CN114717456B - High-temperature soluble aluminum alloy, preparation method and application - Google Patents
High-temperature soluble aluminum alloy, preparation method and application Download PDFInfo
- Publication number
- CN114717456B CN114717456B CN202210403519.9A CN202210403519A CN114717456B CN 114717456 B CN114717456 B CN 114717456B CN 202210403519 A CN202210403519 A CN 202210403519A CN 114717456 B CN114717456 B CN 114717456B
- Authority
- CN
- China
- Prior art keywords
- alloy
- temperature
- aluminum alloy
- soluble aluminum
- preserving heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 62
- 239000012535 impurity Substances 0.000 claims abstract description 43
- 238000005266 casting Methods 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000003723 Smelting Methods 0.000 claims abstract description 9
- 239000003079 shale oil Substances 0.000 claims abstract description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 54
- 239000003795 chemical substances by application Substances 0.000 claims description 36
- 239000002893 slag Substances 0.000 claims description 24
- 229910052782 aluminium Inorganic materials 0.000 claims description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 21
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 19
- 238000007670 refining Methods 0.000 claims description 15
- 238000001192 hot extrusion Methods 0.000 claims description 13
- 239000000155 melt Substances 0.000 claims description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 12
- -1 aluminum titanium boron Chemical group 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 12
- 229910018134 Al-Mg Inorganic materials 0.000 claims description 9
- 229910018140 Al-Sn Inorganic materials 0.000 claims description 9
- 229910018467 Al—Mg Inorganic materials 0.000 claims description 9
- 229910018564 Al—Sn Inorganic materials 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 239000001103 potassium chloride Substances 0.000 claims description 9
- 235000011164 potassium chloride Nutrition 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 9
- 229910018117 Al-In Inorganic materials 0.000 claims description 7
- 229910018229 Al—Ga Inorganic materials 0.000 claims description 7
- 229910018456 Al—In Inorganic materials 0.000 claims description 7
- 230000032683 aging Effects 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 235000002639 sodium chloride Nutrition 0.000 claims description 6
- 239000011775 sodium fluoride Substances 0.000 claims description 6
- 235000013024 sodium fluoride Nutrition 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 238000010309 melting process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
-
- 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
- C22C1/026—Alloys based on aluminium
-
- 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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/08—Down-hole devices using materials which decompose under well-bore conditions
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Powder Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a high-temperature soluble aluminum alloy, a preparation method and application thereof, wherein the aluminum alloy comprises the following elements in percentage by weight: 1.5wt% of Mg, 0.1wt% of Ga, 0.7wt% of In, 0.6wt% of Sn, and the balance of Al and unavoidable impurity elements. The soluble aluminum alloy is obtained by carrying out heat treatment and time-efficient treatment on the components after smelting and casting ingots. The soluble aluminum alloy material can be used as a material of a fracturing tool for shale oil and gas exploitation. The soluble aluminum alloy prepared by the invention has controllable dissolution in a high-temperature environment, good mechanical property and good dissolution rate.
Description
Technical Field
The invention belongs to the technical field of alloy preparation, and particularly relates to a high-temperature soluble aluminum alloy, a preparation method and application thereof.
Background
In recent years, oil and gas exploration is carried out, unconventional oil and gas resources in China are very abundant, shale gas and shale oil reserves are in the front of the world, and due to the fact that exploitation of shale gas and shale oil is relatively difficult, the unconventional oil and gas resources need to be developed by means of hydraulic fracturing and other technologies, and bridge plug research and development are one of the important technologies in the multilayer multistage segmented fracturing technology. The tool manufactured by the dissolvable material can be automatically dissolved in the underground environment after the operation is completed, so that the working procedures of manual drilling, grinding and recycling are omitted, the engineering risk is reduced, and the construction efficiency is improved.
The expansion ring is a part for fixing an object through expansion and contraction movements. The expander has a simple structure and is easy to assemble and disassemble, so that the expander is widely used in mechanical parts in various industries.
