TY - BOOK
T1 - Fracture toughness tests on Fe-Cr model alloys
AU - Toyama, Takeshi
AU - Ramesh, Mage
AU - Malerba, Lorenzo
A2 - Konstantinovic, Milan
N1 - RN - ER-234
Score = 2
PY - 2013/3
Y1 - 2013/3
N2 - Fracture toughness tests using the master curve method were performed on Fe-Cr model alloys with various Cr concentrations (2.5, 5, 9 and 12 wt.%) before and after neutron-irradiation at 300 °C in BR2 to the dose of 0.6 dpa, to evaluate the irradiation embrittlement. Charpy V-notch impact tests were also performed to compare the reference temperature in master curve, T0, and DBTT-shift.
It is found that the Cr content effect on T0 is not significant for unirradiated specimens. After irradiation, T0 for Fe-2.5Cr is slightly lower than the other three alloys, thus ΔT0 is lower than the others as well. From Charpy V-notch impact tests, however, Fe-2.5Cr and Fe-9Cr exhibit the same DBTT-shift.
For Fe-2.5Cr and Fe-9Cr alloys, the correlation of ΔT0 and ΔDBTT was tstudied and compared with the results of F/M steels and ferritic RPV steels . For the Fe-9Cr alloy, ΔT0 is significantly higher than ΔDBTT. In contrast, for the Fe-2.5Cr alloy, the obtained ΔT0 and ΔDBTT are similar to each other, differently from the case of Fe-9Cr. Further studies to understand the origin of the difference between Fe-2.5Cr and Fe-9Cr alloys are necessary.
AB - Fracture toughness tests using the master curve method were performed on Fe-Cr model alloys with various Cr concentrations (2.5, 5, 9 and 12 wt.%) before and after neutron-irradiation at 300 °C in BR2 to the dose of 0.6 dpa, to evaluate the irradiation embrittlement. Charpy V-notch impact tests were also performed to compare the reference temperature in master curve, T0, and DBTT-shift.
It is found that the Cr content effect on T0 is not significant for unirradiated specimens. After irradiation, T0 for Fe-2.5Cr is slightly lower than the other three alloys, thus ΔT0 is lower than the others as well. From Charpy V-notch impact tests, however, Fe-2.5Cr and Fe-9Cr exhibit the same DBTT-shift.
For Fe-2.5Cr and Fe-9Cr alloys, the correlation of ΔT0 and ΔDBTT was tstudied and compared with the results of F/M steels and ferritic RPV steels . For the Fe-9Cr alloy, ΔT0 is significantly higher than ΔDBTT. In contrast, for the Fe-2.5Cr alloy, the obtained ΔT0 and ΔDBTT are similar to each other, differently from the case of Fe-9Cr. Further studies to understand the origin of the difference between Fe-2.5Cr and Fe-9Cr alloys are necessary.
KW - fracture toughness
KW - Fe-Cr alloys
KW - embrittlement
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_128097
UR - http://knowledgecentre.sckcen.be/so2/bibref/10124
M3 - ER - External report
VL - 1
T3 - SCK•CEN Reports
BT - Fracture toughness tests on Fe-Cr model alloys
PB - SCK CEN
ER -