[Cœur fissile et couverture tritigène : les matériaux de structure et leurs specifications]
Des matériaux ayant une excellente résistance aux effets d'irradiation sont indispensables au succès des futures centrales de fission et de fusion. On présente les critères de sélection, les éléments caractéristiques de la métallurgie et les principaux effets d'irradiation révélés par les programmes d'irradiation des matériaux retenus. A basse température (∼300 °C) les aciers ferritiques/martensitiques souffrent de fragilisation par l'hélium associée à un probable durcissement dû à la décomposition . Les cinétiques de durcissement et de fragilisation et tout particulièrement la saturation avec la dose sont des questions difficiles à trancher sur la seule base d'un programme expérimental. Des progrès importants sont encore nécessaires pour maîtriser la microstructure, la propreté inclusionnaire et l'assemblage des aciers renforcés par dispersion d'oxydes. Une modélisation physique telle que présentée dans ce volume doit servir de guide pour comprendre les mécanismes et fournir des solutions pour limiter la dégradation des propriétés en service.
High radiation resistant structural materials for fusion and fission nuclear power plants are a key issue for the development of both types of reactors. Selection criteria, elements of metallurgy of the selected materials, and the major issues as they are revealed by the results of the present development programmes, are presented. At low temperature (∼300 °C) ferritic/martensitic steels are suffering from He-embrittlement, associated with possible hardening due to unmixing. The kinetics of hardening and embrittlement versus dose, especially saturation with dose, are still open key issues, difficult to settle on the basis of a purely experimental programme. Important progress is still to be made in mastering the initial microstructure, inclusion cleanness and joining techniques of oxide dispersion strengthened steels for higher heat resistance. Physics modeling as presented in this issue should promote guidance to the understanding of the mechanisms involved, provide solutions to master the initial microstructure and phase stability, and mitigate the in-service property degradation.
Mot clés : Matériaux de structure, Acier martensitiques, Acier ferritiques, Composites $ {\text{SiC}}_{\mathrm{f}}/\text{SiC}$, Effets d'irradiation
Jean-Louis Boutard 1 ; Ana Alamo 2 ; Rainer Lindau 3 ; Michael Rieth 3
@article{CRPHYS_2008__9_3-4_287_0, author = {Jean-Louis Boutard and Ana Alamo and Rainer Lindau and Michael Rieth}, title = {Fissile core and {Tritium-Breeding} {Blanket:} structural materials and their requirements}, journal = {Comptes Rendus. Physique}, pages = {287--302}, publisher = {Elsevier}, volume = {9}, number = {3-4}, year = {2008}, doi = {10.1016/j.crhy.2007.11.004}, language = {en}, }
TY - JOUR AU - Jean-Louis Boutard AU - Ana Alamo AU - Rainer Lindau AU - Michael Rieth TI - Fissile core and Tritium-Breeding Blanket: structural materials and their requirements JO - Comptes Rendus. Physique PY - 2008 SP - 287 EP - 302 VL - 9 IS - 3-4 PB - Elsevier DO - 10.1016/j.crhy.2007.11.004 LA - en ID - CRPHYS_2008__9_3-4_287_0 ER -
%0 Journal Article %A Jean-Louis Boutard %A Ana Alamo %A Rainer Lindau %A Michael Rieth %T Fissile core and Tritium-Breeding Blanket: structural materials and their requirements %J Comptes Rendus. Physique %D 2008 %P 287-302 %V 9 %N 3-4 %I Elsevier %R 10.1016/j.crhy.2007.11.004 %G en %F CRPHYS_2008__9_3-4_287_0
Jean-Louis Boutard; Ana Alamo; Rainer Lindau; Michael Rieth. Fissile core and Tritium-Breeding Blanket: structural materials and their requirements. Comptes Rendus. Physique, Volume 9 (2008) no. 3-4, pp. 287-302. doi : 10.1016/j.crhy.2007.11.004. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2007.11.004/
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