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EP2905348B1 - Hochfestes Stahlflachprodukt mit bainitisch-martensitischem Gefüge und Verfahren zur Herstellung eines solchen Stahlflachprodukts - Google Patents

Hochfestes Stahlflachprodukt mit bainitisch-martensitischem Gefüge und Verfahren zur Herstellung eines solchen Stahlflachprodukts Download PDF

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Publication number
EP2905348B1
EP2905348B1 EP14154354.6A EP14154354A EP2905348B1 EP 2905348 B1 EP2905348 B1 EP 2905348B1 EP 14154354 A EP14154354 A EP 14154354A EP 2905348 B1 EP2905348 B1 EP 2905348B1
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EP
European Patent Office
Prior art keywords
weight
content
denotes
rolling
flat steel
Prior art date
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EP14154354.6A
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German (de)
English (en)
French (fr)
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EP2905348A1 (de
Inventor
Prof. Dr.-Ing. Andreas Kern
Elena Schaffnit
Hans-Joachim Tschersich
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ThyssenKrupp Steel Europe AG
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ThyssenKrupp Steel Europe AG
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Priority to EP14154354.6A priority Critical patent/EP2905348B1/de
Application filed by ThyssenKrupp Steel Europe AG filed Critical ThyssenKrupp Steel Europe AG
Priority to AU2015215080A priority patent/AU2015215080B2/en
Priority to RU2016135949A priority patent/RU2675191C2/ru
Priority to US15/116,958 priority patent/US10724113B2/en
Priority to PCT/EP2015/052135 priority patent/WO2015117934A1/de
Priority to BR112016016949-2A priority patent/BR112016016949B1/pt
Priority to MX2016009530A priority patent/MX2016009530A/es
Priority to CA2936733A priority patent/CA2936733C/en
Publication of EP2905348A1 publication Critical patent/EP2905348A1/de
Application granted granted Critical
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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
    • 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
    • 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
    • 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
    • C21D6/005—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
    • C21D8/0221—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
    • C21D8/0247—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
    • 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
    • C22C38/02—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
    • C22C38/18—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
    • C22C38/22—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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • 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 invention relates to a high-strength steel flat product with a ferrite-free structure, which consists for the most part of martensite and bainite, wherein in the microstructure in addition small amounts of retained austenite may be present.
  • the invention relates to a method for producing a flat steel product according to the invention.
  • Flat steel products of the type in question are typically rolled products, such as steel strips or sheets, as well as blanks and blanks made therefrom.
  • High-strength strip sheets are becoming increasingly important, as not only technical performance, but also resource efficiency and climate protection play an important role today play.
  • the reduction of the dead weight of a steel structure can be achieved by increasing the strength properties.
  • high-strength steel strips and sheets have to meet high demands on toughness properties and brittle fracture resistance, behavior in cold forming, and weldability.
  • From the EP 1 669 470 A1 is a hot rolled steel sheet having a steel composition comprising (in wt%) 0.01-0.2 wt% C, 0.01-2% Si, 0.1-2% Mn, up to 0, 1% P, up to 0.03% S, 0.001-0.1% Al, up to 0.01% N and the remainder being Fe and unavoidable impurities.
  • the flat steel product has a substantially homogeneous and continuously cooled microstructure with an average particle size of 8 .mu.m to 30 .mu.m . To achieve this, a slab of the above composition is pre-rolled.
  • the obtained pre-rolled slab is then hot rolled to a hot strip at a hot rolling end temperature of at least 50 ° C above the Ar3 temperature of the steel. Subsequently, the finished hot-rolled hot strip is cooled after a break of at least 0.5 seconds at a cooling rate of at least 80 ° C / sec of the Ar3 temperature to a less than 500 ° C amounting coiler temperature and finally wound into a coil.
  • WO 03/031669 A1 Furthermore, a high-strength thin steel sheet is known, which is deep drawable and thereby has an excellent dimensional stability. Moreover, this publication describes a method for producing such a flat steel product.
  • the steel sheet in question is characterized by a certain ratio of the X-ray intensities of certain crystallographic orientations and has a certain roughness Ra and a certain friction coefficient of the steel sheet surface at up to 200 ° C and has a lubricant effect.
  • a suitably assembled hot strip is produced by hot rolling at a total reduction ratio of at least 25% at a temperature which is in a range between the Ar3 temperature and the Ar3 temperature + 100 ° C. All flat steel products produced by this process contain ferrite in the microstructure.
  • a steel sheet consisting of a high-strength, low-alloy steel, which (in wt .-%) of C: 0.08 - 0.20%; Si: 0.10-0.60%; Mn: 1.00-2.00%; B: 0.0005 - 0.0040%; Cr: up to 1.50%; Mo: up to 0.80%; Ni: up to 1.50%; Nb: up to 0.080%; V: up to 0.080%; Ti: up to 0.060%; Al: 0.010-0.080%, Ca: 0.0010-0.0080%, N: up to 0.0080%, O: up to 0.0080%, H: up to 0.0004%, P: up to 0.015 %, S: up to 0.010%, remainder iron and unavoidable impurities, wherein for the Cr, Mn and B content 0.20 ⁇ (Cr / 5 + Mn / 6 + 50B) ⁇ 0.55%, for Mo, Ni and Nb