The aluminum alloy in China has rich output, low density, high specific strength, excellent electrical conductivity, thermal conductivity and corrosion resistance, and good plasticity, can be processed into various profiles, and is widely applied to the fields of aviation, aerospace, automobiles, ships and the like. When the soluble aluminum alloy all-metal bridge plug expander is used in a high-temperature environment, the common soluble aluminum alloy has poor high-temperature resistance, so that the tensile strength, the hardness and other mechanical properties of the material are reduced, meanwhile, the soluble aluminum alloy has high dissolution rate and poor controllability, and the mechanical index requirements required by working and the effective time required by completing operation cannot be provided due to high temperature, so that the application range of the expander is limited. Therefore, reasonable design of the proportion of each element and the technological parameters of the high-temperature soluble aluminum alloy material is an important technical problem, solves the problem, is hopeful to promote the development of the high-temperature high-performance soluble aluminum alloy material and improves the technical level of unconventional energy exploitation of shale oil gas and the like in China.
Disclosure of Invention
The invention aims to provide a high-temperature soluble aluminum alloy, a preparation method and application. The high-temperature soluble aluminum alloy material can be prepared by means of casting, hot extrusion, heat treatment and the like, so that the controlled degradation of the soluble aluminum alloy material in a high-temperature environment is realized, and the high-temperature soluble aluminum alloy material also has good mechanical properties and stable dissolution rate in the high-temperature environment.
In order to achieve the purpose, the technical scheme adopted by the invention is that the high-temperature soluble aluminum alloy material comprises the following elements in percentage by weight: 1.5wt% of Mg, 0.1wt% of Ga, 0.7wt% of In, 0.6wt% of Sn, and the balance of Al and unavoidable impurity elements.
Preferably, the tensile strength of the high-temperature soluble aluminum alloy is 120-140 MPa, and the elongation is 25-30%.
The invention also provides a preparation method of the high-temperature soluble aluminum alloy, which comprises the following steps:
step 1), weighing the elements according to the weight percentage, wherein Mg is introduced into the alloy as an Al-Mg intermediate alloy, ga is introduced into the alloy as an Al-Ga intermediate alloy, in is introduced into the alloy as an Al-In intermediate alloy, sn is introduced into the alloy as an Al-Sn intermediate alloy, and less than Al is introduced into the alloy as a pure aluminum ingot;
step 2), smelting and casting: under the protection of argon, firstly melting pure aluminum, and when the temperature of the molten liquid reaches 715-735 ℃, sequentially adding Al-Mg intermediate alloy, al-Ga intermediate alloy, al-In intermediate alloy and Al-Sn intermediate alloy into the molten aluminum for smelting; heating to 850-900 ℃ and preserving heat for 1-2 hours, refining after complete melting, preserving heat for 5-10 minutes at 850-870 ℃, then rapidly cooling to 50-80 ℃ at 5-8 ℃/s, then heating to 850-870 ℃, preserving heat for 30-40 minutes, and casting at constant temperature; casting the molten liquid in a mould, rapidly cooling to 300 ℃, and preserving heat for 7-8 hours at 300-400 ℃ after cooling to obtain an aluminum alloy cast ingot;
step 3) hot extrusion treatment: hot extrusion is carried out on the cast ingot to prepare a bar;
step 4) solution heat treatment: preserving heat at 440 ℃ for 1-2h, and preserving heat at 500 ℃ for 1-2h;
step 5) aging treatment: preserving heat at 80 ℃ for 8-12h, and air cooling to room temperature.
Preferably, in the step 2), adding a impurity removing agent for impurity removing and refining, wherein the impurity removing agent comprises sodium fluoride, sodium chloride and potassium chloride in a mass ratio of 1:1:1, a step of; the adding amount of the impurity removing agent is 2-3% of the total mass of the melt.
Preferably, in the step 2), slag removing agent is added to remove slag, wherein the slag removing agent is aluminum titanium boron wires, the components of the aluminum titanium boron wires are, in percentage by mass, 4.5-5.5% of Ti, 0.8-1.0% of B and the balance of Al, and the impurities are as follows: si <0.20%, fe <0.30%, V <0.25%, other elements <0.03%, and total impurity element content <0.10%; the addition amount of the slag forming agent is 2-3% of the total mass of the melt.
Preferably, in the step 4), the extrusion temperature is 380-420 ℃, the extrusion ratio is 10-20, and the extruded aluminum alloy is kept at the temperature of 150 ℃ for 7-8 hours.
