Three-point bending fracture characteristics of bulk metallic glasses

Abstract

This paper presents the SEM micrographs for the three-point bending fracture surfaces of Zr-based, Ce-based and Mg-based bulk metallic glasses (BMGs), which show the dimple structures in the three kinds of BMGs. The shapes of the giant plastic deformation domain on the fracture surface are similar but the sizes are different. The fracture toughness K C and the dimple structure size of the Zr-based BMG are both the largest, and those of the Mg-based BMG are the smallest. The fracture toughness K C and the dimple structure size of the Ce-based BMG are between those of the Zr-based and the Mg-based BMG. Through analyzing the data of different fracture toughnesses of the BMGs, we find that the plastic zone width follows w = (K C/σ Y)2/(6π).

This is a preview of subscription content, access via your institution.

References

  1. 1

    Courtney T H. Mechanical Behavior of Materials. Beijing: Mechanical Industry Press, 2004

    Google Scholar 

  2. 2

    Yu Z S. Metal Physics. Beijing: Metallurgical Industry Press, 1981

    Google Scholar 

  3. 3

    Xi X K, Zhao D Q, Pan M X, et al. Fracture of brittle metallic glasses: Brittleness or plasticity. Phys Rev Lett, 2005, 94: 125510-1–4

    Article  ADS  Google Scholar 

  4. 4

    Wang W H. Correlations between elastic moduli and properties in bulk metallic glasses. J Appl Phys, 2006, 99: 093506-1–10

    ADS  Google Scholar 

  5. 5

    Wang W H, Dong C, Shek C H. Bulk metallic glass. Mater Sci Eng R, 2004, 44: 45–89

    Article  Google Scholar 

  6. 6

    Xiao H X, Chen G. Preparation of plate Fe-based bulk amorphous alloy and measurement of its fracture toughness. Ordn Mater Sci Eng, 2004, 27(02): 23–26

    Google Scholar 

  7. 7

    Wang G, Wang Y T, Liu Y H, et al. The evolution of nanoscale morphology on fracture surface of brittle metallic glass. Appl Phys Lett, 2006, 89(12): 1909–1916

    ADS  Google Scholar 

  8. 8

    Li J X, Chu W Y, Gao K W, et al. In situ SEM study of initiating of shear band and microcrack in bulk metallic grass. Acta Metall Sin, 2003, 39(4): 359–363

    Google Scholar 

  9. 9

    Heilmaier M. Deformation behavior of Zr-based metallic glasses. J Mater Pro Tech, 2001, 117(24): 374–380

    Article  Google Scholar 

  10. 10

    Bakke E, Johnson W L. The viscosity of the Zr46.75Ti8.25Cu7.5Ni10-Be27.5 bulk metallic glass forming alloy in the supercooled liquid. Appl Phy Lett, 1995, 67(22): 3260–3262

    Article  ADS  Google Scholar 

  11. 11

    Deng Y F, Yang F, Yang J L, et al. Direct observations of localized free volume increases in a bulk metallic glass fractured by uniaxial compression at room temperature. Acta Metall Sin, 2006, 46(22): 2662–2678

    Google Scholar 

  12. 12

    Zarzycki J. Glass and Amorphous Materials (V9). Beijing: Science Press, 2001

    Google Scholar 

  13. 13

    Rabinovitch A, Frid V, Bahat D. Wallner lines revisited. J Appl Phys, 2006, 99: 76102-1–3

    Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to ZhenJun Fan.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Fan, Z., Zheng, Z. & Jiao, Z. Three-point bending fracture characteristics of bulk metallic glasses. Sci. China Phys. Mech. Astron. 53, 654–657 (2010). https://doi.org/10.1007/s11433-010-0155-5

Download citation

Keywords

  • metallic glass
  • fracture surface
  • tree-point bending