Metallurgy, Mechanics, Structures & Solidification – 2MS

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    Research fields

    - Physical metallurgy
    - Mechanical behaviours
    - Experimental characterizations
    - Solidification and phase transformations
    - Microstructures

    Applications

    - Continuous and ingot casting
    - Shape casting
    - Welding
    - Additive manufacturing
    - Heat treatments

    Alloys

    - Steels
    - Nickel base alloys
    - Titanium alloys
    - Aluminum alloys
    - Oxide ceramics

    Main objectives of the team

    From solidification processes are issued the first materials microstructures, inherited by the subsequent forming processes. It is of paramount importance to follow the thermomechanical history along the entire material forming route to understand, master and optimize the features of solidification microstructures, including the nature, the morphologies and the dimensions of thermodynamic phases. Similarly, the microstructure plays a key role on the thermomechanical history during solidification processing. The formation of numerous casting defects involves coupling between thermomechanics and microstructures. The studies of the team are combined at several scales and include the consequences of solidification microstructures on solid state phase transformations and properties of components.

    Example of projects

    • European Space Agency (projects CCEMLCC, CETSOL, NEQUISOL) : Microgravity studies of alloy solidification to reach benchmark data for comparison with numerical models, 1999-
    • Agence Nationale de La Recherche (projects CrySaLID, NEMESIS, MACCADAM) : Mesoscopic modeling of solidification grain structures for various materials (silicon, metallic alloys) and processes (directional solidification, welding, additive manufacturing), 2014-2022
    • Fonds Unique Interministériel (Project SOFT-DEFIS) : Macroscopic modeling of grain structures for ingot casting, 2016-2020
    • Association Nationale de la Recherche et de la Technologie (SAFRAN, SAINT GOBAIN, CETIM, DIOR) : industry related projects
    • Doctoral grant : fundamental studies, 2018-2021

    Highlights

    PhysalurgY: a library for computation of phase transformations coupled with the Thermo-Calc software.

    Best poster award at conference ICASP-5 - CSSCR-5

    "My thesis deals with the modeling of the coupling between the fluid and solid mechanics in industrial casting processes. It is a strategic issue for industries to understand and master defects such as cracks and macrosegregations. "

    Shaojie ZHANG, PhD CEMEF

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    Academic collaborations

    • Deutsches Zentrum für Luft- und Raumfahrt,Cologne, Allemagne
    • Northeastern University, Boston, USA
    • Northeastern University, Shenyang, PRC
    • Shanghai JiaoTong University, Shanghai, PRC
    • University of Alberta, Edmonton, Canada

    Industry collaborations

    • APERAM
    • ARCELORMITTAL
    • ASCOMETAL
    • AUBERT&DUVAL
    • CETIM
    • DIOR
    • INDUSTEEL
    • SAFRAN
    • SAINT GOBAIN
    • TRANSVALOR