Journal of Materials Science

, Volume 44, Issue 22, pp 6035–6039 | Cite as

Synthesis and mechanical behavior of ternary Mg–Cu–Dy in situ bulk metallic glass matrix composite

  • X. F. WuEmail author
  • Y. Si
  • Z. Y. Suo
  • Y. Kang
  • K. Q. Qiu


In situ Mg phase reinforced Mg70Cu17Dy13 bulk metallic glass (BMG) matrix composite with diameter of 3 mm was fabricated by conventional Cu-mold casting method. The results show that the Mg-based BMG matrix composite exhibits some work hardening except for initial elastic deformation, a high fracture compressive strength of 702 MPa, which is 1.125 times higher than single-phase Mg60Cu27Dy13 BMG and some plastic strain of 0.81%. The improvement of the mechanical properties is attributed to the fact that the Mg phase distributed in the amorphous matrix of the alloy has some effective load bearing and plastic deformation ability to restrict the expanding of shear bands and cracks and produce its own plastic deformation, which was proved by the shear deforming and fracturing mode and the fracture surfaces characterized by the vein pattern, severe remelting, and the very rough and bumpy region of the alloy.


Shear Band Bulk Metallic Glass Vein Pattern High Fracture Strength Amorphous Matrix Composite 



Funding by the Natural Science Foundation of Liaoning Province under Grant No. 20032137 is gratefully acknowledged.


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • X. F. Wu
    • 1
    Email author
  • Y. Si
    • 1
  • Z. Y. Suo
    • 2
  • Y. Kang
    • 1
  • K. Q. Qiu
    • 2
  1. 1.School of Materials and Chemical EngineeringLiaoning University of TechnologyJinzhouPeople’s Republic of China
  2. 2.School of Materials Science and EngineeringShenyang University of TechnologyShenyangPeople’s Republic of China

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