CN113584331A - Preparation method of aluminum-doped Inconel625 alloy applied to oxygen-containing high-temperature chlorine corrosion environment - Google Patents
Preparation method of aluminum-doped Inconel625 alloy applied to oxygen-containing high-temperature chlorine corrosion environment Download PDFInfo
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- CN113584331A CN113584331A CN202110731117.7A CN202110731117A CN113584331A CN 113584331 A CN113584331 A CN 113584331A CN 202110731117 A CN202110731117 A CN 202110731117A CN 113584331 A CN113584331 A CN 113584331A
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- 239000000956 alloy Substances 0.000 title claims abstract description 63
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 61
- 229910001119 inconels 625 Inorganic materials 0.000 title claims abstract description 57
- 238000005260 corrosion Methods 0.000 title claims abstract description 45
- 230000007797 corrosion Effects 0.000 title claims abstract description 45
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000000460 chlorine Substances 0.000 title claims abstract description 25
- 229910052801 chlorine Inorganic materials 0.000 title claims abstract description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 21
- 239000001301 oxygen Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000000137 annealing Methods 0.000 claims description 6
- 239000012300 argon atmosphere Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000012298 atmosphere Substances 0.000 description 5
- 238000005258 corrosion kinetic Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000004584 weight gain Effects 0.000 description 4
- 235000019786 weight gain Nutrition 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
本发明属于耐高温氯腐蚀合金设计与性能测试领域，具体涉及一种应用于含氧高温氯腐蚀环境的铝掺杂Inconel625合金的制备方法。取Inconel625焊丝，与铝一同超声清洗、干燥得到混合物；铝的质量分数按照Inconel625：xAl，铝的原子数百分含量x的取值为：3at.%、5 at.%、7 at.%或10 at.%；将混合物进行电弧熔炼得到合金锭，对合金锭进行退火即得铝掺杂Inconel625合金。本发明与相应的成分类似的Inconel625合金相比，铝含量较低Inconel625:3Al合金的腐蚀速率更高，而高铝含量的Inconel625:10Al合金表现出更为优异的抗腐蚀性能。本发明旨在将其作为具有较高性价比的耐高温氯腐蚀合金材料，有望应用于垃圾焚烧炉换热器管排表面制备耐蚀涂层。
The invention belongs to the field of high-temperature chlorine corrosion-resistant alloy design and performance testing, and particularly relates to a preparation method of an aluminum-doped Inconel625 alloy used in an oxygen-containing high-temperature chlorine corrosion environment. Take Inconel625 welding wire, ultrasonically clean and dry it together with aluminum to obtain a mixture; the mass fraction of aluminum is according to Inconel625: xAl, and the value of the atomic percent content x of aluminum is: 3 at.%, 5 at.%, 7 at.% or 10 at.%; the mixture is arc smelted to obtain an alloy ingot, and the alloy ingot is annealed to obtain an aluminum-doped Inconel625 alloy. Compared with the corresponding Inconel625 alloy with similar composition, the corrosion rate of the Inconel625:3Al alloy with lower aluminum content is higher, while the Inconel625:10Al alloy with high aluminum content shows more excellent corrosion resistance. The invention aims to use it as a high-temperature chlorine corrosion-resistant alloy material with high cost performance, and is expected to be applied to the surface of the heat exchanger tube row of a waste incinerator to prepare a corrosion-resistant coating.
Description
Technical Field
The invention belongs to the field of high-temperature chlorine corrosion resistant alloy design and performance test, and particularly relates to a preparation method of an aluminum-doped Inconel625 alloy applied to an oxygen-containing high-temperature chlorine corrosion environment.
Background
With the increase of population base, environmental pollution caused by municipal solid waste in countries of the world is serious, the treatment of the municipal solid waste becomes a problem to be solved urgently, and although the popularization of classified recycling of the waste is gradually carried out in recent years, great effect is not seen. The traditional garbage disposal methods mainly comprise landfill, composting and incineration methods. The waste incineration method can be used as a power plant to generate electricity due to the heat generated by the waste incineration method, so that the use of traditional fuels is reduced, and CO is reduced2The emission is beneficial to relieving the pressure of insufficient energy, and good social and economic benefits are achieved. However, the incineration method provides a more severe service condition for the material of the garbage incinerator, and in order to meet the requirement, it is common at present to weld an Inconel625 coating on the surface of the material by surfacing so as to prolong the service life of the incinerator. The high coating cost becomes a very large bottleneck of the method at present, and the research is just for the comprehensive consideration of cost and corrosion resistance to prepare the modified Inconel625 alloy material with higher cost performance.
