Dr. Jacob Pope

Development Engineer at Sheffield Forgemasters

After studying a BEng in Aerospace Engineering at Swansea University for my undergraduate degree I decided to join the Advanced Metallic Systems Centre for Doctoral Training (CDT) at the University of Sheffield.

At my time at Swansea I undertook the materials stream where I researched nickel based superalloys for jet engine applications, which fuelled my passion to continue an education in materials engineering at Sheffield.

Current Research

Continuing with the aerospace theme I chose to research titanium, which is another material commonly found in jet engines, however my research has potential for other industries other than aerospace.

My research concentrates on the solid state diffusion bonding between dissimilar titanium alloys in particular Commercially Pure Titanium (CP-Ti), Ti-6Al-4V and Ti-5Al-5Mo-5V-3Cr.

The Spark Plasma Sintering (SPS) process which is different from conventional sintering methods as a current flows through the powder to achieve a Joule heating effect instead of using an external heat source, has been exploited. Dissimilar titanium powders are layered on top of each other and sintered at an arbitrary temperature and pressure producing diffusion zones between the alloys.

The aim of the research is to understand the diffusion bonds under different SPS parameters such as temperature and pressure, by using Energy Dispersive X-Ray Spectroscopy (EDS) analysis. Once this is understood shear, torsion, compressive and tensile forces will be applied to the bonds to see what effect this has on the microstructure and mechanical properties.

By undertaking this research it is envisaged that components in the automotive and aerospace industries will be manufactured from a number of dissimilar titanium alloys which will lengthen the life of components, as well as improving their performance in the future.