CN112708810A - Extrusion casting regenerated aluminum-magnesium alloy with high Fe content and preparation method thereof - Google Patents
Extrusion casting regenerated aluminum-magnesium alloy with high Fe content and preparation method thereof Download PDFInfo
- Publication number
- CN112708810A CN112708810A CN202011503466.5A CN202011503466A CN112708810A CN 112708810 A CN112708810 A CN 112708810A CN 202011503466 A CN202011503466 A CN 202011503466A CN 112708810 A CN112708810 A CN 112708810A
- Authority
- CN
- China
- Prior art keywords
- aluminum
- alloy
- content
- magnesium
- magnesium alloy
- 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.)
- Granted
Links
- 238000005266 casting Methods 0.000 title claims abstract description 26
- 238000001125 extrusion Methods 0.000 title claims abstract description 23
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 21
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 101000993059 Homo sapiens Hereditary hemochromatosis protein Proteins 0.000 title claims abstract description 10
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 60
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 57
- 239000011777 magnesium Substances 0.000 claims abstract description 32
- 229910052742 iron Inorganic materials 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000008929 regeneration Effects 0.000 claims abstract description 5
- 238000011069 regeneration method Methods 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 39
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 39
- 229910052749 magnesium Inorganic materials 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 21
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 20
- 229910052748 manganese Inorganic materials 0.000 claims description 18
- 239000000654 additive Substances 0.000 claims description 17
- 230000000996 additive effect Effects 0.000 claims description 17
- 229910018575 Al—Ti Inorganic materials 0.000 claims description 16
- 229910000838 Al alloy Inorganic materials 0.000 claims description 14
- 239000000155 melt Substances 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 11
- 229910018134 Al-Mg Inorganic materials 0.000 claims description 8
- 229910018467 Al—Mg Inorganic materials 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- 230000005496 eutectics Effects 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 238000009716 squeeze casting Methods 0.000 claims description 3
- 238000010587 phase diagram Methods 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 47
- 239000011572 manganese Substances 0.000 description 33
- 238000005728 strengthening Methods 0.000 description 5
- 238000005070 sampling Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- GANNOFFDYMSBSZ-UHFFFAOYSA-N [AlH3].[Mg] Chemical compound [AlH3].[Mg] GANNOFFDYMSBSZ-UHFFFAOYSA-N 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Images
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
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Extrusion Of Metal (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses an extrusion casting regeneration aluminum magnesium alloy with high Fe content and a preparation method thereof, wherein the extrusion casting regeneration aluminum magnesium alloy comprises the following components in percentage by mass: 3.0-5.0% of Mg, 0.3-0.9% of Fe, 0.5-0.8% of Mn, 0.1-0.2% of Ti, 0.005-0.02% of B, less than or equal to 0.15% of impurity elements and the balance of Al. The compact and fine iron-rich phase formed by extrusion casting not only greatly reduces the influence on the plasticity of the alloy, but also improves the strength of the alloy. The invention prepares a reclaimed aluminum magnesium alloy material with medium strength, high plasticity and no need of heat treatment by extrusion casting. The preparation method has the advantages of simple process, low cost and the like.
Description
Technical Field
The invention relates to the field of metal materials, in particular to an extrusion casting regenerated aluminum-magnesium alloy with high Fe content and a preparation method thereof.
Background
The Al-Mg series aluminum alloy has the advantages of small density, high specific strength, good formability, corrosion resistance, good weldability and the like, and is widely applied to the fields of traffic, electronics, communication and the like. However, Al — Mg aluminum alloys have limited the use of safety structures in the traffic field due to their poor fusion casting properties and low strength.
