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Mechanical properties of single-quasicrystalline AlCuCoSi

Published online by Cambridge University Press:  31 January 2011

R. Wittmann ,
K. Urban ,
M. Schandl  and
E. Hornbogen
R. Wittmann
Affiliation:
Institut für Festkörperforschung, Forschungszentrum Jülich, Postfach 1913, W-5170 Jülich, Germany
K. Urban
Affiliation:
Institut für Festkörperforschung, Forschungszentrum Jülich, Postfach 1913, W-5170 Jülich, Germany
M. Schandl
Affiliation:
Lehrstuhl Werkstoffwissenschaft, Ruhr-Universität Bochum, Postfach 102148, W-4630 Bochum, Germany
E. Hornbogen
Affiliation:
Lehrstuhl Werkstoffwissenschaft, Ruhr-Universität Bochum, Postfach 102148, W-4630 Bochum, Germany
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Abstract

The mechanical properties of single-quasicrystals of decagonal AlCoCuSi have been studied for the first time by applying the Vickers indentation method. The hardness has been determined as H ≃ 9.6 MPa. Estimates for the modulus of elasticity and the fracture toughness are given. The quasicrystals are highly strained internally. Scratching experiments show slight anisotropies in the abrasive friction coefficient. The dominant abrasive mechanism is microplowing.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 6 , June 1991 , pp. 1165 - 1168
Copyright
Copyright © Materials Research Society 1991

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