CA2924624C - A method for diffusing and permeating creep reinforcement material into heat-resistant metal member, and heat-resistant metal member with enhanced creep strength - Google Patents
A method for diffusing and permeating creep reinforcement material into heat-resistant metal member, and heat-resistant metal member with enhanced creep strength Download PDFInfo
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- CA2924624C CA2924624C CA2924624A CA2924624A CA2924624C CA 2924624 C CA2924624 C CA 2924624C CA 2924624 A CA2924624 A CA 2924624A CA 2924624 A CA2924624 A CA 2924624A CA 2924624 C CA2924624 C CA 2924624C
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- heat
- steel
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- resistant metal
- resistant
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 130
- 239000002184 metal Substances 0.000 title claims abstract description 130
- 239000000463 material Substances 0.000 title claims abstract description 67
- 230000002787 reinforcement Effects 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims description 31
- 229910052796 boron Inorganic materials 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 6
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 6
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 6
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 4
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 83
- 239000010959 steel Substances 0.000 claims description 83
- 238000010438 heat treatment Methods 0.000 claims description 24
- 239000000956 alloy Substances 0.000 claims description 19
- 229910045601 alloy Inorganic materials 0.000 claims description 19
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 7
- 230000009466 transformation Effects 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 5
- 229910052878 cordierite Inorganic materials 0.000 claims description 5
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 5
- -1 sialon Chemical compound 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 5
- 229910052845 zircon Inorganic materials 0.000 claims description 5
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 5
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052863 mullite Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 2
- 239000007769 metal material Substances 0.000 abstract description 6
- 230000000452 restraining effect Effects 0.000 abstract description 2
- 239000003779 heat-resistant material Substances 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- 239000011651 chromium Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 239000010955 niobium Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
Landscapes
- 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 containing one or a plurality of elements selected from B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu, and Co is coated or thermally sprayed onto a surface of a heat-resistant metal member manufactured using a heat-resistant metal material, and a section coated or thermally sprayed with the creep reinforcement material is covered by a heat-resistant covering member and secured so as to contact the section. The heat-resistant metal member covered by the heat-resistant covering member is heated to a temperature of 1000°C or greater, and thus compressive force accordingly acts on the heat-resistant metal member as it thermally expands in a direction toward the outer periphery, restraining thermal expansion of the heat-resistant metal member in the direction toward the outer periphery, and enabling the creep reinforcement material on the surface of the heat-resistant metal member to be efficiently diffused and permeated into the heat-resistant metal member.
Description
DESCRIPTION
Title of Invention: A METHOD FOR DIFFUSING AND PERMEATING
CREEP REINFORCEMENT MATERIAL INTO HEAT-RESISTANT METAL
MEMBER, AND HEAT-RESISTANT METAL MEMBER WITH ENHANCED CREEP
STRENGTH
Technical Field [0001]
The present invention relates to a method for diffusing and permeating a creep reinforcement material into a heat-resistant metal member, and to a heat-resistant metal member with creep strength enhanced by such a method.
Background Art
Title of Invention: A METHOD FOR DIFFUSING AND PERMEATING
CREEP REINFORCEMENT MATERIAL INTO HEAT-RESISTANT METAL
MEMBER, AND HEAT-RESISTANT METAL MEMBER WITH ENHANCED CREEP
STRENGTH
Technical Field [0001]
The present invention relates to a method for diffusing and permeating a creep reinforcement material into a heat-resistant metal member, and to a heat-resistant metal member with creep strength enhanced by such a method.
Background Art
[0002]
Hitherto, as a method for enhancing creep properties of a heat-resistant metal material, a method has been developed in which, for example, a grain boundary strengthening element that affects creep strength and/or fatigue strength is coated or thermally sprayed to forma film, and heated for a specific duration at a specific temperature (see Japanese Patent No.
3793966).
Summary of Invention
Hitherto, as a method for enhancing creep properties of a heat-resistant metal material, a method has been developed in which, for example, a grain boundary strengthening element that affects creep strength and/or fatigue strength is coated or thermally sprayed to forma film, and heated for a specific duration at a specific temperature (see Japanese Patent No.
3793966).
Summary of Invention
[0003]
An object of the present invention is to provide a method capable of efficiently diffusing and permeating a material that enhances creep strength (hereinafter referred to as a "creep reinforcement material") into a member manufactured using a heat-resistant metal material (hereinafter referred to as a "heat-resistant metal member"), and to provide a heat-resistant metal member with creep strength enhanced by such a method.
An object of the present invention is to provide a method capable of efficiently diffusing and permeating a material that enhances creep strength (hereinafter referred to as a "creep reinforcement material") into a member manufactured using a heat-resistant metal material (hereinafter referred to as a "heat-resistant metal member"), and to provide a heat-resistant metal member with creep strength enhanced by such a method.
