JP2015034334A - めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 - Google Patents
めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 Download PDFInfo
- Publication number
- JP2015034334A JP2015034334A JP2014068539A JP2014068539A JP2015034334A JP 2015034334 A JP2015034334 A JP 2015034334A JP 2014068539 A JP2014068539 A JP 2014068539A JP 2014068539 A JP2014068539 A JP 2014068539A JP 2015034334 A JP2015034334 A JP 2015034334A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- less
- layer
- oxide layer
- plated steel
- 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.)
- Ceased
Links
Classifications
-
- 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
-
- 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
-
- 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
- B32B15/012—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 aluminium or an aluminium alloy
-
- 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
-
- 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
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- 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
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
-
- 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
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
-
- 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
- C21D8/0236—Cold 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
- C21D8/0257—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with diffusion of elements, e.g. decarburising, nitriding
-
- 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
- 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
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
-
- 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
- C22C38/08—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
- 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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with 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
- C22C38/18—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
-
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising or reducing atmosphere
-
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0224—Two or more thermal pretreatments
-
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
-
- 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
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
- C23C28/3225—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only with at least one zinc-based layer
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
-
- 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
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
-
- 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
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
- C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
- C23C8/16—Oxidising using oxygen-containing compounds, e.g. water, carbon dioxide
- C23C8/18—Oxidising of ferrous surfaces
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12736—Al-base component