The invention also provides application of the high-temperature soluble aluminum alloy in preparing fracturing tools for shale oil and gas exploitation. Such as an all-metal bridge plug expander.
Compared with the traditional soluble aluminum alloy, the soluble aluminum alloy prepared by the invention has the following beneficial effects:
(1) According to the high-temperature soluble aluminum alloy, the grain size of the ingot can be thinned by adding the elements Ga, in and Sn, the segregation of the ingot is reduced, and the thinning of the ingot structure and the stability of the dissolution property are ensured to a certain extent. Meanwhile, a refiner is added to further refine the grain size of the cast ingot.
(2) Compared with the powder metallurgy method, the high-temperature soluble aluminum alloy is prepared by a fusion casting method, eliminates the internal pores of the material, and further remarkably improves the mechanical property of the material.
(3) The soluble aluminum alloy material does not have a low-temperature phase and has good high-temperature resistance.
(4) The high-temperature soluble aluminum alloy prepared by the invention has the tensile strength of 120-140 MPa, the elongation of 25-30 percent and good dissolution rate in a high-temperature environment at 90 ℃.
Detailed Description
The reagents or materials used in the present invention are all commercially available, and unless otherwise specified, they are used in a manner conventional in the art or according to the product specifications.
The high-temperature soluble aluminum alloy adopted by the invention comprises the following elements in percentage by weight: 1.5wt% of Mg, 0.1wt% of Ga, 0.7wt% of In, 0.6wt% of Sn, and the balance of Al and unavoidable impurity elements.
The preparation method of the high-temperature soluble aluminum alloy comprises the following steps:
step 1), weighing the elements according to the weight percentage ratio of the components of the soluble aluminum alloy, introducing Mg into the alloy by using an Al-Mg intermediate alloy, introducing Ga into the alloy by using an Al-Ga intermediate alloy, introducing In into the alloy by using an Al-In intermediate alloy, introducing Sn into the alloy by using an Al-Sn intermediate alloy, and introducing less than Al into a pure aluminum ingot;
step 2), under the protection of argon, firstly melting pure aluminum, and when the temperature of the molten liquid reaches 715-735 ℃, sequentially adding an Al-Mg intermediate alloy, an Al-Ga intermediate alloy, an Al-In intermediate alloy and an Al-Sn intermediate alloy into the molten aluminum for smelting; heating to 850-900 ℃ and preserving heat for 1-2 hours, refining after complete melting, preserving heat for 5-10 minutes at 850-870 ℃, then rapidly cooling to 50-80 ℃ at 5-8 ℃/s, then heating to 850-870 ℃, preserving heat for 30-40 minutes, and casting at constant temperature; casting the molten liquid in a mould, rapidly cooling to 300 ℃, and preserving heat for 7-8 hours at 300-400 ℃ after cooling to obtain an aluminum alloy cast ingot;
adding a impurity removing agent for impurity removing and refining, wherein the impurity removing agent comprises sodium fluoride, sodium chloride and potassium chloride in a mass ratio of 1:1:1, a step of; the adding amount of the impurity removing agent is 2-3% of the total mass of the melt.
Adding a slag removing agent for removing slag, wherein the slag removing agent is aluminum titanium boron wires, the components of the aluminum titanium boron wires are, by mass, 4.5-5.5% of Ti, 0.8-1.0% of B and the balance of Al, wherein the impurities are as follows: si <0.20%, fe <0.30%, V <0.25%, other elements <0.03%, and total impurity element content <0.10%; the addition amount of the slag forming agent is 2-3% of the total mass of the melt.
Step 3) hot extrusion treatment: the extrusion temperature is 380-420 ℃, the extrusion ratio is 10-20, the extruded aluminum alloy is insulated for 7-8 hours under the environment of 150 ℃, and the cast ingot is manufactured into bars through hot extrusion;
step 4) solution heat treatment: preserving heat at 440 ℃ for 1-2h, and preserving heat at 500 ℃ for 1-2h;
step 5) aging treatment: preserving heat at 80 ℃ for 8-12h, and air cooling to room temperature.
The following describes the preferred embodiments in detail.
