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Evolution and Interaction of Dislocations in Intermetallics: Fully Anisotropic Discrete Dislocation Dynamics Simulations

Published online by Cambridge University Press:  26 February 2011

Qian Chen
Affiliation:
sbbiner@iastate.eduAmes LaborotaryMaterials and Engineering Physics208 Metals DevelopmentIowa State UniversityAmes IA 50011United States
Bulent Biner
Affiliation:
sbbiner@iastate.edu, Ames Laboratory(USDOE), Iowa State University, Ames, IA, 50011, United States
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Abstract

In this study, the origin of large ductility that is seen in recently discovered rare-earth intermetallic compounds: YCu, YAg and YZn is explored by using fully anisotropic 3D dislocation dynamics simulations. The stability of the glide dislocations, the behavior of the Frank-Read sources and the strength of junctions are evaluated and compared to those seen for the common intermetallics, NiAl and Fe-25Al.

Type
Research Article
Copyright
Copyright © Materials Research Society 2007

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References

REFERENCES

1. Shi, X., Mahajan, S., Pollock, T.M. and Arunachalam, V.S., Phil. Mag. A. 79, 1555 (1999).Google Scholar
2. Liu, C.T., Stringer, J., Mundy, J.N., Horton, L.L., Angelini, P., Intermetallics 5, 579 (1997).Google Scholar
3. Gschneidner, K. Jr., Russell, A., Pecharsky, A., Morris, J.R., Zhang, Z., Lograsso, T., Hsu, D., Lo, C.H. C., Ye, Y., Slager, A. and Kesse, D., Nature Mat. 2, 587 (2003).Google Scholar
4. Mura, T., Phil. Mag. 3, 625 (1963).Google Scholar
5. Stroh, A.N., Phil. Mag. 3, 625 (1958).Google Scholar
6. Barnett, D.M., Phys. Stat. Sol. (b), 49, 741 (1972).Google Scholar
7. Chen, Q. and Biner, S.B. (to be published).Google Scholar
8. Chen, Q. and Biner, S. B., Acta Mater. 53, 3215 (2005)Google Scholar
9. W.Püschl, Phys. Stat. Sol. (a) 90, 181 (1985)Google Scholar