EP2327810A1 - Feuille d'acier de résistance élevée et son procédé de fabrication - Google Patents
Feuille d'acier de résistance élevée et son procédé de fabrication Download PDFInfo
- Publication number
- EP2327810A1 EP2327810A1 EP09813166A EP09813166A EP2327810A1 EP 2327810 A1 EP2327810 A1 EP 2327810A1 EP 09813166 A EP09813166 A EP 09813166A EP 09813166 A EP09813166 A EP 09813166A EP 2327810 A1 EP2327810 A1 EP 2327810A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- less
- steel sheet
- amount
- high strength
- microstructure
- 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 claims abstract description 170
- 239000010959 steel Substances 0.000 title claims abstract description 170
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 82
- 229910001563 bainite Inorganic materials 0.000 claims abstract description 76
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 65
- 230000000717 retained effect Effects 0.000 claims abstract description 60
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 29
- 229910001568 polygonal ferrite Inorganic materials 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 40
- 238000011282 treatment Methods 0.000 claims description 37
- 238000000137 annealing Methods 0.000 claims description 23
- 238000005246 galvanizing Methods 0.000 claims description 19
- 238000005244 galvannealing Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 239000010960 cold rolled steel Substances 0.000 claims description 13
- 238000005098 hot rolling Methods 0.000 claims description 7
- 238000005097 cold rolling Methods 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- 150000001247 metal acetylides Chemical class 0.000 description 23
- 230000000694 effects Effects 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 20
- 230000009466 transformation Effects 0.000 description 14
- 238000005275 alloying Methods 0.000 description 13
- 230000006866 deterioration Effects 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000009467 reduction Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000007747 plating Methods 0.000 description 7
- 238000005728 strengthening Methods 0.000 description 7
- 238000002441 X-ray diffraction Methods 0.000 description 6
- 229910001562 pearlite Inorganic materials 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 5
- 229910052720 vanadium Inorganic materials 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- 241000219307 Atriplex rosea Species 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910000794 TRIP steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
-
- 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
- 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
- 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
- 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
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
-
- 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
- C22C38/002—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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- 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
- C21D2211/002—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
- C21D2211/008—Martensite
Definitions
- the high strength steel sheet according to the above-described item 1 or item 2 characterized in that the above-described steel sheet further contains at least one type of element selected from, on a percent by mass basis, Ti: 0.01% or more, and 0.1% or less and Nb: 0.01% or more, and 0.1% or less.
- the present invention will be specifically described below. Initially, the reason for limitation of the steel sheet microstructure in such a way that described above in the present invention will be described.
- the area percentage refers to an area percentage relative to the whole steel sheet microstructure.
- the tensile strength becomes 980 MPa or more, but the stretch-flangeability is poor.
- the as-quenched martensite is very hard, and the deformability of the as-quenched martensite in itself is very low. Therefore, the workability, especially stretch-flangeability, of the steel sheet deteriorates significantly. Furthermore, since the difference in hardness between the as-quenched martensite and the upper bainite is significantly large, if the amount of as-quenched martensite is large, the interface between the as-quenched martensite and the upper bainite increases.
- Average amount of C in retained austenite 0.70% or more
- the element Al is an element useful for strengthening steel and, in addition, is a useful element, which is added as a deoxidizing agent in a steel making process. If the amount of Al exceeds 3.0%, inclusion in a steel sheet increases and the elongation deteriorates. Therefore, the amount of Al is specified to be 3.0% or less. The amount is preferably 2.0% or less. Moreover, Al is an element useful for suppressing generation of carbides and facilitating generation of retained austenite. Furthermore, it is preferable that the amount of Al is specified to be 0.001% or more in order to obtain a deoxidation effect, and more preferably 0.005% or more. In this regard, the amount of Al in the present invention is the amount of Al contained in the steel sheet after deoxidation.
- the elements Ca and REM are useful for spheroidizing the shape of sulfides and improve the adverse effect of sulfides on the stretch-flangeability. The effects thereof are obtained when individual contents are 0.001% or more. On the other hand, if the individual contents exceed 0.005%, increases of inclusion and the like are invited so as to cause surface defects, internal defects, and the like. Therefore, in the case where Ca and REM are contained, the ranges are specified to be Ca: 0.001% or more, and 0.005% or less and REM: 0.001% or more, and 0.005% or less.