[0004]
In view of the above problem, according to the present invention, a method for diffusing and permeating a creep reinforcement material into a heat-resistant metal member, and a heat-resistant metal member with creep strength enhanced by such a method, include the following configuration. More specifically, the present invention includes:
(1) a method for diffusing and permeating a creep reinforcement material into a heat-resistant metal member, the method comprising: coating or thermally spraying a creep reinforcement material onto a surface of a heat-resistant metal member;
covering, by a heat-resistant covering member, a section coated or thermally sprayed with the creep reinforcement material, and securing the heat-resistant covering member so as to contact the section; and heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000 C
or greater, wherein the creep reinforcement material contains B, W, Cr, Mo, Nb V, Hf, Zr, Ti, Cu, or Co, or any combination thereof, wherein the heat-resistant covering member is a member made from a material that is able to maintain a profile of the heat-resistant metal member at a heating temperature of the heat-resistant metal member and is different from the creep reinforcement material, wherein the heat-resistant metal member is made of 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-lMo steel, 5Cr-0.5Mo steel, 7Cr-0.5Mo steel, 90r-lMo 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-lMo-W steel, SUS304, SUS304L, SUS316, SUS316L, SUS316TI, SUS317, SUS321, SUS347H, SUS310S, Super304, SUS904L, NCF600, NCF601, NCF800, or NCF800H, and wherein the heat-resistant covering member is a ceramic or an alloy;
(2) the method described in (1), wherein the heat-resistant covering member is a ceramic comprising alumina, zirconia, aluminum nitride, silicon carbide, silicon nitride, cordierite, sialon, zircon or mullite:
(3) the method described in (1), wherein the heat-resistant covering member is an alloy comprising Alloy 903, Alloy 909 or HRA 929;
(4) the method described in (1) to (3) wherein, the heat-resistant metal member is made of metal containing steel as a main component, and after heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000 C or greater, the heat-resistant metal member covered by the heat-resistant covering member is cooled and re-heated to a temperature of an Al transformation point or greater;
In view of the above problem, according to the present invention, a method for diffusing and permeating a creep reinforcement material into a heat-resistant metal member, and a heat-resistant metal member with creep strength enhanced by such a method, include the following configuration. More specifically, the present invention includes:
(1) a method for diffusing and permeating a creep reinforcement material into a heat-resistant metal member, the method comprising: coating or thermally spraying a creep reinforcement material onto a surface of a heat-resistant metal member;
covering, by a heat-resistant covering member, a section coated or thermally sprayed with the creep reinforcement material, and securing the heat-resistant covering member so as to contact the section; and heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000 C
or greater, wherein the creep reinforcement material contains B, W, Cr, Mo, Nb V, Hf, Zr, Ti, Cu, or Co, or any combination thereof, wherein the heat-resistant covering member is a member made from a material that is able to maintain a profile of the heat-resistant metal member at a heating temperature of the heat-resistant metal member and is different from the creep reinforcement material, wherein the heat-resistant metal member is made of 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-lMo steel, 5Cr-0.5Mo steel, 7Cr-0.5Mo steel, 90r-lMo 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-lMo-W steel, SUS304, SUS304L, SUS316, SUS316L, SUS316TI, SUS317, SUS321, SUS347H, SUS310S, Super304, SUS904L, NCF600, NCF601, NCF800, or NCF800H, and wherein the heat-resistant covering member is a ceramic or an alloy;
(2) the method described in (1), wherein the heat-resistant covering member is a ceramic comprising alumina, zirconia, aluminum nitride, silicon carbide, silicon nitride, cordierite, sialon, zircon or mullite:
(3) the method described in (1), wherein the heat-resistant covering member is an alloy comprising Alloy 903, Alloy 909 or HRA 929;
(4) the method described in (1) to (3) wherein, the heat-resistant metal member is made of metal containing steel as a main component, and after heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000 C or greater, the heat-resistant metal member covered by the heat-resistant covering member is cooled and re-heated to a temperature of an Al transformation point or greater;
(5) a heat-resistant metal member with enhanced creep strength, the heat-resistant metal member being obtained by coating or thermally spraying a creep reinforcement material onto a surface of a heat-resistant metal member, covering, by a heat-resistant covering member, a section coated or thermally sprayed with the creep reinforcement material, and securing the heat-resistant covering member so as to contact the section, and heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000 C or greater; and the creep reinforcement material containing B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu, or Co, or any combination thereof wherein the heat-resistant covering member is a member made from a material that is able to maintain a profile of the heat-resistant metal member at a heating temperature of the heat-resistant metal member and is different from the creep reinforcement material, wherein the heat-resistant metal member is made of 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-lMo steel, 5Cr-0.5Mo steel, 7Cr-0.5Mosteel, 9Cr-lMo 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-lMo-W steel, SUS304, SUS304L, SUS316, SUS3161,, SUS316TI, SUS317, SUS321, SUS347H, SUS310S, Super304, SUS904L, NCF600, 3a NCF601, NCF800, or NCF800H, and wherein the heat-resistant covering member is a ceramic or an alloy;
steel, 9Cr-Mo-V steel, 12Cr-Mo-V steel, 1Cr-1.25Mo-0.25V steel, 9Cr-lMo-W steel, SUS304, SUS304L, SUS316, SUS3161,, SUS316TI, SUS317, SUS321, SUS347H, SUS310S, Super304, SUS904L, NCF600, 3a NCF601, NCF800, or NCF800H, and wherein the heat-resistant covering member is a ceramic or an alloy;
(6) the heat-resistant metal member described in (5), wherein the heat-resistant covering member is a ceramic comprising alumina, zirconia, aluminum nitride, silicon carbide, silicon nitride, cordierite, sialon, zircon or mullite;
(7) the heat-resistant metal member described in (5), wherein the heat-resistant covering member is an alloy comprising Alloy 903, Alloy 909 or HRA 929; and
(8) the heat-resistant metal member described in (5) to (7) wherein the heat-resistant metal member is made of metal containing steel as a main component, and the heat-resistant metal member is obtained by, after heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000 C or greater, cooling and re-heating to a temperature of an AI transformation point or greater.
[0005]
The present invention is directed to a method capable of efficiently diffusing and permeating a creep reinforcement material into a heat-resistant metal member, and provision of a heat-resistant metal member with creep strength enhanced by such a method.
