Application of inverse models and XRD analysis to the determination of Ti-17 β-phase coefficients of thermal expansion

The scope of this work is the determination of the coefficients of thermal expansion of the Ti-17 β-phase. A rigorous inverse thermo-elastic self-consistent scale transition micro-mechanical model extended to multi-phase materials was used. The experimental data required for the application of the inverse method were obtained from both the available literature and especially dedicated X-ray diffraction lattice strain measurements performed on the studied (α + β) two-phase titanium alloy.