CN114807690A - Plastic aluminum lithium alloy and preparation method thereof - Google Patents
Plastic aluminum lithium alloy and preparation method thereof Download PDFInfo
- Publication number
- CN114807690A CN114807690A CN202210454151.9A CN202210454151A CN114807690A CN 114807690 A CN114807690 A CN 114807690A CN 202210454151 A CN202210454151 A CN 202210454151A CN 114807690 A CN114807690 A CN 114807690A
- Authority
- CN
- China
- Prior art keywords
- percent
- aluminum
- temperature
- alloy
- refining
- 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.)
- Pending
Links
- 229910001148 Al-Li alloy Inorganic materials 0.000 title claims abstract description 31
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000001989 lithium alloy Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011777 magnesium Substances 0.000 claims abstract description 19
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 10
- 239000011701 zinc Substances 0.000 claims abstract description 10
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 9
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 9
- 239000010936 titanium Substances 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000007670 refining Methods 0.000 claims description 41
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 32
- 238000001125 extrusion Methods 0.000 claims description 17
- 229910052786 argon Inorganic materials 0.000 claims description 16
- 238000003723 Smelting Methods 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000000265 homogenisation Methods 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 11
- 239000000155 melt Substances 0.000 claims description 11
- 238000004321 preservation Methods 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000010309 melting process Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 229910000676 Si alloy Inorganic materials 0.000 claims description 3
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 2
- -1 aluminum-manganese Chemical compound 0.000 claims description 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 239000004615 ingredient Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
-
- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention relates to a plastic aluminum-lithium alloy and a preparation method thereof, belonging to the technical field of aluminum alloys. Comprises the following components in percentage by weight: 4 to 6 percent of silicon, 0 to 0.15 percent of iron, 0 to 0.04 percent of copper, 0.4 to 0.6 percent of manganese, 0 to 0.3 percent of magnesium, 0 to 0.01 percent of zinc, 0 to 0.1 percent of titanium, 0 to 0.02 percent of nickel, 0.9 to 3 percent of lithium, and the balance of aluminum and other inevitable impurities. The invention also provides a method for preparing the plastic aluminum-lithium alloy. The plastic aluminum lithium alloy provided by the invention has the advantages of small density, light weight, good quality, high specific strength, high specific rigidity, corrosion resistance, superplasticity and better fluidity.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy, and particularly relates to a plastic aluminum-lithium alloy and a preparation method thereof.
Background
Aluminum alloys are the most widely used class of non-ferrous structural materials in industry and have found a number of applications in the aerospace, automotive, mechanical manufacturing, marine and chemical industries. With the rapid development of scientific technology and industrial economy in recent years, the demand for high-strength aluminum alloy welded structural parts is increasing day by day.
Because the aluminum alloy has low density, but higher strength, which is close to or exceeds that of high-quality steel, has good plasticity, can be processed into various sections, has excellent electrical conductivity, thermal conductivity and corrosion resistance, is widely used in industry, and is second to steel in use amount.
The aluminum-lithium alloy has the advantages of low density, high specific strength and specific stiffness, excellent low-temperature performance and corrosion resistance, good superplasticity and the like. The aluminum lithium alloy is used for replacing the conventional aluminum alloy, so that the structural mass is reduced by 10-15%, the rigidity is improved by 15-20%, and the aluminum lithium alloy is an ideal novel lightweight material.
However, due to the physical properties of lithium element such as high chemical activity and low density, the aluminum lithium alloy is subjected to component design, casting, plastic forming and heat treatment, and the processing difficulty and technical complexity of each link are far greater than those of other aluminum alloy materials. This presents great difficulties to the manufacturer.
Disclosure of Invention
Aiming at the problem of high difficulty in designing and processing components of the aluminum-lithium alloy in the prior art, the invention provides a plastic aluminum-lithium alloy and a preparation method thereof, so as to solve the problem.
