CN103556003A - Preparation method for nickel-based alloy used for nuclear power station equipment parts - Google Patents
Preparation method for nickel-based alloy used for nuclear power station equipment parts Download PDFInfo
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- CN103556003A CN103556003A CN201310472590.3A CN201310472590A CN103556003A CN 103556003 A CN103556003 A CN 103556003A CN 201310472590 A CN201310472590 A CN 201310472590A CN 103556003 A CN103556003 A CN 103556003A
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Abstract
The invention provides a preparation method for a nickel-based alloy used for nuclear power station equipment parts. The nickel-based alloy used for high temperature-resistant and corrosion-resistant parts is prepared by taking the nickel-based alloy comprising, by weight, 60 (min) parts of Ni, 0.20 (max) part of Cu, 7.0-11.0 parts of Fe, 0.30-0.50 part of Mn, 0.025-0.030 part of C, 0.10-0.50 part of Si, 0.010 (max) part of S, 28.0-31.0 parts of Cr, 0.10-0.50 part of Al, 0.50 (max) part of Ti, 0.005 (max) part of B, 0.005 (max) part of N, 0.015 (max) part of P, 0.10 (max) part of Nb, 0.10 (max) part of M and 0.05 (max) part of Co; forming by forging; carrying out solid solution heat treatment and carrying out heat treatment. Mechanical property tests show that tensile strength, yield strength, elongation percentage and impact energy of the nickel-based alloy are superior to performance standards regulated by the state; the nickel-based alloy has the properties of high temperature resistance and corrosion resistance; a corrosion rate is smaller than 20 mg/(dm<2>.day); crystal boundary carbide is distributed uniformly; and only an extremely fine carbide is precipitated in the crystal.
Description
Technical field
The invention belongs to metallic substance technical field, the preparation method of the nickel-base alloy that particularly a kind of nuclear power plant equipment component are used.
Background technology
The equipment that Nuclear power plants is used is comprised of some component, the life-span that these component relate to Nuclear power plants operation and use, so it need to be made by high temperature resistant, corrosion resistant nickel-bass alloy material.
Along with the startup of the great special demonstration project CAP1400 third generation technological project of China, need a kind of physicochemical property better, under high temperature, hyperbaric environment, there is higher mechanical behavior under high temperature and the nickel base superalloy of corrosion resistance nature.The room temperature tensile strength of this nickel-base alloy is no less than that 586Mpa, yield strength are not less than 241Mpa, unit elongation is less than 30%; Tensile strength below 350 ℃ is not less than 550Mpa, yield strength is not less than 190Mpa; Grain boundary carbide is evenly distributed, and intracrystalline only has few Carbide Precipitation, and erosion rate is less than 20 milligrams of/square decimeter of skies.
At present, nuclear power plant equipment component are used the nickel-bass alloy material of being prepared by ordinary method conventionally, nickel-bass alloy material prepared by this ordinary method, its weight percentage component is: Ni58.0min, Cu0.5max, Fe7.0～11.0, Mn0.5max, C0.05max, Si0.5max, S0.015max, Cr27.0～31.0.Nuclear power plant equipment component, by the component preparation of above-described nickel-base alloy percentage composition, all do not reach the requirement of the technical parameter of CAP1400 third generation technological project regulation in sum.
Summary of the invention
The object of the invention, be the problem that the nickel-bass alloy material prepared by ordinary method for nuclear power plant equipment component exists, the preparation method of the nickel-base alloy that nuclear power plant equipment component that a kind of technical parameter of Neng Full foot CAP1400 third generation technological project regulation requires use is provided.It,, by adjusting some constituent content in nickel-base alloy, adopts and forges and heat treating method, controls separating out of carbide, thereby improves the over-all properties of nickel-bass alloy material.
The preparation method of the nickel-base alloy that nuclear power plant equipment component of the present invention are used, getting chemical component weight percentage composition is: Ni60.0min, Cu0.20max, Fe7.0～11.0, Mn0.30～0.50, the nickel-base alloy of C0.025～0.030, Si0.10～0.50, S0.010max, Cr28.0～31.0, Al0.10～0.50, Ti0.50max, B0.005max, N0.05max, P0.015max, Nb0.10max, Mo0.10max, Co0.05max, through forging molding, the temperature of its solution heat treatment is got 1016～1119 ℃.
During solution heat treatment, according to the actual heat treatment gauge of nuclear power plant equipment component, determine soaking time, when being not more than 20mm, by being at least incubated 60 minutes, when being greater than 20mm, by every increase 1mm, soaking time, increase by 1.5 minutes.
After solution heat treatment, also need to carry out thermal treatment again, thermal treatment temp is 705～730 ℃ again, and determine soaking time according to the actual heat treatment gauge of nuclear power plant equipment component, when being not more than 20mm, be at least incubated 8 hours, when being greater than 20mm, by every increase 1mm, soaking time increases by 2 minutes.