- the annealing temperature exceeds 1,000°C, growth of austenite grains is significant, coarser configuration phases are generated by downstream cooling, and the tenacity and the like deteriorate.
- the annealing temperature is lower than A 3 point (austenite transformation point)
- polygonal ferrite has already been generated in an annealing stage, and it becomes necessary that a temperature range of 500°C or more is cooled very rapidly in order to suppress growth of polygonal ferrite during cooling. Therefore, it is necessary that the annealing temperature is specified to be the A 3 point or higher, and preferably, 1,000°C or lower.
- the method for manufacturing a high strength steel sheet according to the present invention can include that the high strength steel sheet is produced following the above-described manufacturing method according to the present invention, where steps up to the heat treatment have been completed, and thereafter, the galvanizing treatment or, furthermore, the galvannealing treatment is conducted. Alternatively, after the keeping in the second temperature range following the manufacturing method according to the present invention, the galvanizing treatment or the galvannealing treatment can be conducted succeedingly.
- the steel sheet was ground-polished up to one-quarter of a sheet thickness in the sheet thickness direction and the amount of retained austenite was determined by X-ray diffractometry.
- Co-K ⁇ was used and the amount of retained austenite were calculated from the average value of the intensity ratio of each of (200), (220), and (311) faces of austenite to the diffraction intensity of each of (200), (211), and (220) faces of ferrite.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008232437A JP5365112B2 (ja) | 2008-09-10 | 2008-09-10 | 高強度鋼板およびその製造方法 |
PCT/JP2009/065981 WO2010030021A1 (fr) | 2008-09-10 | 2009-09-08 | Feuille d'acier de résistance élevée et son procédé de fabrication |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2327810A1 true EP2327810A1 (fr) | 2011-06-01 |
EP2327810A4 EP2327810A4 (fr) | 2013-11-20 |
EP2327810B1 EP2327810B1 (fr) | 2019-02-27 |
Family
ID=42005270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09813166.7A Active EP2327810B1 (fr) | 2008-09-10 | 2009-09-08 | Feuille d'acier de résistance élevée et son procédé de fabrication |
Country Status (8)
Country | Link |
---|---|
US (1) | US20110162762A1 (fr) |
EP (1) | EP2327810B1 (fr) |
JP (1) | JP5365112B2 (fr) |
KR (1) | KR101341731B1 (fr) |
CN (1) | CN102149841B (fr) |
CA (1) | CA2734978C (fr) |
TW (1) | TWI412609B (fr) |
WO (1) | WO2010030021A1 (fr) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2491958A (en) * | 2011-06-13 | 2012-12-19 | Kobe Steel Ltd | Steel sheet with a tensile strength of at least 1180 MPa |
EP2690184A1 (fr) * | 2012-07-27 | 2014-01-29 | ThyssenKrupp Steel Europe AG | Cold rolled steel flat product and method for its production |
EP2824210A4 (fr) * | 2012-03-07 | 2015-04-29 | Jfe Steel Corp | Feuille d'acier laminée à froid à résistance élevée et son procédé de fabrication |
US20150165727A1 (en) * | 2012-01-23 | 2015-06-18 | Jfe Steel Corporation | Galvannealed steel sheet |
EP2821517A4 (fr) * | 2012-02-29 | 2015-11-04 | Kobe Steel Ltd | Feuille d'acier à haute résistance ayant une excellente aptitude au formage à chaud et son procédé de fabrication |
WO2016001705A1 (fr) * | 2014-07-03 | 2016-01-07 | Arcelormittal | Procédé de fabrication d'une tôle d'acier à haute résistance présentant une aptitude au formage et une ductilité améliorées, et tôle ainsi obtenue |
