CN112322946A - Graphene aluminum-based synthetic material and preparation method thereof - Google Patents
Graphene aluminum-based synthetic material and preparation method thereof Download PDFInfo
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- CN112322946A CN112322946A CN202011215041.4A CN202011215041A CN112322946A CN 112322946 A CN112322946 A CN 112322946A CN 202011215041 A CN202011215041 A CN 202011215041A CN 112322946 A CN112322946 A CN 112322946A
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- 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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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- 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
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- 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
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- 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
- C22F1/057—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 copper as the next major constituent
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Abstract
The invention provides a graphene aluminum-based synthetic material and a preparation method thereof, wherein rare earth elements are added in a trace manner in the aluminum-based alloy during casting, the total added mass of the rare earth elements is 0.15-0.05% of the total mass of the aluminum-based alloy, and the mass of any rare earth element added is less than 0.05% of the total mass of the aluminum-based alloy. According to the method, rare earth elements are added in trace amount when the aluminum-based alloy is cast. Experiments prove that the tensile strength of the aluminum-based alloy profile formed after the rare earth element is added in trace amount during the casting of the aluminum-based alloy reaches 475 MPa.
Description
Technical Field
The invention relates to an aluminum-based alloy, in particular to an aluminum-based alloy with strong tensile strength and a preparation method thereof.
Background
Currently, copper alloys, due to their high tensile strength, up to 470Mpa, are used to manufacture articles used in mission critical designs capable of operating under load for the following applications: the transportation sector, such as for the manufacture of automotive parts, including cast wheel rims; the sports industry and the field of sports equipment, such as bicycles, scooters, training machines, etc., as well as other branches of engineering and industry. However, since copper is a precious metal, the cost of the products is high by using copper alloy, and the density of copper is high, generally the density of copper-based alloy reaches 8.6 g/cc, so that the unit volume weight of the products is large, and the products are inconvenient to use, therefore, the industry hopes to replace copper-based alloy with aluminum-based alloy to prepare products with high tensile strength.
Disclosure of Invention
Aiming at the hope that the aluminum-based alloy is used for replacing the copper-based alloy to prepare a product with high tensile strength requirement in the industry at present, the invention provides the aluminum-based alloy with strong tensile strength and the preparation method thereof, and the aluminum-based alloy is added with trace rare earth elements, so that the tensile strength of the aluminum-based alloy reaches 475MPa, and even is stronger than that of the common copper-based alloy.
The technical scheme for realizing the technical purpose of the invention is as follows: a graphene aluminum-based synthetic material is characterized in that rare earth elements are added in trace when an aluminum-based alloy is cast, the total added mass of the rare earth elements is 0.15% -0.05% of the total mass of the aluminum-based alloy, and the mass of any rare earth element added is less than 0.05% of the total mass of the aluminum-based alloy.
Experiments prove that the tensile strength of the aluminum-based alloy profile formed after the rare earth element is added in trace amount during the casting of the aluminum-based alloy reaches 475 MPa.
Further, in the graphene aluminum-based composite material: the aluminium-based alloy comprising the following alloy constituents in% by weight
The rest is aluminum;
wherein: fe + Zn represents Fe or Zn or an iron mixture of Fe and Zn in any proportion;
cu + Mg represents Cu or Mg or an iron mixture of Cu and Mg in any proportion;
cr + Bi represents Cr or Bi or an iron mixture of Cr and Bi in any proportion;
mn + Pb represents Mn or Pb or an iron mixture of Mn and Pb in any proportion.
Further, in the graphene aluminum-based composite material: the aluminium-based alloy comprising the following alloy constituents in% by weight
The remainder being aluminium.
The invention also provides a preparation method of the graphene aluminum-based synthetic material, which comprises a smelting step and an ingot casting step; the method is characterized in that: the smelting step comprises the following steps:
step Y1: melting the aluminum ingot, wherein the melting temperature is limited within 730 ℃;
step Y2: adding silicon and rare earth elements with specified mass into the melted aluminum alloy liquid, and heating and melting;
step Y3: after the silicon is completely melted, uniformly stirring, and adjusting the temperature to 680-700 ℃;
step Y4: pressing magnesium into the aluminum alloy liquid, adding the rest components after the magnesium is completely melted, and cooling to form an ingot;
further, in the above method: in the step Y2, the silicon lump size is suitable for being completely immersed into the aluminum alloy liquid.
Further, in the above method: in the step Y4, the magnesium is pressed into the aluminum alloy liquid by using a bell jar, the bell jar is moved, and after the magnesium is completely melted, the bell jar is lifted out of the aluminum alloy liquid.
