Fixed-term researcher (M/F) in atomistic simulations of TRIP effect in high entropy alloys

CNRS; France; Sur place; EUR 30 000 - 45 000; Plein temps

Résumé du poste

A leading research organization in France is seeking a First Stage Researcher to study refractory high entropy alloys. Candidates should possess a PhD in solid state physics, materials science, or mechanics of materials, along with skills in programming and atomistic simulations. The successful applicant will work collaboratively in two laboratories and is expected to publish their findings and present at conferences. This is a full-time, temporary position starting on April 1, 2026.

Qualifications

• The candidate must have a PhD degree at the beginning of the contract.
• Strong interest in modeling and numerical simulation is required.
• Experience with high-performance computing resources is necessary.

Responsabilités

• Characterize the stability and elastic properties of RHEAs.
• Present scientific findings at national/international conferences.
• Write scientific articles related to findings.

Connaissances

Programming

Atomistic simulations

English fluency

Formation

PhD degree in solid state physics, materials science, or mechanics of materials

Outils

LAMMPS

Quantum Espresso

Description du poste

Organisation/Company CNRS Department Centre Interdisciplinaire de Nanoscience de Marseille Research Field Physics » Condensed matter properties Physics » Solid state physics Physics » Surface physics Researcher Profile First Stage Researcher (R1) Country France Application Deadline 10 Dec 2025 - 23:59 (UTC) Type of Contract Temporary Job Status Full-time Hours Per Week 35 Offer Starting Date 1 Apr 2026 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure? No

Offer Description

Refractory high entropy alloys (RHEAs) are single-phase solid solutions consisting of elements from groups IV, V, and VI, all present in high concentrations. They combine a very high elastic limit up to 1400°C and high thermal stability, making them promising for high-temperature applications. However, their ductility at room temperature is insufficient, and its physical origin remains poorly understood. Activating the “TRIP” effect (transformation-induced plasticity) is an interesting way to increase it, but the link between activated mechanisms and alloy composition has not been established. In this work, we propose to characterize in detail the stability and elastic properties of the involved phases involved at the atomic scale and at finite temperatures, for a series of model RHEAs. This will enable us to study the relevant elementary mechanisms associated with the TRIP effect and to feed into/build mesoscale models of the mechanical properties of RHEAs. To this end, a database of ab initio calculations will be created, and a highly accurate machine-learning potential will be developed.

The successful candidate will use high-performance computing (HPC) resources and carry out numerical, methodological, and theoretical developments. He/She will be required to present his/her scientific findings at national/international conferences, and to write the related scientific articles.

The work will be carried out between two laboratories, CINaM (Aix-Marseille University, 4 months) and MatéIS (INSA Lyon, 20 months). Supervision will be provided by C. Attaccalite and T. Swinburne (CINaM) and by C. Varvenne and P. Grigorev (MatéIS).

The candidate will have a PhD degree at the beginning of the contract, with a background in solid state physics, materials science or mechanics of materials. A strong interest in modeling and numerical simulation is required. Skills in programming, atomistic simulations (LAMMPS, Quantum Espresso, etc.), and fluency in English are required.