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Relationship between Nb concentration and stability of α, ω, β phases in Ti-Nb alloys.
- Source :
-
Materials Research Innovations . Jul2014 Supplement 4, Vol. 18 Issue S4, p215-S4-219. 5p. - Publication Year :
- 2014
-
Abstract
- The effect of Nb content on the lattice parameters and relative stability of α, β and ω phases in Ti1-xNbx (0< x≤0·30) alloys was investigated using the exact muffin-tin orbitals method in combination with the coherent potential approximation. For ω phase, the value of a increases and c/ a decreases almost linearly with increasing Nb concentration. Whereas in the case of α phase, the lattice constant a and the value of c/ a increase with the increasing Nb content. The critical Nb concentration for the complete stabilisation of β phase at 0 K is 26 at-%. An approximate composition range in which the ω phase exist is between 17 and 26 at-%Nb. The Nb addition enhances the stability of β phase relative to ω and α. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14328917
- Volume :
- 18
- Issue :
- S4
- Database :
- Academic Search Index
- Journal :
- Materials Research Innovations
- Publication Type :
- Academic Journal
- Accession number :
- 97352359
- Full Text :
- https://doi.org/10.1179/1432891714Z.000000000680