Brief Description of Drawings [0006]
Fig. 1 is a schematic diagram illustrating a method to diffuse and permeate a creep reinforcement material into a heat-resistant metal member, to explain an embodiment of the present invention.
Fig. 2 is a schematic cross-section illustrating a cross-section of Fig. 1, to explain an embodiment of the present invention.
Description of Embodiments [0007]
Detailed explanation follows regarding preferable embodiments of the present invention, with reference to the appended drawings. Note that the objects, features, advantages, and ideas of the present invention will be clear to a person of ordinary skill in the art from the content of the present specification, and a person of ordinary skill in the art would easily be able to reproduce the present invention from the present specification. The following embodiments, drawings, and the like of the present invention illustrate preferable embodiments of the present invention, and are there to give examples and for the purpose of explanation;
however, the present invention is not limited thereto. It will be obvious to a person of ordinary skill in the art that various modifications may be implemented based on the content of the present specification within the intention and scope of the present invention disclosed in the present specification.
[0008]
Fig. 1 is a schematic diagram illustrating a method for diffusing and permeating a creep reinforcement material into a heat-resistant metal member, to explain an embodiment of the present invention. Fig. 2 is a schematic cross-section illustrating a cross-section of Fig. 1, to explain an embodiment of the present invention. In the present embodiment, explanation is of an example of a case in which an already installed (including repaired cases thereof) or unused, or a degraded, high temperature pipe manufactured using a heat-resistant metal material, is employed as a heat-resistant metal member 10, however, there is no limitation thereto. The heat-resistant metal member 10 may be another high temperature member manufactured using a heat-resistant metal material, such as an already installed (including repaired cases thereof) or unused, or a degraded, turbine.
[0005]
The present invention is directed to a method capable of efficiently diffusing and permeating a creep reinforcement material into a heat-resistant metal member, and provision of a heat-resistant metal member with creep strength enhanced by such a method.
Brief Description of Drawings [0006]
Fig. 1 is a schematic diagram illustrating a method to diffuse and permeate a creep reinforcement material into a heat-resistant metal member, to explain an embodiment of the present invention.
Fig. 2 is a schematic cross-section illustrating a cross-section of Fig. 1, to explain an embodiment of the present invention.
Description of Embodiments [0007]
Detailed explanation follows regarding preferable embodiments of the present invention, with reference to the appended drawings. Note that the objects, features, advantages, and ideas of the present invention will be clear to a person of ordinary skill in the art from the content of the present specification, and a person of ordinary skill in the art would easily be able to reproduce the present invention from the present specification. The following embodiments, drawings, and the like of the present invention illustrate preferable embodiments of the present invention, and are there to give examples and for the purpose of explanation;
however, the present invention is not limited thereto. It will be obvious to a person of ordinary skill in the art that various modifications may be implemented based on the content of the present specification within the intention and scope of the present invention disclosed in the present specification.
[0008]
Fig. 1 is a schematic diagram illustrating a method for diffusing and permeating a creep reinforcement material into a heat-resistant metal member, to explain an embodiment of the present invention. Fig. 2 is a schematic cross-section illustrating a cross-section of Fig. 1, to explain an embodiment of the present invention. In the present embodiment, explanation is of an example of a case in which an already installed (including repaired cases thereof) or unused, or a degraded, high temperature pipe manufactured using a heat-resistant metal material, is employed as a heat-resistant metal member 10, however, there is no limitation thereto. The heat-resistant metal member 10 may be another high temperature member manufactured using a heat-resistant metal material, such as an already installed (including repaired cases thereof) or unused, or a degraded, turbine.
[0009]
As illustrated in Fig. 1 and Fig. 2, in the method according to the present invention for diffusing and permeating a creep reinforcement material into a heat-resistant metal member 10, 5 first the creep reinforcement material is coated or thermally sprayed onto a surface of the heat-resistant metal member 10.
Then a section 25 onto which the creep reinforcement material has been coated or thermally sprayed is covered by a heat-resistant covering member 30, and the heat-resistant covering member 30 is secured so as to make contact with the section 25. Next, the heat-resistant metal member 10 covered by the heat-resistant covering member 30 is heated for a specific duration at a temperature of 1000 C or greater using a heater 40.
As illustrated in Fig. 1 and Fig. 2, in the method according to the present invention for diffusing and permeating a creep reinforcement material into a heat-resistant metal member 10, 5 first the creep reinforcement material is coated or thermally sprayed onto a surface of the heat-resistant metal member 10.
Then a section 25 onto which the creep reinforcement material has been coated or thermally sprayed is covered by a heat-resistant covering member 30, and the heat-resistant covering member 30 is secured so as to make contact with the section 25. Next, the heat-resistant metal member 10 covered by the heat-resistant covering member 30 is heated for a specific duration at a temperature of 1000 C or greater using a heater 40.
[0010]
As mentioned above, the heat-resistant metal member 10 coated or thermally sprayed with the creep reinforcement material is covered by the heat-resistant covering member 30 and is heated to a temperature of 1000 C or greater, and thus compressive force acts on the heat-resistant metal member as it thermally expands in a direction toward an outer periphery, restraining thermal expansion of the heat-resistant metal member in the direction toward the outer periphery, and enabling the creep reinforcement material on the surface of the heat-resistant metal member 10 to be efficiently diffused and permeated into the heat-resistant metal member 10. Thus, in cases in which the heat-resistant metal member 10 is a degraded member or an already installed member, by utilizing the force from thermal expansion in the direction toward the outer periphery of the heat-resistant metal member 10, creep voids and cracks in the heat-resistant metal member 10 and a weld 20 thereof are efficiently repaired, enabling regeneration of the heat-resistant metal member 10 and the weld 20 thereof to be achieved. Moreover, structural strengthening of the heat-resistant metal member 10 and the weld 20 thereof can be achieved accompanying restoration of the structure of the heat-resistant metal member 10 and the weld 20 thereof. The creep strength is accordingly enhanced, enabling the lifespan to be extended to that of a new member or greater. On the other hand, in cases in which the heat-resistant metal member 10 is an unused member, structural strengthening of the heat-resistant metal member and the weld 20 thereof can be achieved, thereby enhancing 10 the creep strength and enabling the lifespan to be extended to that of a new member or greater.