A plastic aluminum lithium alloy comprises the following components in percentage by weight: 4 to 6 percent of silicon, 0 to 0.15 percent of iron, 0 to 0.04 percent of copper, 0.4 to 0.6 percent of manganese, 0 to 0.3 percent of magnesium, 0 to 0.01 percent of zinc, 0 to 0.1 percent of titanium, 0 to 0.02 percent of nickel, 0.9 to 3 percent of lithium, and the balance of aluminum and other inevitable impurities. The sum of the mass percentages of the components is 100 percent.
Preferably, the composition comprises the following components in percentage by weight: 4.5 to 5.5 percent of silicon, 0.1 percent of iron, 0.01 percent of copper, 0.45 to 0.55 percent of manganese, 0.1 to 0.2 percent of magnesium, 0.01 percent of zinc, 0.05 to 0.08 percent of titanium, 0.01 percent of nickel, 1.5 to 2.5 percent of lithium, and the balance of aluminum and other inevitable impurities. The sum of the mass percentages of the components is 100 percent.
The method for preparing the plastic aluminum lithium alloy comprises the following steps: (1) preparing materials; (2) melting; (3) refining (4) homogenizing; (5) and (4) extruding.
Preferably, the step (1) is: according to the alloy proportion, a pure aluminum ingot, aluminum-silicon alloy with the content of 50 percent and aluminum-manganese alloy with the content of 20 percent are added into a smelting furnace for melting.
Preferably, the step (2) is: and the electromagnetic stirrer is started to enhance stirring in the melting process, so that the nonuniformity of temperature and components is prevented. And introducing argon into the smelting furnace when the alloy is melted to 750-780 ℃, adding 5% of aluminum-lithium alloy, and adding pure magnesium blocks at 720-740 ℃.
Preferably, the step (3) is: the granular refining agent is selected to play a role in adsorbing and dissolving the oxide inclusions in the melt. And controlling the refining temperature at 750-780 ℃, introducing argon into the smelting furnace for 2-3 min, and then introducing the argon-blown particle refining agent into the melt for refining and purification, wherein the refining time is 15-20 min, and no dead angle exists in refining. And (4) filtering on line, and baking the filter plate for 30-50 min to a red hot state for casting.
Preferably, the step (4) is: there is severe dendrite segregation and a large amount of unmelted second phase particles in the cast structure of the ingot. Therefore, the aluminum alloy is subjected to a high-temperature homogenization treatment for a long time before extrusion to achieve a uniform composition, a reduced size of the second phase particles, and an improved work formability. The homogenization treatment is a key step in the alloy production process, and the microstructure morphology after the homogenization treatment directly influences the deformation behavior, the formability and the final mechanical property in the subsequent processing process. And (3) selecting a homogenization system: the temperature rise time is more than or equal to 6 hours, the homogenization temperature is 490-510 ℃, and the heat preservation time is more than or equal to 16 hours.
Preferably, the step (5) is: the heating temperature of the cast ingot is 470 +/-5 ℃, the temperature of an extrusion die is 420 +/-5 ℃, the temperature of the die is 450 +/-10 ℃, the heat preservation time is 6-8 hours, the heat preservation time of a low-temperature furnace is less than or equal to 24 hours, and the extrusion speed is 2 +/-0.5 mm/min.
The invention has the beneficial effects that:
(1) the plastic aluminum lithium alloy provided by the invention has the advantages of small density, light weight, good quality, high specific strength, high specific rigidity, corrosion resistance, superplasticity and better fluidity.
(2) The invention improves the strength and plasticity of the aluminum-silicon alloy by strictly controlling the contents of iron, copper and zinc. The aluminum lithium alloy has high silicon content, so that the crystallization temperature of silicon can be close to a eutectic point, the formation of shrinkage porosity defects in the alloy can be greatly reduced, the density of internal tissues is obviously improved, and the plasticity of the alloy is further improved. The aluminum alloy of the invention has low magnesium content, although the magnesium element can improve the strength of the alloy, the plasticity of the alloy can be simultaneously reduced, and the undissolved Mg can be reduced when the magnesium content is too high 2 The distribution of the Si phase in the grain boundary can greatly influence the plasticity of the aluminum lithium alloy. The invention selects a uniform temperature raising and high temperature long-time heat preservation homogenization system, and is beneficial to the transformation of unbalanced crystalline structure, the sufficient dissolution of the second phase, the uniformity of chemical components in the crystal and the dissolution and diffusion of soluble metal compounds and strengthening phases enriched on the dendritic crystal boundary.
