CN113390696A - Grain size corrosion method of high-temperature alloy - Google Patents
Grain size corrosion method of high-temperature alloy Download PDFInfo
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- CN113390696A CN113390696A CN202110572733.2A CN202110572733A CN113390696A CN 113390696 A CN113390696 A CN 113390696A CN 202110572733 A CN202110572733 A CN 202110572733A CN 113390696 A CN113390696 A CN 113390696A
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- 239000000956 alloy Substances 0.000 title claims abstract description 57
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 46
- 238000005260 corrosion Methods 0.000 title claims abstract description 46
- 230000007797 corrosion Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 52
- 238000000227 grinding Methods 0.000 claims abstract description 24
- 238000005498 polishing Methods 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000000861 blow drying Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 20
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910002065 alloy metal Inorganic materials 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 229910000531 Co alloy Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910000601 superalloy Inorganic materials 0.000 claims 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 abstract description 2
- 238000012356 Product development Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- 239000002085 irritant Substances 0.000 abstract description 2
- 231100000021 irritant Toxicity 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 abstract description 2
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SPZAGEJGELYZAM-UHFFFAOYSA-L copper sulfate hydrochloride Chemical compound Cl.[Cu+2].[O-]S([O-])(=O)=O SPZAGEJGELYZAM-UHFFFAOYSA-L 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention relates to the technical field of high-temperature alloy, in particular to a grain size corrosion method of high-temperature alloy, which selects at least three common high-temperature alloy materials as raw materials for a corrosion test aiming at the high-temperature alloy materials, cleans the surfaces of the test raw materials, cuts the high-temperature alloy materials into a plurality of alloy samples with the same size after ensuring that the test is not influenced, sequentially performs mechanical coarse grinding, fine grinding, polishing, cleaning and blow-drying on one side of each alloy sample, and distinguishes and places different materials for waiting for the test use, the solution can corrode high-temperature alloys of various matrixes, such as Fe-Ni base, Co base and the like, does not need to independently prepare the solution for a certain matrix alloy, improves the inspection efficiency, has less volatile irritant gas, saves and is environment-friendly, has very clear tissue structure and grain boundary, and can meet the requirements of new product development and new product tissue structure observation of a production enterprise, the grain size can be measured accurately.
Description
Technical Field
The invention relates to the technical field of high-temperature alloys, in particular to a grain size corrosion method of a high-temperature alloy.
Background
The high-temperature alloy is a metal material which can be stably used for a long time at the temperature of more than 600 ℃, has high-temperature oxidation resistance, corrosion resistance, excellent mechanical properties and the like, mainly comprises alloy materials such as iron nickel base, cobalt base and the like, is mainly used in the fields of manufacturing large-scale equipment such as aerospace, gas turbines and the like, and has more traditional corrosion methods for steel types, such as a copper sulfate hydrochloric acid absolute ethyl alcohol solution, aqua regia and a hydrochloric acid nitric acid solution.
Disclosure of Invention
The invention aims to provide a full-automatic plastic steel tooth implanted energy-saving motor to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a grain size corrosion method of a high-temperature alloy comprises the following steps:
the method comprises the following steps: selecting at least three common high-temperature alloy materials as raw materials for the corrosion test aiming at the high-temperature alloy materials;
step two: cleaning the surface of a test raw material, and respectively cutting the test raw material into a plurality of alloy samples with the same size after ensuring that the test is not influenced;
step three: sequentially carrying out mechanical coarse grinding, fine grinding, polishing, cleaning and blow-drying on one side of an alloy sample, and placing the alloy sample in different materials for waiting for a test;
step four: preparing a corrosion solution for a corrosion test according to the component proportion and the preparation method strictly;
step five: respectively containing the prepared corrosive solution into a plurality of test vessels, and then respectively placing the alloy samples into the test vessels for corrosion test;
step six: after the corrosion test is finished, taking out the alloy sample, transferring the alloy sample to a detection chamber to observe the corrosion degree of the grain size of the polished surface of the alloy sample, and recording and storing;
step seven: detection data obtained by the test and the corrosion test method are summarized, sorted and put into the file, and the later checking and comparison are convenient.
Preferably, the test raw material can be selected from raw materials for testing three common high-temperature alloy metals of iron nickel base, nickel base and cobalt base, and three alloy materials of iron nickel base, nickel base and cobalt base are respectively cut into three groups of alloy samples with the size of 10 x 20mm by cutting equipment.
