Ferritic and martensitic ODS steel resistance upset welding of fuel claddings: Weldability assessment and metallurgical effects

JOURNAL OF NUCLEAR MATERIALS

卷:518

Article

Doyen, Olivier¹  Le Gloannec, Brendan^1,4  Deschamps, Alexis²  De Geuser, Frederic²  Pouvreau, Cedric³  Poulon-Quintin, Angeline⁴ 

[1] Univ Paris Saclay, CEA, Den Serv Etud Mecan & Therm SEMT, F-91191 Gif Sur Yvette, France

[2] Univ Grenoble Alpes, SIMAP Lab, Grenoble, France

[3] Univ Bretagne Sud, Ctr Rech, IRDL, Rue ST Maude, F-56100 Lorient, France

[4] Univ Bordeaux, ICMCB, CNRS, 87 Ave Dr A Schweitzer, F-33608 Pessac, France

关键词: Resistance upset welding;    ODS steel;    Nuclear fuel cladding;    Microstructure;    Nano-precipitates;    EBSD;    SAXS;   

DOI  :  10.1016/j.jnucmat.2019.03.013

来源: Elsevier

【 摘 要 】

Development and characterization of clad-to-plug resistance upset welds is presented for two oxide dispersion strengthened steels candidates for sodium-cooled fast reactors fuel cladding: 9Cr ferrito-martensitic steel and 14Cr ferritic steel. A comparative approach is adopted regarding these two materials implying weldability studies and weld mechanical strength tests. A special attention is paid on welding metallurgical effects on the specific microstructure of these materials. Among others, some major grain property modifications by dynamic recrystallization and a slight modification of precipitate sizes and volume fraction are found and discussed. (C) 2019 Elsevier B.V. All rights reserved.

【 授权许可】

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