Further, in the above method: the ingot casting step comprises the following steps:
step J1: extruding;
step J2: straightening tension;
step J3: cutting a head and sampling;
step J4: and (6) rolling and straightening.
Further, in the above method: before the step J2, the method further includes a step J11: quenching;
after the step J4, the method further comprises a step J42: and (6) straightening by hand.
Further, in the above method: before the step J42, the method further includes a step J41: and (5) artificial aging.
Further, in the above method: after the step J42, the method further includes a step J43: and (5) annealing the finished product.
The present invention will be described in more detail with reference to specific examples.
Detailed Description
The embodiment is a graphene aluminum-based synthetic material, which is a rare earth aluminum-based alloy, and rare earth elements are added in trace when the existing aluminum-based alloy is cast, wherein the total added mass of the rare earth elements is 0.15-0.05% of the total mass of the aluminum-based alloy, and the mass of any rare earth element added is less than 0.05% of the total mass of the aluminum-based alloy.
Experiments prove that the tensile strength of the aluminum-based alloy profile formed after the rare earth element is added in trace amount during the casting of the aluminum-based alloy reaches 475 MPa.
In this example, the aluminum-based alloy contains the following alloy components in the concentrations by weight, as shown in table 1:
table 1 aluminium alloy in weight% concentration table the remainder is a1
Wherein: fe + Zn represents Fe or Zn or an iron mixture of Fe and Zn in any proportion;
cu + Mg represents Cu or Mg or an iron mixture of Cu and Mg in any proportion;
cr + Bi represents Cr or Bi or an iron mixture of Cr and Bi in any proportion;
mn + Pb represents Mn or Pb or an iron mixture of Mn and Pb in any proportion.
A typical aluminum alloy is an aluminum-based alloy with the number 6 in table 1, to which a trace amount of rare earth element is added, and the graphene aluminum-based composite material can be prepared according to the following steps.
The whole preparation process comprises a smelting step and an ingot casting step;
wherein the smelting step comprises the following steps:
step Y1: melting the aluminum ingot, wherein the melting temperature is limited within 730 ℃; in this step, the aluminum ingot is melted in a crucible.
Step Y2: adding silicon and rare earth elements with specified mass into the melted aluminum alloy liquid, and heating and melting; in the step, the silicon block size is suitable for being completely immersed into the aluminum alloy liquid.
Step Y3: after the silicon is completely melted, uniformly stirring, and adjusting the temperature to 680-700 ℃;
step Y4: pressing magnesium into the aluminum alloy liquid, adding the rest components after the magnesium is completely melted, and cooling to form an ingot; in the step, magnesium is pressed into the aluminum alloy liquid by adopting a bell jar, the bell jar is moved, and after the magnesium is completely melted, the bell jar is lifted out of the aluminum alloy liquid.
The ingot casting step comprises the following steps:
step J1: extruding; step J11: quenching;
step J2: straightening tension;
step J3: cutting a head and sampling;
step J4: rolling and straightening;
step J41: artificial ageing of
Step J42: and (6) straightening by hand.
Step J43: and (5) annealing the finished product.
The mechanical properties of the copper-based alloy C3604 after adding a trace amount of rare earth element in the step Y2 are compared as shown in Table 2:
| performance designation | 61 | 62 | 63 | 63 | 65 | C3604 |
| Coefficient of thermal conductivity | 143 | 144 | 142 | 144 | 145 | 120 |
| Tensile strength | 475 | 473 | 474 | 474 | 475 | 470.03 |
| Hardness HRB | 73 | 75 | 74 | 75 | 78 | 70-80 |
| Density of | 2.78 | 2.78 | 2.78 | 2.78 | 2.78 | 8.6 |
In the above table 2, the products with numbers 61 to 65 are aluminum-based alloys with number 1 in table 1, and the weight percentages of trace rare earth elements added are as follows: 0.12%, 0.10%, 0.08%, 0.07%, 0.06%.
The tensile strength is in units of Mpa, the thermal conductivity is in units of W/m K, and the density is in units of grams per cubic centimeter.
As can be seen from the above, the aluminum-based alloy of the present embodiment has similar mechanical strength to the copper-based alloy, and sometimes even better specific gravity than the copper-based alloy, but much lower specific gravity than the copper-based alloy.