(3) The material is used for light new energy automobiles, automobile parts and the like.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be 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.
Example 1
A preparation method of a plastic aluminum lithium alloy comprises the following specific steps:
(1) ingredients
The raw materials are mixed according to the following weight percentage: 4% of silicon, 0.05% of iron, 0.01% of copper, 0.4% of manganese, 0.1% of magnesium, 0.01% of zinc, 0.05% of titanium, 0.01% of nickel, 0.9% of lithium, and the balance of aluminum and other inevitable impurities.
(2) Melting stock
And the electromagnetic stirrer is started to enhance stirring in the melting process, so that the nonuniformity of temperature and components is prevented. When the alloy is melted to 750 ℃, argon is introduced into a smelting furnace, 5 percent of aluminum-lithium alloy is added, and pure magnesium blocks are added at 720 ℃.
(3) Refining
The granular refining agent is selected to play a role in adsorbing and dissolving the oxide inclusions in the melt. The refining temperature is controlled at 750 ℃, argon is introduced into the smelting furnace for 2min, and then the particle refining agent is blown by argon and carried into the melt for refining and purification, the refining time is 15 min, and no dead angle exists in refining. And (4) filtering on line, and baking the filter plate for 30min to a red hot state for casting.
(4) Homogenizing
The temperature rise time is 6 hours, the homogenization temperature is 490-510 ℃, and the heat preservation time is 16 hours.
(5) Extrusion
The ingot heating temperature is 465 ℃, the extrusion die temperature is 415 ℃, the die temperature is 440 ℃, the temperature is kept for 6 hours, the temperature is kept for 350 ℃ for 18 hours by a low-temperature furnace, and the extrusion speed is 1.5 mm/min.
Example 2
A preparation method of a plastic aluminum lithium alloy comprises the following specific steps:
(1) ingredients
The raw materials are mixed according to the following weight percentage: 4.5% of silicon, 0.1% of iron, 0.01% of copper, 0.45% of manganese, 0.2% of magnesium, 0.01% of zinc, 0.05% of titanium, 0.01% of nickel, 1.5% of lithium and the balance of aluminum and other inevitable impurities.
(2) Melting stock
And the electromagnetic stirrer is started to enhance stirring in the melting process, so that the nonuniformity of temperature and components is prevented. When the magnesium alloy is melted to 760 ℃, argon is introduced into a smelting furnace, 5 percent of aluminum-lithium alloy is added, and a pure magnesium block is added at 725 ℃.
(3) Refining
The granular refining agent is selected to play a role in adsorbing and dissolving the oxide inclusions in the melt. Controlling the refining temperature at 760 ℃, introducing argon into the smelting furnace for 2min, blowing a particle refining agent into the melt through the argon to carry out refining purification, wherein the refining time is 15 min, and no dead angle exists in the refining. And (4) filtering on line, and baking the filter plate for 35min to a red hot state for casting.
(4) Homogenizing
The temperature rise time is 6 hours, the homogenization temperature is 500 ℃, and the heat preservation time is 16 hours.
(5) Extrusion
The ingot heating temperature is 470 ℃, the extrusion die temperature is 420 ℃, the die temperature is 450 ℃, the temperature is kept for 7 hours, the low-temperature furnace is kept for 350 ℃ for 24 hours, and the extrusion speed is 2 mm/min.
Example 3
A preparation method of a plastic aluminum lithium alloy comprises the following specific steps:
(1) ingredients
The raw materials are mixed according to the following weight percentage: 5.5% of silicon, 0.1% of iron, 0.01% of copper, 0.55% of manganese, 0.1% of magnesium, 0.01% of zinc, 0.08% of titanium, 0.01% of nickel, 2.5% of lithium and the balance of aluminum and other inevitable impurities.
(2) Melting stock
And the electromagnetic stirrer is started to enhance stirring in the melting process, so that the nonuniformity of temperature and components is prevented. When the temperature is melted to 770 ℃, argon is introduced into a smelting furnace, 5 percent of aluminum-lithium alloy is added, and pure magnesium blocks are added at 730 ℃.
