WO2016105059A8 - 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법 - Google Patents
취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법 Download PDFInfo
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- WO2016105059A8 WO2016105059A8 PCT/KR2015/014049 KR2015014049W WO2016105059A8 WO 2016105059 A8 WO2016105059 A8 WO 2016105059A8 KR 2015014049 W KR2015014049 W KR 2015014049W WO 2016105059 A8 WO2016105059 A8 WO 2016105059A8
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- WIPO (PCT)
- Prior art keywords
- brittle crack
- production method
- method therefor
- strength steel
- crack arrestability
- Prior art date
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- 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
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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
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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
- C21D6/001—Heat treatment of ferrous alloys containing Ni
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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
- C21D6/005—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
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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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- 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
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- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
- C21D2211/002—Bainite
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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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- 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
- C21D2211/009—Pearlite
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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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
본 발명은 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법을 제공한다. 본 발명에 의하면, 중량 % 로, C: 0.05~0.1%, Mn: 0.9~1.5%, Ni: 0.8~1.5%, Nb: 0.005~0.1%, Ti: 0.005~0.1%, Cu: 0.1~0.6%, Si: 0.1~0.4%, P: 100ppm이하, S: 40ppm이하, 나머지 Fe 및 기타 불가피한 불순물을 포함하고; 페라이트 단상조직, 베이나이트 단상조직, 페라이트와 베이나이트의 복합조직, 페라이트와 퍼얼라이트의 복합조직, 및 페라이트, 베이나이트와 퍼얼라이트의 복합조직으로 이루어진 그룹으로부터 선택된 하나의 조직을 포함하는 미세조직을 갖고; 그리고 두께가 50mm이상인 취성균열전파 저항성이 우수한 구조용 극후물 강재 및 그 제조방법이 제공된다. 본 발명에 따르면, 높은 항복강도 및 우수한 취성균열전파 저항성이 우수한 고강도 강재를 얻을 수 있다.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/535,618 US10822671B2 (en) | 2014-12-24 | 2015-12-21 | High-strength steel having superior brittle crack arrestability, and production method therefor |
EP15873586.0A EP3239330B1 (en) | 2014-12-24 | 2015-12-21 | High-strength steel having superior brittle crack arrestability, and production method therefor |
CN201580070929.4A CN107109590A (zh) | 2014-12-24 | 2015-12-21 | 耐脆性裂纹扩展性优异的高强度钢材及其制造方法 |
JP2017531485A JP6475836B2 (ja) | 2014-12-24 | 2015-12-21 | 脆性亀裂伝播抵抗性に優れた高強度鋼材及びその製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2014-0189133 | 2014-12-24 | ||
KR20140189133 | 2014-12-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2016105059A1 WO2016105059A1 (ko) | 2016-06-30 |
WO2016105059A8 true WO2016105059A8 (ko) | 2016-11-24 |
Family
ID=56151005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2015/014049 WO2016105059A1 (ko) | 2014-12-24 | 2015-12-21 | 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US10822671B2 (ko) |
EP (1) | EP3239330B1 (ko) |
JP (1) | JP6475836B2 (ko) |
KR (1) | KR101747001B1 (ko) |
CN (1) | CN107109590A (ko) |
WO (1) | WO2016105059A1 (ko) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6788589B2 (ja) * | 2014-12-24 | 2020-11-25 | ポスコPosco | 脆性亀裂伝播抵抗性に優れた高強度鋼材及びその製造方法 |
WO2016105064A1 (ko) * | 2014-12-24 | 2016-06-30 | 주식회사 포스코 | 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법 |
KR101917455B1 (ko) | 2016-12-22 | 2018-11-09 | 주식회사 포스코 | 표면부 nrl-dwt 물성이 우수한 극후물 강재 및 그 제조방법 |
KR101917456B1 (ko) | 2016-12-22 | 2018-11-09 | 주식회사 포스코 | 표면부 nrl-dwt 물성이 우수한 극후물 강재 및 그 제조방법 |
CN109023137A (zh) * | 2018-09-04 | 2018-12-18 | 南京钢铁股份有限公司 | 一种脆性裂纹止裂性能优异的高强度钢板及其制造方法 |
KR102209561B1 (ko) * | 2018-11-30 | 2021-01-28 | 주식회사 포스코 | 취성균열전파 저항성이 우수한 극후물 강재 및 그 제조방법 |
KR102223119B1 (ko) * | 2018-12-19 | 2021-03-04 | 주식회사 포스코 | 극후 강판 제조방법 및 극후 강판용 주편 |
KR102209547B1 (ko) * | 2018-12-19 | 2021-01-28 | 주식회사 포스코 | 취성균열개시 저항성이 우수한 구조용 극후물 강재 및 그 제조방법 |
KR102237486B1 (ko) * | 2019-10-01 | 2021-04-08 | 주식회사 포스코 | 중심부 극저온 변형시효충격인성이 우수한 고강도 극후물 강재 및 그 제조방법 |
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JP6788589B2 (ja) | 2014-12-24 | 2020-11-25 | ポスコPosco | 脆性亀裂伝播抵抗性に優れた高強度鋼材及びその製造方法 |
JP3211046U (ja) | 2017-03-27 | 2017-06-22 | 株式会社丸十コーポレーション | レインウェア |
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2015
- 2015-12-21 JP JP2017531485A patent/JP6475836B2/ja active Active
- 2015-12-21 WO PCT/KR2015/014049 patent/WO2016105059A1/ko active Application Filing
- 2015-12-21 EP EP15873586.0A patent/EP3239330B1/en active Active
- 2015-12-21 CN CN201580070929.4A patent/CN107109590A/zh active Pending
- 2015-12-21 US US15/535,618 patent/US10822671B2/en active Active
- 2015-12-24 KR KR1020150186733A patent/KR101747001B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP3239330B1 (en) | 2020-12-02 |
US10822671B2 (en) | 2020-11-03 |
JP6475836B2 (ja) | 2019-02-27 |
US20170335424A1 (en) | 2017-11-23 |
EP3239330A1 (en) | 2017-11-01 |
CN107109590A (zh) | 2017-08-29 |
EP3239330A4 (en) | 2017-11-08 |
KR101747001B1 (ko) | 2017-06-15 |
JP2018504520A (ja) | 2018-02-15 |
WO2016105059A1 (ko) | 2016-06-30 |
KR20160078928A (ko) | 2016-07-05 |
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