Example 1
The high-temperature soluble aluminum alloy comprises the following elements in percentage by weight: 1.5wt% of Mg, 0.1wt% of Ga, 0.7wt% of In, 0.6wt% of Sn, and the balance of Al and unavoidable impurity elements.
The preparation method comprises the following steps:
step 1), weighing the raw materials according to the proportion: weighing a pure aluminum ingot, an Al-Mg intermediate alloy, an Al-Ga intermediate alloy, an Al-In intermediate alloy and an Al-Sn intermediate alloy.
And (3) after the raw materials are weighed, polishing the surface of the raw materials by sand, and removing the surface oxide layer.
Step 2), smelting and casting: firstly, placing pure aluminum in a graphite crucible for heating and melting, using argon for protection in the melting process, after the pure aluminum is completely melted, adding each intermediate alloy into the molten aluminum after the temperature of the molten aluminum is increased to 715 ℃, continuously increasing the temperature to 850 ℃, preserving the heat for 2 hours, and confirming the complete melting for refining treatment; after the aluminum alloy melt is kept at 850 ℃ for 10 minutes, the temperature is rapidly reduced by 50 ℃ at 5 ℃/s, then the temperature is increased to 850 ℃, the temperature is kept for 40 minutes, and constant-temperature casting is carried out; casting the molten liquid in a mould, rapidly cooling to 300 ℃, and preserving heat for 8 hours at 300 ℃ after cooling to obtain an aluminum alloy cast ingot;
refining: adding a impurity removing agent for impurity removing and refining, wherein the impurity removing agent comprises sodium fluoride, sodium chloride and potassium chloride in a mass ratio of 1:1:1, a step of; the adding amount of the impurity removing agent is 2% of the total mass of the melt.
Adding a slag removing agent for removing slag, wherein the slag removing agent is aluminum titanium boron wires, the components of the aluminum titanium boron wires are, in percentage by mass, 4.5% of Ti, 1.0% of B and the balance of Al, and the impurities are as follows: si <0.20%, fe <0.30%, V <0.25%, other elements <0.03%, and total impurity element content <0.10%; the addition amount of the slag forming agent is 3 percent of the total mass of the melt.
Step 3) hot extrusion treatment: the extrusion temperature is 420 ℃, the extrusion ratio is 20, the extruded aluminum alloy is insulated for 7 hours in an environment of 150 ℃, and the cast ingot is manufactured into bars through hot extrusion;
step 4) solution heat treatment: preserving heat at 440 ℃ for 1h, and preserving heat at 500 ℃ for 1h;
step 5) aging treatment: preserving the heat for 8 hours at 80 ℃, and air-cooling to room temperature.
The high temperature soluble aluminum alloy obtained by the above steps was tested with a room temperature tensile strength of 130MPa and an elongation of 27.5%, and had a good dissolution rate in a 3% kcl solution in a high temperature environment at 90 ℃.
Example 2
The high-temperature soluble aluminum alloy comprises the following elements in percentage by weight: 1.5wt% of Mg, 0.1wt% of Ga, 0.7wt% of In, 0.6wt% of Sn, and the balance of Al and unavoidable impurity elements.
The preparation method comprises the following steps:
step 1), weighing the raw materials according to the proportion: weighing a pure aluminum ingot, an Al-Mg intermediate alloy, an Al-Ga intermediate alloy, an Al-In intermediate alloy and an Al-Sn intermediate alloy.
And (3) after the raw materials are weighed, polishing the surface of the raw materials by sand, and removing the surface oxide layer.
Step 2), smelting and casting: firstly, placing pure aluminum in a graphite crucible for heating and melting, using argon for protection in the melting process, after the pure aluminum is completely melted, adding each intermediate alloy after the temperature of the melt is raised to 735 ℃, continuously raising the temperature to 900 ℃, preserving the heat for 1h, and confirming the complete melting for refining treatment; after the aluminum alloy melt is kept at 870 ℃ for 5 minutes, the temperature is rapidly reduced to 80 ℃ at 8 ℃/s, then the temperature is increased to 870 ℃, the temperature is kept for 30 minutes, and constant-temperature casting is carried out; casting the molten liquid in a mould, rapidly cooling to 300 ℃, and preserving heat for 7.5 hours at 350 ℃ after cooling to obtain an aluminum alloy cast ingot;
refining: adding a impurity removing agent for impurity removing and refining, wherein the impurity removing agent comprises sodium fluoride, sodium chloride and potassium chloride in a mass ratio of 1:1:1, a step of; the adding amount of the impurity removing agent is 3% of the total mass of the melt.