(3) Refining
The granular refining agent is selected to play a role in adsorbing and dissolving the oxide inclusions in the melt. The refining temperature is controlled at 770 ℃, argon is introduced into the smelting furnace for 3min, and then the particle refining agent is blown by argon and carried into the melt for refining and purification, the refining time is 20 min, and no dead angle exists in refining. And (4) filtering on line, and baking the filter plate for 40min to a red hot state for casting.
(4) Homogenizing
The temperature rise time is 7 hours, the homogenization temperature is 510 ℃, and the heat preservation time is 18 hours.
(5) Extrusion
The ingot heating temperature is 470 ℃, the extrusion die temperature is 420 ℃, the die temperature is 450 ℃, the temperature is kept for 7 hours, the low-temperature furnace is kept for 350 ℃ for 24 hours, and the extrusion speed is 2 mm/min.
Example 4
A preparation method of a plastic aluminum lithium alloy comprises the following specific steps:
(1) ingredients
The raw materials are mixed according to the following weight percentage: 6% of silicon, 0.15% of iron, 0.02% of copper, 0.6% of manganese, 0.3% of magnesium, 0.01% of zinc, 0.1% of titanium, 0.02% of nickel, 3% of lithium and the balance of aluminum and other inevitable impurities.
(2) Melting stock
And the electromagnetic stirrer is started to enhance stirring in the melting process, so that the nonuniformity of temperature and components is prevented. When the mixture is melted to 780 ℃, argon is introduced into the smelting furnace, 5 percent of aluminum-lithium alloy is added, and pure magnesium blocks are added at 740 ℃.
(3) Refining
The granular refining agent is selected to play a role in adsorbing and dissolving the oxide inclusions in the melt. The refining temperature is controlled to be 780 ℃, argon is introduced into the smelting furnace for 3min, then the particle refining agent is blown by argon and carried into the melt for refining and purification, the refining time is 20 min, and no dead angle exists in refining. And (4) filtering on line, and baking the filter plate for 50min to a red hot state for casting.
(4) Homogenizing
The temperature rise time is 7 hours, the homogenization temperature is 510 ℃, and the heat preservation time is 18 hours.
(5) Extrusion
The heating temperature of the cast ingot is 475 ℃, the temperature of the extrusion die is 425 ℃, the temperature of the die is 460 ℃, the temperature is kept for 8 hours, the temperature of the low-temperature furnace is kept for 350 ℃ for 24 hours, and the extrusion speed is 2.5 mm/min.
Test example
The aluminum lithium alloys prepared in examples 1 to 4 were subjected to the related tests, and the specific test results are shown in table 1 below:
TABLE 1 test results
| Tensile strength/Pa | Yield strength/Pa | Elongation/degree of | Hardness of | |
| Example 1 | 630 | 596 | 12 | 175 |
| Example 2 | 635 | 596 | 13 | 177 |
| Example 3 | 655 | 610 | 15 | 180 |
| Example 4 | 650 | 605 | 13 | 170 |
In summary, the tensile strength, yield strength, elongation and hardness of example 3 are all at the best values, while the tensile strength, yield strength, elongation and hardness of examples 2 and 4 are the second best values, and the tensile strength, yield strength, elongation and hardness of example 1 are the worst.
Although the present invention has been described in detail by way of preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions should be within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure and the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The plastic aluminum-lithium alloy is characterized by comprising the following components in percentage by weight: 4 to 6 percent of silicon, 0 to 0.15 percent of iron, 0 to 0.04 percent of copper, 0.4 to 0.6 percent of manganese, 0 to 0.3 percent of magnesium, 0 to 0.01 percent of zinc, 0 to 0.1 percent of titanium, 0 to 0.02 percent of nickel, 0.9 to 3 percent of lithium, and the balance of aluminum and other inevitable impurities.
