The effect of aluminium on deformation and twinning in alpha titanium: The 45° case

Arnas Fitzner, D. G Leo Prakash, Joao Quinta da Fonseca, Michael Preuss, Matthew Thomas, Shu Yan Zhang, Joe Kelleher

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The deformation behaviour of binary Ti-Al model alloys has been observed in respect to nucleation, propagation and growth of twins, specifically the interaction of slip and {1 0 1̄ 2} tensile twins. The area fraction of twins increases by trend from Ti-0Al to Ti-4Al but significantly reduces to Ti-6Al. The lattice strain evolution during compression was measured using in-situ neutron diffraction and decreases from Ti-0Al to Ti-4Al but increases to Ti-6Al. The twin activity in hcp Ti behaves as expected from fcc materials until 4 wt.% Al concentration, but it is believed that short or long range ordering reduces the twin activity in Ti-6Al. © (2013) Trans Tech Publications, Switzerland.
    Original languageEnglish
    Pages (from-to)549-553
    Number of pages4
    JournalMaterials Science Forum
    Volume765
    DOIs
    Publication statusPublished - 2013

    Keywords

    • Deformation twinning
    • Neutron diffraction
    • Ti-Al binary alloys

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