skip to primary navigationskip to content

Rolls-Royce UTC

Department of Materials Science and Metallurgy

Studying at Cambridge

 

James Moffat

PhD Student


Office Phone: +44 (0)1223 331950

Biography:

2012-2016: MChem Chemistry with Nanotechnology, University of Liverpool

2016-Present: PhD Materials Science and Metallurgy, University of Cambridge

Research Interests

Although less researched than their nickel-base counterparts, cobalt-base superalloys are a superb material for applications where high-temperature strength and corrosion resistance are essential. Inevitably, exposure to such environments leads to the alloy becoming contaminated with a variety of elements. Some of these contaminants can impair the mechanical properties of the alloy, shortening the lifetime of the alloy. As little as 100 ppm could be enough to compromise the alloy mechanically. Furthermore, once the trace and tramp element contaminants are within the microstructure of the alloy, they are persistent and difficult to remove. This provides an additional challenge when it comes to recycling and reusing serviced material.

My project sets out to investigate the impact trace and tramp elements have on the mechanical properties of cobalt-base superalloys. The mechanisms behind the accumulation and segregation of the trace and tramp elements, as well as the critical levels required to compromise the mechanical integrity of cobalt-base superalloys, will be explored.

Keywords

  • SIMS
  • Heat Treatments
  • Corrosion
  • Trace and Tramp Elements
  • High-temperature
  • Microstructure
  • Characterisation
  • XRD
  • TEM
  • Contamination
  • Thermo-Calc
  • EPMA
  • Cobalt-base Superalloys
  • Mechanical Testing
  • DSC
  • Alloy Development

Collaborators

RSS Feed Latest news

Strategic Partnership with Rolls-Royce shortlisted for a Times Higher Education Award 2017

Oct 03, 2017

The Rolls-Royce partnership with the universities of Cambridge, Swansea and Birmingham has been shortlisted for a Times Higher Education Award 2017. Find out more here: https://www.timeshighereducation.com/news/times-higher-education-awards-2017-shortlist-announced

New high temperature thermocouple

Nov 14, 2016

Dr. Michele Scervini has developed a new thermocouple for high-temperature applications

MS&T Literature Review Prize

Jun 15, 2016

Alison Wilson voted runner up in this year's competition