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A new high-pressure phase transition in a zirconium-niobium alloy |
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| Authors: | G. K. Dey R. Tewari S. Banerjee G. Jyoti S. C. Gupta K. D. Joshi |
| Affiliation: | 1. Department of Electronic and Electrical Engineering , University of Sheffield , Mappin Street, Sheffield, S1 3JD, England;2. Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de Mexico , Apartado Postal 70-360, 04510, Mexico, D.F., Mexico;3. Department of Materials Engineering , University College , Singleton Park, Swansea, SA2 8PP, Wales |
| Abstract: | It is reported for the first time that a g M y transformation can be induced in a g -stabilized zirconium alloy subjected to shock pressure. The y phase formed in the g matrix has been found to have a plate shape akin to martensitic plates. The lattice correspondence between the g and y structures has been found to be the same as that produced by thermal treatment. The formation of the plate-shaped y phase is explained in terms of a mechanism involving shear on <112> planes of the bcc lattice and the mechanical instability of the g phase. |
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