- Y10T428/1275—Next to Group VIII or IB metal-base component
- Y10T428/12757—Fe
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12785—Group IIB metal-base component
- Y10T428/12792—Zn-base component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12785—Group IIB metal-base component
- Y10T428/12792—Zn-base component
- Y10T428/12799—Next to Fe-base component [e.g., galvanized]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
- Y10T428/12958—Next to Fe-base component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
- Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]
Abstract
Description
(A)内部酸化層:Siおよび/またはMnの酸化物を含む層である。内部酸化層の平均深さtは、4μm以上、後記する(B)に記載の軟質層の平均深さT未満である。
(B)軟質層:上記内部酸化層を含み、ビッカース硬さが、上記鋼板のt/4部(tは鋼板の板厚)におけるビッカース硬さの90%以下を満足する。軟質層の平均深さTは、20μm以上である。
(C)硬質層:マルテンサイトとベイナイトを主体とする組織で構成される。
まず、めっき層と鋼板の界面に直接接する部分は、図1に示すように、平均深さtが4μm以上の内部酸化層を有する。ここで、平均深さとは、上記界面からの平均深さを意味し、その詳細な測定方法は、後記する実施例の欄において図2を用いて説明する。
本発明において軟質層は、図1に示すように、上記(A)の内部酸化層の領域を含む層であって、且つ、ビッカース硬さが、鋼板のt/4部におけるビッカース硬さの90%以下を満足するものである。上記ビッカース硬さの詳細な測定方法は、後記する実施例の欄で説明する。
本発明において硬質層は、図1に示すように、上記(B)の軟質層の鋼板側に形成され、且つ、マルテンサイトとベイナイトを主体とする組織で構成される。上記硬質層のマルテンサイトは焼き戻しされていても良い。ここで「主体とする」とは、後記する実施例の記載の方法で組織分率を測定したとき、全組織に対する、ベイナイトとマルテンサイトの合計面積率が80面積%以上であり、且つ、全組織に対するフェライトの面積率が5面積%以下(0面積%を含む)のものを意味する。ベイナイトとマルテンサイトの合計面積率は多い程良く、好ましくは93面積%以上である。一方、フェライトの面積率は少ない程良く、5面積%以下が好ましく、3面積%以下がより好ましく、最も好ましくは0面積%である。
Cは、焼入れ性を向上させ、またマルテンサイトの硬質化効果により、鋼の高強度化に重要な元素である。このような効果を有効に発揮させるため、C量の下限を0.05%以上とする。C量の好ましい下限は0.08%以上であり、より好ましくは0.10%以上である。しかし、Cを過剰に添加すると、軟質相と硬質相の硬度差が大きくなり、加工性および耐遅れ破壊特性が低下するため、C量の上限を0.25%とする。C量の好ましい上限は0.2%以下であり、より好ましくは0.18%以下である。
Siは固溶強化により鋼の強度を高め、加工性向上にも有効な元素である。また、内部酸化層を生成し、水素脆化の抑制作用も有する。このような効果を有効に発揮させるため、Si量の下限を0.5%以上とする。Si量の好ましい下限は0.75%以上であり、より好ましくは1%以上である。しかし、Siはフェライト生成元素であり、Siを過剰に添加すると、フェライトの生成を抑制できず、軟質相と硬質相の硬度差が大きくなり、加工性が低下する。更には、めっき性も悪くなるため、Si量の上限を2.5%とする。Si量の好ましい上限は2%以下であり、より好ましくは1.8%以下である。
Mnは、焼入れ性向上元素であり、フェライトおよびベイナイトを抑制し、マルテンサイトを生成させて高強度化に寄与する。このような効果を有効に発揮させるため、Mn量の下限を2.0%以上とする。Mn量の好ましい下限は2.3%以上であり、より好ましくは2.5%以上である。しかし、Mnを過剰に添加すると、めっき性が低下し、また偏析も著しくなる。更に、Pの粒界偏析を助長する虞がある。そのため、Mn量の上限を4%とする。Mn量の好ましい上限は3.5%以下である。
Pは、固溶強化元素として鋼の強化に有用な元素である。しかし、過剰に添加すると、加工性のほか、溶接性、靱性を劣化させる虞があるため、その上限を0.1%以下とする。P量は少ない方が良く、好ましくは0.03%以下、より好ましくは0.015%以下である。
Sは、MnSなどの硫化物を形成し、割れの起点なり、加工性を劣化させる虞がある。そのため、S量の上限を0.05%以下とする。S量は少ない方が良く、好ましくは0.01%以下、より好ましくは0.008%以下である。
Alは、脱酸剤として作用する。またAlはNと結合してAlNとなり、オーステナイト粒径の微細化により加工性および耐遅れ破壊特性も向上する。このような作用を有効に発揮させるため、Al量の下限を0.01%以上とする。Al量の好ましい下限は0.02%以上であり、より好ましくは0.03%以上である。しかし、Alを過剰に添加すると、アルミナなどの介在物が増加して加工性が劣化するほか、靱性も劣化するようになる。そのため、Al量の上限を0.1%とする。Al量の好ましい上限は0.08%以下であり、より好ましくは0.05%以下である。
Nは、不可避的に含有する元素であるが、過剰に含まれると加工性が劣化する。また、鋼中にB(ホウ素)を添加した場合には、BN析出物が生成し、Bによる焼入れ性向上作用を阻害するため、Nはできるだけ低減する方が良い。そのため、N量の上限を0.01%以下とする。N量の好ましい上限は0.008%以下であり、より好ましくは0.005%以下である。
これらの元素は、鋼板の強度上昇に有効な元素である。これらの元素は単独で添加しても良いし、二種以上を併用しても良い。
これらの元素は、組織微細化による加工性および耐遅れ破壊特性向上に有効な元素である。これらの元素は単独で添加しても良いし、二種以上を併用しても良い。
CuおよびNiは、高強度化に有効な元素である。これらの元素は単独で添加しても良いし、併用しても良い。
