Advertisement

Tensile Properties and Microstructure of Squeeze Cast Magnesium Matrix Composite Reinforced with 35 Vol. % of AL2O3 Fibers

  • Luyang Ren
  • Xuezhi Zhang
  • Henry HuEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Magnesium alloy AM60 matrix-based composite reinforced with 35 vol. % of Al2O3 fibers were fabricated by preform infiltration and squeeze casting technique under an applied pressure of 90 MPa. For the purpose of comparison, the matrix alloy without reinforcement was also squeeze cast under the same process conditions. Examination of microstructures by both optical microscopy (OM) and scanning electron microscopy (SEM) revealed that alumina fibers were distributed uniformly in the preform. The mechanical properties of the composite were evaluated in comparison with those of the matrix alloy AM60. The Rockwell hardness (HRB) hardness increased from 5.12 to 84.94 as the fiber volume fraction rose from 0 to 35%. The results of tensile testing indicated that the addition of Al2O3 fibres to magnesium alloy AM60 led to a significant improvement in mechanical properties. In particular, the modulus of the composite increased to116 GPA by almost three times over that (40 GPa) of the alloy, while the ultimate tensile strength (UTS) rose from 171.36 to 202.56 MPa by 18%. However, the notable increase in both the modulus and strength was at sacrifice in elongation.

Keywords

Magnesium Composite Alumina fiber Microstructure mechanical properties Squeeze casting 

Notes

Acknowledgements

The authors would like to thank Natural Sciences and Engineering Research Council of Canada (NSERC) and University of Windsor for their financial support.

References

  1. 1.
    Hu H (1998) Squeeze casting of magnesium alloys and their composites. J Mater Sci 33:1579–1589CrossRefGoogle Scholar
  2. 2.
    Banerji A, Hu H, Alpas AT (2013) Sliding wear mechanisms of magnesium composites AM60 reinforced with Al 2O3 fibres under ultra-mild wear conditions. Wear 301:626–635CrossRefGoogle Scholar
  3. 3.
    Ye HZ, Liu XY (2004) Review of recent studies in magnesium matrix composites. J Mater Sci 39:6153–6171CrossRefGoogle Scholar
  4. 4.
    Jayalakshmi S, Satish VK, Seshan S (2002) Tensile behaviour of squeeze cast AM100 magnesium alloy and its Al2O3 fibre reinforced composites. Compos A: Appl Sci Manuf 33(8):1135–1140CrossRefGoogle Scholar
  5. 5.
    Zhang X (2012) Tensile properties and microstructure of Mg (AM60)/Al2O3 metal matrix composite with varying volume fractions of reinforcement. M.A.Sc. thesis, University of WindsorGoogle Scholar
  6. 6.
    Yong MS, Clegg AJ (2004) Process optimization for a squeeze cast magnesium alloy. J Mater Process Technol 145(1):134–141CrossRefGoogle Scholar
  7. 7.
    Zhang Q, Hu H (2009) Processing and characterization of Al-based hybrid composites. Paper presented at the 141st TMS annual meeting, San Francisco, 15–19 Feb 2009Google Scholar
  8. 8.
    Musson NJ, Yue TM (1991) The effect of matrix composition on the mechanical properties of squeeze cast aluminum alloy-Saffil metal matrix composites. Mater Sci Eng: A 135:237–242CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.Department of Mechanical, Automotive and Materials EngineeringUniversity of WindsorWindsorCanada

Personalised recommendations