High-Niobium bearing steel for base material of CRA clad UOE pipe

Y. Terada, H. Tamehiro, Ryuji Uemori, N. Maruyama, A. Takahashi, H. Ogawa

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

The manufacturing technology of corrosion resistant alloy (CRA) clad UOE pipe by applying thermo-mechanical control process (TMCP) has been studies. In order to obtain good pitting corrosion resistance in the Incoloy 825 layer, it is necessary to ensure complete recrystallization and suppress the precipitation of chromium carbides in the Incoloy 825 layer after rolling. To this end the clad plate was finish-rolled at high temperature and water-cooled after appropriate air cooling. However, in conventional steel, high temperature rolling considerably deteriorates the low-temperature toughness, therefore, it was found that increasing the niobium content causes the microstructure to refine remarkably and provides an excellent balance of strength and low-temperature toughness at a niobium content of about 0.1% even in high temperature rolling. the grain refinement by adding high niobium is attributable to suppression of austenite grain coarsening during slab-reheating by Nb(CN) particles, a rise in recrystallization stop temperature of austenite.

本文言語英語
ホスト出版物のタイトルProceedings of the International Offshore and Polar Engineering Conference
出版社Publ by Int Soc of Offshore and Polar Engineerns (ISOPE)
ページ172-179
ページ数8
ISBN(印刷版)1880653125
出版ステータス出版済み - 1 1 1994
外部発表はい
イベントProceedings of the 4th International Offshore and Polar Engineering Conference. Part 2 (of 4) - Osaka, Jpn
継続期間: 4 10 19944 15 1994

出版物シリーズ

名前Proceedings of the International Offshore and Polar Engineering Conference
2

その他

その他Proceedings of the 4th International Offshore and Polar Engineering Conference. Part 2 (of 4)
CityOsaka, Jpn
Period4/10/944/15/94

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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