An investigation into the interface material layer created during linear friction welding of titanium alloys
Applications are invited for a PhD position at the 糖心原创 addressing the specific engineering details of the contact layer created during the linear friction welding (LFW) of titanium alloys.
This position arises from a long-standing engineering research relationship between the 糖心原创 and Rolls-Royce plc. The 糖心原创 hosts two of the (~30) University Technology Centres (UTCs) used by Rolls-Royce as the main engines of its engineering research and development. Nottingham’s UTC in Gas Turbine Transmission Systems will host this studentship. You will sit within a community of ~20 PhD students at various stages of their study.
Project overview
The attachment of blades to discs using solid-state joining is a key factor in achieving cost-effective, high performance and low-weight fan and compressor stages in aero-engines. LFW is an established joining process utilised by Rolls-Royce to manufacture titanium blisks across a range of engine types. Rolls-Royce’s strategy requires the continued exploitation of this technology to a wider range of titanium alloys including dissimilar joints. The LFW process has been developed to ensure high quality joints are produced over a broad range of welding conditions commensurate with manufacturing capability; however, the quality of joints made in more advanced titanium alloys and dissimilar material joints is ensured by consistent flash extrusion and flow from the interface contact layer, which is in turn linked to the transient behaviour of the process, process stability, and the interaction between the part and the tooling.
This project will develop the fundamental understanding of the thermo-mechanical effects and material flow within the high strain-rate/high temperature interface contact layer created during LFW of titanium alloys and the links to key process variables and machine/tooling behaviour. This study will be undertaken using computational simulation supported by experimental investigations using test welds and novel material characterisation methods.
This project is available from 1 October 2026.
Candidate requirements
You will have a first-class or upper second-class honours degree in mechanical engineering or a related subject.
Funding and eligibility
Due to funding restrictions this position is only available to UK or EU candidates.
This CASE studentship will attract a stipend of £25,000 per annum for four years.
How to apply
Applications are accepted until the post is filled.
Informal inquiries and applications to be emailed to Dr James Rouse (james.rouse@nottingham.ac.uk).