本発明に係る第一の製造方法は、熱延工程と、酸洗、冷延工程と、連続溶融Znめっきライン(CGL)での酸化工程、還元工程、およびめっき工程とに大別される。そして本発明の特徴部分は、上記鋼中成分を満足する鋼板を、600℃以上の温度で巻取ることにより内部酸化層を形成した熱延鋼板を得る熱延工程と、内部酸化層の平均深さtが4μm以上残るように酸洗・冷間圧延する工程と、酸化帯にて、0.9〜1.4の空燃比で酸化する工程と、還元帯にて、Ac3点〜Ac3点+100℃の範囲で均熱する工程と、を、この順序で含むところにある。
Ac3(℃)=910−203×[C]1/2−15.2×[Ni]+44.7×[Si]+104×[V]+31.5×[Mo]+13.1×[W]−{30×[Mn]+11×[Cr]+20×[Cu]−700×[P]−400×[Al]−120×[As]−400×[Ti]} ・・・(i)
本発明に係る第二の製造方法は、上記鋼中成分を満足する熱延鋼板を、500℃以上の温度で巻取る熱延工程と、500℃以上の温度で80分以上保温する工程と、内部酸化層の平均深さtが4μm以上残るように酸洗・冷間圧延する工程と、酸化帯にて、0.9〜1.4の空燃比で酸化する工程と、還元帯にて、Ac3点〜Ac3点+100℃の範囲で均熱する工程と、を、この順序で含む。前述した第一の製造方法と対比すると、上記第二の製造方法では、熱延後巻取温度の下限を500℃以上にしたこと、熱延工程の後に保温工程を設けたことの二点でのみ上記第一の製造方法と相違する。よって、以下では、当該相違点のみ説明する。上記第一の製造方法と一致する工程は、上記第一の製造方法を参照すればよい。
酸洗液:10%塩酸、温度:82℃、酸洗時間:表2のとおり。
めっき鋼板のW/4部(Wは板幅)から試験片を採取した(サイズ50mm×50mm)後、グロー放電発光分析法(GD−OES)にて、めっき層表面からのO量、Fe量、およびZn量をそれぞれ分析し、定量した。詳細には、堀場製作所製GD−PROFILER2型GDA750のGD−OES装置を用いて、上記試験片の表面を、Arグロー放電領域内で高周波スパッタリングし、スパッタされる各元素(O、Fe、Zn)のArプラズマ内における発光線を連続的に分光することによって、鋼板の深さ方向における各元素量プロファイル測定した。スパッタ条件は以下のとおりであり、測定領域は、めっき層表面から深さ50μmまでとした。
パルススパッタ周波数:50Hz
アノード径(分析面積):直径6mm
放電電力:30W
Arガス圧:2.5hPa
酸洗・冷間圧延後の鋼板を用いたこと以外は上記(1)と同様にして、内部酸化層の平均深さを算出した。
めっき鋼板の板幅W方向に対して垂直な断面(W/4部)を露出させ、試験片を採取した(サイズ20mm×20mm)後、樹脂に埋め込み、めっき層と母材(鋼板)の界面から鋼板の板厚(t)内部に向かってビッカース硬さを測定した。測定はビッカース硬度計を用い、荷重3gfにて行った。詳細には図3に示すように、めっき層と母材の界面から板厚内部深さ10μmの測定位置から、板厚内部に向かって5μmピッチごとに測定を行い、深さ100μmまでビッカース硬さを測定した。測定点同士の間隔(図3中、×と×の距離)は、最低でも15μm以上とした。各深さでn=1ずつビッカース硬さを測定し、板厚内部方向の硬さ分布を調査した。更に、鋼板のt/4部におけるビッカース硬さも同様にして測定した。t/4部と比較してビッカース硬さが90%以下の領域を軟質層とし、その深さを計算した。同様の処理を、同じ試験片で3箇所実施し、その平均を軟質層の平均深さTとした。
めっき鋼板の板幅W方向に対して垂直な断面(W/4部)を露出させ、この断面を研磨し、更に電解研磨した後、ナイタールで腐食させたものをSEM観察した。観察位置はt/4位置(tは板厚)とし、観察倍率は2000倍、観察領域は40μm×40μmとした。SEMで撮影した金属組織写真を画像解析し、マルテンサイトとベイナイト(両者は区別せず)、およびフェライトの面積率を夫々測定した。表3中、α=フェライト、(B+M)=(ベイナイト+マルテンサイト)を意味する。また、表3中、「その他」の組織の面積分率は、100面積%から、マルテンサイトとベイナイト、およびフェライトの各面積率を引いて算出した。観察は任意に3視野について行い、平均値を算出した。
めっき鋼板の圧延方向に垂直な方向と試験片の長手方向が平行になるようにJIS 13号B引張試験片を採取し、JIS Z2241に従ってC方向の引張強度(TS)および降伏応力(YS)を測定した。TSおよびYSより、降伏比YR(YS/TS)を算出した。
めっき鋼板の圧延方向に垂直な方向と試験片の長手方向が平行になるようにめっき鋼板から切り出した20mm×70mmの試験片を用意し、曲げ稜線が長手方向となるように90°V曲げ試験を行った。曲げ半径Rを適宜変化させて試験を実施し、試験片に割れが発生することなく曲げ加工できる最小曲げ半径Rminを求めた。
TSが980MPa以上、1080MPa未満の場合、Rmin/t<1.0を合格
TSが1080MPa以上、1180MPa未満の場合、Rmin/t<1.5を合格
TSが1180MPa以上の場合、Rmin/t<2.50を合格
めっき鋼板の板幅W方向に対して垂直な断面(W/4部)を露出させ、150mm(W)×30mm(L)の試験片を切り出し、最小曲げ半径にてU曲げ加工を行った後、ボルトで締め付け、U曲げ加工試験片の外側表面に1000MPaの引張応力を負荷した。引張応力の測定は、U曲げ加工試験片の外側に歪ゲージを貼り付け、歪を引張応力に換算して行った。その後、U曲げ加工試験片のエッジ部をマスキングし、電気化学的に水素をチャージさせた。水素チャージは、試験片を、0.1M−H2SO4(pH=3)と0.01M−KSCNの混合溶液中に浸漬し、室温且つ定電流(100μA/mm2)の条件で行なった。
日本鉄鋼連盟規格JFST1001に準じて穴拡げ試験を実施し、λを測定した。詳細には、めっき鋼板に直径10mmの穴を打ち抜いた後、周囲を拘束した状態で60°円錐のポンチを穴に押し込み、亀裂発生限界における穴の直径を測定した。下記式から限界穴拡げ率λ(%)を求め、λが25%以上を合格(穴拡げ性に優れる)と評価した。
限界穴拡げ率λ(%)={(Df−D0)/D0}×100
式中、Dfは亀裂発生限界における穴の直径(mm)、D0は初期穴の直径(mm)
めっき鋼板の外観を目視で観察し、不めっきが観察されない場合を合格(めっき性に優れる)と評価した。
Claims (7)
- 鋼板の表面に、溶融亜鉛めっき層または合金化溶融亜鉛めっき層を有するめっき鋼板であって、
(1)前記鋼板は、
C :0.05〜0.25%(質量%の意味。以下、成分について同じ。)、
Si:0.5〜2.5%、
Mn:2.0〜4%、
P :0.1%以下、
S :0.05%以下、
Al:0.01〜0.1%、および
N :0.01%以下を含有し、
残部が鉄および不可避不純物からなり、
(2)前記鋼板と前記めっき層との界面から鋼板側に向って順に、
Siおよび/またはMnの酸化物を含む内部酸化層と、
前記内部酸化層を含む層であって、且つ、ビッカース硬さが、前記鋼板のt/4部(tは鋼板の板厚を意味する。)におけるビッカース硬さの90%以下を満足する軟質層と、
マルテンサイトとベイナイトを主体とする組織で構成される硬質層と、
