|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||High Performance Steels
||New tensile specimens optimized to characterize the localized PRW weld areas of ODS steels
||Mohamed Mabrouki, Diogo Gonçalves, Serge Pascal, Denis Bertheau, Gibert Henaff, Angéline Poulon-Quintin
|On-Site Speaker (Planned)
Oxide Dispersion-Strengthened (ODS) ferrito-martensitic alloys are candidate materials for the fabrication of 4th generation nuclear reactor fuel cladding. These materials have optimal response to the loading conditions foreseen for these reactors (high temperature and irradiation doses), due to the homogenous dispersion of nano-oxides. The main objective of this study is to understand the effect of the pressure resistance welding (PRW) on the mechanical behavior of plug-clad assemblies. This solid phase welding process is known to limit the modification of the nano-oxides dispersion in the welded area compared to the fusion welding processes.
In order to assess the mechanical strength of welded assemblies, we designed a specific tensile specimen that ensures stress localization at the weld joint using finite element simulations. The experimental tests are carried out at two different temperatures. The aim of this study is to characterize the mechanical property evolutions of the welded area.
||Characterization, Joining, Nuclear Materials