STEEL PLATES WITH EXCELLENT HAZ TOUGHNESS FOR OFFSHORE STRUCTURE

被引：0

作者：

Ichimiya, Katsuyuki ^{[1
]}

Hase, Kazukuni ^{[1
]}

Endo, Shigeru ^{[1
]}

Yuga, Masao ^{[2
]}

Hirata, Kenji ^{[3
]}

Matsunaga, Naoki ^{[3
]}

Suzuki, Shinichi ^{[4
]}

机构：

[1] JFE Steel Corp, Steel Res Lab, Kurashiki, Okayama, Japan

[2] JFE Steel Corp, Steel Res Lab, Kawasaki, Kanagawa, Japan

[3] JFE Steel Corp, West Japan Works, Kurashiki, Okayama, Japan

[4] JFE Steel Corp, Head Off, Tokyo, Japan

来源：

PROCEEDINGS OF THE ASME 32ND INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING - 2013, VOL 3 | 2013年

关键词：

D O I：

暂无

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

In the field of offshore structure, the strength and the toughness required for steel plates used for oil resource development become higher as the installation areas of the structures move into arctic and deep water areas. High strength steel plates for offshore structures, which meet the low temperature specification, have been developed. Excellent properties of the steel plates have been achieved by micro-alloying, the latest controlled rolling and accelerated cooling technology. Excellent properties of weld joints have been also achieved by advanced metallurgical techniques, which are grain-refinement of the coarse grain heat affected zone (CGHAZ), reduction of Martensite-Austenite (M-A) constituent in inter-critically CGHAZ (ICCGHAZ), and improvement of the matrix toughness. These steels are designed for excellent weldability due to low weld cracking parameter (PGA) value up to 550 MPa class in yield stress, and also up to 101.6 mm in thickness with 420 MPa class in yield stress, and satisfying -40 degrees C of crack tip opening displacement (CTOD) temperature specification for offshore structure.

引用

页数：6

共 8 条

[1]

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[2]

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[3]

Fumimaru Kawabata, 1993, J SOC NAVAL ARCHITEC, V173, P349

[4]

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[5]

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[6]

Nakano Yoshifumi, 1986, KAWASAKI STEEL TECH, V18, P301

[7]

Omata Kazuo, 2002, NKK GIHO, P57

[8]

Tanigawa Osamu, 1993, KAWATETSU GIHO, V25, P13

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