As mentioned above, the heat-resistant metal member 10 coated or thermally sprayed with the creep reinforcement material is covered by the heat-resistant covering member 30 and is heated to a temperature of 1000 C or greater, and thus compressive force acts on the heat-resistant metal member as it thermally expands in a direction toward an outer periphery, restraining thermal expansion of the heat-resistant metal member in the direction toward the outer periphery, and enabling the creep reinforcement material on the surface of the heat-resistant metal member 10 to be efficiently diffused and permeated into the heat-resistant metal member 10. Thus, in cases in which the heat-resistant metal member 10 is a degraded member or an already installed member, by utilizing the force from thermal expansion in the direction toward the outer periphery of the heat-resistant metal member 10, creep voids and cracks in the heat-resistant metal member 10 and a weld 20 thereof are efficiently repaired, enabling regeneration of the heat-resistant metal member 10 and the weld 20 thereof to be achieved. Moreover, structural strengthening of the heat-resistant metal member 10 and the weld 20 thereof can be achieved accompanying restoration of the structure of the heat-resistant metal member 10 and the weld 20 thereof. The creep strength is accordingly enhanced, enabling the lifespan to be extended to that of a new member or greater. On the other hand, in cases in which the heat-resistant metal member 10 is an unused member, structural strengthening of the heat-resistant metal member and the weld 20 thereof can be achieved, thereby enhancing 10 the creep strength and enabling the lifespan to be extended to that of a new member or greater.
[0011]
In the method for diffusing and permeating a creep reinforcement material into the heat-resistant metal member 10 according to the present invention, etching treatment, or shot peening and etching treatment, may be performed on the section 25 to be coated or thermally sprayed with the creep reinforcement material prior to coating or thermally spraying the creep reinforcement material on the surface of the heat-resistant metal member 10. Such proces sing enables work hardening of the surface layer of the heat-resistant metal member 10 to be performed by plastic deformation, enables residual compressive stress to be imparted to the surface of the heat-resistant metal member 10, and enables any oxidized film on the surface of the heat-resistant metal member 10 to be removed.
In the method for diffusing and permeating a creep reinforcement material into the heat-resistant metal member 10 according to the present invention, etching treatment, or shot peening and etching treatment, may be performed on the section 25 to be coated or thermally sprayed with the creep reinforcement material prior to coating or thermally spraying the creep reinforcement material on the surface of the heat-resistant metal member 10. Such proces sing enables work hardening of the surface layer of the heat-resistant metal member 10 to be performed by plastic deformation, enables residual compressive stress to be imparted to the surface of the heat-resistant metal member 10, and enables any oxidized film on the surface of the heat-resistant metal member 10 to be removed.
[0012]
In the method for diffusing and permeating a creep reinforcement material into the heat-resistant metal member 10 according to the present invention, processing to remove (reduce) residual stress, such as stress relief or tension annealing processing, may be performed after the heat-resistant metal member 10 covered by the heat-resistant covering member 30 has been heated to a temperature of 1000 C
or greater using the heater 40. More specifically, after the heat-resistant metal member 10 covered by the heat-resistant covering member 30 has been heated to a temperature of 1000 C
or greater using the heater 40, the heat-resistant metal member 10 may be first cooled to room temperature, then reheated to a temperature of an Ai transformation point or greater (preferably from 10 C to 100 C above 1000 C) for a specific duration (for example, from approximately several hours to approximately 24 hours).
In the method for diffusing and permeating a creep reinforcement material into the heat-resistant metal member 10 according to the present invention, processing to remove (reduce) residual stress, such as stress relief or tension annealing processing, may be performed after the heat-resistant metal member 10 covered by the heat-resistant covering member 30 has been heated to a temperature of 1000 C
or greater using the heater 40. More specifically, after the heat-resistant metal member 10 covered by the heat-resistant covering member 30 has been heated to a temperature of 1000 C
or greater using the heater 40, the heat-resistant metal member 10 may be first cooled to room temperature, then reheated to a temperature of an Ai transformation point or greater (preferably from 10 C to 100 C above 1000 C) for a specific duration (for example, from approximately several hours to approximately 24 hours).
[0013]
Moreover, in the method to diffuse and permeate a creep reinforcement material into the heat-resistant metal member 10 according to the present invention, in order to restrict thermal expansion of the heat-resistant metal member 10 toward the outside in the length direction thereof (in directions toward the ends of the heat-resistant metal member 10) occurring when the heat-resistant metal member 10, which has been coated or thermally sprayed with the creep reinforcement material, is covered by the heat-resistant covering member 30 and heated by the heater 40, the heat-resistant metal member 10 may be secured in sections not being heated by the heater 40, by, for example, two clamps so as to sandwich the section being heated by the heater 40.
