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Materials, Structure and Manufacturing at Harwell Activity

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Miss IMOGEN COWLEY

Miss IMOGEN COWLEY

Student

Dept of Mechanical Engineering

Faculty of Engineering Science

Joined UCL
28th Sep 2020

Research summary

In situ synchrotron imaging for process mapping of directed energy deposition of nickel-based superalloys

Directed Energy Deposition (DED) is an Additive Manufacturing (AM) technology which offers new repair capabilities for high-value superalloy aerospace components. However, DED-produced components are susceptible to heterogeneity and defects (such as cracking, porosity, lack-of-fusion, and poor surface finish). Current research relies upon post-build ex situ analysis of samples to relate process parameters to resulting microstructural features and material properties, and there is a lack of understanding of the dynamic physical mechanisms that underpin these relationships. This project uses in situ synchrotron radiography to study Blown-Powder DED of nickel superalloys to map process-microstructure-property relationships and reveal underlying physical phenomena.

This project is in collaboration with Rolls-Royce plc. and supported by the MAPP EPSRC Future Manufacturing Hub.

Biography

Imogen graduated from the University of Oxford in 2018 with an MEng in Engineering Science, and from UCL in 2020 with an MSc in Advanced Materials Science, before starting a PhD with Peter Lee's group in Harwell.


In 2018, Imogen was the Healthcare category and Overall winner of The Telegraph STEM Awards.

Publications