Low cycle fatigue behaviour of ODS steels for nuclear application

被引:6
|
作者
Kubena, I. [1 ]
Kruml, T. [1 ]
Fournier, B. [2 ]
Polak, J. [1 ]
机构
[1] Inst Phys Mat, Zizkova 22, Brno 61662, Czech Republic
[2] CEA Saclay, DEN, DANS,LC2M, DMN,SRMA, F-91191 Gif Sur Yvette, France
关键词
Generation IV nuclear reactors; fusion energy; ODS steels; low cycle fatigue; cyclic softening; MARTENSITIC STEEL; IRRADIATION; EUROFER-97;
D O I
10.4028/www.scientific.net/KEM.465.556
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
This study deals with the low cycle fatigue (LCF) behaviour of two steels strengthened by oxide dispersion. The ODS Eurofer steel shows cyclic softening, slower than in the case of the same steel without oxide particles. The 14Cr ODS ferritic steel is cyclically stable, even a slight cyclic hardening is observed at 650 degrees C. The reasons for this different behaviour lie probably in the less resistant matrix with a lot of weak subgrain boundaries in ODS Eurofer, because no clear difference in the oxide particles distribution was found.
引用
收藏
页码:556 / +
页数:2
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