Adding a slag removing agent for removing slag, wherein the slag removing agent is aluminum titanium boron wires, the components of the aluminum titanium boron wires are, by mass percent, 5.5% of Ti, 0.8% of B and the balance of Al, and the impurities are as follows: si <0.20%, fe <0.30%, V <0.25%, other elements <0.03%, and total impurity element content <0.10%; the addition amount of the slag forming agent is 2 percent of the total mass of the melt.
Step 3) hot extrusion treatment: the extrusion temperature is 400 ℃, the extrusion ratio is 15, the extruded aluminum alloy is insulated for 7 hours in the environment of 150 ℃, and the cast ingot is manufactured into bars through hot extrusion;
step 4) solution heat treatment: preserving heat at 440 ℃ for 1.5 hours, and preserving heat at 500 ℃ for 1.5 hours;
step 5) aging treatment: preserving the temperature at 80 ℃ for 10 hours, and air-cooling to room temperature.
The high temperature soluble aluminum alloy obtained by the above steps is tested, the room temperature tensile strength is 140MPa, the elongation is 30%, and the 3% KCl solution has good dissolution rate in a high temperature environment of 90 ℃.
Example 3
The high-temperature soluble aluminum alloy comprises the following elements in percentage by weight: 1.5wt% of Mg, 0.1wt% of Ga, 0.7wt% of In, 0.6wt% of Sn, and the balance of Al and unavoidable impurity elements.
The preparation method comprises the following steps:
step 1), weighing the raw materials according to the proportion: weighing a pure aluminum ingot, an Al-Mg intermediate alloy, an Al-Ga intermediate alloy, an Al-In intermediate alloy and an Al-Sn intermediate alloy.
And (3) after the raw materials are weighed, polishing the surface of the raw materials by sand, and removing the surface oxide layer.
Step 2), smelting and casting: firstly, placing pure aluminum in a graphite crucible for heating and melting, using argon for protection in the melting process, after the pure aluminum is completely melted, adding each intermediate alloy into the molten aluminum after the temperature of the molten aluminum is raised to 725 ℃, continuously raising the temperature to 880 ℃, preserving the heat for 2 hours, and confirming the complete melting for refining treatment; after the aluminum alloy melt is kept at 860 ℃ for 10 minutes, the temperature is rapidly reduced by 70 ℃ at 7 ℃/s, then the temperature is increased to 865 ℃, the temperature is kept for 40 minutes, and constant-temperature casting is carried out; casting the molten liquid in a mould, rapidly cooling to 300 ℃, and preserving heat for 7 hours at 400 ℃ after cooling to obtain an aluminum alloy cast ingot;
refining: adding a impurity removing agent for impurity removing and refining, wherein the impurity removing agent comprises sodium fluoride, sodium chloride and potassium chloride in a mass ratio of 1:1:1, a step of; the adding amount of the impurity removing agent is 2.5 percent of the total mass of the melt.
Adding a slag removing agent for removing slag, wherein the slag removing agent is aluminum titanium boron wires, the components of the aluminum titanium boron wires are, by mass percent, 5% of Ti, 0.9% of B and the balance of Al, and the impurities are as follows: si <0.20%, fe <0.30%, V <0.25%, other elements <0.03%, and total impurity element content <0.10%; the addition amount of the slag forming agent is 2.5 percent of the total mass of the melt.
Step 3) hot extrusion treatment: the extrusion temperature is 380 ℃, the extrusion ratio is 10, the extruded aluminum alloy is insulated for 8 hours in an environment of 150 ℃, and the cast ingot is manufactured into bars through hot extrusion;
step 4) solution heat treatment: preserving heat at 440 ℃ for 2 hours, and preserving heat at 500 ℃ for 2 hours;
step 5) aging treatment: preserving the heat for 12h at 80 ℃, and air-cooling to room temperature.
