WO2015045038A1 - Method for diffusion coating heat-resistant metal member with creep reinforcement material, and creep-strength-enhanced heat-resistant metal member - Google Patents

Method for diffusion coating heat-resistant metal member with creep reinforcement material, and creep-strength-enhanced heat-resistant metal member Download PDF

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Publication number
WO2015045038A1
WO2015045038A1 PCT/JP2013/075927 JP2013075927W WO2015045038A1 WO 2015045038 A1 WO2015045038 A1 WO 2015045038A1 JP 2013075927 W JP2013075927 W JP 2013075927W WO 2015045038 A1 WO2015045038 A1 WO 2015045038A1
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Prior art keywords
heat
metal material
creep
resistant metal
resistant
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PCT/JP2013/075927
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French (fr)
Japanese (ja)
Inventor
西田　秀高
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中国電力株式会社
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Application filed by 中国電力株式会社 filed Critical 中国電力株式会社
Priority to JP2015512426A priority Critical patent/JP5925958B2/en
Priority to EP13894771.8A priority patent/EP3050997B1/en
Priority to US15/022,948 priority patent/US20160230262A1/en
Priority to PCT/JP2013/075927 priority patent/WO2015045038A1/en
Priority to CN201380079648.6A priority patent/CN105555988A/en
Priority to PL13894771T priority patent/PL3050997T3/en
Priority to CA2924624A priority patent/CA2924624C/en
Priority to KR1020167006489A priority patent/KR20160043033A/en
Publication of WO2015045038A1 publication Critical patent/WO2015045038A1/en

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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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/14—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying for coating elongate material
    • C23C4/16—Wires; Tubes
    • 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
    • C21D2251/00—Treating composite or clad 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • 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
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
    • 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.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12576—Boride, carbide or nitride 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.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12583—Component contains compound of adjacent metal
    • 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.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12583—Component contains compound of adjacent metal
    • Y10T428/1259—Oxide
    • 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
    • Y10T428/12931—Co-, Fe-, or Ni-base components, alternative to each other

Definitions

  • the present invention relates to a method of diffusing and infiltrating a creep reinforcing material into a refractory metal material member, and a refractory metal material member whose creep strength is enhanced by the method.
  • a material that enhances the creep strength inside a member manufactured using a heat resistant metal material (hereinafter referred to as “heat resistant metal material member”). It is an object of the present invention to provide a method capable of efficiently diffusing and penetrating, and a refractory metal material member having enhanced creep strength by the method.
  • a creep reinforcing material diffusion / penetration method for a refractory metal material member according to the present invention and a refractory metal material member in which the creep strength is strengthened by the method include a configuration described later. More specifically, the present invention provides: (1) Applying or spraying a creep reinforcing material to the surface of the heat resistant metal material member, and covering and fixing the portion with the heat resistant coating member so as to contact the portion where the creep reinforcing material is applied or sprayed, and the heat resistant coating member Heating the refractory metal material member covered with at a temperature of 1000 ° C.
  • the creep reinforcement is selected from B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu and Co
  • a refractory metal material member with enhanced creep strength characterized by containing one or more selected elements; (4) after heating the said refractory metal material member covered with a heat resistant member to a temperature above 1000 ° C., cooled again to the obtained by heating to a temperature above the A 1 transformation point (3)
  • the present invention it is possible to provide a method capable of efficiently diffusing and infiltrating a creep reinforcing material into a heat resistant metal material member, and a heat resistant metal material member having enhanced creep strength by the method.
  • FIG. 1 is a diagram showing an outline of a method for diffusing and infiltrating a creep reinforcing material into a heat-resistant metal material member, which will be described as one embodiment of the present invention.
  • FIG. 2 is a diagram showing a cross-section of the schematic diagram of FIG. 1 described as an embodiment of the present invention.
  • the refractory metal material member 10 an existing (including repaired), unused, or deteriorated high-temperature pipe manufactured using a refractory metal material is taken as an example. Although it demonstrates, it is not limited to this, The refractory metal material member 10 is manufactured using a refractory metal material, such as an existing (including repaired), unused, or deteriorated turbine. Other high temperature members may be used.
  • the creep reinforcing material is diffused and penetrated into the heat resistant metal material member 10.
  • the creep reinforcing material is applied or sprayed on the surface of the heat resistant metal material member 10.
  • the heat-resistant coating member 30 is fixed by covering the portion 25 with the heat-resistant coating member 30 so as to be in contact with the portion 25 to which the creep reinforcing material is applied or sprayed.
  • the heat-resistant metal material member 10 covered with the heat-resistant coating member 30 is heated by the heater 40 at a temperature of 1000 ° C. or higher for a predetermined time.
  • the heat-resistant metal material member 10 coated or sprayed with the creep reinforcing material is covered with the heat-resistant coating member 30 and heated to a temperature of 1000 ° C. or higher, thereby thermally expanding in the direction toward the outer periphery.
  • a compressive force acts on the heat resistant metal material member to suppress thermal expansion in the direction toward the outer periphery of the heat resistant metal material member, and the creep reinforcing material on the surface of the heat resistant metal material member 10 is efficiently diffused and penetrated into the heat resistant metal material member 10. It becomes possible to make it.
  • a creep in the refractory metal material member 10 or its welded portion 20 is utilized by utilizing the thermal expansion force in the direction toward the outer periphery of the refractory metal material member 10.
  • the voids and cracks can be efficiently repaired, the heat resistant metal material member 10 and the welded portion 20 thereof can be regenerated, and the structure of the heat resistant metal material member 10 and the welded portion 20 can be recovered and the heat resistant metal material can be recovered.
  • the structure of the member 10 and the welded portion 20 can be strengthened. Therefore, the creep strength can be improved and the life can be extended more than the new material.
  • the structure of the refractory metal material member 10 and its welded portion 20 can be strengthened, so that the creep strength is improved and the life is longer than the new material. It can be stretched.
