TY - GEN
T1 - Superior radiation resistance of ODS ferritic steels
AU - Kasada, Ryuta
AU - Takahashi, Hiromasa
AU - Kishimoto, Hirotatsu
AU - Yutani, Kentaro
AU - Kimura, Akihiko
PY - 2010
Y1 - 2010
N2 - The oxide dispersion strengthened (ODS) ferritic steel and non-ODS reduced-activation ferritic (RAF) steel were irradiated at 773 K by means of a dual-beam ion irradiation technique to a dose of 0.4 dpa with simultaneous helium implantation up to 1000 appm. Microstructural changes were investigated by transmission electron microscopy. The RAF steel showed a preferential formation of cavities at grain boundaries, precipitate interfaces and dislocations. In contrast, the ODS ferritic steel showed a homogeneous and fine distribution of cavities in the matrix. This paper discusses the superior resistance of the ODS ferritic steel against development of cavities in terms of the effects of nano-oxide particles dispersed in the matrix.
AB - The oxide dispersion strengthened (ODS) ferritic steel and non-ODS reduced-activation ferritic (RAF) steel were irradiated at 773 K by means of a dual-beam ion irradiation technique to a dose of 0.4 dpa with simultaneous helium implantation up to 1000 appm. Microstructural changes were investigated by transmission electron microscopy. The RAF steel showed a preferential formation of cavities at grain boundaries, precipitate interfaces and dislocations. In contrast, the ODS ferritic steel showed a homogeneous and fine distribution of cavities in the matrix. This paper discusses the superior resistance of the ODS ferritic steel against development of cavities in terms of the effects of nano-oxide particles dispersed in the matrix.
KW - Ferritic steel
KW - Fusion reactor
KW - Helium
KW - ODS
KW - Radiation effect
UR - http://www.scopus.com/inward/record.url?scp=77955532020&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955532020&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.654-656.2791
DO - 10.4028/www.scientific.net/MSF.654-656.2791
M3 - Conference contribution
AN - SCOPUS:77955532020
SN - 0878492550
SN - 9780878492558
T3 - Materials Science Forum
SP - 2791
EP - 2794
BT - PRICM7
PB - Trans Tech Publications Ltd
T2 - 7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
Y2 - 2 August 2010 through 6 August 2010
ER -