The high temperature soluble aluminum alloy obtained by the above steps is tested, the room temperature tensile strength is 120MPa, the elongation is 25%, and the 3% KCl solution has good dissolution rate in a high temperature environment of 90 ℃.
From the above, the high temperature soluble aluminum alloy prepared by the invention has 120-140 MPa tensile strength and 25-30% elongation, and has good dissolution rate in 3% KCl solution in a high temperature environment of 90 ℃. The material is controlled to be dissolved when being used in a high-temperature environment, and the material also has good mechanical property and stable dissolution rate in the high-temperature environment.
The prepared high-temperature soluble aluminum alloy can be used for manufacturing fracturing tools for shale oil and gas exploitation, such as all-metal bridge plug expander rings.
Claims (4)
1. The high-temperature soluble aluminum alloy comprises the following elements in percentage by weight: 1.5wt% of Mg, 0.1wt% of Ga, 0.7wt% of In, 0.6wt% of Sn, and the balance of Al and unavoidable impurity elements, wherein the high-temperature soluble aluminum alloy has 120-140 MPa of tensile strength and 25-30% of elongation;
the preparation method comprises the following steps:
step 1), weighing the elements according to the weight percentage, wherein Mg is introduced into the alloy as an Al-Mg intermediate alloy, ga is introduced into the alloy as an Al-Ga intermediate alloy, in is introduced into the alloy as an Al-In intermediate alloy, sn is introduced into the alloy as an Al-Sn intermediate alloy, and less than Al is introduced into the alloy as a pure aluminum ingot;
step 2), smelting and casting: under the protection of argon, firstly melting pure aluminum, and when the temperature of the molten liquid reaches 715-735 ℃, sequentially adding Al-Mg intermediate alloy, al-Ga intermediate alloy, al-In intermediate alloy and Al-Sn intermediate alloy into the molten aluminum for smelting; heating to 850-900 ℃ and preserving heat for 1-2 hours, refining after complete melting, preserving heat for 5-10 minutes at 850-870 ℃, then rapidly cooling to 50-80 ℃ at 5-8 ℃/s, then heating to 850-870 ℃, preserving heat for 30-40 minutes, and casting at constant temperature; casting the molten liquid in a mould, rapidly cooling to 300 ℃, and preserving heat for 7-8 hours at 300-400 ℃ after cooling to obtain an aluminum alloy cast ingot;
step 3) hot extrusion treatment: hot extrusion is carried out on the cast ingot to prepare a bar, wherein the extrusion temperature is 380-420 ℃, the extrusion ratio is 10-20, and the extruded aluminum alloy is insulated for 7-8h under the environment of 150 ℃;
step 4) solution heat treatment: preserving heat at 440 ℃ for 1-2h, and preserving heat at 500 ℃ for 1-2h;
step 5) aging treatment: preserving heat at 80 ℃ for 8-12h, and air cooling to room temperature.
2. The high-temperature soluble aluminum alloy according to claim 1, wherein in the step 2), a impurity removing agent is added for impurity removing and refining, and the impurity removing agent comprises sodium fluoride, sodium chloride and potassium chloride in a mass ratio of 1:1:1, a step of; the adding amount of the impurity removing agent is 2-3% of the total mass of the melt.
3. The high-temperature soluble aluminum alloy according to claim 1, wherein in the step 2), slag is removed by adding a slag removing agent, wherein the slag removing agent is aluminum titanium boron wires, and the aluminum titanium boron wires comprise, by mass, 4.5-5.5% of Ti, 0.8-1.0% of B and the balance of Al, wherein impurities are as follows: si <0.20%, fe <0.30%, V <0.25%, other elements <0.03%, and total impurity element content <0.10%; the addition amount of the slag forming agent is 2-3% of the total mass of the melt.
