|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Materials and Fuels for the Current and Advanced Nuclear Reactors V
||Fracture Criteria for Liquid Sodium Embrittlement in T91 Martensitic Steel
||Samuel Hemery, Clotilde Berdin, Thierry Auger
|On-Site Speaker (Planned)
The use of liquid metal coolant such as liquid sodium for fast breeder reactors implies several specific degradation processes for structural materials such as corrosion phenomena but also liquid metal embrittlement (LME). LME is an environmental degradation process leading to the reduction of ductility of a solid metal in contact with a liquid metal. The identification of a fracture criteria is a key point for modelling LME in liquid sodium. Numerical modelling using the finite elements method was carried out based on experimental data obtained on the T91/Na couple to estimate the mechanical fields in the specimen tested in sodium. Indeed, the behavior law of the material was first extracted from tensile tests, while the embrittlement process is modeled through the introduction of a constant velocity crack using the node release technique. This numerical modelling is used as an inverse method to discuss a potential fracture criteria for LME.
||Planned: A print-only volume