2. The plastic aluminum lithium alloy of claim 1, comprising the following components in weight percent: 4.5 to 5.5 percent of silicon, 0.1 percent of iron, 0.01 percent of copper, 0.45 to 0.55 percent of manganese, 0.1 to 0.2 percent of magnesium, 0.01 percent of zinc, 0.05 to 0.08 percent of titanium, 0.01 percent of nickel, 1.5 to 2.5 percent of lithium, and the balance of aluminum and other inevitable impurities.
3. A method of making a malleable aluminum lithium alloy, as described in claim 1, comprising the steps of: (1) preparing materials; (2) melting; (3) refining (4) homogenizing; (5) and (4) extruding.
4. The method of claim 3, wherein step (1) is: according to the alloy proportion, a pure aluminum ingot, aluminum-silicon alloy with the content of 50 percent and aluminum-manganese alloy with the content of 20 percent are added into a smelting furnace for melting.
5. The method of claim 3, wherein the step (2) is: starting an electromagnetic stirrer to strengthen stirring in the melting process; and introducing argon into the smelting furnace when the alloy is melted to 750-780 ℃, adding 5% of aluminum-lithium alloy, and adding pure magnesium blocks at 720-740 ℃.
6. The method of claim 3, wherein step (3) is: selecting a granular refining agent; controlling the refining temperature at 750-780 ℃, introducing argon into the smelting furnace for 2-3 min, and then introducing the argon-blown particle refining agent into the melt for refining and purification, wherein the refining time is 15-20 min; and (5) filtering on line, and baking the filter plate for 30-50 min to a red hot state for casting.
7. The method of claim 3, wherein in the step (4), the homogenization parameters are: the temperature rise time is more than or equal to 6 hours, the homogenization temperature is 490-510 ℃, and the heat preservation time is more than or equal to 16 hours.
8. The method of claim 3, wherein the step (5) is: the heating temperature of the cast ingot is 470 +/-5 ℃, the temperature of an extrusion die is 420 +/-5 ℃, the temperature of the die is 450 +/-10 ℃, the heat preservation time is 6-8 hours, the heat preservation time of a low-temperature furnace is less than or equal to 24 hours, and the extrusion speed is 2 +/-0.5 mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210454151.9A CN114807690A (en) | 2022-04-27 | 2022-04-27 | Plastic aluminum lithium alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210454151.9A CN114807690A (en) | 2022-04-27 | 2022-04-27 | Plastic aluminum lithium alloy and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114807690A true CN114807690A (en) | 2022-07-29 |
Family
ID=82508654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210454151.9A Pending CN114807690A (en) | 2022-04-27 | 2022-04-27 | Plastic aluminum lithium alloy and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114807690A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540811A (en) * | 2013-10-17 | 2014-01-29 | 常熟市良益金属材料有限公司 | Aluminum alloy |
| CN105039807A (en) * | 2015-08-04 | 2015-11-11 | 安徽科蓝特铝业有限公司 | High-strength aluminum alloy profile and manufacturing technique thereof |
| CN107587012A (en) * | 2017-09-26 | 2018-01-16 | 沈阳航空航天大学 | A kind of lightweight casting Al Si Li alloy materials and preparation method thereof |
| JP2018184659A (en) * | 2017-04-27 | 2018-11-22 | 株式会社コイワイ | High-strength aluminum alloy laminated molding and method for producing the same |
| CN109628804A (en) * | 2018-12-06 | 2019-04-16 | 佛山市三水凤铝铝业有限公司 | A kind of high-strength aluminum alloy and preparation method thereof with excellent oxidation effect |
| WO2019161137A1 (en) * | 2018-02-14 | 2019-08-22 | Arconic Inc. | Aluminum alloy products and methods for producing the same |
| CN111560546A (en) * | 2020-04-29 | 2020-08-21 | 广东凤铝铝业有限公司 | Aluminum alloy with high crushing performance and preparation method of section bar of aluminum alloy |
| CN113234946A (en) * | 2021-05-08 | 2021-08-10 | 山东裕航特种合金装备有限公司 | Preparation method of high-density and light-weight frame material for engineering truck |
-
2022
