Dr Helen Davies

Dr Helen Davies

Associate Professor, Materials Science and Engineering

Telephone number

+44 (0) 1792 602511

Email address

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Research Links

About

The “High Integrity Joining Team” was formed in 2015 within the Institute of Structural Materials at Swansea University and is led by Dr Helen Davies with support from a Senior Post-Doctoral Research Officer and four PhD students.

Most recently, the team, have progressed the technique and application of powder interlayer bonding (PIB), a joining technique developed at the ISM. Alloys studied include Ti-64, Ti 6246, titanium aluminides and various nickel super alloys.

PIB is a novel joining technique providing high integrity joints at relatively low cost, providing opportunities to salvage and repair otherwise redundant components.  The PIB technique utilises a metallic powder interlayer between the two faying surfaces, eliminating surface asperities and reducing the dependency of the bonding process on smooth surface finish. The process utilises inert gas shielding to protect the fusion zone from oxidation during bonding. Heating in the example offered in this work is provided by induction, which is an efficient method of heating metals such as titanium.

Areas Of Expertise

  • Titanium alloys
  • Nickel superalloys
  • Nickel Manufacture
  • Grain Boundary Engineering
  • Semi-solid forming
  • Additive Layer Manufacturing
  • Metals Casting
  • Failure Analysis (Metals)

Career Highlights

Teaching Interests

Metal Manufacturing, Casting, Semi-solid metal forming

Research

Research is predominantly funded by Rolls Royce plc and projects include a recently completed 3-year PV funded research project REMASTER project (Repair Methods for Aerospace Structures using novel processes, https://gtr.ukri.org/projects?ref=102380) and two PV funded PhD studentships. Findings from this research have been presented at various conferences and as journal publications. International collaborations also exist with UCLA (USA), Institute of Materials Science, Joining and Forming (IMAT), Graz University of Technology (Austria) and G.V. Kurdyumov Institute for Metal Physics (IMP), NAS of Ukraine.

Research is also being carried out as part of the CAJoRR project. https://gtr.ukri.org/projects?ref=113156.

Collaborations

Collaborative research with TIMET UK into microstructural and mechanical characterisation of a novel titanium alloys is underway.