Preferably, the mechanical coarse grinding and the fine grinding can be sequentially carried out by using 400-mesh, 800-mesh, 1000-mesh, 1500-mesh and 2000-mesh water sand paper for grinding, grinding and polishing the metallographic sample by using 2-4 micron diamond grinding paste on the test surface of the ground alloy sample, changing clean polishing cloth when the surface of the metallographic sample is smooth and has no scratch, and polishing by using distilled water for 1 minute to obtain the polishing test surface.
Preferably, the etching solution consists of ferric chloride, hydrochloric acid and water, the hydrochloric acid is analytically pure, the water is distilled water, and the etching solution is prepared according to the weight ratio of ferric chloride: hydrochloric acid: water =100 g: 200 ml: 100ml is prepared.
Preferably, the preparation method comprises the steps of sequentially weighing and measuring the ferric chloride, the hydrochloric acid and the water according to the preparation ratio of the ferric chloride, the hydrochloric acid and the water through a small balance and a measuring cylinder, then mixing and stirring the measured water and the hydrochloric acid through a glass rod, putting the ferric chloride after fully stirring for one minute, stopping stirring during adding until the ferric chloride is melted into a mixed solution of the water and the hydrochloric acid, and collecting the corrosive solution after standing for 5 minutes.
Preferably, the corrosion test can be carried out by directly placing the prepared alloy sample into a room-temperature corrosive liquid, keeping the polishing surface upward, and carrying out corrosion for 1-5 minutes, then taking out the corroded sample, sequentially washing with water and absolute ethyl alcohol, and drying by blowing.
Compared with the prior art, the invention has the beneficial effects that:
1. the solution can corrode high-temperature alloys of various matrixes, such as Fe-Ni, Co and the like, and the solution does not need to be prepared for a certain matrix alloy, so that the inspection efficiency is improved;
2. the volatile irritant gas is less, so that the environment is saved;
3. the microstructure and the crystal boundary are very clear, the microstructure can meet the requirements of new product development and new product microstructure observation of production enterprises, and the grain size can be conveniently and accurately measured.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
The invention provides a grain size corrosion method of a high-temperature alloy, which comprises the following steps:
the method comprises the following steps: selecting at least three common high-temperature alloy materials as raw materials for the corrosion test aiming at the high-temperature alloy materials;
step two: cleaning the surface of a test raw material, and respectively cutting the test raw material into a plurality of alloy samples with the same size after ensuring that the test is not influenced;
step three: sequentially carrying out mechanical coarse grinding, fine grinding, polishing, cleaning and blow-drying on one side of an alloy sample, and placing the alloy sample in different materials for waiting for a test;
step four: preparing a corrosion solution for a corrosion test according to the component proportion and the preparation method strictly;
step five: respectively containing the prepared corrosive solution into a plurality of test vessels, and then respectively placing the alloy samples into the test vessels for corrosion test;
step six: after the corrosion test is finished, taking out the alloy sample, transferring the alloy sample to a detection chamber to observe the corrosion degree of the grain size of the polished surface of the alloy sample, and recording and storing;
step seven: detection data obtained by the test and the corrosion test method are summarized, sorted and put into the file, and the later checking and comparison are convenient.
The test raw materials can be selected from iron-nickel-based, nickel-based and cobalt-based common high-temperature alloy metals for testing, and the iron-nickel-based, nickel-based and cobalt-based alloy metals are respectively cut into three groups of alloy samples with the sizes of 10 x 20mm by cutting equipment.
The mechanical coarse grinding and fine grinding can be sequentially carried out by grinding with 400-mesh, 800-mesh, 1000-mesh, 1500-mesh and 2000-mesh waterproof abrasive paper, grinding and polishing the metallographic specimen with 2-4 micron diamond grinding paste on the test surface of the ground alloy specimen, changing clean polishing cloth when the surface of the metallographic specimen is bright and smooth and has no scratch, and polishing with distilled water for 1 minute to obtain the polishing test surface.
The corrosion solution consists of ferric chloride, hydrochloric acid and water, the hydrochloric acid is analytically pure, the water is distilled water, and the corrosion solution is prepared according to the weight ratio of the ferric chloride: hydrochloric acid: water =100 g: 200 ml: 100ml is prepared.
The preparation method comprises the steps of sequentially weighing and measuring the high ferric chloride, the hydrochloric acid and the water according to the preparation ratio of the high ferric chloride, the hydrochloric acid and the water through a small balance and a measuring cylinder, then mixing and stirring the measured water and the hydrochloric acid through a glass rod, putting the high ferric chloride after fully stirring for one minute, adding the high ferric chloride without stopping stirring until the high ferric chloride is melted into a mixed solution of the water and the hydrochloric acid, standing for 5 minutes, and then collecting the corrosive solution.
