Influence of Sn on martensitic beta Ti alloys

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Author(s)

  • S. Cai
  • L. Wang
  • J. E. Schaffer
  • J. Gao
  • Y. Ren

Detail(s)

Original languageEnglish
Pages (from-to)764-772
Journal / PublicationMaterials Science and Engineering A
Volume743
Publication statusPublished - 16 Jan 2019
Externally publishedYes

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85057580580&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(3325eda1-e842-4051-b927-60d8c56226f1).html

Abstract

The influence of Sn composition in Ti-17 at% Nb alloys is studied by cyclic tension and in-situ synchrotron X-ray diffraction. It is firstly found that Sn stabilizes β-phase and effectively suppresses the formation of ω-phase. Along with β-phase stability, we observe lowering of the austenite and martensite transformation temperature by ~100 K/at% and 88 K/at%, respectively. Increasing Sn decreases the martensitic transformation strain in Ti-Nb alloys by ~1.4%/at%, larger than that in Ti-Zr-Nb-Sn systems. The influence of Sn in martensitic Ti is anisotropic: causing larger reduction in lattice parameter b and higher decreases in elastic moduli of grain families that are aligned close to the b-axis. Finally, a {013}α ″, {031}α″,{122}α″ and {211}α″ quadruple texture was observed in martensitic Ti wire. At the early stage of deformation, detwinning quickly rotated {013}α″ and {211}α″ towards {031}α″ and {122}α″ components. After that, the strength of {031}α″ continued to increase, while the strength of {122}α″ texture was gradually decreased by dislocation slip as deformation continued.

Research Area(s)

  • Detwinning, Martensitic Ti, Phase transformation, Synchrotron, Texture

Bibliographic Note

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Publication fingerprints text

100
alloys INIS
100
martensitic steels INIS
100
Martensitic Keyphrases
100
Thalassemia Interme... Keyphrases
100
Alloy Material Science
100
Niobium Alloys Material Science
66
deformation INIS
66
texture INIS
66
niobium alloys INIS
50
Wire Material Science
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Citation Format(s)

[ RIS ] [ BibTeX ]
Influence of Sn on martensitic beta Ti alloys. / Cai, S.; Wang, L.; Schaffer, J. E. et al.
In: Materials Science and Engineering A, Vol. 743, 16.01.2019, p. 764-772.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review