FR3084890B1 - Acier inoxydable duplex ayant une tenacite a basses temperatures superieure - Google Patents

Acier inoxydable duplex ayant une tenacite a basses temperatures superieure Download PDF

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Publication number
FR3084890B1
FR3084890B1 FR1908362A FR1908362A FR3084890B1 FR 3084890 B1 FR3084890 B1 FR 3084890B1 FR 1908362 A FR1908362 A FR 1908362A FR 1908362 A FR1908362 A FR 1908362A FR 3084890 B1 FR3084890 B1 FR 3084890B1
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stainless steel
duplex stainless
low temperature
superior low
temperature tenacity
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FR1908362A
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FR3084890A1 (fr
Inventor
Takayuki Watanabe
Fugao Wei
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Nippon Yakin Kogyo Co Ltd
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Nippon Yakin Kogyo Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • 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
    • 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
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • 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
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • 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
    • 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
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • C—CHEMISTRY; METALLURGY
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • 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
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • 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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • 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
    • C—CHEMISTRY; METALLURGY
    • 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
    • C21D2211/001—Austenite
    • C—CHEMISTRY; METALLURGY
    • 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
    • C21D2211/005—Ferrite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

L’invention concerne un acier inoxydable duplex qui a réduit le risque de précipitation de nitrure d’Al et de nitrure de Cr, qui sont des précipités indésirables, et a une ténacité à basses températures supérieure. L’acier inoxydable duplex a en % en masse, indiqué comme « % », C : 0,001 à 0,030 %, Si : 0,05 à 0,5 %, S : pas plus de 0,002 %, Ni : 6 à 7,5 %, Cr :23 à 26 %, Mo : 2 à 4,0 %, N : 0,20 à 0,40 %, Al : 0,005 à 0,03 %, Mn : 0,05 à 0,3 %, B : 0,0001 à 0,0050 % et Fe, et le reste étant des impuretés inévitables. L’acier inoxydable duplex a une valeur d’impact non inférieure à 87,5 J/cm2 à -46±2 °C comme défini dans les normes industrielles japonaises Z2242.Figure 1
FR1908362A 2018-08-08 2019-07-23 Acier inoxydable duplex ayant une tenacite a basses temperatures superieure Active FR3084890B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-149215 2018-08-08
JP2018149215A JP6510714B1 (ja) 2018-08-08 2018-08-08 低温靭性に優れる二相ステンレス鋼

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FR3084890A1 FR3084890A1 (fr) 2020-02-14
FR3084890B1 true FR3084890B1 (fr) 2023-02-10

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FR1908362A Active FR3084890B1 (fr) 2018-08-08 2019-07-23 Acier inoxydable duplex ayant une tenacite a basses temperatures superieure

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US (1) US11535914B2 (fr)
JP (1) JP6510714B1 (fr)
CN (1) CN110408842B (fr)
FR (1) FR3084890B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6776469B1 (ja) * 2020-03-13 2020-10-28 日本冶金工業株式会社 二相ステンレス鋼とその製造方法
CN113817895A (zh) * 2020-06-19 2021-12-21 江苏新马新材料开发有限公司 一种2205双相钢的制造工艺方法
CN113528928A (zh) * 2021-07-15 2021-10-22 山西太钢不锈钢股份有限公司 精密带钢用铁镍基合金连铸坯及其生产方法

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JPH07197130A (ja) * 1993-12-29 1995-08-01 Nkk Corp 溶接部の耐孔食性と低温靭性に優れた二相ステンレス溶接鋼管の製造方法
JPH08170153A (ja) * 1994-12-19 1996-07-02 Sumitomo Metal Ind Ltd 高耐食性２相ステンレス鋼
JPH1060598A (ja) * 1996-08-19 1998-03-03 Nkk Corp 耐海水性用析出強化型二相ステンレス鋼
CN1068385C (zh) * 1996-10-14 2001-07-11 冶金工业部钢铁研究总院 超低碳双相不锈钢及其制造方法
JP2005105346A (ja) * 2003-09-30 2005-04-21 Nippon Steel Corp 耐食性・靭性の優れた二相ステンレス鋼の製造方法
JP5082509B2 (ja) * 2007-03-06 2012-11-28 住友金属工業株式会社 継目無鋼管用ビレットおよび継目無鋼管
JP5018863B2 (ja) * 2009-11-13 2012-09-05 住友金属工業株式会社 耐アルカリ性に優れた二相ステンレス鋼
KR101239517B1 (ko) * 2010-12-28 2013-03-05 주식회사 포스코 표면품질이 우수한 듀플렉스 스테인리스강 및 이의 제조방법
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Also Published As

Publication number Publication date
CN110408842A (zh) 2019-11-05
FR3084890A1 (fr) 2020-02-14
CN110408842B (zh) 2020-11-24
JP2020023736A (ja) 2020-02-13
US20200048748A1 (en) 2020-02-13
US11535914B2 (en) 2022-12-27
JP6510714B1 (ja) 2019-05-08

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