The nickel-base alloy that nuclear power plant equipment component of the present invention are used is through forging molding, then through solution heat treatment, thermal treatment again, is prepared into the nickel-base alloy that high temperature resistant, corrosion resistant nuclear power plant equipment component are used.
Nuclear power plant equipment component prepared by method of the present invention, detect its tensile strength 630Mpa min, yield strength 250Mpa min, unit elongation 30%min, ballistic work 100J min through room-temperature mechanical property.Material detects through 350 ℃ of high temperature, mechanical property, its tensile strength 550Mpa min, yield strength 190Mpa min.Material carries out Huey test after sensitization is processed, and the erosion rate of sample is less than 20 milligrams of/square decimeter of skies, and grain boundary carbide is evenly distributed, and intracrystalline only has the tiny Carbide Precipitation of minute quantity.
Adopt the nickel-base alloy of chemical composition described in the inventive method, through forging molding, then through solution heat treatment, nickel-base alloy that again prepared by thermal treatment, surpass the mechanical performance index of national regulation, there is high temperature resistant, corrosion resistance nature.
Embodiment
Below enumerate hydroecium dividing plate component that nuclear power station steam generator equipment uses as an embodiment, be used for illustrating that the present invention adopts component of nuclear power plant equipment, but be not used in restriction components range of the present invention, and the preparation method of the nickel-base alloy that nuclear power plant equipment component of the present invention are used is further described.
The nickel-base alloy that nuclear power station steam generator hydroecium dividing plate component of the present invention are used, its preparation method, getting chemical component weight percentage composition is: Ni60.0min, Cu0.20max, Fe7.0～11.0, Mn0.30～0.50, the nickel-base alloy of C0.025～0.030, Si0.10～0.50, S0.010max, Cr28.0～31.0, Al0.10～0.50, Ti0.50max, B0.005max, N0.05max, P0.015max, Nb0.10max, Mo0.10max, Co0.05max, is adjusted into through forging molding via conventional roll forming.
During enforcement, adopt ESR ingot to carry out cogging forging, with swage block, pull out, can make the strong three-dimensional compaction force of the inner generation of steel ingot, interior tissue is finer and close, in forging process, initial forging temperature is controlled to 1120 ± 20 ℃, final forging temperature is controlled at 950 ± 20 ℃, deflection >=25% of last fire.
After forging, its solution heat treatment temperature is got 1016～1119 ℃, and while specifically implementing, thermal treatment temp parameter is as follows:
When in nickel-bass alloy material, the actual content of C is 0.015%max, solution heat treatment temperature is got 1016～1036 ℃;
When in nickel-bass alloy material, the actual content of C is 0.016%max, solution heat treatment temperature is got 1023～1043 ℃;
When in nickel-bass alloy material, the actual content of C is 0.017%max, solution heat treatment temperature is got 1030～1050 ℃;
When in nickel-bass alloy material, the actual content of C is 0.018%max, solution heat treatment temperature is got 1036～1056 ℃;
When in nickel-bass alloy material, the actual content of C is 0.019%max, solution heat treatment temperature is got 1043～1063 ℃;
When in nickel-bass alloy material, the actual content of C is 0.020%max, solution heat treatment temperature is got 1049～1069 ℃;
When in nickel-bass alloy material, the actual content of C is 0.021%max, solution heat treatment temperature is got 1055～1075 ℃;
When in nickel-bass alloy material, the actual content of C is 0.022%max, solution heat treatment temperature is got 1060～1080 ℃;
When in nickel-bass alloy material, the actual content of C is 0.023%max, solution heat treatment temperature is got 1066～1086 ℃;
When in nickel-bass alloy material, the actual content of C is 0.024%max, solution heat treatment temperature is got 1071～1091 ℃;
When in nickel-bass alloy material, the actual content of C is 0.025%max, solution heat treatment temperature is got 1076～1096 ℃;
When in nickel-bass alloy material, the actual content of C is 0.026%max, solution heat treatment temperature is got 1081～1101 ℃;
When in nickel-bass alloy material, the actual content of C is 0.027%max, solution heat treatment temperature is got 1085～1105 ℃;
When in nickel-bass alloy material, the actual content of C is 0.028%max, solution heat treatment temperature is got 1090～1110 ℃;
When in nickel-bass alloy material, the actual content of C is 0.029%max, solution heat treatment temperature is got 1094～1114 ℃;
When in nickel-bass alloy material, the actual content of C is 0.030%max, solution heat treatment temperature is got 1099～1119 ℃.
During solution heat treatment, actual heat treatment gauge according to vapour generator hydroecium dividing plate component is determined soaking time, when actual heat treatment gauge is not more than 20mm, by being at least incubated 60 minutes, when actual heat treatment gauge is greater than 20mm, by every increase 1mm, soaking time, increase by 1.5 minutes.
