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KAWASAKI STEEL TECHNICAL REPORT
No.41 ( October 1999 )
Advances in Iron and Steel Technologies,
Commemorating the 30th Anniversary of
Technical Research Laboratories

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Recent Activities in Research of Steel Plate Products

Keniti Amano, Fumimaru Kawabata, Takahiro Kubo
Synopsis:
Major Research subjects regarding steel plates in this decade have been picked up along with the market needs. Included are the metallurgy of strengthening and toughening, advancement of TMCP and micro alloying, HAZ toughness control, welding metallurgy, corrosion science, alloying metallurgy, fatigue and fracture control, and computer metallurgy. These researches have enabled the development of many useful steel plates, such as 50 mm thick 9% Ni steel plates, high CTOD steels for offshore structures, cold cracking free HT980 steel plates for penstock, TMCP type pipe and pressure vessel steel plates for sour service, anti-corrosion steel plates for ballast tank of ships, 13Cr-5Ni martensitic stainless steel plates, 2 300 MPa maraging steel and so on. One of the highlights is the extremely low carbon bainitic steel plate, which is an as-rolled type thick 570 MPa plate being weldable without pre-heating.
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