  • the creep reinforcing material is diffused and penetrated into the heat resistant metal material member 10 by applying or spraying the creep reinforcing material before applying or spraying the creep reinforcing material to the surface of the heat resistant metal material member 10.
  • the portion 25 may be etched or shot peened for etching.
  • the method of diffusing and infiltrating the creep reinforcing material into the heat resistant metal material member 10 is the method in which the heat resistant metal material member 10 covered with the heat resistant coating member 30 is heated to a temperature of 1000 ° C. or higher by the heater 40.
  • treatment such as stress relief or tension annealing may be performed. More specifically, after the heat-resistant metal material member 10 covered with the heat-resistant coating member 30 is heated to a temperature of 1000 ° C. or higher by the heater 40, it is once cooled to room temperature, and again a temperature of the A 1 transformation point or higher (preferably, It may be heated at 1000 ° C. + 10 to 100 ° C. for a predetermined time (eg, several hours to 24 hours).
  • the method of diffusing and infiltrating the creep reinforcing material into the heat resistant metal material member 10 includes: covering the heat resistant metal material member 10 coated or sprayed with the creep reinforcing material with the heat resistant coating member 30; In order to constrain thermal expansion outward (toward the end portion of the refractory metal material member 10) that occurs when heated, the portion heated by the heater 40 is sandwiched.
  • the part of the refractory metal material member 10 that is not heated by the heater 40 may be fixed by, for example, two clamps.
  • the heat-resistant metal material member 10 in the part heated with the heater 40 by the part which is not heated with the heater 40 is shown. Therefore, it is not necessary to fix the portion of the refractory metal material member 10 that is not heated by the heater 40 with a clamp or the like.
  • Examples of the refractory metal material of the member 10 include 0.3Mo steel, 0.5Mo steel, 0.5Cr-0.5Mo steel, 1Cr-0.2Mo steel, 1Cr-0.5Mo steel, 1.25Cr-0.5Mo steel, 2.25Cr-1Mo steel.
  • the creep strengthening material contains an element that has a melting point of 1000 ° C. or higher and that causes precipitation strengthening or solid solution strengthening by heating to a temperature of 1000 ° C. or higher, thereby enhancing the creep strength.
  • B boron
  • W tungsten
  • Cr chromium
  • Mo molybdenum
  • Nb niobium
  • V One or more elements selected from (vanadium), Hf (hafnium), Zr (zirconium), Ti (titanium), Cu (copper), and Co (cobalt) may be appropriately selected and included.
  • the powder of the creep reinforcement When applying the creep reinforcement to the surface of the refractory metal material member 10, the powder of the creep reinforcement may be used as it is, but the application of the creep reinforcement made into a liquid or paste form with a binder, a solvent, an adhesive, or the like. An agent may be used.
  • a known spraying method such as a plasma spraying method may be applied using a powder of the creep reinforcing material.
  • the application or spraying of the creep reinforcing material to the surface of the refractory metal material member 10 may be performed on the entire outer surface of the refractory metal material member 10 as in the present embodiment, or one of the refractory metal material members 10 may be applied. You may go to the surface of the part.
  • the heat-resistant covering member 30 can cover the portion 25 so as to be in contact with the portion 25 coated or sprayed with the creep reinforcement, and the heat-resistant metallic material member 10 in the portion 25 generated when heated to the heating temperature.
  • limit especially if it consists of a heat-resistant material which can suppress the thermal expansion of the direction to the outer periphery of this, and can hold
  • the heat-resistant covering member 30 has a thermal expansion coefficient comparable to that of the heat-resistant metal member 10 and is different from the heat-resistant metal material member 10 or has a higher thermal expansion coefficient than the heat-resistant metal material member 10. In order to suppress the thermal expansion of the heat resistant coating member 30 that occurs when heated to the heating temperature, the coefficient of thermal expansion at a temperature equal to or higher than the heating temperature is higher than that of the heat resistant metal material member 10.
  • the outer periphery of the heat resistant coating member 30 may be fixed by a low heat resistant material member, and the shape of the heat resistant coating member 30 may be maintained.
  • heat-resistant material of the heat-resistant coating member 30 examples include ceramics such as alumina, zirconia, aluminum nitride, silicon carbide, silicon nitride, cordierite, sialon, zircon, mullite, alloys such as Alloy903, Alloy909, and HRA929. Can do.
  • the heat-resistant covering member 30 has, for example, a shape such as a string, a plate, or a clamp.
  • the heat-resistant covering member 30 is fixed to the heat-resistant covering member 30 having a string shape or a plate shape by applying or spraying a creep reinforcing material.
  • the heat-resistant metal material member 10 may be wound around the outer periphery of the heat-resistant metal material member 10, or the clamp-shaped heat-resistant coating member 30 may be attached to the outer periphery of the heat-resistant metal material member 10 in the portion 25 coated or sprayed with the creep reinforcing material.
  • the heat-resistant covering member 30 in the shape of a plate or the like may be attached to the outer periphery of the heat-resistant metal material member 10 in the portion 25 where the creep reinforcing material is applied or sprayed by a fixture such as a clamp or a screw. Also good.
  • the heat-resistant covering member 30 is made of a metal fitting having two substantially semicircular arc cross-sectional shapes, and the inner surface of the metal fitting is made of a creep reinforcing material by a screw member 35 attached to the flange of the metal fitting.
  • the heat-resistant coating member 30 is fixed to the surface of the refractory metal material member 10 so as to be in contact with the outer periphery of the refractory metal material member 10 in the portion 25 coated or sprayed.
  • the screw member 35 is manufactured, for example, from the same material as the heat resistant coating member 30.
  • the heating temperature of the refractory metal material member 10 coated or sprayed with the creep reinforcing material is not particularly limited as long as it is a temperature of 1000 ° C. or higher.
  • the A 3 transformation is used among the refractory metal material and the creep reinforcing material of the member 10. is (preferably, 1000 °C + 10 ⁇ 100 °C ) highest component of a 3 transformation point or above the temperature point at a predetermined time (e.g., several hours to 24 hours) is preferably heated.
