Yi's research focuses on the deformation mechanism and mechanical behavior of engineering materials for aerospace, automotive, marine and biomedical applications. Her research aims to understand the correlation between the microstructures and mechanical properties of materials to develop high performance materials for engineering applications and to optimize process parameters for high-value manufacturing. She has undertaken many research projects, which were sponsored by the US Army Research Office, US Department of Energy, EPSRC, Royal Society, British Academy and ERC. Research outcomes are visible from research papers published in high impact international journals with a total of 6300 citations and hi-index 45 (Google Scholar).
Yi is a Fellow of Institute of Materials, Minerals and Mining (IMMM) and a member of UKRI Talent Peer Review College and EPSRC Peer Review College. She was invited to review research proposal and grant applications for the German Research Foundation, the Czech Science Foundation, EPSRC and the Royal Society