A5080365015- Additive Manufacturing Materials and Processes
- Welding Techniques and Residual Stresses
- Metallurgy and Material Forming
- Microstructure and Mechanical Properties of Steels
- High Entropy Alloys Studies
- Metallurgical Processes and Thermodynamics
- Metal Alloys Wear and Properties
- Fusion materials and technologies
- Powder Metallurgy Techniques and Materials
- Manufacturing Process and Optimization
- Advanced materials and composites
- Magnetic confinement fusion research
- Advanced Materials Characterization Techniques
- Additive Manufacturing and 3D Printing Technologies
- High Temperature Alloys and Creep
Laboratoire de Mécanique des Sols, Structures et Matériaux
2023-2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2020-2023
CEA Paris-Saclay
2020-2023
Électricité de France (France)
2022-2023
Université Paris-Saclay
2021-2023
EDF Energy (United Kingdom)
2022
Centre de Mise en Forme des Matériaux
2017-2020
École Nationale Supérieure des Mines de Paris
2018
The use of different steel powders allows to obtain either multi-material junctions, when they are stacked, or new duplex alloys blended.This study focuses on materials obtained by Spark Plasma Sintering (SPS) Hot Isostatic Pressing (HIP) with an austenitic 316L and a martensitic Fe-9Cr powders. These characterized at scales: from metallography electron microscopy EDX EBSD, hardness tensile tests.The mechanical behaviour cannot be described simple law mixtures. To better understand this...
In this paper, the high temperature transformation kinetics of delta ferrite to austenite (δ → γ) phase is modeled by thermodynamic and diffusion calculations. It appears that, in martensitic steels, δ γ very fast (a few nanoseconds) as soon first nuclei appears. Classically austenitic will thus systematically be observed material during conventional elaboration processes. However, powder metallurgy additive manufacturing, it possible obtain sufficiently quenching rates (up 106 °C/s) so that...