を有し、且つ、
前記軟質層の平均深さTが20μm以上、および
前記内部酸化層の平均深さtが4μm以上、前記T未満
を満足することを特徴とする、引張強度が980MPa以上で、めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板。 - 前記内部酸化層の平均深さtと前記軟質層の平均深さTは、T>2tの関係を満足する請求項1に記載の高強度めっき鋼板。
- 前記鋼板が、更に、
Cr:1%以下、
Mo:1%以下、および
B :0.01%以下よりなる群から選択される少なくとも一種を含有するものである請求項1または2に記載の高強度めっき鋼板。 - 前記鋼板が、更に、
Ti:0.2%以下、
Nb:0.2%以下、および
V :0.2%以下よりなる群から選択される少なくとも一種を含有するものである請求項1〜3のいずれかに記載の高強度めっき鋼板。 - 前記鋼板が、更に、
Cu:1%以下、および
Ni:1%以下よりなる群から選択される少なくとも一種を含有するものである請求項1〜4のいずれかに記載の高強度めっき鋼板。 - 請求項1〜5のいずれかに記載の高強度めっき鋼板を製造する方法であって、
請求項1、3〜5のいずれかに記載の鋼中成分を満足する鋼板を、600℃以上の温度で巻取る熱延工程と、内部酸化層の平均深さtが4μm以上残るように酸洗・冷間圧延する工程と、酸化帯にて、0.9〜1.4の空燃比で酸化する工程と、還元帯にて、Ac3点〜Ac3点+100℃の範囲で均熱する工程を、この順序で含むことを特徴とする高強度めっき鋼板の製造方法。 - 請求項1〜5のいずれかに記載の高強度めっき鋼板を製造する方法であって、
請求項1、3〜5のいずれかに記載の鋼中成分を満足する鋼板を、500℃以上の温度で巻取る熱延工程と、500℃以上の温度で80分以上保温する工程と、内部酸化層の平均深さtが4μm以上残るように酸洗・冷間圧延する工程と、酸化帯にて、0.9〜1.4の空燃比で酸化する工程と、還元帯にて、Ac3点〜Ac3点+100℃の範囲で均熱する工程を、この順序で含むことを特徴とする高強度めっき鋼板の製造方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014068539A JP2015034334A (ja) | 2013-07-12 | 2014-03-28 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
KR1020167003509A KR101754543B1 (ko) | 2013-07-12 | 2014-07-02 | 도금성, 가공성 및 내지연파괴특성이 우수한 고강도 도금 강판, 및 그의 제조 방법 |
PCT/JP2014/067663 WO2015005191A1 (ja) | 2013-07-12 | 2014-07-02 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
MX2016000266A MX2016000266A (es) | 2013-07-12 | 2014-07-02 | Lamina de acero chapado de alta resistencia que tiene propiedades superiores de chapado, capacidad de manipulacion, y resistencia a la fractura retardada, y metodo de produccion la misma. |
US14/903,158 US20160160335A1 (en) | 2013-07-12 | 2014-07-02 | High-strength plated steel sheet having superior plating properties, workability, and delayed fracture resistance, and method for producing same |
EP14823492.5A EP3020842B1 (en) | 2013-07-12 | 2014-07-02 | High-strength plated steel sheet having superior plating properties, workability, and delayed fracture resistance, and method for producing same |
CN201480035852.2A CN105324506B (zh) | 2013-07-12 | 2014-07-02 | 镀覆性、加工性及耐延迟断裂特性优异的高强度镀覆钢板、以及其制造方法 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013147031 | 2013-07-12 | ||
JP2013147031 | 2013-07-12 | ||
JP2014068539A JP2015034334A (ja) | 2013-07-12 | 2014-03-28 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018133291A Division JP2018193614A (ja) | 2013-07-12 | 2018-07-13 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2015034334A true JP2015034334A (ja) | 2015-02-19 |
Family
ID=52279876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014068539A Ceased JP2015034334A (ja) | 2013-07-12 | 2014-03-28 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20160160335A1 (ja) |
EP (1) | EP3020842B1 (ja) |
JP (1) | JP2015034334A (ja) |
KR (1) | KR101754543B1 (ja) |
CN (1) | CN105324506B (ja) |
MX (1) | MX2016000266A (ja) |
WO (1) | WO2015005191A1 (ja) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015146692A1 (ja) * | 2014-03-28 | 2015-10-01 | 株式会社神戸製鋼所 | 加工性、および耐遅れ破壊特性に優れた高強度合金化溶融亜鉛めっき鋼板、並びにその製造方法 |
WO2017086745A1 (ko) * | 2015-11-20 | 2017-05-26 | 주식회사 포스코 | 전단가공성이 우수한 고강도 냉연강판 및 그 제조방법 |