At present, three commonly used cast aluminum-magnesium alloy grades are ZL301, ZL302 and ZL305 in China, wherein the ZL305 has the best comprehensive mechanical property, the tensile strength in a T4 heat treatment state is 300MPa, the elongation after fracture is 9%, but the Mg content is as high as 7.5-9%, the Mg element is seriously oxidized and burnt, and the natural age hardening tendency is obvious. In recent years, there have been increasing reports on the study of materials for casting aluminum magnesium alloys. Chinese patent CN105063440A describes a cast aluminum-magnesium alloy with 9.3-9.8% of magnesium and less than 0.15% of iron, and the alloy has good mechanical properties after heat treatment, the tensile strength is more than or equal to 400MPa, and the elongation is more than or equal to 13%. However, the alloy has high magnesium content and poor casting performance, and the heat treatment increases the cost. Further, Chinese patent CN104561699A discloses a high strength cast aluminum magnesium alloy material with a magnesium content of 3.8-4.5% and an iron content of 0.01-0.02%, which has a tensile strength of 300-400 MPa and an elongation of 12-14%. However, Sm, Nd and Y are expensive rare earth materials, and the content of iron is strictly controlled, so that the cost is increased and the smelting process is complex.
The secondary aluminum has the advantages of low energy consumption and the like, has good environmental and social benefits, and can introduce some inevitable harmful elements in the recovery process of the aluminum alloy. Fe is the most common impurity element in the regenerated aluminum, forms a hard and brittle iron-rich intermetallic compound, and greatly reduces the mechanical property of the alloy. However, Fe is not always detrimental and prevents sticking in cast aluminium alloys, and it has recently been found that Fe in cast aluminium magnesium alloys can increase the strength of the alloy and retain higher elongation. Therefore, how to change Fe element into valuable is of great value significance for realizing the recycling of resources.
Disclosure of Invention
The invention aims to provide a recycled aluminum magnesium alloy material which is low in cost, has medium strength and high plasticity, does not need heat treatment and is suitable for extrusion casting molding and a preparation method thereof aiming at the problems and the defects.
The purpose of the invention is realized by the following scheme:
a high Fe content extrusion casting regeneration aluminum magnesium alloy comprises the following components by mass percent: 3.0-5.0% of Mg3.3-0.9% of Fe, 0.5-0.8% of Mn, 0.1-0.2% of Ti, 0.005-0.02% of B, less than or equal to 0.15% of impurity elements and the balance of Al. Other impurity elements are strictly controlled, and the mechanical property of the alloy is improved.
Preferably, the Fe and Mn in the squeeze casting recycled aluminum magnesium alloy completely form eutectic Al6(Fe, Mn) phase. Further preferably, the completely formed eutectic Al6The (Fe, Mn) phase is determined by calculating an equilibrium solidification phase diagram of Al-Mg-Fe-Mn-B through thermodynamic software.
A preparation method of extrusion casting regeneration aluminum magnesium alloy with high Fe content comprises the following steps:
Al-Mg secondary aluminum containing Fe and Mn impurity elements is taken as a main raw material, and Mn additive, Al-Ti intermediate alloy, Al-B intermediate alloy, industrial pure aluminum and pure magnesium are taken as auxiliary materials;
(1) adding secondary aluminum into a smelting furnace, and heating to 750-800 ℃ for melting;
(2) adding a Mn additive and an Al-Ti intermediate alloy into the molten secondary aluminum in the step (1), then adding industrial pure aluminum, pure magnesium and an Al-B intermediate alloy, mixing and melting auxiliary materials, and then reducing the temperature of the melt to 700-720 ℃;
(3) spraying a refining agent into the melt in the step (2) by taking high-purity nitrogen as a carrier, standing for 10-30 minutes, and then slagging off;
(4) and (4) preparing a medium-strength high-toughness cast aluminum alloy casting by extrusion casting.
Preferably, the conditions of the squeeze casting are as follows: the pouring temperature is 680-730 ℃, the temperature of a mold cavity is 230-250 ℃, the extrusion specific pressure is 55-300 MPa, the mold filling speed is 0.2-0.3 m/s, and the pressure maintaining time is 20-30 s.
Preferably, the method for determining the addition amounts of the Mn additive, the Al-Ti master alloy, the Al-B master alloy, the industrial pure aluminum and the pure magnesium in the step (2) is as follows:
taking the molten secondary aluminum testing component in the step (1); comparing the difference between the actually measured components and the design components of the extrusion casting regenerated aluminum-magnesium alloy, and calculating the corresponding auxiliary material usage; the usage amount of the pure magnesium and the Al-B intermediate alloy is determined based on the designed content and the actually measured content of Mg and B; the using amount of the industrial pure aluminum is determined by the actual measurement content and the design content of Fe, and the using amount of the Mn additive is determined by the actual measurement content and the design content of Mn; the using amount of the Al-Ti intermediate alloy is determined by the actual measurement content and the design content of Ti.
