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The Behavior of Intermetallic Compounds at Large Plastic Strains

Published online by Cambridge University Press:  01 January 1992

George T. Gray III  and
J. David Embury
George T. Gray III
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
J. David Embury
Affiliation:
McMaster University, Materials Science Department, Hamilton, Canada.
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Abstract

Much effort has been devoted to the study of ordered materials at modest plastic strains and the problem of premature failure. However by utilizing stress states other than simple tension it is possible to study the deformation of intermetallic compounds up to large plastic strains and to consider the behavior of these materials in the regime where stresses approach the theoretical stress. The current work outlines studies of the work hardening rate of a number of titanium and nickel-based intermetallic compounds deformed in compression. Attention is given to the structural basis of the sustained work hardening. The large strain plasticity of these materials is summarized in a series of diagrams. Fracture in these materials in compression occurs via catastrophic shear at stresses of the order of E/80 (where E is the elastic modulus).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 585
Copyright
Copyright © Materials Research Society 1995

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References

1. Embury, J.D. and Gray, G.T. III, in Modeling of Plastic Deformation and Its Engineering Applications, edited by Anderson, S.I., Bilde-Sorensen, J.B., Hansen, N., Jensen, D. Juul, Leffers, T., Lilholt, H., Lorentzen, T., Pedersen, O.B., and Ralph, B. (Proceedings of 13th Riso Int. Sym. on Matls. Sci., Riso National Laboratory, Roskilde, Denmark, 1992) pp. 39–56.Google Scholar
2. Gray, G.T. III, in Microstructure / Property Relationships in Titanium Aluminides and Alloys. edited by Kim, Young-Won (Y-W.) and Boyer, R.R. (TMS, Pittsburgh, PA, 1991), pp. 263–274.Google Scholar
3. Gray, G.T. III, Hong, S.I., and Marquardt, B.J., in Seventh World Conference on Titanium, (TMS, Pittsburgh, PA, 1993) in press.Google Scholar
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