Journal of Materials Science

, Volume 30, Issue 20, pp 5251–5258 | Cite as

Structure and properties of aligned short fibre-reinforced intermetallic matrix composites

  • D. E. Alman
  • N. S. Stoloff
  • A. Bose
  • R. M. German


Powder injection moulding techniques were utilized to align short fibres (Al2O3 and SiC) in a variety of intermetallic matrices (NiAl, MoSi2 and TaTiAl2). The alignment was accomplished by extruding a mixture of powders and short fibres with a polymer-based binder through a constricting nozzle. The binder was removed and the powder and fibres were consolidated, producing an aligned short fibrous composite. The effects of powder morphology, fibre volume fraction and fibre diameter on the alignment were demonstrated. Small diameter powders were required to ensure alignment of an appreciable loading of fibres in a powder matrix. Tensile and hardness tests were used to evaluate the effectiveness of the aligned short fibres to strengthen and toughen the matrices. The mechanical behaviour of these aligned short fibrous composites were found to be comparable to similar aligned continuous fibrous composites produced by conventional techniques.


Al2O3 NiAl Matrix Composite Fibre Diameter Hardness Test 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    K. K. Chawla “Composite Materials” (Springer, Berlin, 1987).CrossRefGoogle Scholar
  2. 2.
    P. K. Brindley, in “High Temperature Ordered Intermetallic Alloys II”, edited by N. S. Stoloff, C. C. Koch, C. T. Liu and O. Izumi, MRS Symposium Proceedings Vol. 81 (MRS, Pittsburgh, PA, 1987) p. 419.Google Scholar
  3. 3.
    M. J. Maloney and R. J. Hecht, Mater. Sci. Eng. A155 (1992) 19.CrossRefGoogle Scholar
  4. 4.
    D. L. Anton, in “High Temperature/High Performance Composites”, edited by F. D. Lemkey, S. G. Fishman, A. G. Evans and J. R. Strife, MRS Symposium Proceedings Vol. 120 (MRS, Pittsburgh, PA, 1988) p. 57.Google Scholar
  5. 5.
    D. M. Shah and D. L. Anton, in “Proceedings of the First International Symposium on Structural Intermetallics”, edited by R. Darolia, J. J. Lewandowski, C. T. Liu, P. L. Martin, D. B. Miracle and M. V. Nathal (TMS, Warrendale, PA, 1993) p. 755.Google Scholar
  6. 6.
    R. M. German and A. Bose, Mater. Sci. Eng. A107 (1989) 107.CrossRefGoogle Scholar
  7. 7.
    A. Bose and R. M. German, Adv. Mater. Manuf. Process 3 (1988) 37.Google Scholar
  8. 8.
    D.E. Alman and N.S. Stoloff, Int. J. Powder Metall. 27 (1) (1991) 29.Google Scholar
  9. 9.
    D. E. Alman and N. S. Stoloff, in “Low Density, High Temperature Powder Metallurgy Alloys”, edited by W. E. Fraizer et al. (TMS, Warrendale, PA, 1991) p. 109.Google Scholar
  10. 10.
    A. Bose, D. E. Alman and N. S. Stoloff, in “Advances in Powder Metallurgy and Particulate Materials-1992”, Vol. 9, “Particulate Materials and Processes”, edited by J. M. Capus and R. M. German (MPIF/APMI, Princeton, NJ, 1992) p. 209.Google Scholar
  11. 11.
    R. M. German, “Powder Injection Moulding” (MPIF/APMI, Princeton, NJ, 1990).Google Scholar
  12. 12.
    D. L. Anton and D. M. Shah, in “Intermetallic Matrix Composites II”, edited by D. B. Miracle, D. L. Anton and J. A. Graves, MRS Symposium Proceedings Vol. 273 (MRS, Pittsburgh, PA, 1992) p. 157.Google Scholar
  13. 13.
    R. R. Bowman, ibid.“, p. 145.Google Scholar
  14. 14.
    J. C. Romine, Ceram. Engr. Sci. Proc. 8 (7–8) (1987) 755.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • D. E. Alman
    • 1
  • N. S. Stoloff
    • 1
  • A. Bose
    • 2
  • R. M. German
    • 3
  1. 1.Materials Engineering DepartmentRensselaer Polytechnic InstituteTroyUSA
  2. 2.Research and DevelopmentParmatech CorporationPetalumaUSA
  3. 3.Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkUSA

Personalised recommendations