  • the composite steel sheets have a structure consisting of fine martensite, which may contain up to 5% by volume of retained austenite as the only other constituent of the structure.
  • the sheets produced in this way have thicknesses of at least 16 mm and are suitable for applications in which they are exposed to high wear loads.
  • the object of the invention was to provide a flat steel product which can be produced with reduced expenditure and not only has optimum mechanical properties, such as high strength and at the same time good toughness, but also one has good weldability.
  • the solution according to the invention of the above-stated object is that during the production of flat steel products according to the invention, the working steps enumerated in claim 5 are run through.
  • a flat steel product according to the invention has a bainitic-martensitic structure in the hot-rolled state, which does not have ferrite, but consists of at least 95% by volume of martensite and bainite with a martensite content of at least 5% by volume.
  • a total of up to 5% by volume of retained austenite and production-related unavoidable microstructural constituents are permitted.
  • a flat steel product according to the invention contains 0.08-0.10% C, 0.015-0.5% Si, 1.20-2.00% Mn, 0.020-0.040% Al , 0.30-1.00% Cr, 0.20-0.30% Mo, 0.020-0.030% Nb, 0.0015-0.0025% B, up to 0.025% P, up to 0.010% S, to to 0.006% N, especially 0.001-0.006% N.
  • Contaminants include up to 0.12% Cu, up to 0.090% Ni, up to 0.0030% Ti, up to 0.009% V, up to 0.0090% Co, up to 0.004% Sb and up to 0.0009% W.
  • a flat steel product according to the invention when hot-rolled, has a minimum yield strength of 900 MPa with simultaneously good elongation at break.
  • the yield strengths of flat steel products according to the invention are in the range of 900-1200 MPa.
  • the elongation at break is typically at least 8% and the tensile strength is typically 950 - 1300 MPa.
  • the notch impact work at -20 ° C is also typically in the range of 65-115 J. At -40 ° C, the notch impact work on flat steel products according to the invention is typically 40-120 years.
  • An essential advantage of the invention over the known prior art is that a Steel flat product according to the invention which achieves high strength and good toughness in the hot rolling state without additional heat treatment.
  • steel according to the invention has a structure of bainite and at least 5% by volume of martensite, but has no ferrite.
  • the Martensitanteil in the structure of the steel according to the invention contributes significantly to its strength.
  • the microstructure of the flat steel product according to the invention is fine-grained and thus ensures good elongation at break and toughness.
  • the average grain size of the structure is a maximum of 20 ⁇ m.
  • Copper, nickel, titanium, vanadium, cobalt, tungsten, antimony are the steel from which a flat steel product according to the invention consists, not selectively alloyed, but occur as production-related unavoidable accompanying elements.
  • the Cu content is limited to 0.12 wt% in order to avoid adverse effects on weldability and toughness in the heat affected zone of a weld made on the flat steel product.
  • the other production-related unavoidable existing, above-mentioned alloy components are likewise to be limited in their contents in such a way that in each case they have no influence on the properties of the flat steel product according to the invention.
  • W meets the condition: CE ⁇ W ⁇ 0.5
  • the rough-rolling temperature is in the temperature range from 950 ° C to 1250 ° C.
  • the lower limit of the roughing temperature range and the minimum value of the sum of the number of passes obtained by roughing are set so that the recrystallization processes can still be completed. This results in a fine-grained austenite before finish rolling, which has a positive effect on the toughness properties and elongation at break.
  • the final rolling temperature of the hot rolling carried out in a rolling scale usually comprising a plurality of rolling stands is 810 ° C. to 875 ° C.
  • the upper limit of the predetermined according to the invention for the final rolling temperature range is set so that no recrystallization of the austenite takes place during rolling in the Fertigwarmwalz Sounds. Accordingly, a fine-grained structure is created after the phase transformation.
  • the lower limit of the finish rolling temperature range is 810 ° C. At this temperature, no ferrite is formed during hot rolling, so that the hot strip is free of ferrite at the exit from the hot rolling mill.
  • the interval between the end of hot rolling and the start of cooling should not exceed 10 s in order to prevent unwanted microstructure constituents from forming in the flat steel product.
  • the structure of the thus-cooled hot rolled flat steel product according to the invention already comprises at least 95% by volume of bainite and martensite on arrival in the coiling station, in which the flat steel product is wound into a coil.
  • the inventively prescribed range of reel temperature is chosen so that the desired bainitic - martensitic microstructure in the finished invention flat steel product is safe. At a reel temperature above 500 ° C., the desired bainitic-martensitic structure would not be achieved, with the result that the mechanical properties desired according to the invention, such as high strength and toughness, would not be achieved either.
