TY - JOUR
T1 - Characterization of the oxide particles in Al-added high-Cr ODS ferritic steels
AU - Zhang, C. H.
AU - Kimura, A.
AU - Kasada, R.
AU - Jang, J.
AU - Kishimoto, H.
AU - Yang, Y. T.
N1 - Funding Information:
A part of the present study includes the results of “R&D of corrosion resistant super ODS steel for highly efficient nuclear systems” entrusted to Kyoto University by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT). Part of the work was also supported by the National Science Foundation of China ( NSFC , Grant No. 10975165 ). One of us (CHZ) would thank IAE, Kyoto University for the support of his visit to the institute. We also thank Mr. S.H. Noh (IAE, Kyoto University) for his help in the specimen preparation.
PY - 2011/10/1
Y1 - 2011/10/1
N2 - In the present work, microstructures of dispersoids in two Al-added high-Cr ODS ferritic steels (including the commercial MA956, and another ODS steel with a similar composition recently developed in Kyoto University) were studied. The study with transmission electron microscopy (TEM) of both the thin-foil specimens and the extraction replica specimens showed that the nano-sized oxides in the two ODS steels consist mainly of a complex Y-Al-O compound (YAlO 3) in a perovskite structure (i.e. YAP), while other oxide particles with different chemical composition or crystalline structures are in significantly lower number density. The comparison between the two kinds of ODS steels shows that the size distribution and the number density of the oxide particles significantly depends on the conditions of fabrication. Mechanisms underlying the processes were discussed.
AB - In the present work, microstructures of dispersoids in two Al-added high-Cr ODS ferritic steels (including the commercial MA956, and another ODS steel with a similar composition recently developed in Kyoto University) were studied. The study with transmission electron microscopy (TEM) of both the thin-foil specimens and the extraction replica specimens showed that the nano-sized oxides in the two ODS steels consist mainly of a complex Y-Al-O compound (YAlO 3) in a perovskite structure (i.e. YAP), while other oxide particles with different chemical composition or crystalline structures are in significantly lower number density. The comparison between the two kinds of ODS steels shows that the size distribution and the number density of the oxide particles significantly depends on the conditions of fabrication. Mechanisms underlying the processes were discussed.
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U2 - 10.1016/j.jnucmat.2010.12.063
DO - 10.1016/j.jnucmat.2010.12.063
M3 - Article
AN - SCOPUS:80053593401
VL - 417
SP - 221
EP - 224
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - 1-3
ER -