Description

Hydrogen is a key element to a zero-carbon emission future, yet its ingress critically influences the physical properties of most materials. This PhD thesis proposal aims to perform a detailed experimental and theoretical study to quantify the hydrogen contribution to precipitation kinetics and mechanical properties in high-strength Al-based alloys. This quantification will be achieved by the candidate through atom-scale experiments (scanning transmission electron microscopy and atom probe tomography) correlated with differential scanning calorimetry and micro-indentation measurements. Finally, the last part of the project will aim to optimise the microstructure using hydrogen. Such an approach will also be supported by in-situ micro mechanical tests in a scanning electron microscope and by atom-scale characterisation.

Compétences requises

The candidate must be a student in the second year of a Master’s degree or in the final year of an engineering school specialising in materials science, metallurgical physics or physical chemistry. They must have a strong foundation in phase transformation, particularly the precipitation mechanism in metallic alloys. Prior training in aluminium alloys, hydrogen-metal interactions or the mechanical behaviour of materials would be a significant advantage. We expected the candidate to demonstrate strong scientific curiosity, experimental rigour, and the ability to analyse complex phenomena by correlating microstructural evolution with mechanical behaviour. They should be methodical, organised and autonomous, while also being comfortable in a collaborative research environment. Experience with data analysis tools, such as Python or MATLAB is a plus and a B2-level in English (B2 level) is required for this position.

Mots clés

Hydrogen, Precipitation, Aluminium alloys, Atom probe tomography, Scanning Transmission Electron Microscopy