The corrosion test can be carried out by directly putting the prepared alloy sample into room-temperature corrosive liquid, keeping the polishing surface upward, and carrying out corrosion for 1-5 minutes, then taking out the corroded sample, sequentially washing with water and absolute ethyl alcohol, and drying by blowing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A grain size corrosion method of high-temperature alloy is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: selecting at least three common high-temperature alloy materials as raw materials for the corrosion test aiming at the high-temperature alloy materials;
step two: cleaning the surface of a test raw material, and respectively cutting the test raw material into a plurality of alloy samples with the same size after ensuring that the test is not influenced;
step three: sequentially carrying out mechanical coarse grinding, fine grinding, polishing, cleaning and blow-drying on one side of an alloy sample, and placing the alloy sample in different materials for waiting for a test;
step four: preparing a corrosion solution for a corrosion test according to the component proportion and the preparation method strictly;
step five: respectively containing the prepared corrosive solution into a plurality of test vessels, and then respectively placing the alloy samples into the test vessels for corrosion test;
step six: after the corrosion test is finished, taking out the alloy sample, transferring the alloy sample to a detection chamber to observe the corrosion degree of the grain size of the polished surface of the alloy sample, and recording and storing;
step seven: detection data obtained by the test and the corrosion test method are summarized, sorted and put into the file, and the later checking and comparison are convenient.
2. The grain size corrosion method of a superalloy as claimed in claim 1, wherein: the test raw materials can be selected from iron-nickel-based, nickel-based and cobalt-based common high-temperature alloy metals for testing, and the iron-nickel-based, nickel-based and cobalt-based alloy metals are respectively cut into three groups of alloy samples with the sizes of 10 x 20mm by cutting equipment.
3. The grain size corrosion method of a superalloy as claimed in claim 2, wherein: the mechanical coarse grinding and fine grinding can be sequentially carried out by grinding with 400-mesh, 800-mesh, 1000-mesh, 1500-mesh and 2000-mesh waterproof abrasive paper, grinding and polishing the metallographic specimen with 2-4 micron diamond grinding paste on the test surface of the alloy specimen after grinding, changing clean polishing cloth when the surface of the metallographic specimen is bright and smooth and has no scratch, and polishing with distilled water for 1 minute to obtain the polishing test surface.
4. The grain size corrosion method of a superalloy as claimed in claim 1, wherein: the corrosion solution consists of ferric chloride, hydrochloric acid and water, the hydrochloric acid is analytically pure, the water is distilled water, and the corrosion solution is prepared according to the weight ratio of the ferric chloride: hydrochloric acid: water =100 g: 200 ml: 100ml is prepared.
5. The grain size corrosion method of a superalloy as claimed in claim 1, wherein: the preparation method comprises the steps of sequentially weighing and measuring the high ferric chloride, the hydrochloric acid and the water according to the preparation ratio of the high ferric chloride, the hydrochloric acid and the water through a small balance and a measuring cylinder, then mixing and stirring the measured water and the hydrochloric acid through a glass rod, putting the high ferric chloride after fully stirring for one minute, adding the high ferric chloride without stopping stirring until the high ferric chloride is melted into a mixed solution of the water and the hydrochloric acid, standing for 5 minutes, and then collecting the corrosive solution.
6. The grain size corrosion method of a superalloy as claimed in claim 1, wherein: the corrosion test can be carried out by directly placing the prepared alloy sample into room-temperature corrosive liquid, keeping the polishing surface upward, and carrying out corrosion for 1-5 minutes, then taking out the corroded sample, sequentially washing the corroded sample with water and absolute ethyl alcohol, and drying the sample by blowing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110572733.2A CN113390696A (en) | 2021-05-25 | 2021-05-25 | Grain size corrosion method of high-temperature alloy |
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| CN202110572733.2A CN113390696A (en) | 2021-05-25 | 2021-05-25 | Grain size corrosion method of high-temperature alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114112606A (en) * | 2021-11-08 | 2022-03-01 | 陕西飞机工业有限责任公司 | Preparation method of titanium alloy bolt head crystal grain streamline sample |
| CN114324426A (en) * | 2022-01-17 | 2022-04-12 | 西安石油大学 | Treatment method of high-temperature alloy EBSD test sample |
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2021
- 2021-05-25 CN CN202110572733.2A patent/CN113390696A/en active Pending
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| CN114112606A (en) * | 2021-11-08 | 2022-03-01 | 陕西飞机工业有限责任公司 | Preparation method of titanium alloy bolt head crystal grain streamline sample |
| CN114324426A (en) * | 2022-01-17 | 2022-04-12 | 西安石油大学 | Treatment method of high-temperature alloy EBSD test sample |
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