Disclosure of Invention
In order to achieve the expected aim, the invention provides a preparation method of an aluminum-doped Inconel625 alloy applied to an oxygen-containing high-temperature chlorine corrosion environment, which takes high-purity aluminum metal particles and a domestic Inconel625 welding wire as initial raw materials, adopts a vacuum arc melting technology to prepare the Al-doped Inconel625 alloy (Inconel 625: xAl, x =3, 5, 7 and 10 at.%) and examines the Al-doped Inconel625 alloy in an oxygen-containing HCl atmosphere (N, and N, and N, and S, N, and S, N, and N are respectively2-0.5 % HCl-1.5 % O2-3.0 % CO2) Medium and 600-800 deg.C corrosion behavior.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of an aluminum-doped Inconel625 alloy applied to an oxygen-containing high-temperature chlorine corrosion environment comprises the following steps:
(1) taking an Inconel625 welding wire, carrying out ultrasonic cleaning together with aluminum, and drying to obtain a mixture;
the mass fraction of aluminum in step (1) is as follows Inconel625: xAl, wherein the atomic number percentage content x of the aluminum takes the value as follows: 3at.%, 5 at.%, 7 at.%, or 10 at.%;
(2) and arc melting the mixture to obtain an alloy ingot, and annealing the alloy ingot to obtain the aluminum-doped Inconel625 alloy.
Further, in the step (1) above: preferred values for the mass fraction x of aluminum are: x =10 at.%.
Further, in the step (2) above: the arc melting condition is argon atmosphere, and the current is 180-220A.
Further, in the step (2) above: the annealing is carried out at 900 ℃ for 24 h.
A monitoring method of an aluminum-doped Inconel625 alloy applied to an oxygen-containing high-temperature chlorine corrosion environment comprises the following steps:
detecting the corrosion resistance behavior of the prepared aluminum-doped Inconel625 alloy in an oxygen-containing high-temperature chlorine corrosion environment;
the oxygen-containing high-temperature chlorine corrosion environment is N2-0.5 % 、HCl-1.5 %、 O2-3.0 % CO2600 ℃ and 800 ℃, and the etching time is 200 h.
Compared with the prior art, the invention has the advantages that:
in the present invention, for the Inconel625: xAl (x =3, 5, 7, 10 at.%) alloy, in N2-0.5 % HCl-1.5% O2-3.0% CO2In the corrosive environment atmosphere, the addition of a certain content of Al obviously improves the high-temperature oxidation resistance of the alloy. The corrosion behavior of Inconel625: xAl (x =3, 5, 7, 10 at.%) alloy in an oxidizing, chlorine-containing atmosphere follows an activated oxidation mechanism. The corrosion behaviour of the duplex alloy is more complex, the corrosion behaviour of the Inconel625: xAl (x =3, 5, 7, 10 at.%) alloy is not only related to the Al content of the alloy, but also to its volume fraction. Second phase bodies in Inconel625:7Al alloy, as compared to Inconel625:5Al alloyThe integral number is significantly increased, inhibiting the diffusion of Al, and thus its corrosion resistance is inferior to Inconel625:5Al alloy. The Inconel625:10Al alloy showed the best corrosion resistance with increasing Al content, with a 200 h corrosion weight gain of only 48.46% of the unmodified Inconel625 weight gain at 800 ℃. Therefore, the alloy in the invention achieves the expected goal of improving the corrosion resistance of materials and reducing the cost.
