MA49657B1 - Procédé pour la production d'une tôle d'acier à haute résistance ayant une ductilité et une aptitude au formage améliorées et tôle d'acier ainsi obtenue - Google Patents
Procédé pour la production d'une tôle d'acier à haute résistance ayant une ductilité et une aptitude au formage améliorées et tôle d'acier ainsi obtenueInfo
- Publication number
- MA49657B1 MA49657B1 MA49657A MA49657A MA49657B1 MA 49657 B1 MA49657 B1 MA 49657B1 MA 49657 A MA49657 A MA 49657A MA 49657 A MA49657 A MA 49657A MA 49657 B1 MA49657 B1 MA 49657B1
- Authority
- MA
- Morocco
- Prior art keywords
- steel sheet
- temperature
- sheet
- partitioning
- producing
- Prior art date
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
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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
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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
- C21D6/002—Heat treatment of ferrous alloys containing Cr
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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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
-
- 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys 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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- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
-
- 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
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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
- C22C38/06—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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- 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
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
-
- 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
- C21D2211/005—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
- C21D2211/008—Martensite
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)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Procédé de production d'une tôle d'acier, le procédé comprenant les étapes successives suivantes :- fournir une tôle d'acier laminée à froid, la composition chimique de l'acier contenant en poids % : 0,15 % = c = 0,23 %, 1,4 % = mn = 2,6 %, 0,6% si = 1,5%, 0,02% = al = 1,0%, avec 1,0% = si+al = 2,0%, 0 = nb 0,035%, 0 = mo = 0,3%, 0 = cr = 0,3%, le reste étant du fe et des impuretés inévitables,- recuit de la tôle d'acier à une température de recuit ta comprise entre ac1 et ac3 de manière à obtenir une structure comprenant au moins 40 % d'austénite et au moins 40 % de ferrite intercritique,- trempe de la tôle de une température d'au moins 600°c à une vitesse de refroidissement d'au moins 20°c/s jusqu'à une température de trempe qt comprise entre 180°c et 260°c,- chauffer la tôle jusqu'à une température de partage pt comprise entre 375°c et 470°c et en maintenant la tôle à cette température de partitionnement pt pendant un temps de partitionnement pt compris entre 25s et 440s, le temps de partitionnement pt étant compris entre 1 00s et 440s si la température de partitionnement pt est comprise entre 375°c et 400°c, et comprise entre 25s et 150s si la température de partitionnement pt est comprise entre 450°c et 470°c,- refroidissement de la tôle jusqu'à la température ambiante ,la tôle d'acier ayant une microstructure finale constituée, en fraction surfacique, de :- au moins 11 % de martensite revenu,- entre 10 % et 20 % d'austénite retenue,- entre 40 % et 60 % de ferrite,- au plus 6 % de martensite fraîche,- au maximum 18% de bainite.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2015/059839 WO2017109540A1 (fr) | 2015-12-21 | 2015-12-21 | Procédé de fabrication d'une tôle d'acier à haute résistance ayant une ductilité et une aptitude au formage améliorées et tôle d'acier ainsi obtenue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MA49657A MA49657A (fr) | 2021-05-12 |
| MA49657B1 true MA49657B1 (fr) | 2021-10-29 |
Family
ID=55221458
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MA54718A MA54718B1 (fr) | 2015-12-21 | 2016-12-20 | Procédé pour la production d'une tôle d'acier à haute résistance ayant une ductilité et une aptitude au formage améliorées et tôle d'acier ainsi obtenue |
| MA44120A MA44120B1 (fr) | 2015-12-21 | 2016-12-20 | Procédé pour la production d'une tôle d'acier à haute résistance ayant une ductilité et une aptitude au formage améliorées et tôle d'acier ainsi obtenue |