KR20180043331A (ko) * | 2015-10-02 | 2018-04-27 | 가부시키가이샤 고베 세이코쇼 | 열간 프레스용 아연도금 강판 및 열간 프레스 성형품의 제조 방법 |
JP2018518596A (ja) * | 2015-05-12 | 2018-07-12 | ポスコPosco | 曲げ加工性に優れた超高強度熱延鋼板及びその製造方法 |
WO2018151331A1 (ja) | 2017-02-20 | 2018-08-23 | 新日鐵住金株式会社 | 高強度鋼板 |
WO2018151322A1 (ja) | 2017-02-20 | 2018-08-23 | 新日鐵住金株式会社 | 高強度鋼板 |
KR20180114004A (ko) * | 2015-12-21 | 2018-10-17 | 뵈스트알파인 스탈 게엠베하 | 고강도 갈바닐링되는 강판 및 이러한 강판을 제조하는 방법 |
KR20180120210A (ko) | 2016-03-31 | 2018-11-05 | 제이에프이 스틸 가부시키가이샤 | 박 강판 및 도금 강판, 그리고, 열연 강판의 제조 방법, 냉연 풀 하드 강판의 제조 방법, 박 강판의 제조 방법 및 도금 강판의 제조 방법 |
KR20180120715A (ko) | 2016-03-31 | 2018-11-06 | 제이에프이 스틸 가부시키가이샤 | 박 강판 및 도금 강판, 그리고, 열연 강판의 제조 방법, 냉연 풀 하드 강판의 제조 방법, 박 강판의 제조 방법 및 도금 강판의 제조 방법 |
WO2020196060A1 (ja) | 2019-03-28 | 2020-10-01 | 日本製鉄株式会社 | 高強度鋼板 |
KR20200131331A (ko) | 2018-03-28 | 2020-11-23 | 가부시키가이샤 고베 세이코쇼 | 합금화 용융 아연도금 강판, 및 합금화 용융 아연도금 강판의 제조 방법 |
WO2021186510A1 (ja) | 2020-03-16 | 2021-09-23 | 日本製鉄株式会社 | 鋼板 |
WO2021251276A1 (ja) * | 2020-06-08 | 2021-12-16 | 日本製鉄株式会社 | 鋼板及びその製造方法 |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014000969A1 (de) * | 2014-01-27 | 2015-07-30 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Kraftfahrzeugbauteil |
JP6010144B2 (ja) | 2015-01-09 | 2016-10-19 | 株式会社神戸製鋼所 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
JP6093411B2 (ja) * | 2015-01-09 | 2017-03-08 | 株式会社神戸製鋼所 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
WO2016111275A1 (ja) * | 2015-01-09 | 2016-07-14 | 株式会社神戸製鋼所 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
WO2016111274A1 (ja) * | 2015-01-09 | 2016-07-14 | 株式会社神戸製鋼所 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
JP6093412B2 (ja) * | 2015-01-09 | 2017-03-08 | 株式会社神戸製鋼所 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
KR101758485B1 (ko) * | 2015-12-15 | 2017-07-17 | 주식회사 포스코 | 표면품질 및 점 용접성이 우수한 고강도 용융아연도금강판 및 그 제조방법 |
JP6249140B1 (ja) * | 2016-01-27 | 2017-12-20 | Jfeスチール株式会社 | 高降伏比型高強度亜鉛めっき鋼板及びその製造方法 |
KR101830527B1 (ko) | 2016-09-26 | 2018-02-21 | 주식회사 포스코 | 내식성 및 점용접성이 우수한 열간성형용 냉연강판, 열간성형부재 및 그들의 제조방법 |
CN108070795A (zh) * | 2016-11-18 | 2018-05-25 | 北方工业大学 | 一种大跨度空间用钢结构材料 |
CN108070791B (zh) * | 2016-11-18 | 2021-12-21 | 北方工业大学 | 一种矿山加固用高强度锚杆 |
DE102017223633A1 (de) | 2017-12-21 | 2019-06-27 | Voestalpine Stahl Gmbh | Kaltgewalztes Stahlflachprodukt mit metallischer Korrosionsschutzschicht und Verfahren zur Herstellung eines solchen |
WO2019188235A1 (ja) * | 2018-03-28 | 2019-10-03 | 株式会社神戸製鋼所 | 合金化溶融亜鉛めっき鋼板、及び合金化溶融亜鉛めっき鋼板の製造方法 |
US11613789B2 (en) | 2018-05-24 | 2023-03-28 | GM Global Technology Operations LLC | Method for improving both strength and ductility of a press-hardening steel |
US11612926B2 (en) | 2018-06-19 | 2023-03-28 | GM Global Technology Operations LLC | Low density press-hardening steel having enhanced mechanical properties |
KR102200175B1 (ko) * | 2018-12-19 | 2021-01-08 | 주식회사 포스코 | 점 용접성이 우수한 아연도금강판 및 그 제조방법 |
JP6787535B1 (ja) * | 2019-03-11 | 2020-11-18 | Jfeスチール株式会社 | 高強度鋼板およびその製造方法 |
