Effect of the bainitic and martensitic microstructures on the hardening and embrittlement under neutron irradiation of a reactor pressure vessel steel - Archive ouverte HAL Access content directly
Journal Articles Journal of Nuclear Materials Year : 2015

Effect of the bainitic and martensitic microstructures on the hardening and embrittlement under neutron irradiation of a reactor pressure vessel steel

(1) , (2) , (1) , (1) , (1)
1
2

Abstract

The hardening and the embrittlement under neutron irradiation of a RPV steel considering three different coarse grained microstructures (bainite, bainite-martensite and martensite) have been investigated. Bainite and martensite have a comparable irradiation induced temperature transition shifts but hardening is smaller for martensite than for bainite. Bainite appears to be less sensitive to non-hardening embrittlement (NHE) than martensite. The onset of brittle intergranular fracture after irradiation for the martensitic microstructure is likely the origin of this difference of sensitivity to NHE. However, the bainitic-martensitic microstructure has the largest irradiation induced shift and is the most sensitive to NHE amongst all the tested microstructures. These results show that the microstructure is an important parameter to control the irradiation induced non hardening embrittlement and the enhancement of the brittle intergranular fracture in reactor pressure vessel steels.
Fichier principal
Vignette du fichier
201500000831.pdf (2.14 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

cea-02385950 , version 1 (29-11-2019)

Identifiers

Cite

Bernard Marini, X. Averty, P. Wident, P Forget, F. Barcelo. Effect of the bainitic and martensitic microstructures on the hardening and embrittlement under neutron irradiation of a reactor pressure vessel steel. Journal of Nuclear Materials, 2015, 465, pp.20-27. ⟨10.1016/j.jnucmat.2015.05.023⟩. ⟨cea-02385950⟩
44 View
237 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More