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 PaperResearch

1 Citation (Scopus)

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
Subtitle of host publicationWhistler, Canada; 28 June 2015 through 3 July 2015
EditorsMatthias Militzer, Gianluigi Botton, Lon-Qing Chen, James Howe, Chadwick Sinclair, Hatem Zurob
Place of PublicationWhistler BC Canada
PublisherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
Pages663-670
Number of pages8
ISBN (Electronic)9780692437360
Publication statusPublished - 2015
Externally publishedYes
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015 - Westin Whistler Resort & Spa, Whistler, Canada
Duration: 28 Jun 20153 Jul 2015
https://www.eiseverywhere.com//ehome/ptm2015/

Conference

ConferenceInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015
Abbreviated titlePTM 2015
CountryCanada
CityWhistler
Period28/06/153/07/15
Internet address

Keywords

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

Cite this

Zheng, Y., Williams, R. E. A., Shi, R., Gao, Y., Wang, D., Nag, S., ... Fraser, H. L. (2015). Integrated experimental and computational studies of non-conventional transformation pathways in titanium alloys. In M. Militzer, G. Botton, L-Q. Chen, J. Howe, C. Sinclair, & H. Zurob (Eds.), PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015: Whistler, Canada; 28 June 2015 through 3 July 2015 (pp. 663-670). Whistler BC Canada: International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015.