  • the lower limit of the coiler temperature should not be exceeded in order to ensure optimum flatness and surface of the flat steel product according to the invention without subsequent treatment and at the same time to achieve the desired tempering effect in the coil.
  • the residual microstructures present in addition to bainite and martensite in martensite, bainite or retained austenite, as well as other production-related unavoidable components, but ineffective with regard to the properties of the flat steel product according to the invention.
  • the thickness of hot-rolled flat steel products produced according to the invention is 2 to 12 mm.
  • the hot strip produced in each case is therefore directly from the rolling heat after the thermomechanical rolling, by the combination of a pre-rolling performed according to the invention with a finished hot rolling also carried out according to the invention is cooled at high cooling rates, in such a way that the desired structure and thus the mechanical properties are set without subsequent heat treatment.
  • the hot rolling in the hot rolling mill is carried out according to the invention specifically without application of lubricant to the hot strip, the surface of the flat steel product is free of lubricant on leaving the hot rolling stand.
  • Dispensing with lubricant has the advantage that the effort associated with the application of lubricant in the rolling process is eliminated and thus ensures greater efficiency of the overall process. At the same time, by eliminating lubricants, resources are conserved and the environmental and climate impact minimized.
  • the procedure according to the invention in the production of flat steel products according to the invention has the advantage that the phase transformation takes place after the end of hot rolling from a dislocation-rich austenite with high cooling rates. In this way, a fine-grained bainitic-martensitic structure and good toughness or elongation at break properties are achieved.
  • the method according to the invention requires a composition of the steel flat product produced according to the invention, which is characterized by low-cost alloying elements present in comparatively low contents. Expensive and rare alloying elements are not required for the production of a flat steel product according to the invention, so that in this respect too, the production of flat steel products according to the invention is associated Production costs are minimized.
  • the alloy concept based on minimized alloy contents contributes to optimum weldability of flat steel products according to the invention.
  • the surface finishes of hot-rolled flat steel products according to the invention are improved over conventionally produced high-strength hot strips. At the same time, the production costs are reduced.
  • the inventively provided manufacturing path is much simpler, so that it can be carried out with less effort and secure success.
  • One of the essential features of the method of manufacture according to the invention is therefore that the mechanical properties are adjusted by the rolling process, the subsequent rapid cooling and the reeling. Further heat treatments after reeling are not necessary with the procedure according to the invention in order to set the desired properties of the particular flat steel product according to the invention.
  • the high toughness and elongation at break of a flat steel product according to the invention is rather achieved without subsequent heat treatment.
  • the invention thus provides a flat steel product with a minimum yield strength of 900 MPa, whose range of properties make it particularly suitable for the lightweight construction of commercial vehicle chassis and other body parts that are exposed to high loads during use.
  • melts S1, S2 Two steel melts S1, S2 have been produced in the laboratory, the compositions of which are given in Table 1.
  • the melts S1, S2 have each been cast into slabs. Due to the laboratory conditions, the dimensions of the slabs cast from the steels S1, S2 each were 150 mm ⁇ 150 mm ⁇ 500 mm.
  • the slabs were each heated to an austenitizing temperature T A.
  • the slabs thus heated or held at the respective austenitizing temperature T A are then pre-rolled at roughing temperatures T V and Vorwalzumformgraden e V and then hot rolled at Fertigwalzumformgraden e F and hot rolling end temperatures T WE to hot strips W1 - W17 with a thickness d of 3-10 mm ,
  • the obtained hot strips W1-W17 were accelerated at a cooling rate dT to a coiling temperature T H , at which they were subsequently wound into a coil.
  • the steel from which the respective hot strip W1-W17 was produced is shown, as well as the respectively set austenitizing temperature T A , the rough-rolling temperature T V , the pre-rolling deformation degree e V , the hot rolling end temperature T WE , the total degree of deformation e F achieved via the finish hot rolling, the thickness d, the cooling rate dT and the reel temperature T H.
  • the structural analysis was carried out by means of light and Scanning electron microscopy on longitudinal sections. For this, the samples were taken from a quarter of the bandwidth of the hot strips W1 - W17 and etched with Nital or sodium disulfite.
  • the microstructure of the hot strips W1-W9 produced according to the invention and the hot strips W12-W16 likewise produced according to the invention has between 5% and 33% martensite, with the remainder each consisting of bainite.
  • the hot strips produced according to the invention each have high strength values in combination with good elongation properties.
  • the structure consists only of bainite.
  • the hot strips W10, W11 and W17 not according to the invention do not reach the optimum combination of properties which characterizes the hot strips W1-W9 and W12-W16 produced according to the invention.