Claims (10)
1. A graphene aluminum-based synthetic material is characterized in that: when the aluminum-based alloy is cast, rare earth elements are added in a trace manner, the total added mass of the rare earth elements is 0.15-0.05% of the total mass of the aluminum-based alloy, wherein the mass of any one rare earth element added is less than 0.05% of the total mass of the aluminum-based alloy.
2. The graphene aluminum-based composite material according to claim 1, characterized in that: the aluminium-based alloy comprising the following alloy constituents in% by weight
Wherein: fe + Zn represents Fe or Zn or an iron mixture of Fe and Zn in any proportion;
cu + Mg represents Cu or Mg or an iron mixture of Cu and Mg in any proportion;
cr + Bi represents Cr or Bi or an iron mixture of Cr and Bi in any proportion;
mn + Pb represents Mn or Pb or an iron mixture of Mn and Pb in any proportion.
3. The graphene aluminum-based composite material according to claim 2, characterized in that: the aluminium-based alloy comprising the following alloy constituents in% by weight
4. A method for producing the graphene aluminum-based composite material according to claim 1, comprising a melting step and an ingot casting step; the method is characterized in that: the smelting step comprises the following steps:
step Y1: melting the aluminum ingot, wherein the melting temperature is limited within 730 ℃;
step Y2: adding silicon and rare earth elements with specified mass into the melted aluminum alloy liquid, and heating and melting;
step Y3: after the silicon is completely melted, uniformly stirring, and adjusting the temperature to 680-700 ℃;
step Y4: pressing magnesium into the aluminum alloy liquid, adding the rest components after the magnesium is completely melted, and cooling to form an ingot.
5. The method of claim 4, wherein: in the step Y2, the silicon lump size is suitable for being completely immersed into the aluminum alloy liquid.
6. The method of claim 4, wherein: in the step Y4, the magnesium is pressed into the aluminum alloy liquid by using a bell jar, the bell jar is moved, and after the magnesium is completely melted, the bell jar is lifted out of the aluminum alloy liquid.
7. The method of claim 4, wherein: the ingot casting step comprises the following steps:
step J1: extruding;
step J2: straightening tension;
step J3: cutting a head and sampling;
step J4: and (6) rolling and straightening.
8. The method of claim 7, wherein:
before the step J2, the method further includes a step J11: quenching;
after the step J4, the method further comprises a step J42: and (6) straightening by hand.
9. The method of claim 8, wherein:
before the step J42, the method further includes a step J41: and (5) artificial aging.
10. The method according to claim 8 or 9, characterized in that:
after the step J42, the method further includes a step J43: and (5) annealing the finished product.
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| CN202011215041.4A CN112322946A (en) | 2020-11-03 | 2020-11-03 | Graphene aluminum-based synthetic material and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5776269A (en) * | 1995-08-24 | 1998-07-07 | Kaiser Aluminum & Chemical Corporation | Lead-free 6000 series aluminum alloy |
| CN103924137A (en) * | 2014-04-30 | 2014-07-16 | 南通易实工业制造有限公司 | High-strength aluminium alloy |
| CN104364409A (en) * | 2012-06-15 | 2015-02-18 | 美铝公司 | Improved aluminum alloys and methods for producing the same |
| CN104805342A (en) * | 2015-05-21 | 2015-07-29 | 湖南稀土金属材料研究院 | Aluminum alloy material, preparing method of aluminum alloy material and application of aluminum alloy material |
| CN110669964A (en) * | 2019-10-31 | 2020-01-10 | 辽宁忠旺集团有限公司 | High-performance rare earth Al-Mg-Si aluminum alloy extrusion material and preparation method thereof |
-
2020
- 2020-11-03 CN CN202011215041.4A patent/CN112322946A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5776269A (en) * | 1995-08-24 | 1998-07-07 | Kaiser Aluminum & Chemical Corporation | Lead-free 6000 series aluminum alloy |
| CN104364409A (en) * | 2012-06-15 | 2015-02-18 | 美铝公司 | Improved aluminum alloys and methods for producing the same |
| CN103924137A (en) * | 2014-04-30 | 2014-07-16 | 南通易实工业制造有限公司 | High-strength aluminium alloy |
| CN104805342A (en) * | 2015-05-21 | 2015-07-29 | 湖南稀土金属材料研究院 | Aluminum alloy material, preparing method of aluminum alloy material and application of aluminum alloy material |
| CN110669964A (en) * | 2019-10-31 | 2020-01-10 | 辽宁忠旺集团有限公司 | High-performance rare earth Al-Mg-Si aluminum alloy extrusion material and preparation method thereof |
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Application publication date: 20210205 |