Pre- and post-deformation microstructures of oxide dispersion strengthened ferritic steels

Ryuta Kasada; N. Toda; K. Yutani; H. S. Cho; H. Kishimoto; A. Kimura

doi:10.1016/j.jnucmat.2007.03.141

Pre- and post-deformation microstructures of oxide dispersion strengthened ferritic steels

Ryuta Kasada, N. Toda, K. Yutani, H. S. Cho, H. Kishimoto, A. Kimura

Research output: Contribution to journal › Article › peer-review

92 Citations (Scopus)

Abstract

Pre- and post-deformation microstructures and tensile properties of the newly-developed oxide dispersion strengthened (ODS) ferritic steels, K1 (Fe-19Cr-0.3W-0.3Ti-0.3Y₂O₃) and K4 (Fe-19Cr-4Al-2W-0.3Ti-0.3Y₂O₃) for nuclear fusion reactors and Generation IV nuclear fission systems were investigated. The nano-oxides of the K1 were cubic pyrochlore Y₂Ti₂O₇, while those of K4 were mainly perovskite AlYO₃, which was confirmed by transmission electron microscopy and X-ray diffraction (XRD) analyses. K1 was found to have much higher strength than K4 and the difference in the nano-oxides of K1 and K4 can account for this difference. Most of the extracted residues in the K1 and K4 identified by XRD consisted of M₂₃C₆ carbides.

Original language	English
Pages (from-to)	222-228
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	367-370 A
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jnucmat.2007.03.141
Publication status	Published - 2007 Aug 1
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Materials Science(all)
Nuclear Energy and Engineering

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title = "Pre- and post-deformation microstructures of oxide dispersion strengthened ferritic steels",

abstract = "Pre- and post-deformation microstructures and tensile properties of the newly-developed oxide dispersion strengthened (ODS) ferritic steels, K1 (Fe-19Cr-0.3W-0.3Ti-0.3Y2O3) and K4 (Fe-19Cr-4Al-2W-0.3Ti-0.3Y2O3) for nuclear fusion reactors and Generation IV nuclear fission systems were investigated. The nano-oxides of the K1 were cubic pyrochlore Y2Ti2O7, while those of K4 were mainly perovskite AlYO3, which was confirmed by transmission electron microscopy and X-ray diffraction (XRD) analyses. K1 was found to have much higher strength than K4 and the difference in the nano-oxides of K1 and K4 can account for this difference. Most of the extracted residues in the K1 and K4 identified by XRD consisted of M23C6 carbides.",

author = "Ryuta Kasada and N. Toda and K. Yutani and Cho, {H. S.} and H. Kishimoto and A. Kimura",

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T1 - Pre- and post-deformation microstructures of oxide dispersion strengthened ferritic steels

AU - Kasada, Ryuta

AU - Toda, N.

AU - Yutani, K.

AU - Cho, H. S.

AU - Kishimoto, H.

AU - Kimura, A.

PY - 2007/8/1

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N2 - Pre- and post-deformation microstructures and tensile properties of the newly-developed oxide dispersion strengthened (ODS) ferritic steels, K1 (Fe-19Cr-0.3W-0.3Ti-0.3Y2O3) and K4 (Fe-19Cr-4Al-2W-0.3Ti-0.3Y2O3) for nuclear fusion reactors and Generation IV nuclear fission systems were investigated. The nano-oxides of the K1 were cubic pyrochlore Y2Ti2O7, while those of K4 were mainly perovskite AlYO3, which was confirmed by transmission electron microscopy and X-ray diffraction (XRD) analyses. K1 was found to have much higher strength than K4 and the difference in the nano-oxides of K1 and K4 can account for this difference. Most of the extracted residues in the K1 and K4 identified by XRD consisted of M23C6 carbides.

AB - Pre- and post-deformation microstructures and tensile properties of the newly-developed oxide dispersion strengthened (ODS) ferritic steels, K1 (Fe-19Cr-0.3W-0.3Ti-0.3Y2O3) and K4 (Fe-19Cr-4Al-2W-0.3Ti-0.3Y2O3) for nuclear fusion reactors and Generation IV nuclear fission systems were investigated. The nano-oxides of the K1 were cubic pyrochlore Y2Ti2O7, while those of K4 were mainly perovskite AlYO3, which was confirmed by transmission electron microscopy and X-ray diffraction (XRD) analyses. K1 was found to have much higher strength than K4 and the difference in the nano-oxides of K1 and K4 can account for this difference. Most of the extracted residues in the K1 and K4 identified by XRD consisted of M23C6 carbides.

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