WO2015088040A8 - 鋼板およびその製造方法 - Google Patents

鋼板およびその製造方法 Download PDF

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WO2015088040A8
WO2015088040A8 PCT/JP2014/083321 JP2014083321W WO2015088040A8 WO 2015088040 A8 WO2015088040 A8 WO 2015088040A8 JP 2014083321 W JP2014083321 W JP 2014083321W WO 2015088040 A8 WO2015088040 A8 WO 2015088040A8
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steel plate
less
manufacturing same
toughness
structures
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PCT/JP2014/083321
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French (fr)
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WO2015088040A1 (ja
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克行 一宮
茂樹 木津谷
長谷　和邦
遠藤　茂
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Ｊｆｅスチール株式会社
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Priority to EP14869973.9A priority Critical patent/EP3081662B1/en
Priority to KR1020167016202A priority patent/KR101846759B1/ko
Priority to US15/103,093 priority patent/US20160312327A1/en
Priority to CN201480067195.XA priority patent/CN105980588B/zh
Priority to JP2015524556A priority patent/JP5950045B2/ja
Publication of WO2015088040A1 publication Critical patent/WO2015088040A1/ja
Publication of WO2015088040A8 publication Critical patent/WO2015088040A8/ja

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    • C—CHEMISTRY; METALLURGY
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
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    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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    • C—CHEMISTRY; METALLURGY
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    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
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    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/004—Dispersions; Precipitations

Abstract

　本発明に従い、所定の鋼板成分を有すると共に、Ｂを０．０００３％未満に抑制し、残部がＦｅおよび不可避的不純物からなる鋼板成分を有し、Ｔｉ、ＮｂおよびＭｏを、Ｔｉ量（〔Ｔｉ〕）、Ｎｂ量（〔Ｎｂ〕）およびＭｏ量（〔Ｍｏ〕）が、〔Ｎｂ〕/（〔Ｔｉ〕+〔Ｎｂ〕+〔Ｍｏ〕）≧０．３の関係を満足する範囲で含みかつ平均粒子径が２０ｎｍ以下の析出物を有する鋼板とすることによって、海洋構造物や船舶、圧力容器、ペンストックなど鉄鋼構造物に用いて好適な、降伏応力（ＹＳ）が４６０ＭＰａ以上で、多層溶接部の溶接熱影響部の低温靭性（ＣＴＯＤ特性）と溶接施工時の熱処理後の強度靭性（ＰＷＨＴ特性）に優れる厚肉高張力鋼板を得ることができる。
PCT/JP2014/083321 2013-12-12 2014-12-10 鋼板およびその製造方法 WO2015088040A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14869973.9A EP3081662B1 (en) 2013-12-12 2014-12-10 Steel plate and method for manufacturing same
KR1020167016202A KR101846759B1 (ko) 2013-12-12 2014-12-10 강판 및 그 제조 방법
US15/103,093 US20160312327A1 (en) 2013-12-12 2014-12-10 Steel plate and method for manufacturing same (as amended)
CN201480067195.XA CN105980588B (zh) 2013-12-12 2014-12-10 钢板及其制造方法
JP2015524556A JP5950045B2 (ja) 2013-12-12 2014-12-10 鋼板およびその製造方法

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JP2013257401 2013-12-12
JP2013-257401 2013-12-12

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WO2015088040A1 WO2015088040A1 (ja) 2015-06-18
WO2015088040A8 true WO2015088040A8 (ja) 2016-05-06

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US (1) US20160312327A1 (ja)
EP (1) EP3081662B1 (ja)
JP (1) JP5950045B2 (ja)
KR (1) KR101846759B1 (ja)
CN (1) CN105980588B (ja)
WO (1) WO2015088040A1 (ja)

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US20160312327A1 (en) 2016-10-27
WO2015088040A1 (ja) 2015-06-18
CN105980588A (zh) 2016-09-28
EP3081662B1 (en) 2019-11-13
CN105980588B (zh) 2018-04-27
EP3081662A4 (en) 2016-12-07
KR101846759B1 (ko) 2018-04-06
JPWO2015088040A1 (ja) 2017-03-16
EP3081662A1 (en) 2016-10-19
KR20160088375A (ko) 2016-07-25

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