In cases in which the section heated by the heater 40 is small compared to the overall heat-resistant metal member 10, there is no need to secure the heat-resistant metal member 10 in sections not being heated by the heater 40 with clamps or the like, since thermal expansion toward the outside in the length direction of the heat-resistant metal member 10 in the section being heated by the heater 40 is restricted by the sections not being heated by the heater 40.
Moreover, in the method to diffuse and permeate a creep reinforcement material into the heat-resistant metal member 10 according to the present invention, in order to restrict thermal expansion of the heat-resistant metal member 10 toward the outside in the length direction thereof (in directions toward the ends of the heat-resistant metal member 10) occurring when the heat-resistant metal member 10, which has been coated or thermally sprayed with the creep reinforcement material, is covered by the heat-resistant covering member 30 and heated by the heater 40, the heat-resistant metal member 10 may be secured in sections not being heated by the heater 40, by, for example, two clamps so as to sandwich the section being heated by the heater 40.
In cases in which the section heated by the heater 40 is small compared to the overall heat-resistant metal member 10, there is no need to secure the heat-resistant metal member 10 in sections not being heated by the heater 40 with clamps or the like, since thermal expansion toward the outside in the length direction of the heat-resistant metal member 10 in the section being heated by the heater 40 is restricted by the sections not being heated by the heater 40.
[0014]
Examples of the heat-resistant metal of the member 10 include 0.3Mo steel, 0.5Mo steel, 0.5Cr-0.5Mo steel, = CA 02924624 2016-03-17 1Cr-0.2Mo steel, 1Cr-0.5Mo steel, 1.25Cr-0.5Mo steel, 2.25Cr-lMo steel, 5Cr-0.5Mo steel, 7Cr-0.5Mo steel, 9Cr-lMo 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, 90r-lMo-W steel, SUS304, SUS304L, SUS316, SUS316L, SUS316TI, SUS317, SUS321, SUS347H, SUS310S, Super304, SUS904L, NCF600, NCF601, NCF800, and NCF800H; however, there is no limitation thereto. Any known material used for members employed in thermal or nuclear power generation units or other high temperature plants may be employed as the heat-resistant metal for the member 10.
Examples of the heat-resistant metal of the member 10 include 0.3Mo steel, 0.5Mo steel, 0.5Cr-0.5Mo steel, = CA 02924624 2016-03-17 1Cr-0.2Mo steel, 1Cr-0.5Mo steel, 1.25Cr-0.5Mo steel, 2.25Cr-lMo steel, 5Cr-0.5Mo steel, 7Cr-0.5Mo steel, 9Cr-lMo 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, 90r-lMo-W steel, SUS304, SUS304L, SUS316, SUS316L, SUS316TI, SUS317, SUS321, SUS347H, SUS310S, Super304, SUS904L, NCF600, NCF601, NCF800, and NCF800H; however, there is no limitation thereto. Any known material used for members employed in thermal or nuclear power generation units or other high temperature plants may be employed as the heat-resistant metal for the member 10.
[0015]
There are no particular limitations to the creep reinforcement material, as long as it contains an element which has a melting point of 1000 C or greater and in which precipitation strengthening and solid solution strengthening occur upon heating to a temperature of 1000 C or greater so as to enable creep strength to be enhanced. Thus, for example, according to the substance of the heat-resistant metal member 10, the creep reinforcement material may contain any one or a plurality of elements appropriately selected from B (boron) , W (tungsten), Cr (Chromium), Mo (molybdenum), Nb (niobium), V (vanadium), Hf (hafnium), Zr (zirconium), Ti (titanium), Cu (copper), and Co (cobalt). In cases in which the creep reinforcement material is coated on the surface of the heat-resistant metal member 10, powdered creep reinforcement material may be employed as it is, or a coating agent of the creep reinforcement material in a liquid form or paste form using a binder, solvent, adhesive or the like may be employed.
In cases in which the creep reinforcement material is thermally sprayed on the surface of the heat-resistant metal member 10, for example, a known thermal spray method may be appropriately employed, such as a plasma spraying method using powdered creep reinforcement material. Note that coating or thermally spraying of the creep reinforcement material on the surface of the heat-resistant metal member may be performed over the entire outer peripheral surface of the heat-resistant metal member 10 as in the present embodiment, or may be performed on a part of the surface of 5 the heat-resistant metal member 10.
There are no particular limitations to the creep reinforcement material, as long as it contains an element which has a melting point of 1000 C or greater and in which precipitation strengthening and solid solution strengthening occur upon heating to a temperature of 1000 C or greater so as to enable creep strength to be enhanced. Thus, for example, according to the substance of the heat-resistant metal member 10, the creep reinforcement material may contain any one or a plurality of elements appropriately selected from B (boron) , W (tungsten), Cr (Chromium), Mo (molybdenum), Nb (niobium), V (vanadium), Hf (hafnium), Zr (zirconium), Ti (titanium), Cu (copper), and Co (cobalt). In cases in which the creep reinforcement material is coated on the surface of the heat-resistant metal member 10, powdered creep reinforcement material may be employed as it is, or a coating agent of the creep reinforcement material in a liquid form or paste form using a binder, solvent, adhesive or the like may be employed.
In cases in which the creep reinforcement material is thermally sprayed on the surface of the heat-resistant metal member 10, for example, a known thermal spray method may be appropriately employed, such as a plasma spraying method using powdered creep reinforcement material. Note that coating or thermally spraying of the creep reinforcement material on the surface of the heat-resistant metal member may be performed over the entire outer peripheral surface of the heat-resistant metal member 10 as in the present embodiment, or may be performed on a part of the surface of 5 the heat-resistant metal member 10.
