Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-28T04:35:10.122Z Has data issue: false hasContentIssue false
  • English
  • Français

Indentation fracture toughness of amorphous steel

Published online by Cambridge University Press:  01 April 2005

Peter A. Hess ,
S. Joseph Poon ,
G.J. Shiflet  and
Reinhold H. Dauskardt
Peter A. Hess
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, California 94305-2205
S. Joseph Poon
Affiliation:
Department of Physics, University of Virginia, Charlottesville, Virginia 22904-4714
G.J. Shiflet
Affiliation:
Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904-4745
Reinhold H. Dauskardt*
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, California 94305-2205
*
a) Address all correspondence to this author. e-mail: dauskardt@stanford.edu
Get access

Abstract

Indentation fracture toughness experiments were performed on amorphous steel. Measured toughness values were 3.2 ± 0.3 MPa for 3-mm-thick specimens and 3.8 ± 0.3 MPa for 10-mm-thick specimens. Crack geometry was determinedto be of the “Palmqvist” or radial configuration. High indentation loads >40 N were necessary for crack formation, and indentation cracks did not form adjacent to every indent, or in a uniform pattern. Possible reasons for crack formation thresholds and geometry are discussed.

Keywords

FractureHardnessMetallic glass
Type
Rapid Communication
Information
Journal of Materials Research , Volume 20 , Issue 4 , April 2005 , pp. 783 - 786
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Ponnambalam, V., Poon, S.J., Shiflet, G.J., Keppens, V.M., Taylor, R. and Petculescu, G.: Synthesis of iron-based bulk metallic glasses as nonferromagnetic amorphous steel alloys. Appl. Phys. Lett. 83, 1131 (2003).10.1063/1.1599636CrossRefGoogle Scholar
2. Inoue, A., Shen, B.L. and Chang, C.T.: Super-high strength of over 4000 MPa for Fe-based bulk glassy alloys in [(Fe1-xCox)0.75B0.2Si0.05]96Nb4 system. Acta Mater. 52, 4093 (2004).10.1016/j.actamat.2004.05.022CrossRefGoogle Scholar
3. Ponnambalam, V., Poon, S.J. and Shiflet, G.J.: Fe-based bulk metallic glasses with diameter thickness larger than one centimeter. J. Mater. Res. 19, 1320 (2004).CrossRefGoogle Scholar
4. Lu, Z.P., Liu, C.T., Thompson, J.R. and Porter, W.D.: Structural amorphous steels. Phys. Rev. Lett. 92, 245503 (2004).CrossRefGoogle ScholarPubMed
5. Lewandowski, J.J.: Effects of annealing and changes in stress state on fracture toughness of bulk metallic glass. Mater. Trans. JIM 42, 633 (2001).CrossRefGoogle Scholar
6. Flores, K.M. and Dauskardt, R.H.: Local heating associated with crack tip plasticity in Zr–Ti–Ni–Cu–Be bulk amorphous metals. J. Mater. Res. 14, 638 (1999).CrossRefGoogle Scholar
7. Flores, K.M. and Dauskardt, R.H.: Enhanced toughness due to stable crack tip damage zones in bulk metallic glass. Scripta Mater. 41, 937 (1999).CrossRefGoogle Scholar
8. Suh, D. and Dauskardt, R.H.: Effects of open-volume regions on relaxation time scales and fracture behavior of a Zr–Ti–Ni–Cu–Be bulk metallic glass. J. Non-Crys. Solids 317, 181 (2003).CrossRefGoogle Scholar
9. E399-90, Standard test method for plane-strain fracture toughness of metallic materials, in 1993 Annual Book of ASTM Standards (American Society of Testing and Materials, Philadelphia, PA, 1993).Google Scholar
10. Bhatnager, A., Hoffman, M.J. and Dauskardt, R.H.: Fracture and subcritical crack-growth behavior of Y–Si–Al–O–N glasses and ceramics. J. Am. Ceram. Soc. 83, 585 (2000).CrossRefGoogle Scholar
11. Lawn, B.R. and Wilshaw, R.: Indentation fracture: Principles and applications (review). J. Mater. Sci. 10, 1049 (1975).CrossRefGoogle Scholar
12. Anstis, G.R., Chantikul, P., Lawn, B.R. and Marshall, D.B.: A critical evaluation of indentation techniques for measuring fracture toughness: I. Direct crack measurements. J. Am. Ceram. Soc. 64, 533 (1981).CrossRefGoogle Scholar
13. Cook, R.F. and Pharr, G.M.: Direct observation and analysis of indentation cracking in glasses and ceramics (review). J. Am. Ceram. Soc. 73, 787 (1990).CrossRefGoogle Scholar
14. Niihara, K., Morena, R. and Hasselman, D.P.H.: Evaluation of K Ic of brittle solids by the indentation method with low crack-to-indent ratios. J. Mater. Sci. Lett. 1, 13 (1982).CrossRefGoogle Scholar
15. Flores, K.M. and Dauskardt, R.H.: Crack-tip plasticity in bulk metallic glasses. Mat. Sci. Eng. A A319–321, 511 (2001).CrossRefGoogle Scholar
16. Wright, W.J., Saha, R. and Nix, W.D.: Deformation mechanisms of the Zr40Ti14Ni10Cu12Be24 bulk metallic glass. Mater. Trans. JIM 42, 642 (2001).CrossRefGoogle Scholar
17. Flores, K.M. and Dauskardt, R.H.: Fracture and deformation of metallic glasses and their composites. Intermetallics 12, 1025 (2004).CrossRefGoogle Scholar
18. Suh, D. and Dauskardt, R.H.: Effects of pre-charged hydrogen on the mechanical and thermal behavior of Zr–Ti–Ni–Cu–Be bulk metallic glass alloys. Mater. Trans. JIM 42, 638 (2001).CrossRefGoogle Scholar