TY - JOUR
T1 - On the correlation between irradiation-induced microstructural features and the hardening of reactor pressure vessel steels
AU - Lambrecht, Marlies
AU - Meslin, Estelle
AU - Malerba, Lorenzo
AU - Hernandez-Mayoral, Mercedes
AU - Bergner, Frank
AU - Pareige, Philippe
AU - Radiguet, Bertrand
AU - Al Mazouzi, Abderrahim
A2 - Vankeerberghen, Marc
N1 - Score = 10
PY - 2010/11/1
Y1 - 2010/11/1
N2 - A correlation is attempted between microstructural observations by various complementary techniques, which have been implemented within the PERFECT project and the hardening measured by tensile tests of reactor pressure vessel steel and model alloys after irradiation to a dose of similar to 7 x 10^19 n/cm². This is done, using the simple hardening model embodied by the Orowan equation and applying the most suitable superposition law, as suggested by a parametric study using the DUPAIR line tension code. It is found that loops are very strong obstacles to dislocation motion, but due to their low concentration, they only play a minor role in the hardening itself. For the precipitates, the contrary is found, although they are quite soft (due to their very small sizes and their coherent nature), they still play the dominant role in the hardening. Vacancy clusters are important for the formation of both loops and precipitates, but they will play almost no role in the hardening by themselves.
AB - A correlation is attempted between microstructural observations by various complementary techniques, which have been implemented within the PERFECT project and the hardening measured by tensile tests of reactor pressure vessel steel and model alloys after irradiation to a dose of similar to 7 x 10^19 n/cm². This is done, using the simple hardening model embodied by the Orowan equation and applying the most suitable superposition law, as suggested by a parametric study using the DUPAIR line tension code. It is found that loops are very strong obstacles to dislocation motion, but due to their low concentration, they only play a minor role in the hardening itself. For the precipitates, the contrary is found, although they are quite soft (due to their very small sizes and their coherent nature), they still play the dominant role in the hardening. Vacancy clusters are important for the formation of both loops and precipitates, but they will play almost no role in the hardening by themselves.
KW - Model alloys
KW - embrittlement
KW - state-of-the-art experimental techniques
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_110909
UR - http://knowledgecentre.sckcen.be/so2/bibref/7655
U2 - 10.1016/j.jnucmat.2010.05.020
DO - 10.1016/j.jnucmat.2010.05.020
M3 - Article
SN - 0022-3115
VL - 406
SP - 84
EP - 89
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1
ER -