WO2016187577A1 (fr) * | 2015-05-21 | 2016-11-24 | Ak Steel Properties, Inc. | Aciers haute résistance améliorés de troisième génération à teneur élevée en manganèse |
US10106874B2 (en) | 2012-03-30 | 2018-10-23 | Voestalpine Stahl Gmbh | High strength cold rolled steel sheet |
EP3309273A4 (fr) * | 2015-06-11 | 2018-12-26 | Nippon Steel & Sumitomo Metal Corporation | Tôle d'acier recuite par galvanisation et procédé permettant de fabriquer cette dernière |
US10260133B2 (en) | 2013-03-28 | 2019-04-16 | Jfe Steel Corporation | High-strength steel sheet and method for producing the same |
US10301700B2 (en) | 2013-08-22 | 2019-05-28 | Thyssenkrupp Steel Europe Ag | Method for producing a steel component |
WO2019154819A1 (fr) | 2018-02-07 | 2019-08-15 | Tata Steel Nederland Technology B.V. | Acier haute résistance laminé à chaud ou laminé à froid et recuit et son procédé de production |
WO2020151855A1 (fr) * | 2019-01-22 | 2020-07-30 | Voestalpine Stahl Gmbh | Tôle d'acier laminée à froid |
US10844455B2 (en) | 2014-07-03 | 2020-11-24 | Arcelormittal | Method for manufacturing a high strength steel sheet and sheet obtained by the method |
US11739392B2 (en) | 2016-02-10 | 2023-08-29 | Jfe Steel Corporation | High-strength steel sheet and method for manufacturing the same |
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JP5333298B2 (ja) * | 2010-03-09 | 2013-11-06 | Jfeスチール株式会社 | 高強度鋼板の製造方法 |
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EP2942416B1 (fr) | 2011-03-31 | 2017-06-07 | Kabushiki Kaisha Kobe Seiko Sho | Feuille d'acier à haute résistance avec une excellente aptitude au façonnage et son procédé de fabrication |
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JP6228741B2 (ja) * | 2012-03-27 | 2017-11-08 | 株式会社神戸製鋼所 | 板幅方向における中央部と端部の強度差が少なく、曲げ加工性に優れた高強度溶融亜鉛めっき鋼板、高強度合金化溶融亜鉛めっき鋼板、およびこれらの製造方法 |
JP5764549B2 (ja) | 2012-03-29 | 2015-08-19 | 株式会社神戸製鋼所 | 成形性および形状凍結性に優れた、高強度冷延鋼板、高強度溶融亜鉛めっき鋼板および高強度合金化溶融亜鉛めっき鋼板、ならびにそれらの製造方法 |
JP5966598B2 (ja) * | 2012-05-17 | 2016-08-10 | Jfeスチール株式会社 | 加工性に優れる高降伏比高強度冷延鋼板およびその製造方法 |
KR101412262B1 (ko) * | 2012-06-19 | 2014-06-27 | 현대제철 주식회사 | 굽힘성과 성형성이 우수한 자동차용 고강도 냉연강판 제조 방법 |
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- 2009-09-08 CA CA2734978A patent/CA2734978C/fr not_active Expired - Fee Related
- 2009-09-08 WO PCT/JP2009/065981 patent/WO2010030021A1/fr active Application Filing
- 2009-09-08 EP EP09813166.7A patent/EP2327810B1/fr active Active
- 2009-09-08 US US13/062,574 patent/US20110162762A1/en not_active Abandoned
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GB2491958A (en) * | 2011-06-13 | 2012-12-19 | Kobe Steel Ltd | Steel sheet with a tensile strength of at least 1180 MPa |
US9745639B2 (en) | 2011-06-13 | 2017-08-29 | Kobe Steel, Ltd. | High-strength steel sheet excellent in workability and cold brittleness resistance, and manufacturing method thereof |
US20150165727A1 (en) * | 2012-01-23 | 2015-06-18 | Jfe Steel Corporation | Galvannealed steel sheet |
US9821534B2 (en) * | 2012-01-23 | 2017-11-21 | Jfe Steel Corporation | Galvannealed steel sheet |
EP2821517A4 (fr) * | 2012-02-29 | 2015-11-04 | Kobe Steel Ltd | Feuille d'acier à haute résistance ayant une excellente aptitude au formage à chaud et son procédé de fabrication |
EP2824210A4 (fr) * | 2012-03-07 | 2015-04-29 | Jfe Steel Corp | Feuille d'acier laminée à froid à résistance élevée et son procédé de fabrication |
US9631250B2 (en) | 2012-03-07 | 2017-04-25 | Jfe Steel Corporation | High-strength cold-rolled steel sheet and method for manufacturing the same |