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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)
EP14154354.6A 2014-02-07 2014-02-07 Hochfestes Stahlflachprodukt mit bainitisch-martensitischem Gefüge und Verfahren zur Herstellung eines solchen Stahlflachprodukts Active EP2905348B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP14154354.6A EP2905348B1 (de) 2014-02-07 2014-02-07 Hochfestes Stahlflachprodukt mit bainitisch-martensitischem Gefüge und Verfahren zur Herstellung eines solchen Stahlflachprodukts
RU2016135949A RU2675191C2 (ru) 2014-02-07 2015-02-03 Высокопрочный плоский стальной прокат с бейнитно-мартенситной микроструктурой и способ изготовления такого плоского стального проката
US15/116,958 US10724113B2 (en) 2014-02-07 2015-02-03 High-strength flat steel product having a bainitic-martensitic microstructure and method for producing such a flat steel product
PCT/EP2015/052135 WO2015117934A1 (de) 2014-02-07 2015-02-03 Hochfestes stahlflachprodukt mit bainitisch-martensitischem gefüge und verfahren zur herstellung eines solchen stahlflachprodukts
AU2015215080A AU2015215080B2 (en) 2014-02-07 2015-02-03 High-strength flat steel product having a bainitic-martensitic microstructure and method for producing such a flat steel product
BR112016016949-2A BR112016016949B1 (pt) 2014-02-07 2015-02-03 produto plano de aço e método para produzir um produto plano de aço
MX2016009530A MX2016009530A (es) 2014-02-07 2015-02-03 Producto plano de acero de alta resistencia con estructura bainitica-martensitica y procedimiento para la fabricacion de un producto plano de acero de este tipo.
CA2936733A CA2936733C (en) 2014-02-07 2015-02-03 High-strength flat steel product having a bainitic-martensitic microstructure and method for producing such a flat steel product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14154354.6A EP2905348B1 (de) 2014-02-07 2014-02-07 Hochfestes Stahlflachprodukt mit bainitisch-martensitischem Gefüge und Verfahren zur Herstellung eines solchen Stahlflachprodukts

Publications (2)

Publication Number Publication Date
EP2905348A1 EP2905348A1 (de) 2015-08-12
EP2905348B1 true EP2905348B1 (de) 2019-09-04

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EP14154354.6A Active EP2905348B1 (de) 2014-02-07 2014-02-07 Hochfestes Stahlflachprodukt mit bainitisch-martensitischem Gefüge und Verfahren zur Herstellung eines solchen Stahlflachprodukts

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US (1) US10724113B2 (es)
EP (1) EP2905348B1 (es)
AU (1) AU2015215080B2 (es)
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CN111500940B (zh) * 2020-06-08 2020-10-16 南京工程学院 具有抑制摩擦火花特性的合金钢锻造制动盘及其制造方法
CN112647014B (zh) * 2020-11-23 2022-03-22 首钢集团有限公司 一种适用于海洋大气环境用建筑结构钢及其生产方法
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RU2016135949A (ru) 2018-03-15
US20170081739A1 (en) 2017-03-23
CA2936733A1 (en) 2015-08-13
BR112016016949B1 (pt) 2021-03-09
RU2016135949A3 (es) 2018-07-24
AU2015215080A1 (en) 2016-08-18
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WO2015117934A1 (de) 2015-08-13
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