PhD - Phase-Field Modelling of Martensitic Transformation in TRIP Refractory High-Entropy Alloys Université de Lorraine in France

This PhD position at Université de Lorraine, based at the Institut Jean Lamour in Nancy, France, offers an exciting opportunity to advance the understanding of martensitic transformation in transformation-induced plasticity (TRIP) refractory high-entropy alloys (RHEAs). RHEAs and complex concentrated alloys (RCCAs) are multi-principal element materials known for their exceptional strength and thermal stability, but their limited ductility at room temperature has restricted their practical applications. Recent research has shown that the TRIP effect can significantly enhance ductility and work-hardening, especially in alloys containing Group IV elements such as Ti, Zr, and Hf. The ability to control this effect is crucial for developing next-generation high-temperature structural materials.

This PhD project is part of the ANR-funded BADTRIP initiative, which aims to unravel the micro-mechanical and microstructural mechanisms governing martensitic transformation in TRIP-type RHEAs. The main scientific objective is to develop and validate a three-dimensional phase-field model that describes the early stages of martensitic transformation, the growth and interaction of martensitic variants within a metastable β matrix, and the coupling between transformation-induced strains and plastic relaxation. The outcomes will contribute to establishing physically based criteria for predicting TRIP behavior in these advanced alloys.

As a doctoral researcher, you will familiarize yourself with existing multi-phase-field models for martensitic transformations, extend these models to incorporate plastic relaxation, calibrate input parameters using literature data, and perform numerical simulations to study the effects of mechanical loading on microstructural evolution. You will analyze 3D simulation outputs and compare them with available experimental data, contributing to both theoretical and practical advancements in the field.

Applicants should have a strong background in metallurgy, materials science, solid mechanics, or computational physics, and demonstrate a keen interest in numerical methods and scientific programming (Python, Fortran). Prior knowledge of phase-field modelling is appreciated, and proficiency in English and/or French is required. The position is based in Nancy, France, at the Institut Jean Lamour, a leading research center in materials science.

To apply, send your application and CV to [email protected] or use the academicpositions.com portal. The application deadline is April 1, 2026. For further information, visit the Institut Jean Lamour website. This is a unique opportunity to join a cutting-edge research project and contribute to the development of advanced structural materials.