EP3385401A4 - High-strength steel having excellent brittle crack arrestability and welding part brittle crack initiation resistance, and production method therefor - Google Patents
High-strength steel having excellent brittle crack arrestability and welding part brittle crack initiation resistance, and production method therefor Download PDFInfo
- Publication number
- EP3385401A4 EP3385401A4 EP16871071.3A EP16871071A EP3385401A4 EP 3385401 A4 EP3385401 A4 EP 3385401A4 EP 16871071 A EP16871071 A EP 16871071A EP 3385401 A4 EP3385401 A4 EP 3385401A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- brittle crack
- production method
- strength steel
- method therefor
- welding part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title 1
- 230000000977 initiatory effect Effects 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000010959 steel Substances 0.000 title 1
- 238000003466 welding Methods 0.000 title 1
Classifications
-
- 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
- C21D8/0205—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
- C21D8/0247—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
- C22C38/02—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
- C22C38/08—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
-
- 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)
- 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)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150172689A KR101726082B1 (en) | 2015-12-04 | 2015-12-04 | Steel having superior brittle crack arrestability and resistance brittle crack initiation of welding point and method for manufacturing the steel |
| PCT/KR2016/014088 WO2017095175A1 (en) | 2015-12-04 | 2016-12-02 | High-strength steel having excellent brittle crack arrestability and welding part brittle crack initiation resistance, and production method therefor |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3385401A4 true EP3385401A4 (en) | 2018-10-10 |
| EP3385401A1 EP3385401A1 (en) | 2018-10-10 |
| EP3385401B1 EP3385401B1 (en) | 2020-02-12 |
Family
ID=58580210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16871071.3A Active EP3385401B1 (en) | 2015-12-04 | 2016-12-02 | High-strength steel having excellent brittle crack arrestability and welding part brittle crack initiation resistance, and production method therefor |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20180363081A1 (en) |
| EP (1) | EP3385401B1 (en) |
| JP (1) | JP6648270B2 (en) |
| KR (1) | KR101726082B1 (en) |
| CN (1) | CN108368587B (en) |
| WO (1) | WO2017095175A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019069771A1 (en) * | 2017-10-03 | 2019-04-11 | 新日鐵住金株式会社 | Steel sheet and method for producing steel sheet |
| KR101999015B1 (en) | 2017-12-24 | 2019-07-10 | 주식회사 포스코 | Steel for structure having superior resistibility of brittle crack arrestability and manufacturing method thereof |
| KR102209561B1 (en) * | 2018-11-30 | 2021-01-28 | 주식회사 포스코 | Ultra thick steel excellent in brittle crack arrestability and manufacturing method for the same |
| PL3666911T3 (en) | 2018-12-11 | 2022-02-07 | Ssab Technology Ab | High-strength steel product and method of manufacturing the same |
| KR102200243B1 (en) * | 2018-12-18 | 2021-01-07 | 주식회사 포스코 | Offshore structural steel weldment for high heat input welding |
| KR102209547B1 (en) * | 2018-12-19 | 2021-01-28 | 주식회사 포스코 | Ultra thick structural steel having superior brittle crack initiation resistance and method of manufacturing the same |
| JP7398970B2 (en) * | 2019-04-22 | 2023-12-15 | 株式会社神戸製鋼所 | Thick steel plate and its manufacturing method |
| KR102255818B1 (en) * | 2019-06-24 | 2021-05-25 | 주식회사 포스코 | High strength steel for a structure having excellent corrosion resistance and manufacturing method for the same |
| KR102237486B1 (en) * | 2019-10-01 | 2021-04-08 | 주식회사 포스코 | High strength ultra thick steel plate having excellent very low temperature strain aging impact toughness at the center of thickness and method of manufacturing the same |
| KR102312510B1 (en) * | 2019-12-17 | 2021-10-14 | 주식회사 포스코 | Wire rod for cold head quality steel with excellent resistance to hydrogen delayed fracture, and method for manufacturing thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2660346A2 (en) * | 2010-12-28 | 2013-11-06 | Posco | High-strength steel sheet having superior toughness at cryogenic temperatures, and method for manufacturing same |
