Good low-temperature toughness of the base material (BM) and weld heat-affected zone (HAZ), and good deformability of the pipe body together with good field weldability are required for X100 linepipe to ensure the safety of pipelines and to facilitate field welding. It is, however, very difficult to attain these properties simultaneously because of the large addition of alloys. The technology of improving HAZ toughness by reducing carbon content through the reduction of M-A constituents harmful to low-temperature toughness was developed, and accelerated cooling after controlled rolling was applied to attain good low-temperature toughness of BM and high uniform elongation together with sufficient strength corresponding to X100. Two newly developed types of X100 linepipe, a “high HAZ toughness type” and a “high uniform elongation type”, exhibited excellent low-temperature toughness of the HAZ and high uniform elongation together with sufficient strength, respectively.
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ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering
June 8–13, 2003
Cancun, Mexico
Conference Sponsors:
- Ocean, Offshore, and Arctic Engineering Division
ISBN:
0-7918-3683-5
PROCEEDINGS PAPER
X100 Linepipe With Excellent HAZ Toughness and Deformability Available to Purchase
Yoshio Terada,
Yoshio Terada
Nippon Steel Corporation, Kimitsu, Japan
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Hiroshi Tamehiro,
Hiroshi Tamehiro
Nippon Steel Corporation, Futtsu, Japan
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Hiroshi Morimoto,
Hiroshi Morimoto
Nippon Steel Corporation, Futtsu, Japan
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Takuya Hara,
Takuya Hara
Nippon Steel Corporation, Futtsu, Japan
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Eiji Tsuru,
Eiji Tsuru
Nippon Steel Corporation, Futtsu, Japan
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Hitoshi Asahi,
Hitoshi Asahi
Nippon Steel Corporation, Futtsu, Japan
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Masaaki Sugiyama,
Masaaki Sugiyama
Nippon Steel Corporation, Futtsu, Japan
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Naoki Doi,
Naoki Doi
Nippon Steel Corporation, Kimitsu, Japan
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Masahiko Murata,
Masahiko Murata
Nippon Steel Corporation, Kimitsu, Japan
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Naoshi Ayukawa
Naoshi Ayukawa
Nippon Steel Corporation, Tokyo, Japan
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Yoshio Terada
Nippon Steel Corporation, Kimitsu, Japan
Hiroshi Tamehiro
Nippon Steel Corporation, Futtsu, Japan
Hiroshi Morimoto
Nippon Steel Corporation, Futtsu, Japan
Takuya Hara
Nippon Steel Corporation, Futtsu, Japan
Eiji Tsuru
Nippon Steel Corporation, Futtsu, Japan
Hitoshi Asahi
Nippon Steel Corporation, Futtsu, Japan
Masaaki Sugiyama
Nippon Steel Corporation, Futtsu, Japan
Naoki Doi
Nippon Steel Corporation, Kimitsu, Japan
Masahiko Murata
Nippon Steel Corporation, Kimitsu, Japan
Naoshi Ayukawa
Nippon Steel Corporation, Tokyo, Japan
Paper No:
OMAE2003-37392, pp. 287-294; 8 pages
Published Online:
January 23, 2009
Citation
Terada, Y, Tamehiro, H, Morimoto, H, Hara, T, Tsuru, E, Asahi, H, Sugiyama, M, Doi, N, Murata, M, & Ayukawa, N. "X100 Linepipe With Excellent HAZ Toughness and Deformability." Proceedings of the ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering. Volume 3: Materials Technology; Ocean Engineering; Polar and Arctic Sciences and Technology; Workshops. Cancun, Mexico. June 8–13, 2003. pp. 287-294. ASME. https://doi.org/10.1115/OMAE2003-37392
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