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Indentation fracture toughness of amorphous steel

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Abstract

Indentation fracture toughness experiments were performed on amorphous steel. Measured toughness values were 3.2 ± 0.3 MPa √m for 3-mm-thick specimens and 3.8 ± 0.3 MPa √m for 10-mm-thick specimens. Crack geometry was determined to 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.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Stanford University, Stanford, California, 94305-2205, USA

    Peter A. Hess & Reinhold H. Dauskardt

  2. Department of Physics, University of Virginia, Charlottesville, Virginia, 22904-4714, USA

    S. Joseph Poon

  3. Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia, 22904-4745, USA

    G. J. Shiflet

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  1. Peter A. Hess
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  2. S. Joseph Poon
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  3. G. J. Shiflet
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  4. Reinhold H. Dauskardt
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Correspondence to Reinhold H. Dauskardt.

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Hess, P.A., Poon, S.J., Shiflet, G.J. et al. Indentation fracture toughness of amorphous steel. Journal of Materials Research 20, 783–786 (2005). https://doi.org/10.1557/JMR.2005.0104

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  • DOI: https://doi.org/10.1557/JMR.2005.0104

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