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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
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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

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References

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