Integrated experimental and computational studies of non-conventional transformation pathways in titanium alloys

Y. Zheng, R. E.A. Williams, R. Shi, Y. Gao, D. Wang, S. Nag, Y. Wang, R. Banerjee, H. L. Fraser

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The pathways for super-refined intragranular precipitation of α phase in Ti-5Al-5Mo-5V-3Cr (Ti5553) were studied using aberration-corrected electron microscopy and 3D atom probe tomography. Experimental results indicate clearly that the ω phase can influence this superrefined a precipitation. Phase field modeling based on structural and compositional information obtained from experiment shows that the presence of ω phase can modify the stress and compositional field in β matrix and therefore provide an extra driving force for α nucleation, as well as a nucleation site for α precipitation. An understanding of non-transformation pathway controlling super-refined α microstructure in Ti5553 has been developed and is described.

Original languageEnglish
Title of host publicationPTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
EditorsLong-Qing Chen, Matthias Militzer, Gianluigi Botton, James Howe, Chadwick Sinclair, Hatem Zurob
PublisherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
Pages663-670
Number of pages8
ISBN (Electronic)9780692437360
StatePublished - 2015
Externally publishedYes
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 - Whistler, Canada
Duration: Jun 28 2015Jul 3 2015

Publication series

NamePTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015

Conference

ConferenceInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015
Country/TerritoryCanada
CityWhistler
Period06/28/1507/3/15

Keywords

  • Phase transformation
  • Super-refined microstructure
  • ω Assisted precipitation

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