Cahn-rosenberg distortion and the orthorhombicity of titanium martensites

Jia Yi Yan, Gregory B Olson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The orthorhombicity of martensitic structure in Ti alloys can be explained by an anisotropy of pair correlations due to short-range ordering (SRO), as proposed by Cahn and Rosenberg. We use firstprinciples supercell calculations and configurational entropy to obtain equilibrium short-range ordering degrees at temperature in eight binary Ti systems. The composition dependence of martensitic orthorhombicity shows a system-dependent sensitivity to the SRO anisotropy. Such SRO sensitivities falls into strong and weak groups, which correlate with the atomic radii of the alloying elements.

Original languageEnglish (US)
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
Pages477-484
Number of pages8
ISBN (Electronic)9780692437360
StatePublished - Jan 1 2015
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

Other

OtherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015
CountryCanada
CityWhistler
Period6/28/157/3/15

Keywords

  • First-principles calculation
  • Martensitic phase transformation
  • Short-range ordering
  • Titanium alloys

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Inorganic Chemistry
  • Materials Chemistry
  • Metals and Alloys

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  • Cite this

    Yan, J. Y., & Olson, G. B. (2015). Cahn-rosenberg distortion and the orthorhombicity of titanium martensites. In L-Q. Chen, M. Militzer, G. Botton, J. Howe, C. Sinclair, & H. Zurob (Eds.), PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015 (pp. 477-484). (PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015). International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015.