Drawings
FIG. 1 is a technical route flow diagram of the present invention;
fig. 2 is an Inconel625:xAl(x=0, 3, 5, 7, 10 at%) corrosion kinetics curve of the alloy at 800 ℃ for 200 h;
FIG. 3 is a corrosion kinetics curve of an Inconel625 alloy at 600-800 ℃ for 200 h in the present invention;
FIG. 4 is a corrosion kinetics curve of the IInconel625:5Al alloy at 600-;
FIG. 5 is a corrosion kinetics curve of an Inconel625:10Al alloy at 600-800 ℃ for 200 h.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, in the embodiment of the present invention:
a preparation method of an aluminum-doped Inconel625 alloy applied to an oxygen-containing high-temperature chlorine corrosion environment comprises the following steps:
(1) taking an Inconel625 welding wire, carrying out ultrasonic cleaning together with aluminum, and drying to obtain a mixture;
the mass fraction of aluminum in step (1) is as follows Inconel625: xAl, wherein the atomic number percentage content x of the aluminum takes the value as follows: 3at.%, 5 at.%, 7 at.%, or 10 at.%;
(2) and arc melting the mixture to obtain an alloy ingot, and annealing the alloy ingot to obtain the aluminum-doped Inconel625 alloy.
Further, in the step (1) above: preferred values for the mass fraction x of aluminum are: x =10 at.%.
Further, in the step (2) above: the arc melting condition is argon atmosphere, and the current is 180-220A.
Further, in the step (2) above: the annealing is carried out at 900 ℃ for 24 h.
A monitoring method of an aluminum-doped Inconel625 alloy applied to an oxygen-containing high-temperature chlorine corrosion environment comprises the following steps:
detecting the corrosion resistance behavior of the prepared aluminum-doped Inconel625 alloy in an oxygen-containing high-temperature chlorine corrosion environment;
the oxygen-containing high-temperature chlorine corrosion environment is N2-0.5 % 、HCl-1.5 %、 O2-3.0 % CO2600 ℃ and 800 ℃, and the etching time is 200 h.
For the Inconel625: xAl (x =0, 3, 5, 7, 10 at.%) alloy, in N2-0.5 % HCl-1.5% O2-3.0% CO2In the corrosive environment atmosphere, the addition of a certain content of aluminum obviously improves the high-temperature oxidation resistance of the alloy. The corrosion behavior of Inconel625: xAl (x =0, 3, 5, 7, 10 at.%) alloy in an oxidizing, chlorine-containing atmosphere follows an activated oxidation mechanism.
The corrosion behaviour of the duplex alloy is more complex, the corrosion behaviour of the Inconel625: xAl (x =0, 3, 5, 7, 10 at.%) alloy is not only related to the Al content of the alloy, but also to its volume fraction. The fractional volume of the second phase in the Inconel625:7Al alloy is significantly increased compared to the Inconel625:5Al alloy, inhibiting diffusion of Al, and thus is less corrosion resistant than the Inconel625:5Al alloy. The Inconel625:10Al alloy showed the best corrosion resistance with increasing Al content, with a 200 h corrosion weight gain of only 48.46% of the unmodified Inconel625 weight gain at 800 ℃. Therefore, the alloy in the invention achieves the expected goal of improving the corrosion resistance of materials and reducing the cost.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A preparation method of an aluminum-doped Inconel625 alloy applied to an oxygen-containing high-temperature chlorine corrosion environment is characterized by comprising the following steps:
(1) taking an Inconel625 welding wire, carrying out ultrasonic cleaning together with aluminum, and drying to obtain a mixture;
the mass fraction of aluminum in step (1) is as follows Inconel625: xAl, wherein the atomic number percentage content x of the aluminum takes the value as follows: 3at.%, 5 at.%, 7 at.%, or 10 at.%;
(2) and arc melting the mixture to obtain an alloy ingot, and annealing the alloy ingot to obtain the aluminum-doped Inconel625 alloy.
2. The preparation method of the aluminum-doped Inconel625 alloy applied to the oxygen-containing high-temperature chlorine corrosion environment according to claim 1, wherein the preparation method comprises the following steps:
in the above step (1): preferred values for the mass fraction x of aluminum are: x =10 at.%.
3. The preparation method of the aluminum-doped Inconel625 alloy applied to the oxygen-containing high-temperature chlorine corrosion environment according to claim 1, wherein the preparation method comprises the following steps:
in the above step (2): the arc melting condition is argon atmosphere, and the current is 180-220A.