The invention has the following beneficial effects:
(1) the invention adopts industrial waste aluminum materials as raw materials, also adopts conventional additive elements such as Mg, Mn, B, Ti and the like, does not contain rare and precious elements, and has wide sources and low cost.
(2) Magnesium (Mg) is the main element for strengthening the alloy, the maximum solubility of Mg in Al at the eutectic temperature is 17.4%, and even if the alloy is rapidly cooled, the solubility can reach 3% -6%, so that the 'parking effect' (the precipitation of Mg in the natural aging process) is easy to generate. The Mg content in the alloy is only 3-5%, so that the 'parking effect' is reduced, and the stability of the mechanical property of the alloy is facilitated.
(3) Iron element (Fe) is the main impurity element in the regenerated Al-Mg alloy, and when Mn is not contained or the content of Mn is low, Fe is mainly in the form of needle-shaped eutectic crystal and primary blocky Al13Fe4The phase is main, the plastic damage to the alloy is larger, but the adhesion of the melt to the steel mould can be effectively reduced.
(4) The main function of the manganese element (Mn) is to convert the iron-rich phase into fine Chinese character-shaped Al6(Fe, Mn) phase, and also suppression of bulk Al6Formation of (Fe, Mn) phase. Therefore, on one hand, the invention obtains the completely eutectic Al under the specific Fe content through thermodynamic calculation6The Mn content required by the (Fe, Mn) phase, on the other hand, the active element B is introduced to reduce Al6The growth rate of the (Fe, Mn) phase. The function of Mn in the alloy is fully exerted.
(5) Alloy of the inventionHas only Al in the structure of6(Fe, Mn) phase. The alloy does not contain heat treatment strengthening elements such as Cu and the like, and the alloy mainly depends on fine grain strengthening, second phase strengthening and solid solution strengthening. The tensile strength of the as-cast alloy is 250-350MPa, the yield strength is 135-180MPa, and the elongation is 25-40%.
Drawings
FIG. 1 is a scanning electron micrograph of example 4.
Detailed Description
The present invention is further described below in conjunction with specific examples to enable those skilled in the art to better understand the present invention and to practice it, but the examples are not intended to limit the present invention.
Example 1
The design components are as follows: al-3.1Mg-0.5Mn-0.3Fe-0.1 Ti-0.02B.
Al-Mg secondary aluminum of Fe and Mn impurity elements is used as a main raw material, and Mn additive, Al-Ti intermediate alloy, industrial pure aluminum and pure magnesium are used as auxiliary materials.
(1) Adding secondary aluminum into a smelting furnace, and heating to 750 ℃ for melting; after the raw materials in the furnace are completely melted, sampling and testing alloy components; and comparing the difference between the actually measured components and the designed components, and calculating and weighing corresponding auxiliary materials.
(2) Adding a Mn additive and an Al-Ti intermediate alloy into the molten secondary aluminum in the step (1), then adding industrial pure aluminum, pure magnesium and an Al-B intermediate alloy, mixing and melting auxiliary materials, and then reducing the temperature of the melt to 700 ℃;
(3) spraying a refining agent into the melt in the step (2) by taking high-purity nitrogen as a carrier, standing for 10-30 minutes, and then slagging off;
(4) preparing a medium-strength high-toughness cast aluminum alloy casting under the conditions that the pouring temperature is 730 ℃, the temperature of a die cavity is 250 ℃, the extrusion specific pressure is 200MPa, the mold filling speed is 0.27 m/s, and the pressure maintaining time is 30 seconds.
Example 2
The design components are as follows: al-3.6Mg-0.8Mn-0.5Fe-0.15 Ti-0.005B.
Al-Mg secondary aluminum of Fe and Mn impurity elements is used as a main raw material, and Mn additive, Al-Ti intermediate alloy, industrial pure aluminum and pure magnesium are used as auxiliary materials.