[0016]
There are no particular limitations to the heat-resistant covering member 30, as long as it is capable of covering the section 25 coated or thermally sprayed with the creep 10 reinforcement material so as to make contact with the section 25, as long as it is made from a heat-resistant material that restrains thermal expansion in the section 25 in the direction toward the outer periphery of the heat-resistant metal member 10 occurring when heated to the heating temperature mentioned above, and is able to maintain the approximate profile of the heat-resistant metal member 10 at the section 25. A material having a lower thermal expansion coefficient than the heat-resistant metal member 10 at temperatures of the heating temperature mentioned above or greater is preferably employed for the heat-resistant covering member 30. In cases in which the heat-resistant covering member 30 is configured from a heat-resistant material different from that of the heat-resistant metal member 10, yet having a thermal expansion coefficient of about the same as the heat-resistant metal member 10, or from a heat resistant material having a higher thermal expansion coefficient than the heat-resistant metal member 10, in order to restrain the thermal expansion of the heat-resistant covering member 30 occurring when heated to the heating temperature mentioned above, the outer periphery of the heat-resistant covering member 30 may be secured by a member of a heat-resistant material having a lower thermal expansion coefficient than the heat-resistant metal member 10 at or above the heating temperature mentioned above, so as to maintain the profile of the heat-resistant covering member 30.
There are no particular limitations to the heat-resistant covering member 30, as long as it is capable of covering the section 25 coated or thermally sprayed with the creep 10 reinforcement material so as to make contact with the section 25, as long as it is made from a heat-resistant material that restrains thermal expansion in the section 25 in the direction toward the outer periphery of the heat-resistant metal member 10 occurring when heated to the heating temperature mentioned above, and is able to maintain the approximate profile of the heat-resistant metal member 10 at the section 25. A material having a lower thermal expansion coefficient than the heat-resistant metal member 10 at temperatures of the heating temperature mentioned above or greater is preferably employed for the heat-resistant covering member 30. In cases in which the heat-resistant covering member 30 is configured from a heat-resistant material different from that of the heat-resistant metal member 10, yet having a thermal expansion coefficient of about the same as the heat-resistant metal member 10, or from a heat resistant material having a higher thermal expansion coefficient than the heat-resistant metal member 10, in order to restrain the thermal expansion of the heat-resistant covering member 30 occurring when heated to the heating temperature mentioned above, the outer periphery of the heat-resistant covering member 30 may be secured by a member of a heat-resistant material having a lower thermal expansion coefficient than the heat-resistant metal member 10 at or above the heating temperature mentioned above, so as to maintain the profile of the heat-resistant covering member 30.
[0017]
Examples of the heat-resistant material of the heat-resistant covering member 30 include ceramics such as 5 alumina, zirconia, aluminum nitride, silicon carbide, silicon nitride, cordierite, sialon, zircon, andmullite, and alloys such as Alloy 903, Alloy 909, and HRA 929.
Examples of the heat-resistant material of the heat-resistant covering member 30 include ceramics such as 5 alumina, zirconia, aluminum nitride, silicon carbide, silicon nitride, cordierite, sialon, zircon, andmullite, and alloys such as Alloy 903, Alloy 909, and HRA 929.
[0018]
The heat-resistant covering member 30 is, for example, 10 of a cord, plate, or clamp shape. Securing of the above may be performed by, for example, wrapping a cord-shaped or plate-shaped heat-resistant covering member 30 around the outer periphery of the heat-resistant metal member 10 at the section 25 coated or thermally sprayed with the creep reinforcement material, by attaching a clamp-shaped heat-resistant covering member 30 to the outer periphery of the heat-resistant metal member 10 at the section 25 coated or thermally sprayed with the creep reinforcement material, or by attaching a heat-resistant covering member 30 formed in a plate shape or the like to the outer periphery of a heat-resistant metal member 10 at the section 25 coated or thermally sprayed with the creep reinforcement material using fasteners, such as clamps or screws. In the present embodiment, the heat-resistant covering member 30 is made from fittings including two substantially semi-circular arc cross-section shapes. The heat-resistant covering member 30 is then secured to the surface of the heat-resistant metal member 10 using threaded members 35 attached to flanges of these fittings, such that the inner face of the fittings contact the outer periphery of the heat-resistant metal member 10 at the section 25 coated or thermally sprayed with the creep reinforcement material. The threaded members 35 are manufactured, for example, from the same material as the heat-resistant covering member 30.
The heat-resistant covering member 30 is, for example, 10 of a cord, plate, or clamp shape. Securing of the above may be performed by, for example, wrapping a cord-shaped or plate-shaped heat-resistant covering member 30 around the outer periphery of the heat-resistant metal member 10 at the section 25 coated or thermally sprayed with the creep reinforcement material, by attaching a clamp-shaped heat-resistant covering member 30 to the outer periphery of the heat-resistant metal member 10 at the section 25 coated or thermally sprayed with the creep reinforcement material, or by attaching a heat-resistant covering member 30 formed in a plate shape or the like to the outer periphery of a heat-resistant metal member 10 at the section 25 coated or thermally sprayed with the creep reinforcement material using fasteners, such as clamps or screws. In the present embodiment, the heat-resistant covering member 30 is made from fittings including two substantially semi-circular arc cross-section shapes. The heat-resistant covering member 30 is then secured to the surface of the heat-resistant metal member 10 using threaded members 35 attached to flanges of these fittings, such that the inner face of the fittings contact the outer periphery of the heat-resistant metal member 10 at the section 25 coated or thermally sprayed with the creep reinforcement material. The threaded members 35 are manufactured, for example, from the same material as the heat-resistant covering member 30.