  • the high-frequency heater 40 that can be heated from the outer periphery of the heat-resistant metal material member 10 coated or sprayed with the creep reinforcing material is used, but the creep reinforcing material is coated or sprayed.
  • the heat-resistant metal material member 10 in the portion 25 can be heated.
  • a material obtained by diffusing and infiltrating a creep reinforcing material into the heat resistant metal material member 10 by the above method is useful as a heat resistant metal material member having enhanced creep strength because the creep strength is enhanced as described above. is there.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

A creep reinforcement material including at least one element selected from B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu, and Co is applied to or thermally sprayed on a surface of a heat-resistant metal member produced using a heat-resistant metal, a section having the creep reinforcement material applied thereto or thermally sprayed thereon is covered by a heat-resistant cover member and secured such that the heat-resistant cover member is in contact with said section, and the heat-resistance metal member covered by the heat-resistant cover member is heated to a temperature of at least 1000˚C. As a result, a compressive force acts upon the heat-resistant metal member which thermally expands in a direction towards an outer periphery, the thermal expansion of the heat-resistant metal member in the direction towards the outer periphery is restrained, and efficient diffusion and permeation, into the heat-resistant metal member, of the creep reinforcement material on the surface of the heat-resistant metal member, is rendered possible.

Description

耐熱金属材料部材に対するクリープ強化材の拡散浸透方法、及びクリープ強度を強化させた耐熱金属材料部材Diffusion / penetration method of creep reinforcing material to heat resistant metal material member, and heat resistant metal material member with enhanced creep strength
　本発明は、耐熱金属材料部材に対するクリープ強化材の拡散浸透方法、及び、その方法によってクリープ強度を強化させた耐熱金属材料部材に関する。 The present invention relates to a method of diffusing and infiltrating a creep reinforcing material into a refractory metal material member, and a refractory metal material member whose creep strength is enhanced by the method.
　従来、耐熱金属材料のクリープ特性を強化させる方法として、例えば、クリープ強度および／または疲労強度に関与する粒界強化材を塗布又は溶射して被膜を形成させ、所定時間、所定温度で加熱する方法（特許第３７９３９６６号公報）などが開発されている。 Conventionally, as a method for strengthening the creep characteristics of a refractory metal material, for example, a method of forming a film by applying or spraying a grain boundary reinforcing material involved in creep strength and / or fatigue strength, and heating at a predetermined temperature for a predetermined time (Japanese Patent No. 3793966) has been developed.
　本発明は、耐熱金属材料を用いて製造された部材（以下、「耐熱金属材料部材」と称する。）の内部に、クリープ強度を強化させる材料（以下、「クリープ強化材」と称する。）を効率よく拡散浸透させることが可能な方法、及びその方法によりクリープ強度を強化させた耐熱金属材料部材を提供することを目的とする。 In the present invention, a material (hereinafter referred to as “creep reinforcement”) that enhances the creep strength inside a member manufactured using a heat resistant metal material (hereinafter referred to as “heat resistant metal material member”). It is an object of the present invention to provide a method capable of efficiently diffusing and penetrating, and a refractory metal material member having enhanced creep strength by the method.
　上記課題を解決するために、本発明に係る耐熱金属材料部材に対するクリープ強化材の拡散浸透方法及びその方法にクリープ強度を強化させた耐熱金属材料部材は、後述する構成を備える。より具体的には、本発明は、
(1) 耐熱金属材料部材の表面にクリープ強化材を塗布又は溶射し、前記クリープ強化材を塗布又は溶射した部分に接するように、該部分を耐熱被覆部材で覆って固定し、前記耐熱被覆部材で覆った前記耐熱金属材料部材を１０００℃以上の温度に加熱することを含み、前記クリープ強化材は、Ｂ、Ｗ、Ｃｒ、Ｍｏ、Ｎｂ、Ｖ、Ｈｆ、Ｚｒ、Ｔｉ、Ｃｕ及びＣｏから選択された１又は複数の元素を含有するものであることを特徴とする耐熱金属材料部材に対するクリープ強化材の拡散浸透方法；
(2) 前記耐熱被覆部材で覆った前記耐熱金属材料部材を１０００℃以上の温度に加熱した後、冷却し、再度、Ａ１変態点以上の温度に加熱することを特徴とする上記(1)に記載の方法；
(3) 耐熱金属材料部材の表面にクリープ強化材を塗布又は溶射し、前記クリープ強化材を塗布又は溶射した部分に接するように、該部分を耐熱被覆部材で覆って固定し、前記耐熱被覆部材で覆った前記耐熱金属材料部材を１０００℃以上の温度に加熱することによって得られ、前記クリープ強化材は、Ｂ、Ｗ、Ｃｒ、Ｍｏ、Ｎｂ、Ｖ、Ｈｆ、Ｚｒ、Ｔｉ、Ｃｕ及びＣｏから選択された１又は複数の元素を含有するものであることを特徴とするクリープ強度を強化させた耐熱金属材料部材；
(4) 前記耐熱被覆部材で覆った前記耐熱金属材料部材を１０００℃以上の温度に加熱した後、冷却し、再度、Ａ１変態点以上の温度に加熱することにより得られる上記(3)に記載の耐熱金属材料部材；
などである。 In order to solve the above-described problems, a creep reinforcing material diffusion / penetration method for a refractory metal material member according to the present invention and a refractory metal material member in which the creep strength is strengthened by the method include a configuration described later. More specifically, the present invention provides:
(1) Applying or spraying a creep reinforcing material to the surface of the heat resistant metal material member, and covering and fixing the portion with the heat resistant coating member so as to contact the portion where the creep reinforcing material is applied or sprayed, and the heat resistant coating member Heating the refractory metal material member covered with at a temperature of 1000 ° C. or more, and the creep reinforcement is selected from B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu and Co A method for diffusing and infiltrating a creep reinforcing material into a refractory metal material member, characterized by containing one or more of the elements as described above;
(2) said after a heat resistant member with said refractory metal material member covering heated to a temperature above 1000 ° C., cooled again, above, wherein the heating to a temperature of at least A 1 transformation point (1) The method described in;
(3) Applying or spraying a creep reinforcement on the surface of the heat-resistant metal material member, and covering and fixing the portion with a heat-resistant coating member so as to be in contact with the portion coated or sprayed with the creep reinforcement material, the heat-resistant coating member Obtained by heating the refractory metal material member covered with a temperature of 1000 ° C. or more, and the creep reinforcement is made of B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu and Co. A refractory metal material member with enhanced creep strength, characterized by containing one or more selected elements;
(4) after heating the said refractory metal material member covered with a heat resistant member to a temperature above 1000 ° C., cooled again to the obtained by heating to a temperature above the A 1 transformation point (3) The heat-resistant metal material member according to the description;
Etc.
　本発明によれば、耐熱金属材料部材の内部にクリープ強化材を効率よく拡散浸透させることが可能な方法、及びその方法によりクリープ強度を強化させた耐熱金属材料部材を提供することができる。 According to the present invention, it is possible to provide a method capable of efficiently diffusing and infiltrating a creep reinforcing material into a heat resistant metal material member, and a heat resistant metal material member having enhanced creep strength by the method.
本発明の一実施形態として説明する、耐熱金属材料部材の内部にクリープ強化材を拡散浸透させる方法の概略を示す図である。It is a figure which shows the outline of the method of diffusing and osmosis | permeating a creep reinforcement in the inside of a heat-resistant metal material member demonstrated as one Embodiment of this invention. 本発明の一実施形態として説明する図１の概略図の断面を示す図である。It is a figure which shows the cross section of the schematic of FIG. 1 demonstrated as one Embodiment of this invention.
　以下、本発明の好ましい実施形態につき、添付図面を参照して詳細に説明する。なお、本発明の目的、特徴、利点、及びそのアイデアは、本明細書の記載により、当業者には明らかであり、本明細書の記載から、当業者であれば、容易に本発明を再現できる。以下に記載された発明の実施の形態及び図面等は、本発明の好ましい実施態様を示すものであり、例示又は説明のために示されているのであって、本発明をそれらに限定するものではない。本明細書で開示されている本発明の意図ならびに範囲内で、本明細書の記載に基づき、様々に修飾ができることは、当業者にとって明らかである。 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objects, features, advantages, and ideas of the present invention will be apparent to those skilled in the art from the description of the present specification, and those skilled in the art can easily reproduce the present invention from the description of the present specification. it can. DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments and drawings of the invention described below show preferred embodiments of the present invention and are shown for illustration or explanation, and are not intended to limit the present invention thereto. Absent. It will be apparent to those skilled in the art that various modifications can be made based on the description of the present specification within the spirit and scope of the present invention disclosed herein.
　図１は、本発明の一実施形態として説明する、耐熱金属材料部材の内部にクリープ強化材を拡散浸透させる方法の概略を示す図である。図２は、本発明の一実施形態として説明する図１の概略図の断面を示す図である。なお、本実施の形態においては、耐熱金属材料部材１０として、耐熱金属材料を用いて製造された、既設（補修されたものを含む）若しくは未使用の、又は劣化した高温配管を例に挙げて説明するが、これに限定されるものではなく、耐熱金属材料部材１０は、耐熱金属材料を用いて製造された、既設（補修されたものを含む）若しくは未使用の、又は劣化したタービン等の他の高温用部材などであってもかまわない。 FIG. 1 is a diagram showing an outline of a method for diffusing and infiltrating a creep reinforcing material into a heat-resistant metal material member, which will be described as one embodiment of the present invention. FIG. 2 is a diagram showing a cross-section of the schematic diagram of FIG. 1 described as an embodiment of the present invention. In the present embodiment, as the refractory metal material member 10, an existing (including repaired), unused, or deteriorated high-temperature pipe manufactured using a refractory metal material is taken as an example. Although it demonstrates, it is not limited to this, The refractory metal material member 10 is manufactured using a refractory metal material, such as an existing (including repaired), unused, or deteriorated turbine. Other high temperature members may be used.
　図１及び図２に示すように、本発明に係る、耐熱金属材料部材１０の内部にクリープ強化材を拡散浸透させる方法は、まず、耐熱金属材料部材１０の表面にクリープ強化材を塗布又は溶射する。その後、クリープ強化材を塗布又は溶射した部分２５に接するように、該部分２５を耐熱被覆部材３０で覆って耐熱被覆部材３０を固定する。続いて、耐熱被覆部材３０で覆った耐熱金属材料部材１０をヒーター４０によって１０００℃以上の温度で所定時間加熱する。 As shown in FIGS. 1 and 2, according to the method of the present invention, the creep reinforcing material is diffused and penetrated into the heat resistant metal material member 10. First, the creep reinforcing material is applied or sprayed on the surface of the heat resistant metal material member 10. To do. Thereafter, the heat-resistant coating member 30 is fixed by covering the portion 25 with the heat-resistant coating member 30 so as to be in contact with the portion 25 to which the creep reinforcing material is applied or sprayed. Subsequently, the heat-resistant metal material member 10 covered with the heat-resistant coating member 30 is heated by the heater 40 at a temperature of 1000 ° C. or higher for a predetermined time.
