Relationship between Nb concentration and stability of α, ω, β phases in Ti-Nb alloys

The effect of Nb content on the lattice parameters and relative stability of α, β and ω phases in Ti 1-x Nb x (0

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Published in:Materials research innovations 2014-07, Vol.18 (sup4), p.S4-215-S4-219
Main Authors: Meng, C. S., Tang, B., Ou, W. C., Kou, H. C., Li, J. S.
Format: Article
Language:English
Subjects:
Alloys
Approximation
Concentration (composition)
EMTO-CPA
Lattice parameters
Niobium
Phases
Stability
Ti-Nb alloys
Titanium base alloys
ω phase
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cites cdi_FETCH-LOGICAL-c297t-199624e5fd87cbac483bc060dd706a220636cb5a0a2ba3b534b40185c8dc51123
container_end_page S4-219
container_issue sup4
container_start_page S4-215
container_title Materials research innovations
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creator Meng, C. S.
Tang, B.
Ou, W. C.
Kou, H. C.
Li, J. S.
description The effect of Nb content on the lattice parameters and relative stability of α, β and ω phases in Ti 1-x Nb x (0
doi_str_mv 10.1179/1432891714Z.000000000680
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S. ; Tang, B. ; Ou, W. C. ; Kou, H. C. ; Li, J. S.</creator><creatorcontrib>Meng, C. S. ; Tang, B. ; Ou, W. C. ; Kou, H. C. ; Li, J. S.</creatorcontrib><description>The effect of Nb content on the lattice parameters and relative stability of α, β and ω phases in Ti 1-x Nb x (0&lt;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.</description><identifier>ISSN: 1432-8917</identifier><identifier>EISSN: 1433-075X</identifier><identifier>DOI: 10.1179/1432891714Z.000000000680</identifier><language>eng</language><publisher>Taylor &amp; Francis</publisher><subject>Alloys ; Approximation ; Concentration (composition) ; EMTO-CPA ; Lattice parameters ; Niobium ; Phases ; Stability ; Ti-Nb alloys ; Titanium base alloys ; ω phase</subject><ispartof>Materials research innovations, 2014-07, Vol.18 (sup4), p.S4-215-S4-219</ispartof><rights>W. S. 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S.</creatorcontrib><title>Relationship between Nb concentration and stability of α, ω, β phases in Ti-Nb alloys</title><title>Materials research innovations</title><description>The effect of Nb content on the lattice parameters and relative stability of α, β and ω phases in Ti 1-x Nb x (0&lt;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.</description><subject>Alloys</subject><subject>Approximation</subject><subject>Concentration (composition)</subject><subject>EMTO-CPA</subject><subject>Lattice parameters</subject><subject>Niobium</subject><subject>Phases</subject><subject>Stability</subject><subject>Ti-Nb alloys</subject><subject>Titanium base alloys</subject><subject>ω phase</subject><issn>1432-8917</issn><issn>1433-075X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkMtKAzEYhQdRsFbfIUsXnZrLTDKzlOINioJUKG5CksnQSJqMyZQyj-Dj6IPUV3LaKnTnvzk_nPOdxUkSgOAYIVZeoYzgokQMZa9j-He0gEfJoLdIClk-P979ON3mTpOzGN8gRIyiYpDMn7UVrfEuLkwDpG7XWjvwKIHyTmnXhp0JhKtAbIU01rQd8DXYfI7A98cIbL5AsxBRR2AcmJm0J4W1vovnyUktbNQXvzpMXm5vZpP7dPp09zC5nqYKl6xNUVlSnOm8rgqmpFBZQaSCFFYVg1RgDCmhSuYCCiwFkTnJZAZRkauiUjlCmAyTy31vE_z7SseWL01U2lrhtF9FjiiGkJGMkj5a7KMq-BiDrnkTzFKEjiPIt2PygzH54Zg9OtmjxtU-LMXaB1vxVnTWhzoIp0zk5N-WHy50fSs</recordid><startdate>20140701</startdate><enddate>20140701</enddate><creator>Meng, C. 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source Taylor and Francis Science and Technology Collection
subjects Alloys
Approximation
Concentration (composition)
EMTO-CPA
Lattice parameters
Niobium
Phases
Stability
Ti-Nb alloys
Titanium base alloys
ω phase
title Relationship between Nb concentration and stability of α, ω, β phases in Ti-Nb alloys
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