[0019]
The heating temperature of the heat-resistant metal member 10 coated or thermally sprayed with the creep reinforcement material is not particularly limited, as long as it is a temperature of 1000 C or greater. Preferably the heat-resistant metal member 10 is heated at a temperature of, or greater than, an A3 transformation point of the component of the heat-resistant metal material of the member 10 or the creep reinforcement material having the highest A3 transformation point (preferably from 10 C to 100 C above 1000 C) for a specific duration (for example, from approximately several hours to approximately 24 hours) . Note that although the present embodiment employs, as a heating device, the high frequency heater 40, which is capable of heating the heat-resistant metal member 10 coated or thermally sprayed with the creep reinforcement material, from the outer periphery thereof, there is no particular limitation thereto, as long as a heating device capable of heating the heat-resistant metal member 10 at the section 25 coated or thermally sprayed with the creep reinforcement material.
The heating temperature of the heat-resistant metal member 10 coated or thermally sprayed with the creep reinforcement material is not particularly limited, as long as it is a temperature of 1000 C or greater. Preferably the heat-resistant metal member 10 is heated at a temperature of, or greater than, an A3 transformation point of the component of the heat-resistant metal material of the member 10 or the creep reinforcement material having the highest A3 transformation point (preferably from 10 C to 100 C above 1000 C) for a specific duration (for example, from approximately several hours to approximately 24 hours) . Note that although the present embodiment employs, as a heating device, the high frequency heater 40, which is capable of heating the heat-resistant metal member 10 coated or thermally sprayed with the creep reinforcement material, from the outer periphery thereof, there is no particular limitation thereto, as long as a heating device capable of heating the heat-resistant metal member 10 at the section 25 coated or thermally sprayed with the creep reinforcement material.
[0020]
The product of diffusing and permeating the creep reinforcement material into the heat-resistant metal member 10 by the method described above is useful as a heat-resistant metal member with enhanced creep strength due to the creep strength being enhanced as described above.
Reference Signs List
The product of diffusing and permeating the creep reinforcement material into the heat-resistant metal member 10 by the method described above is useful as a heat-resistant metal member with enhanced creep strength due to the creep strength being enhanced as described above.
Reference Signs List
[0021]
10 heat-resistant metal member 20 weld 25 section coated or thermally sprayed with creep reinforcement material 30 heat-resistant covering member 35 threaded member 40 high frequency heater
10 heat-resistant metal member 20 weld 25 section coated or thermally sprayed with creep reinforcement material 30 heat-resistant covering member 35 threaded member 40 high frequency heater
Claims (8)
1. A method for diffusing and permeating a creep reinforcement material into a heat-resistant metal member, the method comprising:
coating or thermally spraying a creep reinforcement material onto a surface of a heat-resistant metal member;
covering, by a heat-resistant covering member, a section coated or thermally sprayed with the creep reinforcement material, and securing the teat-resistant covering member so as to contact the section; and heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000°C or greater, wherein the creep reinforcement material contains B, W, Cr, Mo, Nb V, Hf, Zr, Ti, Cu, or Co, or any combination thereof wherein the heat-resistant covering member is a member made from a material that is able to maintain a profile of the heat-resistant metal member at a heating temperature of the heat-resistant metal member and is different from the creep reinforcement material, wherein the heat-resistant metal member is made of 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, 90r-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, or NCF800H, and wherein the heat-resistant covering member is a ceramic or an alloy.
coating or thermally spraying a creep reinforcement material onto a surface of a heat-resistant metal member;
covering, by a heat-resistant covering member, a section coated or thermally sprayed with the creep reinforcement material, and securing the teat-resistant covering member so as to contact the section; and heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000°C or greater, wherein the creep reinforcement material contains B, W, Cr, Mo, Nb V, Hf, Zr, Ti, Cu, or Co, or any combination thereof wherein the heat-resistant covering member is a member made from a material that is able to maintain a profile of the heat-resistant metal member at a heating temperature of the heat-resistant metal member and is different from the creep reinforcement material, wherein the heat-resistant metal member is made of 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, 90r-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, or NCF800H, and wherein the heat-resistant covering member is a ceramic or an alloy.
2. The method according to claim 1, wherein the heat-resistant covering member is a ceramic comprising alumina, zirconia, aluminum nitride, silicon carbide, silicon nitride, cordierite, sialon, zircon or mullite.
3. The method according to claim 1, wherein the heat-resistant covering member is an alloy comprising Alloy 903, Alloy 909 or HRA 929.
4. The method according to any one of claims 1 to 3, wherein, the heat-resistant metal member is made of metal containing steel as a main component, and after heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000°C or greater, the heat-resistant metal member covered by the heat-resistant covering member is cooled and re-heated to a temperature of an A1 transformation point or greater.
5. A heat-resistant metal member with enhanced creep strength, the heat-resistant metal member being obtained by coating or thermally spraying a creep reinforcement material onto a surface of a heat-resistant metal member, covering, by a heat-resistant covering member, a section coated or thermally sprayed with the creep reinforcement material, and securing the heat-resistant covering member so as to contact the section, and heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000°C or greater; and the creep reinforcement material containing B, W, Cr, Mo, Nb, V, Hf, Zr, Ti, Cu, or Co, or any combination thereof wherein the heat-resistant covering member is a member made from a material that is able to maintain a profile of the heat-resistant metal member at a heating temperature of the heat-resistant metal member and is different from the creep reinforcement material, wherein the heat-resistant metal member is made of 0.3Mo steel, 0.5Mo steel, 0.5Cr-0.5Mo steel, 1Cr-0.2Mo steel, 1Cr-0.5Mo steel, 1.250r-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, or NCF800H, and wherein the heat-resistant covering member is a ceramic or an alloy.