4. Use of the high temperature soluble aluminum alloy of claim 1 in the manufacture of a fracturing tool for shale oil and gas exploitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210403519.9A CN114717456B (en) | 2022-04-18 | 2022-04-18 | High-temperature soluble aluminum alloy, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210403519.9A CN114717456B (en) | 2022-04-18 | 2022-04-18 | High-temperature soluble aluminum alloy, preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114717456A CN114717456A (en) | 2022-07-08 |
| CN114717456B true CN114717456B (en) | 2023-07-28 |
Family
ID=82244226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210403519.9A Active CN114717456B (en) | 2022-04-18 | 2022-04-18 | High-temperature soluble aluminum alloy, preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114717456B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005051A (en) * | 2023-01-16 | 2023-04-25 | 中南大学 | Aluminum alloy capable of being rapidly dissolved in neutral medium and preparation method and application thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07116541B2 (en) * | 1985-11-29 | 1995-12-13 | 日産自動車株式会社 | Aluminum-based bearing alloy and method for producing the same |
| US8211247B2 (en) * | 2006-02-09 | 2012-07-03 | Schlumberger Technology Corporation | Degradable compositions, apparatus comprising same, and method of use |
| US9469892B2 (en) * | 2010-10-11 | 2016-10-18 | Engineered Performance Materials Company, Llc | Hot thermo-mechanical processing of heat-treatable aluminum alloys |
| CN108251721B (en) * | 2018-01-23 | 2020-01-10 | 中南大学 | High-strength degradable aluminum alloy and preparation method and application thereof |
| CN114015913A (en) * | 2020-10-30 | 2022-02-08 | 青岛大地创鑫科技有限公司 | High-strength soluble aluminum alloy and preparation method thereof |
-
2022
- 2022-04-18 CN CN202210403519.9A patent/CN114717456B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| In对Al-Mg-Cu-Sn-Ga合金组织与性能的影响;王梦凡;肖代红;孙伯儒;***;马运柱;;特种铸造及有色合金(12);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114717456A (en) | 2022-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109161769B (en) | Functional rapidly-soluble rare earth magnesium alloy material and preparation method thereof | |
| CN102409213B (en) | Preparation method of high-strength magnesium alloy enhanced by heat treatment | |
| CN101353747B (en) | Die-casting heat resisting magnesium alloy and preparation thereof | |
| CN101514409B (en) | A method for preparing in situ MgSi particle reinforced metal matrix composite | |
| CN109182861A (en) | A kind of plastic deformation magnesium alloy and preparation method thereof | |
| CN101413079A (en) | Cobaltiferous aluminum alloy material and preparation thereof | |
| CN102626821A (en) | Method for connecting semi-solid materials into whole | |
| CN114717456B (en) | High-temperature soluble aluminum alloy, preparation method and application | |
| CN111020322A (en) | High-strength high-toughness aluminum-lithium alloy plate for aerospace and manufacturing method thereof | |
| CN114686734A (en) | High-ductility soluble aluminum alloy, preparation method and application | |
| CN115558825B (en) | High-heat-conductivity high-strength and high-toughness die-casting aluminum alloy and preparation method thereof | |
| CN103074515A (en) | Novel high-conductivity free-cutting selenium copper alloy material and preparation method thereof | |
| CN110042281B (en) | Cast aluminum alloy and preparation method thereof | |
| CN103589926A (en) | Hot-extruded magnesium alloy and preparation method thereof | |
| CN101289721B (en) | High manganese-containing magnesium-manganese intermediate alloy and preparation | |
| CN102634691B (en) | Manufacturing method of high-strength and high-corrosion-resistance cupronickel alloy | |
| CN116875839B (en) | Aluminum lithium alloy profile and preparation method thereof | |
| CN110468317A (en) | Magnesium alloy and preparation method thereof with excellent temperature-room type plasticity | |
| CN101871068A (en) | High-strength high-plasticity magnesium alloy comprising tin and aluminium and preparation method thereof | |
| CN114752827B (en) | Low-temperature soluble aluminum alloy and application thereof | |
| CN110819917A (en) | Method for in-situ synthesis of high-length-diameter ratio whisker reinforced aluminum matrix composite by hot isostatic pressing | |
| CN113897567B (en) | Homogenization thermomechanical treatment method for rapidly refining and homogenizing cast aluminum-lithium alloy | |
| CN104928548B (en) | It is a kind of suitable for high-strength heat-resistant magnesium alloy of sand casting and preparation method thereof | |
| CN109371301A (en) | A kind of room temperature high plastic magnesium alloy and preparation method thereof | |
| CN109097626A (en) | A kind of metastable β Titanium-alloy with high damping characteristic and aging stability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |