Production and Properties of Nano-scale Oxide Dispersion Strengthened (ODS) 9Cr Martensitic Steel Claddings

Ukai, Shigeharu; Kaito, Takeji; Ohtsuka, Satoshi et al.

ISIJ International, 2003, 43(12), 2038-2045

Permalink : https://hdl.handle.net/2115/76318

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アクセス権
open access
URI
https://hdl.handle.net/2115/76318
タイトル
Production and Properties of Nano-scale Oxide Dispersion Strengthened (ODS) 9Cr Martensitic Steel Claddings
著者
Ukai, Shigeharu ; Kaito, Takeji ; Ohtsuka, Satoshi ; Narita, Tsuyoshi ; Fujiwara, Masayuki ; Kobayashi, Toshimi
e-Rad_Researcher
00421529
著者名
Ukai, Shigeharu
著者名
Kaito, Takeji
著者名
Ohtsuka, Satoshi
著者名
Narita, Tsuyoshi
著者名
Fujiwara, Masayuki
著者名
Kobayashi, Toshimi
言語
英語
キーワード
ODS
yttria
phase transformation
martensite
ferrite
excess oxygen
cladding
tensile strength
creep rupter strength
cold rolling
grain size
発行日
2003-12-15
出版者
Iron and Steel Institute of Japan
日本鉄鋼協会
収録物名
ISIJ International
巻(号)
43(12)
ページ
2038-2045
抄録
The 9Cr-ODS martensitic steel claddings were developed by cold-rolling and subsequent heat-treatment. The standard chemical composition is Fe-0.13C-9Cr-2W-0.2Ti-0.35Y2O3. The substantially elongated grains formed by cold-rolling turned out to be into equi-axied grains by ferrite to austenite phase transformation at the final heat-treatment. The produced claddings have the tempered martensitic structure and excess oxygen of 0.060 mass%. The superior tensile and creep rupture strength were shown in the produced cladding, compared with conventional ferritic (PNC-FMS) and even austenitic (PNC316) claddings at higher temperature and extended time. The strength improvement is attributed to finely distributed nano-scale complex oxide. The coarser ferrite grains produced by slow cooling make further improvement in the tensile and creep rupture strength beyond those of tempered martensite at high temperature and longer testing time. The higher excess oxygen content of 0.137 mass% prevents fine distribution of the oxide particles that lead to inferior high temperature tensile and creep strength.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
権利情報
著作権は日本鉄鋼協会にある
PISSN
0915-1559
NCID
AA10680712
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.2355/isijinternational.43.2038