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Preparation, Structure and Mechanical Properties of RuAl and (Ru,Ni)Al Alloys

Published online by Cambridge University Press:  15 February 2011

A. L. R. Sabariz  and
G. Taylor
A. L. R. Sabariz
Affiliation:
Department of Materials, University of Oxford, Oxford OX1 3PH, U.K.
G. Taylor
Affiliation:
Department of Materials, University of Oxford, Oxford OX1 3PH, U.K.
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Abstract

The intermetallic compound, RuAl with B2 CsCl type structure, has been shown to possess room-temperature toughness and plasticity. NiAl also forms a B2 compound and it is claimed that a pseudo-binary compound, (Ru,Ni)Al, may be formed because the difference in lattice parameter between the two binary phases is slight. In this work a study has been made of the mechanical properties of some polycrystalline compounds, across the RuAl-(Ru,Ni)Al pseudo-binary, prepared from high-purity elemental powders. Compressive yield stresses were measured between room-temperature and 900°C, and the mechanisms of plastic flow are discussed in relation to the dislocation structures observed by TEM. Hot-microhardness tests were made to provide an indication of the effect of solid-solution hardening.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 460: Symposium Z – High-Temperature Ordered Intermetallic Alloys VII , 1996 , 611
Copyright
Copyright © Materials Research Society 1997

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References

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