Team
MSR - Métallurgie, Structure, Rhéologie
Biography
Madeleine Bignon is a researcher specializing in the study of microstructures and transformation mechanisms in metallic materials, particularly nickel-based superalloys and aluminum alloys. Her work focuses on analyzing precipitation kinetics, microstructural changes during thermomechanical treatments, and the interactions between plastic deformation and precipitation. In particular, she explores the influence of thermal paths, strain rates, and recrystallization parameters on the distribution, morphology, and stability of precipitates, as well as on grain growth. Her research incorporates advanced experimental techniques (SEM, EBSD, SAXS, TEM) and analytical or numerical modeling, such as the Kampmann–Wagner (KWN) model, to predict microstructural behavior under industrial conditions. His recent contributions also include the study of the dynamic effects of deformation on precipitation and the stabilization of microstructures by second-phase particles.
Publication(s)
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2026
Influence of Heat Treatment Conditions on the Evolution of the Precipitate Population in VDM Alloy 780 DOI : 10.1007/s11661-026-08121-2
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2026
Grain Structure Behavior of Powder Metallurgy Nickel Base γ–γ′ Superalloys Under γ′-Supersolvus Solution Heat-Treatment DOI : 10.1007/s11661-025-08107-6
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2025
Dynamic precipitation in Al–Zn–Mg–Cu Alloys: A comparative analysis of uniaxial tension and cross-die forming DOI : 10.1016/j.jallcom.2025.180840
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2024
Particle pinning during grain growth—A new analytical model for predicting the mean limiting grain size but also grain size heterogeneity in a 2D polycrystalline context DOI : 10.1016/j.actamat.2024.120174
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2024
Effect of Strain Rate on Dynamic Recrystallization of a Typical γ-γ′ Nickel-Based Superalloy with Initial Bimodal Precipitation DOI : 10.1007/978-3-031-63937-1_68
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2024
Characterization and modelling of grain growth in Zr-Nb alloys: Niobium concentration influence DOI : 10.21741/9781644903131-79
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2023
Interactions between plastic deformation and precipitation in Aluminium alloys: A crystal plasticity model DOI : 10.1016/j.actamat.2023.118735
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2023
In-situ investigation of dynamic precipitation in pre-aged Al-Zn-Mg-Cu alloy AA7075 DOI : 10.1016/j.jallcom.2023.172098
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2022
Modelling dynamic precipitation in pre-aged aluminium alloys under warm forming conditions DOI : 10.1016/j.actamat.2022.118036
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2021
Martensite formation in titanium alloys: Crystallographic and compositional effects DOI : 10.1016/j.jallcom.2021.159636
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2019
Modelling martensitic transformation in titanium alloys: The influence of temperature and deformation DOI : 10.1016/j.mtla.2019.100382
Teaching
Materials for Engineers
The in-person component (27 hours) is structured into plenary sessions in a lecture hall (12 hours), small-group sessions (12 hours) with fewer students, and presentations of lab reports to a panel (30 minutes). It also includes a written exam (2 hours and 30 minutes). Students’ independent study (18 hours) includes (in addition to the engine disassembly and reassembly activity mentioned above): A self-assessment multiple-choice quiz (30 min) on prerequisites. This self-assessment is conducted prior to the first class to identify students’ strengths and weaknesses and then focus on certain aspects during face-to-face instruction. An assignment on phase diagrams (2 hours) An assignment on material aging (2 hours) Laboratory work at the CMAT (6 hours): 13 lab sessions are conducted in groups of 4 to 5 students, supervised by the Center’s engineers and technicians as well as doctoral students, since most lab topics are related to current thesis projects. A 20-minute oral presentation for each lab is given at the end of the day in two parallel sessions. Students therefore complete one of the lab sessions and participate in or attend half of the presentations at the end of the day. Two similar days are organized to accommodate the entire class. Final exam review (5 hours)
PhD supervision
- 2025 Full-field modeling of solid-state phase transformation in titanium alloys LIU Bowen
- 2023 Evolution of the microstructure during forging of VDM® 780 alloy: mean-field modeling of subsolvus recrystallization and effect of chemical composition on kinetics. PASCUAL GOCE Fernando
- 2022 Metallurgical evolutions of Zr-Nb alloys during hot deformation processes: understanding mechanisms and simulations. HAHN Pauline
- 2021 The evolution of the microstructure of the nickel-based superalloy γ-γ' René 65 during its forming process for turbine disk manufacturing ORLACCHIO Federico