- 2022-04-27 CN CN202210454151.9A patent/CN114807690A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540811A (en) * | 2013-10-17 | 2014-01-29 | 常熟市良益金属材料有限公司 | Aluminum alloy |
| CN105039807A (en) * | 2015-08-04 | 2015-11-11 | 安徽科蓝特铝业有限公司 | High-strength aluminum alloy profile and manufacturing technique thereof |
| JP2018184659A (en) * | 2017-04-27 | 2018-11-22 | 株式会社コイワイ | High-strength aluminum alloy laminated molding and method for producing the same |
| CN110545943A (en) * | 2017-04-27 | 2019-12-06 | 小岩井株式会社 | High-strength aluminum alloy laminate molding and method for producing same |
| CN107587012A (en) * | 2017-09-26 | 2018-01-16 | 沈阳航空航天大学 | A kind of lightweight casting Al Si Li alloy materials and preparation method thereof |
| WO2019161137A1 (en) * | 2018-02-14 | 2019-08-22 | Arconic Inc. | Aluminum alloy products and methods for producing the same |
| CN109628804A (en) * | 2018-12-06 | 2019-04-16 | 佛山市三水凤铝铝业有限公司 | A kind of high-strength aluminum alloy and preparation method thereof with excellent oxidation effect |
| CN111560546A (en) * | 2020-04-29 | 2020-08-21 | 广东凤铝铝业有限公司 | Aluminum alloy with high crushing performance and preparation method of section bar of aluminum alloy |
| CN113234946A (en) * | 2021-05-08 | 2021-08-10 | 山东裕航特种合金装备有限公司 | Preparation method of high-density and light-weight frame material for engineering truck |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108660344B (en) | Low-quenching-sensitivity Al-Mg-Si alloy and preparation method thereof | |
| CN111411247B (en) | Composite treatment method for regenerated wrought aluminum alloy melt | |
| CN113234949B (en) | Method for preparing regenerated wrought aluminum alloy from waste aluminum alloy | |
| CN111014332B (en) | 6-series high alloy component with high long-term thermal stability and preparation method thereof | |
| CN115261683B (en) | Water quenching-free high-strength and high-toughness cast Al-Si alloy and preparation method thereof | |
| WO2023125262A1 (en) | Modified aluminum alloy and preparation method therefor | |
| WO2023125282A1 (en) | High-plasticity composite modified aluminum alloy part and preparation method therefor | |
| CN112301259A (en) | High-strength die-casting aluminum alloy, and preparation method and application thereof | |
| CN115074584B (en) | Die-casting aluminum alloy and preparation method thereof | |
| CN113430428B (en) | Al-Mg-Si aluminum alloy and preparation method thereof | |
| CN110791688B (en) | High-strength high-fracture-toughness aluminum alloy bar and preparation method thereof | |
| WO2023125265A1 (en) | High-strength composite modified aluminum alloy part and preparation method therefor | |
| WO2023125264A1 (en) | High-strength aluminum alloy workpiece and preparation method therefor | |
| CN111690846A (en) | Production process of superhard 6026 aluminum alloy profile | |
| WO2023125266A1 (en) | High-plasticity aluminum alloy part and manufacturing method therefor | |
| CN115141947B (en) | 5000-series aluminum alloy slab ingot with high-proportion scrap added, preparation method thereof and aluminum product | |
| WO2020052129A1 (en) | Rare-earth aluminum alloy material having high ductility and high strength and preparation method therefor | |
| CN115449683A (en) | Magnesium alloy and preparation method thereof | |
| CN114807690A (en) | Plastic aluminum lithium alloy and preparation method thereof | |
| CN113278827A (en) | Medium-strength easily-extruded 5-series aluminum alloy ingot | |
| CN117947319B (en) | Aluminum alloy, preparation method thereof and aluminum alloy die casting | |
| CN115505799B (en) | High-strength and high-toughness gravity casting aluminum alloy and preparation method and application thereof | |
| CN115433860B (en) | High-performance heat-resistant extrusion rare earth aluminum alloy and preparation method thereof | |
| CN112760534B (en) | High-strength heat-resistant cast aluminum-copper alloy containing rare earth Y eutectic and preparation method thereof | |
| CN114574736A (en) | Preparation method of high-strength aluminum alloy and high-strength aluminum alloy |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220729 |