US11530469B2 (en) | 2019-07-02 | 2022-12-20 | GM Global Technology Operations LLC | Press hardened steel with surface layered homogenous oxide after hot forming |
CN111485188A (zh) * | 2020-04-02 | 2020-08-04 | 鞍钢股份有限公司 | 一种采用预氧化技术提升高强钢板表面可镀性的方法 |
DE102020214293B4 (de) | 2020-11-13 | 2022-09-15 | Thyssenkrupp Steel Europe Ag | Stahlflachprodukt mit verbesserter Zinkbeschichtung |
WO2022191008A1 (ja) * | 2021-03-08 | 2022-09-15 | 株式会社神戸製鋼所 | 溶融亜鉛めっき鋼板の製造方法および合金化溶融亜鉛めっき鋼板の製造方法 |
EP4269644A4 (en) * | 2021-03-10 | 2024-03-13 | Nippon Steel Corp | COLD ROLLED STEEL SHEET AND METHOD FOR PRODUCING THE SAME |
JPWO2022190958A1 (ja) * | 2021-03-10 | 2022-09-15 | ||
WO2023013372A1 (ja) | 2021-08-02 | 2023-02-09 | 日本製鉄株式会社 | 高強度鋼板 |
DE102021128327A1 (de) | 2021-10-29 | 2023-05-04 | Voestalpine Stahl Gmbh | Kaltgewalztes stahlflachprodukt mit metallischer korrosionsschutzschicht und verfahren zur herstellung eines solchen |
WO2023094856A1 (en) | 2021-11-24 | 2023-06-01 | Arcelormittal | Zinc coated mn-containing advanced high strength steel and method of manufacturing the same |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09310148A (ja) * | 1996-05-20 | 1997-12-02 | Kawasaki Steel Corp | 高強度冷延鋼板 |
JPH10130782A (ja) * | 1996-11-01 | 1998-05-19 | Nippon Steel Corp | 超高強度冷延鋼板およびその製造方法 |
JP2007211279A (ja) * | 2006-02-08 | 2007-08-23 | Nippon Steel Corp | 耐水素脆性に優れた超高強度鋼板とその製造方法及び超高強度溶融亜鉛めっき鋼板の製造方法並びに超高強度合金化溶融亜鉛めっき鋼板の製造方法 |
JP2008024972A (ja) * | 2006-07-19 | 2008-02-07 | Nippon Steel Corp | 耐チッピング性に優れた高強度合金化溶融めっき鋼板 |
WO2011025042A1 (ja) * | 2009-08-31 | 2011-03-03 | 新日本製鐵株式会社 | 高強度溶融亜鉛めっき鋼板及びその製造方法 |
WO2013100615A1 (en) * | 2011-12-28 | 2013-07-04 | Posco | High-strength hot-dip galvanized steel sheet having excellent plating surface quality and adhesion, and method of manufacturing the same |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5636727B2 (ja) | 2010-04-27 | 2014-12-10 | 新日鐵住金株式会社 | 溶融亜鉛めっき鋼板およびその製造方法 |
TWI467028B (zh) * | 2011-09-30 | 2015-01-01 | Nippon Steel & Sumitomo Metal Corp | High-strength hot-dip galvanized steel sheet with excellent impact resistance and its manufacturing method and high-strength alloyed hot-dip galvanized steel sheet and manufacturing method thereof |
CA2850332C (en) * | 2011-09-30 | 2016-06-21 | Nippon Steel & Sumitomo Metal Corporation | High-strength hot-dip galvanized steel sheet and high-strength alloyed hot-dip galvanized steel sheet excellent in mechanical cutting property, and manufacturing method thereof |
-
2014
- 2014-03-28 JP JP2014068539A patent/JP2015034334A/ja not_active Ceased
- 2014-07-02 WO PCT/JP2014/067663 patent/WO2015005191A1/ja active Application Filing
- 2014-07-02 CN CN201480035852.2A patent/CN105324506B/zh not_active Expired - Fee Related
- 2014-07-02 KR KR1020167003509A patent/KR101754543B1/ko active IP Right Grant
- 2014-07-02 US US14/903,158 patent/US20160160335A1/en not_active Abandoned
- 2014-07-02 MX MX2016000266A patent/MX2016000266A/es unknown
- 2014-07-02 EP EP14823492.5A patent/EP3020842B1/en not_active Not-in-force
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09310148A (ja) * | 1996-05-20 | 1997-12-02 | Kawasaki Steel Corp | 高強度冷延鋼板 |
