WO2021010599A3 - 강도가 향상된 오스테나이트계 스테인리스강 및 그 제조 방법 - Google Patents

강도가 향상된 오스테나이트계 스테인리스강 및 그 제조 방법 Download PDF

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WO2021010599A3
WO2021010599A3 PCT/KR2020/007524 KR2020007524W WO2021010599A3 WO 2021010599 A3 WO2021010599 A3 WO 2021010599A3 KR 2020007524 W KR2020007524 W KR 2020007524W WO 2021010599 A3 WO2021010599 A3 WO 2021010599A3
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stainless steel
austenitic stainless
improved strength
manufacturing same
less
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PCT/KR2020/007524
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English (en)
French (fr)
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WO2021010599A2 (ko
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송석원
김학
김지수
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주식회사 포스코
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Priority to CN202080048691.6A priority Critical patent/CN114040990B/zh
Priority to EP20840538.1A priority patent/EP3978643A4/en
Priority to JP2022502551A priority patent/JP7324361B2/ja
Priority to US17/622,474 priority patent/US20220267875A1/en
Publication of WO2021010599A2 publication Critical patent/WO2021010599A2/ko
Publication of WO2021010599A3 publication Critical patent/WO2021010599A3/ko

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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
    • 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
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0231—Warm 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold 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
    • 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
    • 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
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • 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

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  • 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 Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

강도가 향상된 오스테나이트계 스테인리스강이 개시된다. 개시된 오스테나이트계 스테인리스강은 중량%로, C: 0.06 내지 0.15%, N: 0.3% 이하(0은 제외), Si: 1.0% 초과 2.0% 이하, Mn: 5.0 내지 7.0%, Cr: 15.0 내지 16.0%, Ni: 0.3% 이하(0은 제외), Cu: 2.5% 이하(0은 제외)를 포함하고, 나머지는 Fe 및 불가피한 불순물을 포함하고, 하기 식(1), 식(2) 및 식(3)을 만족하는 것을 특징으로 한다. 식(1): 15≤ 0.2Mn+337C+1.2Cu-1.7Cr+3.3Ni+78N-3.5Si+3.0 ≤30 식(2): 2.3≤ [Cr+1.5Si]/[Ni+0.31Mn+22C+1Cu+14.2N] ≤3.0 식(3): 1.0≤ ((Cr+1.5Si+18)/(Ni+0.52Cu+30(C+N)+0.5Mn+36)+0.262)*161-161 ≤7.0 여기서, C, N, Si, Mn, Cr, Ni, Cu 는 각 원소의 함량(중량%)을 의미한다.
PCT/KR2020/007524 2019-07-17 2020-06-10 강도가 향상된 오스테나이트계 스테인리스강 및 그 제조 방법 WO2021010599A2 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202080048691.6A CN114040990B (zh) 2019-07-17 2020-06-10 具有改善的强度的奥氏体不锈钢和用于制造其的方法
EP20840538.1A EP3978643A4 (en) 2019-07-17 2020-06-10 AUSTENITIC STAINLESS STEEL WITH IMPROVED STRENGTH AND METHOD OF MANUFACTURING THEREOF
JP2022502551A JP7324361B2 (ja) 2019-07-17 2020-06-10 強度が向上したオーステナイト系ステンレス鋼およびその製造方法
US17/622,474 US20220267875A1 (en) 2019-07-17 2020-06-10 Austenitic stainless steel having improved strength, and method for manufacturing same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2019-0086348 2019-07-17
KR1020190086348A KR102268906B1 (ko) 2019-07-17 2019-07-17 강도가 향상된 오스테나이트계 스테인리스강 및 그 제조 방법

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WO2021010599A2 WO2021010599A2 (ko) 2021-01-21
WO2021010599A3 true WO2021010599A3 (ko) 2021-03-11

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US (1) US20220267875A1 (ko)
EP (1) EP3978643A4 (ko)
JP (1) JP7324361B2 (ko)
KR (1) KR102268906B1 (ko)
CN (1) CN114040990B (ko)
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Publication number Priority date Publication date Assignee Title
KR20230091618A (ko) * 2021-12-16 2023-06-23 주식회사 포스코 오스테나이트계 스테인리스 강 및 그 제조방법
CN115505846B (zh) * 2022-09-26 2023-06-30 福建青拓特钢技术研究有限公司 一种高表面质量的303易切削不锈钢盘条及其制造方法

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KR20100097741A (ko) * 2008-01-22 2010-09-03 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 가공성과 충격 흡수 특성이 우수한 구조 부재용 페라이트ㆍ오스테나이트계 스테인리스 강판 및 그 제조 방법
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KR20180018908A (ko) * 2016-08-10 2018-02-22 주식회사 포스코 니켈 저감형 듀플렉스 스테인리스강 및 이의 제조 방법
KR101844573B1 (ko) * 2016-11-14 2018-04-03 주식회사 포스코 열간가공성이 우수한 듀플렉스 스테인리스강 및 그 제조방법

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US20220267875A1 (en) 2022-08-25
JP2022540681A (ja) 2022-09-16
EP3978643A4 (en) 2022-08-17
EP3978643A2 (en) 2022-04-06
CN114040990A (zh) 2022-02-11
KR102268906B1 (ko) 2021-06-25
JP7324361B2 (ja) 2023-08-09
CN114040990B (zh) 2023-04-04
KR20210009606A (ko) 2021-01-27
WO2021010599A2 (ko) 2021-01-21

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