After solution heat treatment, also need to carry out thermal treatment again, thermal treatment temp is 705～730 ℃ again, and determine soaking time according to the actual heat treatment gauge of nuclear power plant equipment component, when being not more than 20mm, be at least incubated 8 hours, when being greater than 20mm, by every increase 1mm, soaking time increases by 2 minutes.
The nickel-base alloy that nuclear power station steam generator hydroecium dividing plate component of the present invention are used, through forging molding, then through solution heat treatment and thermal treatment again, is prepared into the nickel-base alloy that high temperature resistant, corrosion resistant vapour generator hydroecium dividing plate component are used.
Claims (4)
1. the preparation method of the nickel-base alloy that nuclear power plant equipment component are used, it is characterized in that, getting chemical component weight percentage composition is: Ni60.0min, Cu0.20max, Fe7.0～11.0, Mn0.30～0.50, C0.025～0.030, Si0.10～0.50, S0.010max, Cr28.0～31.0, Al0.10～0.50, Ti0.50max, B0.005max, N0.05max, P0.015max, Nb0.10max, Mo0.10max, the nickel-base alloy of Co0.05max, through forging molding, again through solution heat treatment, thermal treatment again, be prepared into high temperature resistant, the nickel-base alloy that corrosion resistant nuclear power plant equipment component are used.
2. method according to claim 1, is characterized in that the temperature of solution heat treatment is got 1016～1119 ℃.
3. method according to claim 1 and 2, while it is characterized in that solution heat treatment, actual heat treatment gauge according to nuclear power plant equipment component is determined soaking time, when being not more than 20mm, by being at least incubated 60 minutes, when being greater than 20mm, by every increase 1mm, soaking time, increase by 1.5 minutes.
4. method according to claim 1 and 2, it is characterized in that after solution heat treatment, again through the thermal treatment again of 705～730 ℃, and determine soaking time according to the actual heat treatment gauge of nuclear power plant equipment component, when being not more than 20mm, be at least incubated 8 hours, when being greater than 20mm, by every increase 1mm, soaking time increases by 2 minutes.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756245A (en) * | 2016-10-31 | 2017-05-31 | 重庆材料研究院有限公司 | A kind of alloy material for nuclear field liquid waste processing tankage and preparation method thereof |
| CN112481566A (en) * | 2020-11-16 | 2021-03-12 | 太原钢铁(集团)有限公司 | Heat treatment method for nickel-based alloy plate |
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| JPS6169938A (en) * | 1984-09-14 | 1986-04-10 | Sumitomo Metal Ind Ltd | Grain boundary damage resistant ni base alloy and its manufacture |
| CN102016090A (en) * | 2008-05-22 | 2011-04-13 | 住友金属工业株式会社 | High-strength Ni-base alloy pipe for use in nuclear power plants and process for production thereof |
| CN102581512A (en) * | 2012-03-06 | 2012-07-18 | 中国科学院金属研究所 | Point defect control method for nickel-based weld joint |
| CN102732751A (en) * | 2012-06-18 | 2012-10-17 | 江苏新华合金电器有限公司 | Anti-vibration alloy material for nuclear power station steam generator and preparation process thereof |
| CN102758096A (en) * | 2012-08-08 | 2012-10-31 | 贵州航天新力铸锻有限责任公司 | Process for preparing nickel-based high-temperature alloy material for nuclear power plant flow restrictor |
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- 2013-09-27 CN CN201310472590.3A patent/CN103556003A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6169938A (en) * | 1984-09-14 | 1986-04-10 | Sumitomo Metal Ind Ltd | Grain boundary damage resistant ni base alloy and its manufacture |
| CN102016090A (en) * | 2008-05-22 | 2011-04-13 | 住友金属工业株式会社 | High-strength Ni-base alloy pipe for use in nuclear power plants and process for production thereof |
| CN102581512A (en) * | 2012-03-06 | 2012-07-18 | 中国科学院金属研究所 | Point defect control method for nickel-based weld joint |
| CN102732751A (en) * | 2012-06-18 | 2012-10-17 | 江苏新华合金电器有限公司 | Anti-vibration alloy material for nuclear power station steam generator and preparation process thereof |
| CN102758096A (en) * | 2012-08-08 | 2012-10-31 | 贵州航天新力铸锻有限责任公司 | Process for preparing nickel-based high-temperature alloy material for nuclear power plant flow restrictor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756245A (en) * | 2016-10-31 | 2017-05-31 | 重庆材料研究院有限公司 | A kind of alloy material for nuclear field liquid waste processing tankage and preparation method thereof |
| CN112481566A (en) * | 2020-11-16 | 2021-03-12 | 太原钢铁(集团)有限公司 | Heat treatment method for nickel-based alloy plate |
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Application publication date: 20140205 |