Titanium alloys are used in a wide variety of components throughout the fan and compressor stages of an aero-engine. Although engine design has evolved significantly in recent years to reduce life-cycle cost, reduce weight and improve efficiency, engine makers have continued to use the same, well-known alloys for which there are decades of experience and well established manufacturing routes. However, the limitations of these alloys are now hindering new designs, stimulating the development of new alloys with different microstructures and different property balances. The aim of the PhD project is to understand the effects of the microstructure on the ductility of these new alloys and how they compare with the more standard alloys and microstructures currently used.
The project will combine advanced ductility testing, using in-situ deformation mapping at the macro and microscale with advanced characterisation techniques, including high resolution scanning electron microscopy, synchrotron X-ray diffraction and 3D tomography. Computational models of microstructural deformation will also be applied to understand and interpret the experimental results.