(1) Adding secondary aluminum into a smelting furnace, and heating to 760 ℃ for melting; after the raw materials in the furnace are completely melted, sampling and testing alloy components; and comparing the difference between the actually measured components and the designed components, and calculating and weighing corresponding auxiliary materials.
(2) Adding a Mn additive and an Al-Ti intermediate alloy into the molten secondary aluminum in the step (1), then adding industrial pure aluminum, pure magnesium and an Al-B intermediate alloy, mixing and melting auxiliary materials, and then reducing the temperature of the melt to 710 ℃;
(3) and (3) spraying a refining agent into the melt in the step (2) by taking high-purity nitrogen as a carrier, standing for 10-30 minutes, and slagging off.
(4) Preparing a medium-strength high-toughness cast aluminum alloy casting under the conditions that the pouring temperature is 720 ℃, the temperature of a die cavity of the die is 250 ℃, the extrusion specific pressure is 55MPa, the mold filling speed is 0.2 m/s, and the pressure maintaining time is 30 seconds.
Example 3
The design components are as follows: al-4.5Mg-0.7Mn-0.7Fe-0.18 Ti-0.015B.
Al-Mg secondary aluminum of Fe and Mn impurity elements is used as a main raw material, and Mn additive, Al-Ti intermediate alloy, industrial pure aluminum and pure magnesium are used as auxiliary materials.
(1) Adding secondary aluminum into a smelting furnace, and heating to 780 ℃ for melting; after the raw materials in the furnace are completely melted, sampling and testing alloy components; and comparing the difference between the actually measured components and the designed components, and calculating and weighing corresponding auxiliary materials.
(2) Adding a Mn additive and an Al-Ti intermediate alloy into the molten secondary aluminum in the step (1), then adding industrial pure aluminum, pure magnesium and an Al-B intermediate alloy, mixing and melting auxiliary materials, and then reducing the melt temperature to 720 ℃;
(3) and (3) spraying a refining agent into the melt in the step (2) by taking high-purity nitrogen as a carrier, standing for 10-30 minutes, and slagging off.
(4) Preparing a medium-strength high-toughness cast aluminum alloy casting under the conditions that the pouring temperature is 730 ℃, the temperature of a die cavity is 250 ℃, the extrusion specific pressure is 100MPa, the mold filling speed is 0.2 m/s, and the pressure maintaining time is 30 seconds.
Example 4
The design components are as follows: al-4.9Mg-0.5Mn-0.9Fe-0.2 Ti-0.008B.
Al-Mg secondary aluminum of Fe and Mn impurity elements is used as a main raw material, and Mn additive, Al-Ti intermediate alloy, industrial pure aluminum and pure magnesium are used as auxiliary materials.
(1) Adding secondary aluminum into a smelting furnace, and heating to 800 ℃ for melting; after the raw materials in the furnace are completely melted, sampling and testing alloy components; and comparing the difference between the actually measured components and the designed components, and calculating and weighing corresponding auxiliary materials.
(2) Adding a Mn additive and an Al-Ti intermediate alloy into the molten secondary aluminum in the step (1), then adding industrial pure aluminum, pure magnesium and an Al-B intermediate alloy, mixing and melting auxiliary materials, and then reducing the melt temperature to 720 ℃;
(3) and (3) spraying a refining agent into the melt in the step (2) by taking high-purity nitrogen as a carrier, standing for 10-30 minutes, and slagging off.
(4) Preparing a medium-strength high-toughness cast aluminum alloy casting under the conditions that the pouring temperature is 730 ℃, the temperature of a die cavity is 230 ℃, the extrusion specific pressure is 300MPa, the mold filling speed is 0.3 m/s, and the pressure maintaining time is 30 seconds.
FIG. 1 is a scanning electron micrograph of example 4 wherein the white particles are an iron-rich phase. When the iron content is 0.9 percent and the extrusion specific pressure is 300MPa, the alloy structure has no casting defects, and compact and fine iron-rich phases are formed by extrusion casting.
The mechanical properties of the aluminum alloys of examples 1-4 are compared in Table 1.
