also in a polished and etched section. The fracture surface tends to exhibit a more brittle morphology in the composite than is observed in the alloy.

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References

  1. K. K. Chawla,J. Mater. Sci. 25 (1990) 1563–1567.

    Google Scholar 

  2. I. W. Hall,J. Mater. Sci. 26 (1991) 776.

    Google Scholar 

  3. E. Horikoshi, T. Ikawa andT. Sato, “B/Mg-Al sintered composite alloys,” Fujitsu Laboratory, Morinosato, Wakamiya, Japan.

  4. M. Suery, in Proceedings of the Interface in MMC's, edited by S. G. Fishman (The Mineral, Metals and Materials Society, Pennsylvania, 1989) p. 102.

    Google Scholar 

  5. E. S. Chin, A report on TEM study of FR/Mg, Army Laboratory, Massachusetts Materials Technology Laboratory, January 1987.

  6. S. W. Rawal andM. S. Misra, in Proceedings of Conference on the Interface in Polymer, Ceramic and Metal Matrix Composites, Cleveland, June 1988, edited by I. Hatsu (Elsevier, Amsterdam, 1988) p. 179.

    Google Scholar 

  7. S. W. Rawal, L. F. Allard andM. S. Misra, in Proceedings of the Interface in Metal Matrix Composites, New Orleans, 1986, edited by A. K. Dhingra and S. G. Fishman (AIME, 1986) p. 92.

  8. S. W. Rawal, L. F. Allard andM. S. Misra, in Proceedings of the Sixth International Conference on Composite Materials, The Second European Conference on Composites Materials, London, July, 1987, edited by F. L. Matthews, N. C. R. Buskell, J. M. Hodgkinson and J. Morton (Elsevier, Amsterdam, 1987) Vol. 2, p. 169.

    Google Scholar 

  9. B. Inem, N. Han, G. Pollard, R. Stevens, in Proceedings of the International Conference on Advanced Materials, “ICAM91”, Strasbourg, May 1991, edited by A. T. Benedotto, L. Nicholas and R. Watanabe (Elsevier, Amsterdam, 1992) p. 173.

    Google Scholar 

  10. C. H. Li, L. Nyborg, R. Warren andI. Olefjord, in Proceedings of Composite Materials '89 on Interface Phenomena in Composites, Sheffield, September, 1989 edited by F. R. Jones, (Butterworths, Kent, 1989) p. 253.

    Google Scholar 

  11. R. C. J. Schieperes, J. A. van Beck, F. J. J. van Loo andG. de With, in Proceedings of the Sixth International Conference on Composite Materials, Second European Conference on Composites Materials, London, July, 1987, edited by F. L. Matthews, N. C. R. Buskell, J. M. Hodgkinson and J. Morton, (Elsevier, Amsterdam, 1987), Vol. 4, p. 424.

    Google Scholar 

  12. R. J. Arsenault andS. B. Wu,Scripta Metall. 22 (1988) 767.

    Google Scholar 

  13. H. J. Rack andP. K. Chaudhury, in Proceedings of a Symposium on Light-Weight Alloys for Aerospace Application, Las Vegas, March 1989, edited by E. W. Lee, E. H. Chia, and N. J. Kim, (The Metallurgical Society, 1989) p. 345.

  14. B. Inem andG. Pollard, in Proceedings of the Second European Conference on Advanced Materials and Processess, “EUROMAT 91”, Cambridge, July 1991, (1992 in press).

  15. N. L. Hansen, T. A. Enghand andO. Lohne, “Interface in Metal Ceramic Composites”, edited by R. Y. Lin, R. J. Arsenault, G. P. Martins and S. G. Fishman, (The Mineral, Metals and Materials Society, Pennsylvania, 1989).

    Google Scholar 

  16. W. H. Hunt, O. Richmond andR. D. Young, in Proceedings of the Sixth International Conference on Composite Materials, Second European Conference on Composites Materials, London, July 1987, edited by F. L. Matthews, N. C. R. Buskell, J. M. Hodgkinson and J. Morton, (Elsevier, Amsterdam, 1987) Vol. 2, p. 209.

    Google Scholar 

  17. D. J. Lloyd Acta Metall. 39(1) (1991) 59.

    Google Scholar 

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Inem, B., Pollard, G. Interface structure and fractography of a magnesium-alloy, metal-matrix composite reinforced with SiC particles. J Mater Sci 28, 4427–4434 (1993). https://doi.org/10.1007/BF01154952

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  • DOI: https://doi.org/10.1007/BF01154952

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