4. The preparation method of the aluminum-doped Inconel625 alloy applied to the oxygen-containing high-temperature chlorine corrosion environment according to claim 1, wherein the preparation method comprises the following steps:
in the above step (2): the annealing is carried out at 900 ℃ for 24 h.
5. The method for monitoring the aluminum-doped Inconel625 alloy applied to the oxygen-containing high-temperature chlorine corrosion environment according to claim 1, wherein the method comprises the following steps:
detecting the corrosion resistance behavior of the prepared aluminum-doped Inconel625 alloy in an oxygen-containing high-temperature chlorine corrosion environment;
the oxygen-containing high-temperature chlorine corrosion environment is N2-0.5 % 、HCl-1.5 %、 O2-3.0 % CO2600 ℃ and 800 ℃, and the etching time is 200 h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116536535A (en) * | 2023-04-28 | 2023-08-04 | 江苏奇纳新材料科技有限公司 | Nickel-based superalloy turning scraps recycling method |
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|---|---|---|---|---|
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| JPS5472716A (en) * | 1977-11-22 | 1979-06-11 | Tetsuya Watanabe | High nickel alloy for spectacles |
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| CN104878248A (en) * | 2015-03-12 | 2015-09-02 | 江苏新华合金电器有限公司 | High temperature alloy 625H and technological making method thereof |
| CN104878249A (en) * | 2015-05-15 | 2015-09-02 | 新奥科技发展有限公司 | Nickel-based alloy and preparation method and application thereof |
| CN108220857A (en) * | 2018-01-04 | 2018-06-29 | 西安热工研究院有限公司 | The anti-chlorine corrosion double-layer structure alloy coat of waste incinerator heating surface and preparation method |
| CN109280788A (en) * | 2018-11-28 | 2019-01-29 | 陕西宝锐金属有限公司 | A kind of technique preventing GH625 alloy pipe weld stress corrosion cracking |
| CN110093520A (en) * | 2019-03-19 | 2019-08-06 | 江苏汉青特种合金有限公司 | A kind of manufacturing method of high-end corrosion resisting alloy |
| CN113667861A (en) * | 2021-08-23 | 2021-11-19 | 中航上大高温合金材料股份有限公司 | Smelting method of GH3625 alloy |
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2021
- 2021-06-30 CN CN202110731117.7A patent/CN113584331A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1388104A (en) * | 1973-01-24 | 1975-03-19 | Wiggin & Co Ltd Henry | Corrosion resistant alloys |
| JPS5472716A (en) * | 1977-11-22 | 1979-06-11 | Tetsuya Watanabe | High nickel alloy for spectacles |
| CN101037738A (en) * | 2006-03-17 | 2007-09-19 | 郑效慈 | High-temperature alloy part and welding material |
| CN104878248A (en) * | 2015-03-12 | 2015-09-02 | 江苏新华合金电器有限公司 | High temperature alloy 625H and technological making method thereof |
| CN104878249A (en) * | 2015-05-15 | 2015-09-02 | 新奥科技发展有限公司 | Nickel-based alloy and preparation method and application thereof |
| CN108220857A (en) * | 2018-01-04 | 2018-06-29 | 西安热工研究院有限公司 | The anti-chlorine corrosion double-layer structure alloy coat of waste incinerator heating surface and preparation method |
| CN109280788A (en) * | 2018-11-28 | 2019-01-29 | 陕西宝锐金属有限公司 | A kind of technique preventing GH625 alloy pipe weld stress corrosion cracking |
| CN110093520A (en) * | 2019-03-19 | 2019-08-06 | 江苏汉青特种合金有限公司 | A kind of manufacturing method of high-end corrosion resisting alloy |
| CN113667861A (en) * | 2021-08-23 | 2021-11-19 | 中航上大高温合金材料股份有限公司 | Smelting method of GH3625 alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116536535A (en) * | 2023-04-28 | 2023-08-04 | 江苏奇纳新材料科技有限公司 | Nickel-based superalloy turning scraps recycling method |
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Application publication date: 20211102 |