The chemical composition of the aluminum alloys of examples 1-4 is shown in Table 2.
TABLE 1 mechanical Properties of aluminum alloys in examples 1 to 4
| Examples | Tensile strength/MPa | Tensile strength at yield/MPa | Elongation/ |
| 1 | 250 | 140 | 40 |
| 2 | 280 | 158 | 30 |
| 3 | 350 | 180 | 28 |
| 4 | 330 | 170 | 25 |
TABLE 2 chemical composition of aluminum alloy in examples 1 to 4
| Examples | Mg | Mn | Fe | Ti | | Others | Al | |
| 1 | 3.1 | 0.5 | 0.3 | 0.1 | 0.02 | ≤0.15 | Balance of | |
| 2 | 3.6 | 0.8 | 0.5 | 0.15 | 0.005 | ≤0.15 | Balance of | |
| 3 | 4.5 | 0.7 | 0.7 | 0.18 | 0.015 | ≤0.15 | Balance of | |
| 4 | 4.9 | 0.5 | 0.9 | 0.2 | 0.008 | ≤0.15 | Balance of |
As can be seen from Table 1, the cast alloy has a tensile strength of 250-350MPa, a yield strength of 135-180MPa and an elongation of 25-40%. When the iron content in example 1 was 0.3%, the elongation of the alloy was 40%, the tensile strength was 250MPa, and the toughness of the alloy was very good, but the strength was low. When the iron content in example 4 was 0.9%, the elongation of the alloy was 25% and the tensile strength was 330MPa, and compared to example 1, the elongation of the alloy was reduced by 37.5%, the tensile strength was improved by 32%, and the yield strength was improved by 21.4%. The best overall mechanical properties are obtained in example 3, and compared with example 1, the elongation of the alloy is reduced by 30%, the tensile strength is improved by 40%, and the yield strength is improved by 28.6%.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (6)
1. The extrusion casting regeneration aluminum magnesium alloy with high Fe content is characterized by comprising the following components in percentage by mass: 3.0-5.0% of Mg, 0.3-0.9% of Fe, 0.5-0.8% of Mn, 0.1-0.2% of Ti, 0.005-0.02% of B, less than or equal to 0.15% of impurity elements and the balance of Al.
2. The squeeze cast regenerative aluminum magnesium alloy with high Fe content as claimed in claim 1 wherein Fe, Mn in the squeeze cast regenerative aluminum magnesium alloy forms eutectic Al completely6(Fe, Mn) phase.
3. The high Fe content squeeze cast recycled aluminum magnesium alloy as claimed in claim 2 wherein said fully formed eutectic Al6The (Fe, Mn) phase is determined by calculating an equilibrium solidification phase diagram of Al-Mg-Fe-Mn-B through thermodynamic software.
4. A method of producing a high Fe squeeze cast recycled almag as claimed in any one of claims 1 to 3, comprising the steps of:
Al-Mg secondary aluminum containing Fe and Mn impurity elements is taken as a main raw material, and Mn additive, Al-Ti intermediate alloy, Al-B intermediate alloy, industrial pure aluminum and pure magnesium are taken as auxiliary materials;
(1) adding secondary aluminum into a smelting furnace, and heating to 750-800 ℃ for melting;
(2) adding a Mn additive and an Al-Ti intermediate alloy into the molten secondary aluminum in the step (1), then adding industrial pure aluminum, pure magnesium and an Al-B intermediate alloy, mixing and melting auxiliary materials, and then reducing the temperature of the melt to 700-720 ℃;
(3) spraying a refining agent into the melt in the step (2) by taking high-purity nitrogen as a carrier, standing for 10-30 minutes, and then slagging off;
(4) and (4) preparing a medium-strength high-toughness cast aluminum alloy casting by extrusion casting.
5. The production method according to claim 4, wherein the condition of the squeeze casting of step (4) is: the pouring temperature is 680-730 ℃, the temperature of a mold cavity is 230-250 ℃, the extrusion specific pressure is 55-300 MPa, the mold filling speed is 0.2-0.3 m/s, and the pressure maintaining time is 20-30 s.
