Crystallographic variant selection in Ti-6Al-4V

Journal Article · Mon Oct 04 04:00:00 EDT 2004 · Acta Materialia

DOI:https://doi.org/10.1016/j.actamat.2004.07.034· OSTI ID:20634787

Stanford, N ^[1]; Bate, P S ^[1]

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1. Manchester Materials Science Centre, University of Manchester, Grosvenor Street, Manchester M1 7HS (United Kingdom)

Transformation textures in the two-phase alloy Ti-6Al-4V have been studied. Samples were heated into the fully {beta} phase condition and then slow cooled to allow diffusional transformation to {alpha}. This produced a microstructure of grain boundary {alpha} encircling colonies of Widmanstaetten {alpha}. Electron backscattered diffraction (EBSD) texture measurements showed that the {alpha} texture was markedly sharper than that calculated on a basis of equal variant probability, indicating that significant variant selection was occurring during diffusional transformation. Investigation of the {alpha} variants produced across prior {beta} grain boundaries has shown that the selection of variants during transformation is highly dependant on the crystallography of those boundaries. The effect of this crystallographic variant selection on the transformation texture has been modelled.

• OSTI ID: 20634787
• Journal Information: Acta Materialia, Journal Name: Acta Materialia Journal Issue: 17 Vol. 52; ISSN 1359-6454; ISSN ACMAFD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
BACKSCATTERING
CRYSTALLOGRAPHY
ELECTRON DIFFRACTION
GRAIN BOUNDARIES
PHASE TRANSFORMATIONS
TEXTURE
TITANIUM ALLOYS
VANADIUM ALLOYS