| MA49657A MA49657B1 (fr) | 2015-12-21 | 2016-12-20 | Procédé pour la production d'une tôle d'acier à haute résistance ayant une ductilité et une aptitude au formage améliorées et tôle d'acier ainsi obtenue |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MA54718A MA54718B1 (fr) | 2015-12-21 | 2016-12-20 | Procédé pour la production d'une tôle d'acier à haute résistance ayant une ductilité et une aptitude au formage améliorées et tôle d'acier ainsi obtenue |
| MA44120A MA44120B1 (fr) | 2015-12-21 | 2016-12-20 | Procédé pour la production d'une tôle d'acier à haute résistance ayant une ductilité et une aptitude au formage améliorées et tôle d'acier ainsi obtenue |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US12054799B2 (fr) |
| EP (3) | EP3394300B1 (fr) |
| JP (1) | JP6815414B2 (fr) |
| KR (1) | KR102618088B1 (fr) |
| CN (1) | CN108474057B (fr) |
| BR (1) | BR112018012133B1 (fr) |
| CA (1) | CA3008062C (fr) |
| ES (3) | ES2889754T3 (fr) |
| FI (1) | FI3910084T3 (fr) |
| HU (3) | HUE071743T2 (fr) |
| MA (3) | MA54718B1 (fr) |
| MX (1) | MX2018007646A (fr) |
| PL (3) | PL3656880T3 (fr) |
| RU (1) | RU2728369C2 (fr) |
| UA (1) | UA122878C2 (fr) |
| WO (2) | WO2017109540A1 (fr) |
| ZA (1) | ZA201803916B (fr) |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102239640B1 (ko) * | 2016-08-31 | 2021-04-12 | 제이에프이 스틸 가부시키가이샤 | 고강도 강판 및 그의 제조 방법 |
| DE102017127496A1 (de) * | 2017-11-21 | 2019-05-23 | Sms Group Gmbh | Verfahren zur Herstellung von Q&P-Stahl mittels ionischer Flüssigkeiten |
| KR102400451B1 (ko) * | 2017-11-29 | 2022-05-19 | 제이에프이 스틸 가부시키가이샤 | 고강도 냉연 강판 및 그의 제조 방법 |
| KR102433938B1 (ko) * | 2018-01-31 | 2022-08-19 | 제이에프이 스틸 가부시키가이샤 | 고강도 냉연강판, 고강도 도금강판 및 그것들의 제조방법 |
| CN108193138B (zh) * | 2018-02-12 | 2019-12-24 | 唐山钢铁集团有限责任公司 | 980MPa级汽车用冷轧高强Q&P钢及其生产方法 |
| CZ2018230A3 (cs) * | 2018-05-18 | 2019-11-13 | Univerzita J. E. Purkyně V Ústí Nad Labem | Způsob zušlechťování nízkouhlíkových bórových ocelí |
| CN111868282B (zh) * | 2018-07-18 | 2021-12-31 | 日本制铁株式会社 | 钢板 |
| WO2020058748A1 (fr) * | 2018-09-20 | 2020-03-26 | Arcelormittal | Tôle d'acier laminée à froid et revêtue et son procédé de fabrication |
| WO2020065381A1 (fr) | 2018-09-28 | 2020-04-02 | Arcelormittal | Tôle d'acier laminée à chaud et son procédé de fabrication |
| SE542893C2 (en) * | 2018-11-30 | 2020-08-18 | Voestalpine Stahl Gmbh | A resistance spot welded joint comprising a zinc coated ahss steel sheet |
| ES2929345T3 (es) | 2019-02-18 | 2022-11-28 | Tata Steel Ijmuiden Bv | Acero de alta resistencia con propiedades mecánicas mejoradas |
| CN109988970B (zh) * | 2019-04-01 | 2021-08-31 | 山东钢铁集团日照有限公司 | 一种具有不同屈强比的冷轧q&p980钢及其生产方法 |
| CN111843151B (zh) * | 2019-04-30 | 2021-08-17 | 宝山钢铁股份有限公司 | 一种提高中锰钢电阻点焊接头性能的方法 |
| CN113825846B (zh) * | 2019-05-07 | 2024-08-23 | 美国钢铁公司 | 生产连续铸造热轧高强度钢片产品的方法 |
| WO2020245627A1 (fr) | 2019-06-03 | 2020-12-10 | Arcelormittal | Tôle d'acier laminée à froid et revêtue et son procédé de fabrication |
| US12435384B2 (en) | 2019-07-30 | 2025-10-07 | Jfe Steel Corporation | High-strength steel sheet and method for manufacturing same |
| WO2022018499A1 (fr) * | 2020-07-24 | 2022-01-27 | Arcelormittal | Tôle en acier laminée à froid et recuite |
| WO2022102218A1 (fr) * | 2020-11-11 | 2022-05-19 | 日本製鉄株式会社 | Tôle d'acier et procédé pour sa production |
| CA3201950A1 (fr) * | 2020-12-08 | 2022-06-16 | Arcelormittal | Tole d'acier laminee a froid et traitee thermiquement et son procede de fabrication |
| SE545210C2 (en) * | 2020-12-23 | 2023-05-23 | Voestalpine Stahl Gmbh | Coiling temperature influenced cold rolled strip or steel |
| CN112725698B (zh) * | 2020-12-28 | 2021-12-07 | 郑州航空工业管理学院 | 一种多尺度结构块体材料及其制备方法和应用 |
| DE102021107330A1 (de) * | 2021-03-24 | 2022-09-29 | Thyssenkrupp Steel Europe Ag | Beschichtetes Stahlflachprodukt und Verfahren zu seiner Herstellung |
| CN115505834A (zh) * | 2021-06-07 | 2022-12-23 | 宝山钢铁股份有限公司 | 一种热镀锌钢板及其制造方法 |
| CN113549744B (zh) * | 2021-06-30 | 2022-11-15 | 邯郸钢铁集团有限责任公司 | 一种高硅铝成分钢板生产方法 |
| SE545181C2 (en) * | 2021-07-20 | 2023-05-02 | Voestalpine Stahl Gmbh | High strength cold rolled steel strip sheet for automotive use having good withstandability to retained austentite decomposition |
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2015
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