6. The method according to claim 4, wherein the addition amounts of the Mn additive, the Al-Ti master alloy, the Al-B master alloy, the industrial pure aluminum and the pure magnesium in the step (2) are determined as follows:
taking the molten secondary aluminum testing component in the step (1); comparing the difference between the actually measured components and the design components of the extrusion casting regenerated aluminum-magnesium alloy, and calculating the corresponding auxiliary material usage; the usage amount of the pure magnesium and the Al-B intermediate alloy is determined based on the designed content and the actually measured content of Mg and B; the using amount of the industrial pure aluminum is determined by the actual measurement content and the design content of Fe, and the using amount of the Mn additive is determined by the actual measurement content and the design content of Mn; the using amount of the Al-Ti intermediate alloy is determined by the actual measurement content and the design content of Ti.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011503466.5A CN112708810B (en) | 2020-12-17 | 2020-12-17 | Extrusion casting regenerated aluminum-magnesium alloy with high Fe content and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011503466.5A CN112708810B (en) | 2020-12-17 | 2020-12-17 | Extrusion casting regenerated aluminum-magnesium alloy with high Fe content and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112708810A true CN112708810A (en) | 2021-04-27 |
| CN112708810B CN112708810B (en) | 2021-10-22 |
Family
ID=75544498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011503466.5A Expired - Fee Related CN112708810B (en) | 2020-12-17 | 2020-12-17 | Extrusion casting regenerated aluminum-magnesium alloy with high Fe content and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112708810B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115786785A (en) * | 2022-11-17 | 2023-03-14 | 大连科天新材料有限公司 | High-strength and high-toughness heat-treatment-free die-casting aluminum-magnesium alloy, and preparation method and application thereof |
| CN117070808A (en) * | 2023-10-17 | 2023-11-17 | 魏桥(苏州)轻量化研究院有限公司 | Cast aluminum alloy suitable for brazing and preparation method and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5908518A (en) * | 1996-08-06 | 1999-06-01 | Pechiney Rhenalu | AlMgMn alloy product for welded construction with improved corrosion resistance |
| CN1860246A (en) * | 2003-12-19 | 2006-11-08 | 日本轻金属株式会社 | Aluminum alloy sheet excellent in resistance to softening by baking |
| CN102206778A (en) * | 2010-03-30 | 2011-10-05 | 本田技研工业株式会社 | Aluminium die casting alloy used as vehicle material |
| CN104093869A (en) * | 2012-02-09 | 2014-10-08 | 株式会社神户制钢所 | Aluminum alloy sheet for DI can body |
| JP2019173111A (en) * | 2018-03-29 | 2019-10-10 | 株式会社豊田中央研究所 | Aluminum alloy for die casting and aluminum alloy cast |
| CN110343883A (en) * | 2019-06-24 | 2019-10-18 | 广东省材料与加工研究所 | A kind of high tough cast Al-Si alloy and its aluminium scrap regeneration method |
| CN111254303A (en) * | 2020-03-26 | 2020-06-09 | 广东省材料与加工研究所 | Method for improving morphology of iron-rich phase in secondary aluminum and reducing iron |
-
2020
- 2020-12-17 CN CN202011503466.5A patent/CN112708810B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5908518A (en) * | 1996-08-06 | 1999-06-01 | Pechiney Rhenalu | AlMgMn alloy product for welded construction with improved corrosion resistance |
| CN1860246A (en) * | 2003-12-19 | 2006-11-08 | 日本轻金属株式会社 | Aluminum alloy sheet excellent in resistance to softening by baking |
| CN102206778A (en) * | 2010-03-30 | 2011-10-05 | 本田技研工业株式会社 | Aluminium die casting alloy used as vehicle material |
| CN104093869A (en) * | 2012-02-09 | 2014-10-08 | 株式会社神户制钢所 | Aluminum alloy sheet for DI can body |
| JP2019173111A (en) * | 2018-03-29 | 2019-10-10 | 株式会社豊田中央研究所 | Aluminum alloy for die casting and aluminum alloy cast |
| CN110343883A (en) * | 2019-06-24 | 2019-10-18 | 广东省材料与加工研究所 | A kind of high tough cast Al-Si alloy and its aluminium scrap regeneration method |
