%0 journal article %@ 1600-5767 %A Heldmann, A., Hoelzel, M., Hofmann, M., Gan, W., Schmahl, W.W., Griesshaber, E., Hansen, T., Schell, N., Petrya, W. %D 2019 %J Journal of Applied Crystallography %N 5 %P 1144-1156 %R doi:10.1107/S1600576719010720 %T Diffraction-based determination of single-crystal elastic constants of polycrystalline titanium alloys %U https://doi.org/10.1107/S1600576719010720 5 %X Single-crystal elastic constants have been derived by lattice strain measurements using neutron diffraction on polycrystalline Ti-6Al-4V, Ti-6Al-2Sn-4Zr-6Mo and Ti-3Al-8V-6Cr-4Zr-4Mo alloy samples. A variety of model approximations for the grain-to-grain interactions, namely approaches by Voigt, Reuss, Hill, Kroener, de Wit and Matthies, including texture weightings, have been applied and compared. A load-transfer approach for multiphase alloys was also implemented and the results are compared with single-phase data. For the materials under investigation, the results for multiphase alloys agree well with the results for single-phase materials in the corresponding phases. In this respect, all eight elastic constants in the dual-phase Ti-6Al-2Sn-4Zr-6Mo alloy have been derived for the first time.