US10106874B2 (en) | 2012-03-30 | 2018-10-23 | Voestalpine Stahl Gmbh | High strength cold rolled steel sheet |
EP2690184A1 (fr) * | 2012-07-27 | 2014-01-29 | ThyssenKrupp Steel Europe AG | Cold rolled steel flat product and method for its production |
WO2014016421A1 (fr) * | 2012-07-27 | 2014-01-30 | Thyssenkrupp Steel Europe Ag | Produit plat en acier laminé à froid et son procédé de fabrication |
US10260133B2 (en) | 2013-03-28 | 2019-04-16 | Jfe Steel Corporation | High-strength steel sheet and method for producing the same |
US10301700B2 (en) | 2013-08-22 | 2019-05-28 | Thyssenkrupp Steel Europe Ag | Method for producing a steel component |
WO2016001705A1 (fr) * | 2014-07-03 | 2016-01-07 | Arcelormittal | Procédé de fabrication d'une tôle d'acier à haute résistance présentant une aptitude au formage et une ductilité améliorées, et tôle ainsi obtenue |
US10472692B2 (en) | 2014-07-03 | 2019-11-12 | Arcelormittal | Method for manufacturing a high strength steel sheet having improved formability and ductility and sheet obtained |
RU2680043C2 (ru) * | 2014-07-03 | 2019-02-14 | Арселормиттал | Способ изготовления высокопрочного стального листа, обладающего улучшенной формуемостью и пластичностью, и полученный лист |
US11692235B2 (en) | 2014-07-03 | 2023-07-04 | Arcelormittal | Method for manufacturing a high-strength steel sheet and sheet obtained by the method |
WO2016001892A3 (fr) * | 2014-07-03 | 2016-03-17 | Arcelormittal | Procédé de fabrication d'une tôle d'acier à haute résistance présentant une aptitude au façonnage et une ductilité améliorées et tôle obtenue |
US10844455B2 (en) | 2014-07-03 | 2020-11-24 | Arcelormittal | Method for manufacturing a high strength steel sheet and sheet obtained by the method |
US11136656B2 (en) | 2015-05-21 | 2021-10-05 | Cleveland-Cliffs Steel Properties Inc. | High manganese 3rd generation advanced high strength steels |
WO2016187577A1 (fr) * | 2015-05-21 | 2016-11-24 | Ak Steel Properties, Inc. | Aciers haute résistance améliorés de troisième génération à teneur élevée en manganèse |
US10745775B2 (en) | 2015-06-11 | 2020-08-18 | Nippon Steel Corporation | Galvannealed steel sheet and method for producing the same |
EP3309273A4 (fr) * | 2015-06-11 | 2018-12-26 | Nippon Steel & Sumitomo Metal Corporation | Tôle d'acier recuite par galvanisation et procédé permettant de fabriquer cette dernière |
US11739392B2 (en) | 2016-02-10 | 2023-08-29 | Jfe Steel Corporation | High-strength steel sheet and method for manufacturing the same |
WO2019154819A1 (fr) | 2018-02-07 | 2019-08-15 | Tata Steel Nederland Technology B.V. | Acier haute résistance laminé à chaud ou laminé à froid et recuit et son procédé de production |
US11884990B2 (en) | 2018-02-07 | 2024-01-30 | Tata Steel Nederland Technology B.V. | High strength hot rolled or cold rolled and annealed steel and method of producing it |
WO2020151855A1 (fr) * | 2019-01-22 | 2020-07-30 | Voestalpine Stahl Gmbh | Tôle d'acier laminée à froid |
Also Published As
Publication number | Publication date |
---|---|
WO2010030021A1 (fr) | 2010-03-18 |
KR101341731B1 (ko) | 2013-12-16 |
CA2734978C (fr) | 2016-03-29 |
TWI412609B (zh) | 2013-10-21 |
CN102149841B (zh) | 2013-11-20 |
JP2010065273A (ja) | 2010-03-25 |
JP5365112B2 (ja) | 2013-12-11 |
EP2327810B1 (fr) | 2019-02-27 |
CN102149841A (zh) | 2011-08-10 |
TW201020329A (en) | 2010-06-01 |
EP2327810A4 (fr) | 2013-11-20 |
CA2734978A1 (fr) | 2010-03-18 |
US20110162762A1 (en) | 2011-07-07 |
KR20110042369A (ko) | 2011-04-26 |
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