The aim of this experiment is to study the structural effect of solid solution strengthening elements on the state of ordering in Titanium (Ti) alloys. A systematic study using classical metallurgy, EBSD and EnginX on binary Ti Aluminium (Al) showed by trend increasing twin activity with little Al additions, but significantly decreasing activity at concentrations above 6wt%. To date it is believed that at high Al concentrations Ti3Al precipitates supress twinning, but only indirect evidence on aged material proofs that assumption. As XRD and TEM diffraction don't seem sensitive enough to show the superlattice structure in solution treated material, HRPD using neutron diffraction is a highly promising technique to proof the existence of ordered structures.