　以上のように、クリープ強化材を塗布又は溶射した耐熱金属材料部材１０を、耐熱被覆部材３０で覆って１０００℃以上の温度に加熱することにより、外周への方向に熱膨張する耐熱金属材料部材に対して圧縮力が働いて、耐熱金属材料部材の外周への方向の熱膨張を抑制するとともに、耐熱金属材料部材１０の表面におけるクリープ強化材を耐熱金属材料部材１０の内部に効率よく拡散浸透させることが可能となる。従って、耐熱金属材料部材１０が劣化部材あるいは既設部材である場合には、耐熱金属材料部材１０の外周への方向の熱膨張力を利用して、耐熱金属材料部材１０やその溶接部２０におけるクリープボイドや亀裂を効率よく補修し、耐熱金属材料部材１０やその溶接部２０の再生を図ることができ、さらには、耐熱金属材料部材１０やその溶接部２０の組織を回復させるとともに、耐熱金属材料部材１０やその溶接部２０の組織強化を図ることができる。もって、クリープ強度を向上させて新材以上に寿命を延伸させることが可能となる。一方、耐熱金属材料部材１０が未使用部材である場合には、耐熱金属材料部材１０やその溶接部２０の組織強化を図ることができ、もって、クリープ強度を向上させて新材以上に寿命を延伸させることが可能となる。 As described above, the heat-resistant metal material member 10 coated or sprayed with the creep reinforcing material is covered with the heat-resistant coating member 30 and heated to a temperature of 1000 ° C. or higher, thereby thermally expanding in the direction toward the outer periphery. A compressive force acts on the heat resistant metal material member to suppress thermal expansion in the direction toward the outer periphery of the heat resistant metal material member, and the creep reinforcing material on the surface of the heat resistant metal material member 10 is efficiently diffused and penetrated into the heat resistant metal material member 10. It becomes possible to make it. Therefore, when the refractory metal material member 10 is a deteriorated member or an existing member, a creep in the refractory metal material member 10 or its welded portion 20 is utilized by utilizing the thermal expansion force in the direction toward the outer periphery of the refractory metal material member 10. The voids and cracks can be efficiently repaired, the heat resistant metal material member 10 and the welded portion 20 thereof can be regenerated, and the structure of the heat resistant metal material member 10 and the welded portion 20 can be recovered and the heat resistant metal material can be recovered. The structure of the member 10 and the welded portion 20 can be strengthened. Therefore, the creep strength can be improved and the life can be extended more than the new material. On the other hand, when the refractory metal material member 10 is an unused member, the structure of the refractory metal material member 10 and its welded portion 20 can be strengthened, so that the creep strength is improved and the life is longer than the new material. It can be stretched.
　本発明に係る、耐熱金属材料部材１０の内部にクリープ強化材を拡散浸透させる方法は、耐熱金属材料部材１０の表面にクリープ強化材を塗布又は溶射する前に、クリープ強化材を塗布又は溶射する部分２５に対してエッチング処理、又はショットピーニングを施してエッチング処理を行うこととしてもよい。これらの処理により、耐熱金属材料部材１０の表層に対して塑性変形による加工硬化を行ったり、耐熱金属材料部材１０の表面に圧縮残留応力を与えたり、耐熱金属材料部材１０の表面の酸化膜を除去したりすることが可能となる。 According to the present invention, the creep reinforcing material is diffused and penetrated into the heat resistant metal material member 10 by applying or spraying the creep reinforcing material before applying or spraying the creep reinforcing material to the surface of the heat resistant metal material member 10. The portion 25 may be etched or shot peened for etching. By these processes, work hardening by plastic deformation is performed on the surface layer of the refractory metal material member 10, compressive residual stress is applied to the surface of the refractory metal material member 10, or an oxide film on the surface of the refractory metal material member 10 is formed. Or it can be removed.
　また、本発明に係る、耐熱金属材料部材１０の内部にクリープ強化材を拡散浸透させる方法は、耐熱被覆部材３０で覆った耐熱金属材料部材１０をヒーター４０によって１０００℃以上の温度に加熱した後、残留応力を除去（低減）するためにストレスリリーフやテンションアニールなどの処理を行ってもよい。より具体的には、耐熱被覆部材３０で覆った耐熱金属材料部材１０をヒーター４０によって１０００℃以上の温度に加熱した後に、一旦常温まで冷却し、再度Ａ１変態点以上の温度（好ましくは、１０００℃＋１０～１００℃）で所定時間（例えば、数時間～２４時間程度）加熱することとしてもよい。 Further, the method of diffusing and infiltrating the creep reinforcing material into the heat resistant metal material member 10 according to the present invention is the method in which the heat resistant metal material member 10 covered with the heat resistant coating member 30 is heated to a temperature of 1000 ° C. or higher by the heater 40. In order to remove (reduce) residual stress, treatment such as stress relief or tension annealing may be performed. More specifically, after the heat-resistant metal material member 10 covered with the heat-resistant coating member 30 is heated to a temperature of 1000 ° C. or higher by the heater 40, it is once cooled to room temperature, and again a temperature of the A 1 transformation point or higher (preferably, It may be heated at 1000 ° C. + 10 to 100 ° C. for a predetermined time (eg, several hours to 24 hours).
　さらに、本発明に係る、耐熱金属材料部材１０の内部にクリープ強化材を拡散浸透させる方法は、クリープ強化材を塗布又は溶射した耐熱金属材料部材１０を、耐熱被覆部材３０で覆ってヒーター４０により加熱した際に生じる、耐熱金属材料部材１０の長手方向に対して外向き（耐熱金属材料部材１０の端部方向）への熱膨張を拘束するために、ヒーター４０によって加熱している部分を挟むようにして、ヒーター４０で加熱していない部分の耐熱金属材料部材１０を、例えば、２つのクランプなどによって固定してもよい。　
　なお、耐熱金属材料部材１０の全体に対して、ヒーター４０によって加熱する部分が小さい場合には、ヒーター４０によって加熱されていない部分によって、ヒーター４０で加熱している部分における、耐熱金属材料部材１０の長手方向に対して外向きへの熱膨張が拘束されるため、ヒーター４０で加熱していない部分の耐熱金属材料部材１０をクランプ等によって固定する必要はない。 Further, according to the present invention, the method of diffusing and infiltrating the creep reinforcing material into the heat resistant metal material member 10 includes: covering the heat resistant metal material member 10 coated or sprayed with the creep reinforcing material with the heat resistant coating member 30; In order to constrain thermal expansion outward (toward the end portion of the refractory metal material member 10) that occurs when heated, the portion heated by the heater 40 is sandwiched. Thus, the part of the refractory metal material member 10 that is not heated by the heater 40 may be fixed by, for example, two clamps.
