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 J. Thomas; Shu Yan Zhang; Joe Kelleher

doi:10.4028/www.scientific.net/MSF.765.549

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HomeMaterials Science ForumMaterials Science Forum Vol. 765The Effect of Aluminium on Deformation and...

The Effect of Aluminium on Deformation and Twinning in Alpha Titanium: The 45° Case

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 -1 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.

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Materials Science Forum (Volume 765)

Pages:

549-553

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.765.549

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Online since:

July 2013

Authors:

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

Keywords:

Deformation Twinning, Neutron Diffraction, Ti-Al Binary Alloys

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