[School of Natural Sciences PhD Scholarships] Atomic-Scale Investigation of T1 Precipitate Nucleation and Growth in Third-Generation Aerospace Alloys Using In-Situ and advanced TEM

About the project

About the Project Third-generation Al-Cu-Li-Mg-Ag alloys are among the most advanced lightweight materials used in modern aerospace engineering. Their exceptional combination of low weight, high strength, improved stiffness, and excellent damage tolerance enables more fuel-efficient aircraft and supports the development of sustainable aerospace technologies. These outstanding properties are primarily derived from nanoscale T1 (Al₂CuLi) precipitates, which are the principal strengthening phase in these alloys. Despite decades of research, the mechanisms governing T1 nucleation and growth remain poorly understood. Recent atomic-resolution studies have revealed previously unknown intermediate phases and complex transformation pathways, suggesting that T1 formation is far more intricate than previously believed. Furthermore, the role of lithium and microalloying elements such as magnesium and silver during the earliest stages of precipitation remains unclear, limiting our ability to design improved aerospace alloys and heat-treatment strategies. This exciting PhD project will use state-of-the-art aberration-corrected transmission electron microscopy (TEM) and in situ heating TEM experiments to directly observe precipitation processes in real time at nanometre and atomic scales. Taking advantage of recent TEM advances that enable the direct imaging of lithium-containing atomic structures, the project will reveal how T1 precipitates nucleate, grow, and evolve during ageing. The project aims to: • Directly observe T1 nucleation and growth using in situ TEM. • Identify precursor structures, intermediate phases, and transformation pathways. • Determine the role of Li, Cu, Mg, and Ag during precipitation. • Quantify atomic-scale structural and crystallographic evolution. • Develop a mechanistic understanding of T1 precipitation and strengthening behaviour. The outcomes will provide fundamental insight into one of the most important strengthening mechanisms in aerospace aluminium alloys and help guide the development of future lightweight materials with enhanced mechanical performance and thermal stability. Why Join Us? You will join a world leading department working on one of the most important challenges in modern physical metallurgy. This project combines fundamental science with cutting-edge experimentation, providing a unique opportunity to make discoveries that could influence the design of future lightweight structural materials. You will have access to state-of-the-art electron microscopy facilities and receive advanced training in aberration-corrected TEM and in situ electron microscopy. Working at the interface of advanced electron microscopy, physical metallurgy, and alloy design, you will develop a rare and highly transferable skill set that is sought after across academia, aerospace, advanced manufacturing, and national research laboratories. Throughout the PhD, you will work closely with internationally recognised researchers and gain the experience required to become an independent scientist. The project will provide opportunities to present your work at major international conferences and publish in high-impact scientific journals. Besides, you will build a strong foundation for careers in academia, national laboratories, aerospace, and other high-technology sectors. By the end of the PhD, you will have developed expertise in atomic-scale materials characterisation and phase transformation phenomena, positioning you at the forefront of materials research. If you are excited by the prospect of uncovering how materials evolve atom-by-atom and contributing to the development of future aerospace alloys, we encourage you to apply. This project is expected to start in September 2027. Before you apply: We strongly recommend that you contact the supervisors for this project before you apply. How to apply: To be considered for this project you must complete a formal application through our online application portal. If you already have an applicant account this link will directly open an application for PhD School of Natural Sciences Scholarships . If you don’t already have an applicant account, please follow the instructions here . When applying, please specify the full title and supervisor/s of the project, details of your previous study, and names and contact details of two referees. You must also upload a Supporting Statement describing your motivation to apply to the project, your CV and transcripts of awarded and in-progress university qualifications . Please note late or incomplete applications will not be considered. Equality, diversity and inclusion are fundamental to the success of The University of Manchester and central to all our activities. A diverse research community strengthens creativity, productivity and quality, while increasing the societal and economic impact of our work. We welcome applicants from all career paths, backgrounds and sections of the community, regardless of age, disability, ethnicity, gender, gender expression, sexual orientation or transgender status. We welcome applications from candidates returning to study after a career break or experience in other roles. Flexible study arrangements may be available, including part-time study at 50%, 60% or 80%, subject to the requirements of the project and funder. Eligibility : The standard academic entry requirement for this PhD is an upper second-class (2:1) honours degree (or international equivalent) in a discipline directly relevant to the PhD OR any upper-second class (2:1) honours degree and a Master’s degree at merit (or international equivalent) in a discipline directly relevant to the PhD. This project will remain open until filled. If your application is submitted by 1 st November 2026, you can expect a decision by 18 th December 2026. If your application is submitted by 15 th January 2027, you can expect a decision by 30 th March 2027. Self or externally funded students can also be considered for this project. FSESoNS

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