In addition, when the part heated with the heater 40 is small with respect to the whole heat-resistant metal material member 10, the heat-resistant metal material member 10 in the part heated with the heater 40 by the part which is not heated with the heater 40 is shown. Therefore, it is not necessary to fix the portion of the refractory metal material member 10 that is not heated by the heater 40 with a clamp or the like.
　部材１０の耐熱金属材料としては、例えば、0.3Mo鋼、0.5Mo鋼、0.5Cr-0.5Mo鋼、1Cr-0.2Mo鋼、1Cr-0.5Mo鋼、1.25Cr-0.5Mo鋼、2.25Cr-1Mo鋼、5Cr-0.5Mo鋼、7Cr-0.5Mo鋼、9Cr-1Mo鋼、0.3Cr-Mo-V鋼、0.5Cr-Mo-V鋼、9Cr-Mo-V鋼、12Cr-Mo-V鋼、1Cr-1.25Mo-0.25V鋼、9Cr-1Mo-W鋼、SUS304、SUS304L、SUS316、SUS316L、SUS316TI、SUS317、SUS321、SUS347H、SUS310S、Super304、SUS904L、NCF600、NCF601、NCF800、NCF800H等を挙げることができるが、これらに限定されるものではなく、火力・原子力発電ユニットその他の高温プラントで採用されている部材の公知材料を適用することができる。 Examples of the refractory metal material of the member 10 include 0.3Mo steel, 0.5Mo steel, 0.5Cr-0.5Mo steel, 1Cr-0.2Mo steel, 1Cr-0.5Mo steel, 1.25Cr-0.5Mo steel, 2.25Cr-1Mo steel. , 5Cr-0.5Mo steel, 7Cr-0.5Mo steel, 9Cr-1Mo steel, 0.3Cr-Mo-V steel, 0.5Cr-Mo-V steel, 9Cr-Mo-V steel, 12Cr-Mo-V steel, 1Cr- 1.25Mo-0.25V steel, 9Cr-1Mo-W steel, SUS304, SUS304L, SUS316, SUS316L, SUS316TI, SUS317, SUS321, SUS347H, SUS310S, Super304, SUS904L, NCF600, NCF601, NCF800, NCF800H, etc. However, the present invention is not limited to these, and known materials for members employed in thermal power / nuclear power generation units and other high-temperature plants can be applied.
　クリープ強化材としては、融点が１０００℃以上であって、１０００℃以上の温度に加熱することにより析出強化や固溶強化を生じさせ、もってクリープ強度を強化させることが可能な元素を含むものであれば特に制限されるものではないが、耐熱金属材料部材１０の素材に応じて、例えば、Ｂ（ホウ素）、Ｗ（タングステン）、Ｃｒ（クロム）、Ｍｏ（モリブデン）、Ｎｂ（ニオブ）、Ｖ（バナジウム）、Ｈｆ（ハフニウム）、Ｚｒ（ジルコニウム）、Ｔｉ（チタン）、Ｃｕ（銅）及びＣｏ（コバルト）から選択された１又は複数の元素を適宜選択して含ませるようにしてもよい。クリープ強化材を耐熱金属材料部材１０の表面に塗布する場合には、クリープ強化材の粉末をそのまま用いてもよいが、バインダー、溶媒、接着剤などによって液状又はペースト状にしたクリープ強化材の塗布剤を用いてもよい。また、クリープ強化材を耐熱金属材料部材１０の表面に溶射する場合には、例えば、クリープ強化材の粉末を用いてプラズマ溶射法などの公知の溶射方法を適用してもよい。なお、耐熱金属材料部材１０の表面に対するクリープ強化材の塗布又は溶射は、本実施の形態のように耐熱金属材料部材１０の外周全体の表面に行ってもよいし、耐熱金属材料部材１０の一部の表面に行ってもよい。 The creep strengthening material contains an element that has a melting point of 1000 ° C. or higher and that causes precipitation strengthening or solid solution strengthening by heating to a temperature of 1000 ° C. or higher, thereby enhancing the creep strength. Although there is no particular limitation as long as it is, depending on the material of the refractory metal material member 10, for example, B (boron), W (tungsten), Cr (chromium), Mo (molybdenum), Nb (niobium), V One or more elements selected from (vanadium), Hf (hafnium), Zr (zirconium), Ti (titanium), Cu (copper), and Co (cobalt) may be appropriately selected and included. When applying the creep reinforcement to the surface of the refractory metal material member 10, the powder of the creep reinforcement may be used as it is, but the application of the creep reinforcement made into a liquid or paste form with a binder, a solvent, an adhesive, or the like. An agent may be used. Moreover, when spraying the creep reinforcing material on the surface of the heat-resistant metal material member 10, for example, a known spraying method such as a plasma spraying method may be applied using a powder of the creep reinforcing material. The application or spraying of the creep reinforcing material to the surface of the refractory metal material member 10 may be performed on the entire outer surface of the refractory metal material member 10 as in the present embodiment, or one of the refractory metal material members 10 may be applied. You may go to the surface of the part.