| CN111254303A (en) * | 2020-03-26 | 2020-06-09 | 广东省材料与加工研究所 | Method for improving morphology of iron-rich phase in secondary aluminum and reducing iron |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115786785A (en) * | 2022-11-17 | 2023-03-14 | 大连科天新材料有限公司 | High-strength and high-toughness heat-treatment-free die-casting aluminum-magnesium alloy, and preparation method and application thereof |
| CN115786785B (en) * | 2022-11-17 | 2024-04-02 | 大连科天新材料有限公司 | High-strength and high-toughness heat-treatment-free die-casting aluminum magnesium alloy, and preparation method and application thereof |
| CN117070808A (en) * | 2023-10-17 | 2023-11-17 | 魏桥(苏州)轻量化研究院有限公司 | Cast aluminum alloy suitable for brazing and preparation method and application thereof |
| CN117070808B (en) * | 2023-10-17 | 2024-01-02 | 魏桥(苏州)轻量化研究院有限公司 | Cast aluminum alloy suitable for brazing and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112708810B (en) | 2021-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110029250B (en) | High-elongation heat-resistant cast aluminum alloy and pressure casting preparation method thereof | |
| WO2019034837A1 (en) | Method of forming a cast aluminium alloy | |
| CN109881062B (en) | High-strength, high-toughness and high-modulus extrusion casting magnesium alloy and preparation method thereof | |
| CN115287506B (en) | Heat treatment-free high-strength and high-toughness cast aluminum alloy, and preparation method and application thereof | |
| CN103014443B (en) | A kind of rare earth aluminium alloy and preparation method thereof | |
| CN1676646A (en) | High-strength heat-resisting magnesium alloy and its preparing method | |
| CN110643862A (en) | Aluminum alloy for new energy automobile battery shell and pressure casting preparation method thereof | |
| CN112708810B (en) | Extrusion casting regenerated aluminum-magnesium alloy with high Fe content and preparation method thereof | |
| CN108796317A (en) | Suitable for new-energy automobile can semi-solid squeeze casting aluminium alloy and preparation method | |
| KR20160011136A (en) | Magnesium alloy having improved corrosion resistance and method for manufacturing magnesium alloy member using the same | |
| CN110079711B (en) | Heat-resistant high-pressure cast Al-Si-Ni-Cu aluminum alloy and preparation method thereof | |
| CN109807302B (en) | High-strength high-toughness heat-resistant die-casting Mg-Gd alloy and preparation method thereof | |
| CN113322404B (en) | High-thermal-conductivity high-strength Mg-Al-La-Mn wrought magnesium alloy and preparation method thereof | |
| CN107937764B (en) | Liquid die forging high-strength and high-toughness aluminum alloy and liquid die forging method thereof | |
| CN111101031B (en) | Al-Mg2Si-Mg-Mn-Y-B high-strength and high-toughness aluminum alloy and preparation method thereof | |
| US20220017997A1 (en) | Aluminum alloys for structural high pressure vacuum die casting applications | |
| CN111607728A (en) | Low-cost wrought magnesium alloy reinforced by light rare earth elements Ce and Sm and preparation method thereof | |
| CN100999799A (en) | Magnesium alloy | |
| EP2692883A2 (en) | Mg-al-ca-based master alloy for mg alloys, and a production method therefor | |
| JP2008025003A (en) | Casting aluminum alloy, and casting of the aluminum alloy | |
| CN109881067B (en) | High-strength high-toughness heat-resistant die-casting Mg-Gd-Er alloy and preparation method thereof | |
| CN109536802B (en) | High-strength and high-toughness Mg-Zn-Y-Mn-Mo-B alloy and preparation method thereof | |
| CN109943757B (en) | High-strength-toughness heat-resistant Mg-Y-Er alloy suitable for low-pressure casting and preparation method thereof | |
| CN109811224B (en) | High-strength high-toughness heat-resistant die-casting Mg-Y-Er alloy and preparation method thereof | |
| CN106011567A (en) | Magnesium alloy casting and preparation method thereof |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 |