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, or NCF800H, and wherein the heat-resistant covering member is a ceramic or an alloy.
6. The heat-resistant metal member according to claim 5, wherein the heat-resistant covering member is a ceramic comprising alumina, zirconia, aluminum nitride, silicon carbide, silicon nitride, cordierite, sialon, zircon or mullite.
7. The heat-resistant metal member according to claim 5, wherein the heat-resistant covering member is an alloy comprising Alloy 903, Alloy 909 or HRA 929.
8. The heat-resistant metal member according to any one of claims 5 to 7, wherein the heat-resistant metal member is made of metal containing steel as a main component, and the heat-resistant metal member is obtained by, after heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000°C or greater, cooling and re-heating to a temperature of an A1 transformation point or greater.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
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| CA2924624A1 CA2924624A1 (en) | 2015-04-02 |
| CA2924624C true CA2924624C (en) | 2017-12-12 |
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| Country | Link |
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| US (1) | US20160230262A1 (en) |
| EP (1) | EP3050997B1 (en) |
| JP (1) | JP5925958B2 (en) |
| KR (1) | KR20160043033A (en) |
| CN (1) | CN105555988A (en) |
| CA (1) | CA2924624C (en) |
| PL (1) | PL3050997T3 (en) |
| WO (1) | WO2015045038A1 (en) |
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| KR102155888B1 (en) * | 2017-09-11 | 2020-09-14 | 주식회사 엘지화학 | Laser welding jig and laser welding apparatus comprising the same |
| CN108161209B (en) * | 2017-12-23 | 2021-06-15 | 河南瀚银光电科技股份有限公司 | Aluminum-based composite material and preparation method thereof |
| WO2020065817A1 (en) * | 2018-09-27 | 2020-04-02 | 中国電力株式会社 | Method for repairing heat-resistant alloy component |
| CN112094997B (en) * | 2020-09-15 | 2022-02-15 | 中南大学 | Method for improving corrosion resistance of low-alloy ultrahigh-strength steel weldment |
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| DE3907625C1 (en) * | 1989-03-09 | 1990-02-15 | Mtu Muenchen Gmbh | |
| JPH04176856A (en) * | 1990-04-19 | 1992-06-24 | Nkk Corp | Wear resistant laminated material and its production |
| JPH0794705B2 (en) * | 1990-04-19 | 1995-10-11 | 日本鋼管株式会社 | Abrasion resistant composite material and manufacturing method thereof |
| JP2733016B2 (en) * | 1994-04-06 | 1998-03-30 | 新日本製鐵株式会社 | Liquid phase diffusion bonding alloy foil for heat resistant materials that can be bonded in oxidizing atmosphere |
| CN1065570C (en) * | 1994-06-24 | 2001-05-09 | 普拉塞尔·S·T·技术有限公司 | A process for producing carbide particles dispersed in a mcraly-based coating |
| JPH1137864A (en) * | 1997-07-23 | 1999-02-12 | Aisin Seiki Co Ltd | Manufacture of magnetostrictive film of magnetostrictive torque sensor |
| JP2002257163A (en) * | 2001-02-28 | 2002-09-11 | Daido Seimitsu Kogyo Kk | Brake apparatus and backlash decreasing method of brake apparatus |
| JP3793966B2 (en) | 2002-08-30 | 2006-07-05 | 中国電力株式会社 | High-temperature material with improved heat-resistant material modification and strengthening and creep characteristics of weld heat-affected zone |
| WO2008059971A1 (en) * | 2006-11-16 | 2008-05-22 | National University Corporation Hokkaido University | Multilayer alloy coating film, heat-resistant metal member having the same, and method for producing multilayer alloy coating film |
| US7900458B2 (en) * | 2007-05-29 | 2011-03-08 | Siemens Energy, Inc. | Turbine airfoils with near surface cooling passages and method of making same |
| US20110244138A1 (en) * | 2010-03-30 | 2011-10-06 | Schlichting Kevin W | Metallic coating for non-line of sight areas |
| JP5859305B2 (en) * | 2011-12-27 | 2016-02-10 | 三菱重工業株式会社 | Regeneration apparatus for creep part of large-diameter metal pipe and regeneration method using the regeneration apparatus |
| US20130220523A1 (en) * | 2012-02-29 | 2013-08-29 | c/o Chevron Corporation | Coating compositions, applications thereof, and methods of forming |
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2013
- 2013-09-25 WO PCT/JP2013/075927 patent/WO2015045038A1/en active Application Filing
- 2013-09-25 US US15/022,948 patent/US20160230262A1/en not_active Abandoned
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- 2013-09-25 CN CN201380079648.6A patent/CN105555988A/en active Pending
- 2013-09-25 EP EP13894771.8A patent/EP3050997B1/en active Active
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| Publication number | Publication date |
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| EP3050997A4 (en) | 2016-09-21 |
| EP3050997B1 (en) | 2018-07-18 |
| JP5925958B2 (en) | 2016-05-25 |
| US20160230262A1 (en) | 2016-08-11 |
| CA2924624A1 (en) | 2015-04-02 |
| PL3050997T3 (en) | 2018-12-31 |
| WO2015045038A1 (en) | 2015-04-02 |
| EP3050997A1 (en) | 2016-08-03 |
| KR20160043033A (en) | 2016-04-20 |
| CN105555988A (en) | 2016-05-04 |
| JPWO2015045038A1 (en) | 2017-03-02 |
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