　耐熱被覆部材３０は、クリープ強化材を塗布又は溶射した部分２５に接するようにして、該部分２５を覆うことができ、上記加熱温度に加熱した際に生じる、該部分２５における耐熱金属材料部材１０の外周への方向の熱膨張を抑制して、該部分２５における耐熱金属材料部材１０の形状をほぼ保持できる耐熱材料からなるものであれば特に制限されるものではないが、上記加熱温度以上の温度において、耐熱金属材料部材１０よりも熱膨張率が低い材料からなることが好ましい。なお、耐熱被覆部材３０が、耐熱金属部材１０に比べて熱膨張率が同程度であって耐熱金属材料部材１０とは異なる耐熱材料、又は耐熱金属材料部材１０よりも熱膨張率が高い耐熱材料から構成されている場合には、上記加熱温度に加熱した際に生じる耐熱被覆部材３０の熱膨張を抑制するために、上記加熱温度以上の温度における熱膨張率が耐熱金属材料部材１０に比べて低い耐熱材料部材によって耐熱被覆部材３０の外周を固定し、耐熱被覆部材３０の形状を保持してもよい。 The heat-resistant covering member 30 can cover the portion 25 so as to be in contact with the portion 25 coated or sprayed with the creep reinforcement, and the heat-resistant metallic material member 10 in the portion 25 generated when heated to the heating temperature. Although it will not restrict | limit especially if it consists of a heat-resistant material which can suppress the thermal expansion of the direction to the outer periphery of this, and can hold | maintain the shape of the heat-resistant metal material member 10 in this part 25 substantially, It is preferable to be made of a material having a lower coefficient of thermal expansion than the refractory metal material member 10 in terms of temperature. The heat-resistant covering member 30 has a thermal expansion coefficient comparable to that of the heat-resistant metal member 10 and is different from the heat-resistant metal material member 10 or has a higher thermal expansion coefficient than the heat-resistant metal material member 10. In order to suppress the thermal expansion of the heat resistant coating member 30 that occurs when heated to the heating temperature, the coefficient of thermal expansion at a temperature equal to or higher than the heating temperature is higher than that of the heat resistant metal material member 10. The outer periphery of the heat resistant coating member 30 may be fixed by a low heat resistant material member, and the shape of the heat resistant coating member 30 may be maintained.
　耐熱被覆部材３０の耐熱材料としては、例えば、アルミナ、ジルコニア、窒化アルミニウム、炭化ケイ素、窒化ケイ素、コーディエライト、サイアロン、ジルコン、ムライト等のセラミックス、Alloy903、Alloy909、HRA929等の合金などを挙げることができる。 Examples of the heat-resistant material of the heat-resistant coating member 30 include ceramics such as alumina, zirconia, aluminum nitride, silicon carbide, silicon nitride, cordierite, sialon, zircon, mullite, alloys such as Alloy903, Alloy909, and HRA929. Can do.
　耐熱被覆部材３０は、例えば、紐、プレート、クランプなどの形状をしており、これらの固定は、例えば、紐状やプレート状の耐熱被覆部材３０を、クリープ強化材を塗布又は溶射した部分２５における耐熱金属材料部材１０の外周に巻きつけることによって行ってもよいし、クランプ状の耐熱被覆部材３０を、クリープ強化材を塗布又は溶射した部分２５における耐熱金属材料部材１０の外周に取り付けることによって行ってもよいし、プレート等の形状をした耐熱被覆部材３０をクランプや螺子等の固定具によって、クリープ強化材を塗布又は溶射した部分２５における耐熱金属材料部材１０の外周に取り付けることによって行ってもよい。なお、本実施の形態においては、耐熱被覆部材３０は、２つの略半円弧断面形状を有する金具からなり、それらの金具のフランジに取り付けられる螺子部材３５によって、前記金具の内面が、クリープ強化材を塗布又は溶射した部分２５における耐熱金属材料部材１０の外周に接するようにして、耐熱被覆部材３０が耐熱金属材料部材１０の表面に固定されている。前記螺子部材３５は、例えば、耐熱被覆部材３０と同じ材料にて製造されている。 The heat-resistant covering member 30 has, for example, a shape such as a string, a plate, or a clamp. For example, the heat-resistant covering member 30 is fixed to the heat-resistant covering member 30 having a string shape or a plate shape by applying or spraying a creep reinforcing material. The heat-resistant metal material member 10 may be wound around the outer periphery of the heat-resistant metal material member 10, or the clamp-shaped heat-resistant coating member 30 may be attached to the outer periphery of the heat-resistant metal material member 10 in the portion 25 coated or sprayed with the creep reinforcing material. The heat-resistant covering member 30 in the shape of a plate or the like may be attached to the outer periphery of the heat-resistant metal material member 10 in the portion 25 where the creep reinforcing material is applied or sprayed by a fixture such as a clamp or a screw. Also good. In the present embodiment, the heat-resistant covering member 30 is made of a metal fitting having two substantially semicircular arc cross-sectional shapes, and the inner surface of the metal fitting is made of a creep reinforcing material by a screw member 35 attached to the flange of the metal fitting. The heat-resistant coating member 30 is fixed to the surface of the refractory metal material member 10 so as to be in contact with the outer periphery of the refractory metal material member 10 in the portion 25 coated or sprayed. The screw member 35 is manufactured, for example, from the same material as the heat resistant coating member 30.
　クリープ強化材を塗布又は溶射した耐熱金属材料部材１０の加熱温度は、１０００℃以上の温度であれば特に制限されるものではないが、部材１０の耐熱金属材料及びクリープ強化材のうちＡ３変態点が最も高い成分のＡ３変態点以上の温度（好ましくは、１０００℃＋１０～１００℃）で所定時間（例えば、数時間～２４時間程度）加熱することが好ましい。なお、本実施の形態においては、加熱装置として、クリープ強化材を塗布又は溶射した耐熱金属材料部材１０の外周から加熱可能な高周波加熱ヒーター４０を用いることとしているが、クリープ強化材を塗布又は溶射した部分２５における耐熱金属材料部材１０を加熱できるものであれば特に制限されるものではない。 The heating temperature of the refractory metal material member 10 coated or sprayed with the creep reinforcing material is not particularly limited as long as it is a temperature of 1000 ° C. or higher. However, among the refractory metal material and the creep reinforcing material of the member 10, the A 3 transformation is used. is (preferably, 1000 ℃ + 10 ~ 100 ℃ ) highest component of a 3 transformation point or above the temperature point at a predetermined time (e.g., several hours to 24 hours) is preferably heated. In the present embodiment, as the heating device, the high-frequency heater 40 that can be heated from the outer periphery of the heat-resistant metal material member 10 coated or sprayed with the creep reinforcing material is used, but the creep reinforcing material is coated or sprayed. There is no particular limitation as long as the heat-resistant metal material member 10 in the portion 25 can be heated.
