Titanium segregation mechanism in deformed vanadium-titanium alloys |
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| Authors: | M Varela B Fernandez A Munoz T Leguey R Pareja C Ballesteros |
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| Institution: | 1. Department of Metallurgical and Materials Engineering , Colorado School of Mines , Golden, CO, USA mkaufman@mines.edu;3. VITALD L.L.C. , Hilliard, OH, USA |
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| Abstract: | Deformed V-Ti alloys with 0.3-5at.% Ti have been characterized by transmission electron microscopy and X-ray diffraction. A mechanism for Ti segregation during annealing, related to the formation of deformation twins, has been identified. Energy-dispersive X-ray spectroscopy indicates strong local changes in Ti content along the twins. Samples post-deformation annealed at 1473K show Ti segregation and the formation of Ti-rich precipitates which have been identified using electron microdiffraction and X-ray spectroscopy. X-ray diffraction measurements reveal changes in the lattice parameter of the alloys induced by the Ti segregation and the precipitation processes. |
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