The alpha/beta interface in Ti-6Al-2Sn-4Zr-6Mo (Ti-6246) is investigated via
centre of symmetry analysis, both as-grown and after 10% cold work.
Semi-coherent interface steps are observed at a spacing of 4.5 +/-1.13 atoms in
the as-grown condition, in good agreement with theory prediction (4.37 atoms).
Lattice accommodation is observed, with elongation along [-1 2 -1 0]alpha and
contraction along [1 0 -1 0]alpha . Deformed alpha exhibited larger, less
coherent steps with slip bands lying in {110}beta. This indicates dislocation
pile-up at the grain boundary, a precursor to globularisation, offering insight
into the effect of deformation processing on the interface, which is important
for titanium alloy processing route design.