| KR20150112489A (en) * | 2014-03-28 | 2015-10-07 | 현대제철 주식회사 | Steel and method of manufacturing the same |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0674454B2 (en) * | 1986-08-19 | 1994-09-21 | 新日本製鐵株式会社 | Method for producing thick high-strength steel sheet with excellent low temperature toughness and weldability |
| US5470529A (en) * | 1994-03-08 | 1995-11-28 | Sumitomo Metal Industries, Ltd. | High tensile strength steel sheet having improved formability |
| JP3474661B2 (en) * | 1995-01-24 | 2003-12-08 | 新日本製鐵株式会社 | Sour-resistant steel plate with excellent crack arrestability |
| JPH10183241A (en) * | 1996-12-25 | 1998-07-14 | Nippon Steel Corp | Production of low yield ratio high tensile strength steel excellent in weldability and low temperature toughness |
| JP4445161B2 (en) * | 2001-06-19 | 2010-04-07 | 新日本製鐵株式会社 | Manufacturing method of thick steel plate with excellent fatigue strength |
| KR20090006987A (en) * | 2007-07-13 | 2009-01-16 | 삼성전자주식회사 | Ink jet image forming apparatus |
| KR100957964B1 (en) * | 2007-12-26 | 2010-05-17 | 주식회사 포스코 | Steel for a structure having excellent low temperature toughnetss, tensile strength and low yield ratio, of heat affected zone and manufacturing method for the same |
| JP5348386B2 (en) * | 2008-10-24 | 2013-11-20 | Ｊｆｅスチール株式会社 | Thick high-strength steel sheet with excellent low yield ratio and brittle crack resistance and its manufacturing method |
| KR20100067509A (en) * | 2008-12-11 | 2010-06-21 | 주식회사 포스코 | Method for producing steel plate for offshore structures having excellent ctod properties in heat affected zone |
| KR101360737B1 (en) * | 2009-12-28 | 2014-02-07 | 주식회사 포스코 | High strength steel plate having excellent resistance to brittle crack initiation and method for manufacturing the same |
| JP5522084B2 (en) * | 2011-02-24 | 2014-06-18 | 新日鐵住金株式会社 | Thick steel plate manufacturing method |
| KR20120097160A (en) * | 2011-02-24 | 2012-09-03 | 현대제철 주식회사 | High strength steel plate and method of manufacturing the same |
| JP5612532B2 (en) * | 2011-04-26 | 2014-10-22 | 株式会社神戸製鋼所 | Steel sheet excellent in low temperature toughness and weld joint fracture toughness and method for producing the same |
| CN102154587B (en) * | 2011-05-25 | 2013-08-07 | 莱芜钢铁集团有限公司 | Pipe line steel for high linear energy welding and manufacturing method thereof |
| CN102851591B (en) * | 2011-06-28 | 2016-01-13 | 鞍钢股份有限公司 | A kind of high-strength and high-ductility low-temperature steel peculiar to vessel and manufacture method thereof |
| KR101681491B1 (en) * | 2011-12-27 | 2016-12-01 | 제이에프이 스틸 가부시키가이샤 | High strength steel plate having excellent brittle crack arrestability |
| CN104789898A (en) * | 2015-05-07 | 2015-07-22 | 湖南华菱湘潭钢铁有限公司 | Production method of ultrahigh-strength anti-cracking thick steel plate |
-
2015
- 2015-12-04 KR KR1020150172689A patent/KR101726082B1/en active IP Right Grant
-
2016
- 2016-12-02 WO PCT/KR2016/014088 patent/WO2017095175A1/en active Application Filing
- 2016-12-02 JP JP2018522789A patent/JP6648270B2/en active Active
- 2016-12-02 EP EP16871071.3A patent/EP3385401B1/en active Active
- 2016-12-02 US US15/780,175 patent/US20180363081A1/en not_active Abandoned
- 2016-12-02 CN CN201680070390.7A patent/CN108368587B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2660346A2 (en) * | 2010-12-28 | 2013-11-06 | Posco | High-strength steel sheet having superior toughness at cryogenic temperatures, and method for manufacturing same |
| KR20150112489A (en) * | 2014-03-28 | 2015-10-07 | 현대제철 주식회사 | Steel and method of manufacturing the same |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2017095175A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108368587A (en) | 2018-08-03 |
| KR101726082B1 (en) | 2017-04-12 |
| JP2019502018A (en) | 2019-01-24 |
| US20180363081A1 (en) | 2018-12-20 |
| CN108368587B (en) | 2020-05-26 |
| JP6648270B2 (en) | 2020-02-14 |
| WO2017095175A1 (en) | 2017-06-08 |
| EP3385401A1 (en) | 2018-10-10 |
| EP3385401B1 (en) | 2020-02-12 |
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