JPH10130782A (ja) * | 1996-11-01 | 1998-05-19 | Nippon Steel Corp | 超高強度冷延鋼板およびその製造方法 |
JP2007211279A (ja) * | 2006-02-08 | 2007-08-23 | Nippon Steel Corp | 耐水素脆性に優れた超高強度鋼板とその製造方法及び超高強度溶融亜鉛めっき鋼板の製造方法並びに超高強度合金化溶融亜鉛めっき鋼板の製造方法 |
JP2008024972A (ja) * | 2006-07-19 | 2008-02-07 | Nippon Steel Corp | 耐チッピング性に優れた高強度合金化溶融めっき鋼板 |
WO2011025042A1 (ja) * | 2009-08-31 | 2011-03-03 | 新日本製鐵株式会社 | 高強度溶融亜鉛めっき鋼板及びその製造方法 |
WO2013100615A1 (en) * | 2011-12-28 | 2013-07-04 | Posco | High-strength hot-dip galvanized steel sheet having excellent plating surface quality and adhesion, and method of manufacturing the same |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015193907A (ja) * | 2014-03-28 | 2015-11-05 | 株式会社神戸製鋼所 | 加工性、および耐遅れ破壊特性に優れた高強度合金化溶融亜鉛めっき鋼板、並びにその製造方法 |
WO2015146692A1 (ja) * | 2014-03-28 | 2015-10-01 | 株式会社神戸製鋼所 | 加工性、および耐遅れ破壊特性に優れた高強度合金化溶融亜鉛めっき鋼板、並びにその製造方法 |
JP2018518596A (ja) * | 2015-05-12 | 2018-07-12 | ポスコPosco | 曲げ加工性に優れた超高強度熱延鋼板及びその製造方法 |
KR102051284B1 (ko) * | 2015-10-02 | 2019-12-03 | 가부시키가이샤 고베 세이코쇼 | 열간 프레스용 아연도금 강판 및 열간 프레스 성형품의 제조 방법 |
KR20180043331A (ko) * | 2015-10-02 | 2018-04-27 | 가부시키가이샤 고베 세이코쇼 | 열간 프레스용 아연도금 강판 및 열간 프레스 성형품의 제조 방법 |
WO2017086745A1 (ko) * | 2015-11-20 | 2017-05-26 | 주식회사 포스코 | 전단가공성이 우수한 고강도 냉연강판 및 그 제조방법 |
KR102580316B1 (ko) | 2015-12-21 | 2023-09-18 | 뵈스트알파인 스탈 게엠베하 | 고강도 갈바닐링되는 강판 및 이러한 강판을 제조하는 방법 |
KR20180114004A (ko) * | 2015-12-21 | 2018-10-17 | 뵈스트알파인 스탈 게엠베하 | 고강도 갈바닐링되는 강판 및 이러한 강판을 제조하는 방법 |
US11136636B2 (en) | 2016-03-31 | 2021-10-05 | Jfe Steel Corporation | Steel sheet, plated steel sheet, method of production of hot-rolled steel sheet, method of production of cold-rolled full hard steel sheet, method of production of steel sheet, and method of production of plated steel sheet |
KR20180120210A (ko) | 2016-03-31 | 2018-11-05 | 제이에프이 스틸 가부시키가이샤 | 박 강판 및 도금 강판, 그리고, 열연 강판의 제조 방법, 냉연 풀 하드 강판의 제조 방법, 박 강판의 제조 방법 및 도금 강판의 제조 방법 |
KR20180120715A (ko) | 2016-03-31 | 2018-11-06 | 제이에프이 스틸 가부시키가이샤 | 박 강판 및 도금 강판, 그리고, 열연 강판의 제조 방법, 냉연 풀 하드 강판의 제조 방법, 박 강판의 제조 방법 및 도금 강판의 제조 방법 |
US11136642B2 (en) | 2016-03-31 | 2021-10-05 | Jfe Steel Corporation | Steel sheet, plated steel sheet, method of production of hot-rolled steel sheet, method of production of cold-rolled full hard steel sheet, method of production of steel sheet, and method of production of plated steel sheet |
EP3584348A4 (en) * | 2017-02-20 | 2020-08-05 | Nippon Steel Corporation | HIGH STRENGTH STEEL PLATE |
US11261505B2 (en) | 2017-02-20 | 2022-03-01 | Nippon Steel Corporation | High strength steel sheet |
KR20190108129A (ko) | 2017-02-20 | 2019-09-23 | 닛폰세이테츠 가부시키가이샤 | 고강도 강판 |
WO2018151331A1 (ja) | 2017-02-20 | 2018-08-23 | 新日鐵住金株式会社 | 高強度鋼板 |
US11408046B2 (en) | 2017-02-20 | 2022-08-09 | Nippon Steel Corporation | High strength steel sheet |
EP3584344A4 (en) * | 2017-02-20 | 2020-08-05 | Nippon Steel Corporation | HIGH RESISTANCE STEEL SHEET |
WO2018151322A1 (ja) | 2017-02-20 | 2018-08-23 | 新日鐵住金株式会社 | 高強度鋼板 |
KR20190102032A (ko) | 2017-02-20 | 2019-09-02 | 닛폰세이테츠 가부시키가이샤 | 고강도 강판 |