　以上の方法によって、耐熱金属材料部材１０の内部にクリープ強化材を拡散浸透させたものは、上述のようにクリープ強度が強化されることから、クリープ強度を強化させた耐熱金属材料部材として有用である。 A material obtained by diffusing and infiltrating a creep reinforcing material into the heat resistant metal material member 10 by the above method is useful as a heat resistant metal material member having enhanced creep strength because the creep strength is enhanced as described above. is there.
１０　耐熱金属材料部材
２０　溶接部
２５　クリープ強化材を塗布又は溶射した部分
３０　耐熱被覆部材
３５　螺子部材
４０　高周波加熱ヒーター DESCRIPTION OF SYMBOLS 10 Heat-resistant metal material member 20 Welding part 25 The part which apply | coated or sprayed the creep reinforcement material 30 Heat-resistant coating member 35 Screw member 40 High frequency heater

Claims (4)

  1. 　耐熱金属材料部材の表面にクリープ強化材を塗布又は溶射し、
    　前記クリープ強化材を塗布又は溶射した部分に接するように、該部分を耐熱被覆部材で覆って固定し、
    　前記耐熱被覆部材で覆った前記耐熱金属材料部材を１０００℃以上の温度に加熱することを含み、
    　前記クリープ強化材は、Ｂ、Ｗ、Ｃｒ、Ｍｏ、Ｎｂ、Ｖ、Ｈｆ、Ｚｒ、Ｔｉ、Ｃｕ及びＣｏから選択された１又は複数の元素を含有するものであることを特徴とする耐熱金属材料部材に対するクリープ強化材の拡散浸透方法。     Apply or spray a creep reinforcement on the surface of the refractory metal material,
    Cover and fix the part with a heat-resistant coating member so as to be in contact with the part coated or sprayed with the creep reinforcement,
    Heating the heat-resistant metal material member covered with the heat-resistant coating member to a temperature of 1000 ° C. or higher,
    The creep reinforcing material contains one or more elements selected from B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu and Co, and is a refractory metal material A method for diffusing and infiltrating a creep reinforcement material into a member.
  2. 　前記耐熱被覆部材で覆った前記耐熱金属材料部材を１０００℃以上の温度に加熱した後、冷却し、再度、Ａ１変態点以上の温度に加熱することを特徴とする請求項１に記載の方法。 2. The method according to claim 1, wherein the heat-resistant metal material member covered with the heat-resistant coating member is heated to a temperature of 1000 ° C. or higher, then cooled, and again heated to a temperature of the A 1 transformation point or higher. .
  3. 　耐熱金属材料部材の表面にクリープ強化材を塗布又は溶射し、
    　前記クリープ強化材を塗布又は溶射した部分に接するように、該部分を耐熱被覆部材で覆って固定し、
    　前記耐熱被覆部材で覆った前記耐熱金属材料部材を１０００℃以上の温度に加熱することによって得られ、
    　前記クリープ強化材は、Ｂ、Ｗ、Ｃｒ、Ｍｏ、Ｎｂ、Ｖ、Ｈｆ、Ｚｒ、Ｔｉ、Ｃｕ及びＣｏから選択された１又は複数の元素を含有するものであることを特徴とするクリープ強度を強化させた耐熱金属材料部材。     Apply or spray a creep reinforcement on the surface of the refractory metal material,
    Cover and fix the part with a heat-resistant coating member so as to be in contact with the part coated or sprayed with the creep reinforcement,
    Obtained by heating the heat-resistant metal material member covered with the heat-resistant coating member to a temperature of 1000 ° C. or higher,
    The creep reinforcing material contains one or more elements selected from B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu and Co, and has a creep strength characterized by Reinforced heat-resistant metal material member.
  4. 　前記耐熱被覆部材で覆った前記耐熱金属材料部材を１０００℃以上の温度に加熱した後、冷却し、再度、Ａ１変態点以上の温度に加熱することにより得られる請求項３に記載の耐熱金属材料部材。 Wherein after heating the heat resistant member with said refractory metal material member which covers the temperature above 1000 ° C., cooled again, refractory metals according to claim 3 which is obtained by heating to a temperature above the A 1 transformation point Material member.
PCT/JP2013/075927 2013-09-25 2013-09-25 Method for diffusion coating heat-resistant metal member with creep reinforcement material, and creep-strength-enhanced heat-resistant metal member WO2015045038A1 (en)

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JP2015512426A JP5925958B2 (en) 2013-09-25 2013-09-25 Diffusion / penetration method of creep reinforcement for heat-resistant metal material member and method for producing heat-resistant metal material member with enhanced creep strength
EP13894771.8A EP3050997B1 (en) 2013-09-25 2013-09-25 Method for diffusion coating heat-resistant metal member with creep reinforcement material, and creep-strength-enhanced heat-resistant metal member
US15/022,948 US20160230262A1 (en) 2013-09-25 2013-09-25 Method for diffusing and permeating creep reinforcement material into heat-resistant metal member, and heat-resistant metal member with enhanced creep strength
PCT/JP2013/075927 WO2015045038A1 (en) 2013-09-25 2013-09-25 Method for diffusion coating heat-resistant metal member with creep reinforcement material, and creep-strength-enhanced heat-resistant metal member
CN201380079648.6A CN105555988A (en) 2013-09-25 2013-09-25 Method for diffusion coating heat-resistant metal member with creep reinforcement material, and creep-strength-enhanced heat-resistant metal member
PL13894771T PL3050997T3 (en) 2013-09-25 2013-09-25 Method for diffusion coating heat-resistant metal member with creep reinforcement material, and creep-strength-enhanced heat-resistant metal member
CA2924624A CA2924624C (en) 2013-09-25 2013-09-25 A method for diffusing and permeating creep reinforcement material into heat-resistant metal member, and heat-resistant metal member with enhanced creep strength
KR1020167006489A KR20160043033A (en) 2013-09-25 2013-09-25 Method for diffusion coating heat-resistant metal member with creep reinforcement material, and creep-strength-enhanced heat-resistant metal member

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