Alexandre LEGRIS

Alexandre LEGRIS is a Professor at the University of Lille within Polytech'Lille, conducting research in the Materials and Transformations Unit (UMR 8207 CNRS). He is a core member of the Physical Metallurgy and Materials Engineering research team, focusing on computational modeling of phase transformations in metallic alloys subjected to irradiation. His work has significant applications in nuclear materials science, particularly for nuclear reactor components and fuel cladding systems.

LEGRIS specializes in crystallography, corrosion mechanisms, and phase transformations in metallic systems. His research employs advanced computational techniques including phase-field modeling, atomic-scale simulations, and multiscale approaches to understand radiation damage mechanisms in structural materials. His expertise spans zirconium alloys for nuclear applications, advanced steels, and oxide dispersion strengthened materials.

His publication record demonstrates consistent contributions to understanding irradiation effects in nuclear materials, with recent work focusing on zirconium growth mechanisms, radiation-induced segregation, and dislocation behavior under irradiation. The research spans fundamental atomic-scale phenomena to engineering-scale applications in nuclear systems.

• Modeling radiation damage in zirconium alloys for nuclear fuel cladding
• Phase transformations in advanced steels under irradiation
• Computational prediction of microstructure evolution in nuclear materials
• Development of models for radiation-induced segregation and defect clustering

LEGRIS has supervised numerous doctoral students whose research has advanced understanding of irradiation effects in nuclear materials. His students have investigated topics including ODS steels for fourth-generation reactors, thermomechanical treatments of austenitic steels, and additive manufacturing of radiation-resistant materials. Many of his former students have secured positions in industry and research institutions specializing in nuclear materials.

He collaborates extensively with researchers at the national and international level, particularly on nuclear materials projects involving CNRS, CEA, and international nuclear research organizations. His work contributes to the development of advanced materials for next-generation nuclear energy systems.