KR20200131331A (ko) | 2018-03-28 | 2020-11-23 | 가부시키가이샤 고베 세이코쇼 | 합금화 용융 아연도금 강판, 및 합금화 용융 아연도금 강판의 제조 방법 |
KR20210088646A (ko) | 2019-03-28 | 2021-07-14 | 닛폰세이테츠 가부시키가이샤 | 고강도 강판 |
US11472159B2 (en) | 2019-03-28 | 2022-10-18 | Nippon Steel Corporation | High strength steel sheet |
WO2020196060A1 (ja) | 2019-03-28 | 2020-10-01 | 日本製鉄株式会社 | 高強度鋼板 |
WO2021186510A1 (ja) | 2020-03-16 | 2021-09-23 | 日本製鉄株式会社 | 鋼板 |
KR20220092974A (ko) | 2020-03-16 | 2022-07-04 | 닛폰세이테츠 가부시키가이샤 | 강판 |
WO2021251276A1 (ja) * | 2020-06-08 | 2021-12-16 | 日本製鉄株式会社 | 鋼板及びその製造方法 |
JP7440800B2 (ja) | 2020-06-08 | 2024-02-29 | 日本製鉄株式会社 | 鋼板及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
KR101754543B1 (ko) | 2017-07-06 |
WO2015005191A1 (ja) | 2015-01-15 |
MX2016000266A (es) | 2016-04-20 |
CN105324506B (zh) | 2018-02-09 |
US20160160335A1 (en) | 2016-06-09 |
CN105324506A (zh) | 2016-02-10 |
EP3020842B1 (en) | 2019-03-13 |
EP3020842A4 (en) | 2017-03-15 |
EP3020842A1 (en) | 2016-05-18 |
KR20160030295A (ko) | 2016-03-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2015005191A1 (ja) | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 | |
WO2015146692A1 (ja) | 加工性、および耐遅れ破壊特性に優れた高強度合金化溶融亜鉛めっき鋼板、並びにその製造方法 | |
JP6010144B2 (ja) | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 | |
JP6085347B2 (ja) | 高強度めっき鋼板、並びにその製造方法 | |
JP5454745B2 (ja) | 高強度鋼板およびその製造方法 | |
JP6093411B2 (ja) | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 | |
JP6085348B2 (ja) | 高強度めっき鋼板、並びにその製造方法 | |
JP6093412B2 (ja) | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 | |
JP5194811B2 (ja) | 高強度溶融亜鉛めっき鋼板 | |
JP4901617B2 (ja) | 引張強度が700MPa以上で耐食性、穴拡げ性および延性に優れた合金化溶融亜鉛めっき高強度鋼板及びその製造方法 | |
JP5709151B2 (ja) | 成形性に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 | |
JP2018193614A (ja) | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 | |
WO2016111273A1 (ja) | 高強度めっき鋼板、並びにその製造方法 | |
JP6032300B2 (ja) | 高強度冷延鋼板、高強度めっき鋼板、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、並びにそれらの製造方法 | |
JP6228741B2 (ja) | 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 | |
JP6304455B2 (ja) | 薄鋼板およびめっき鋼板、並びに、熱延鋼板の製造方法、冷延フルハード鋼板の製造方法、熱処理板の製造方法、薄鋼板の製造方法およびめっき鋼板の製造方法 | |
JP2010065273A (ja) | 高強度鋼板およびその製造方法 | |
WO2016111275A1 (ja) | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 | |
JPWO2017169562A1 (ja) | 薄鋼板およびめっき鋼板、並びに、熱延鋼板の製造方法、冷延フルハード鋼板の製造方法、熱処理板の製造方法、薄鋼板の製造方法およびめっき鋼板の製造方法 | |
WO2016111272A1 (ja) | 高強度めっき鋼板、並びにその製造方法 | |
WO2016111274A1 (ja) | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20170111 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20170215 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20170321 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20171220 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180216 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20180515 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20180518 |
|
A045 | Written measure of dismissal of application [lapsed due to lack of payment] |
Free format text: JAPANESE INTERMEDIATE CODE: A045 Effective date: 20180925 |