CN110592407A - Preparation method of Cu-Al-Sb conductive alloy - Google Patents
Preparation method of Cu-Al-Sb conductive alloy Download PDFInfo
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- CN110592407A CN110592407A CN201911005125.2A CN201911005125A CN110592407A CN 110592407 A CN110592407 A CN 110592407A CN 201911005125 A CN201911005125 A CN 201911005125A CN 110592407 A CN110592407 A CN 110592407A
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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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium 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
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/026—Alloys based on copper
Abstract
A preparation method of a Cu-Al-Sb conductive alloy comprises the following components, by mass, 2% ~ 10% of aluminum, 0.5% of antimony, ~ 10% of copper and the balance of the copper, wherein the preparation method of the conductive alloy comprises the steps of (1) placing pure Cu, Cu-Al and Cu-Sb intermediate alloy in a vacuum medium-frequency electromagnetic induction furnace to be melted, uniformly stirring the melted alloy through electromagnetic stirring, casting the melted alloy into a graphite mold to prepare a cuboid ingot, (2) placing the ingot into a heat treatment furnace to perform homogenization treatment, (3) cooling the alloy ingot after the homogenization treatment to 700 ~ 800 ℃ to perform forging, cooling the alloy to room temperature after the hot forging, and (4) placing the forged alloy into the heat treatment furnace to perform aging treatment.
Description
Technical Field
The invention relates to a preparation method of a Cu-Al-Sb conductive alloy, belonging to the technical field of conductive alloy materials.
Background
The Cu-Al alloy is an important structural material widely applied in the field of mechanical industry, the cost is low, and the Cu-Al alloy has good castability, corrosion resistance, thermal conductivity and impact resistance, but the binary Cu-Al alloy has insufficient properties such as hardness, yield ratio, wear resistance and the like, so that the application of the Cu-Al alloy is limited, and the solid solubility of aluminum in copper at room temperature is high (9.4% by mass), and the solid-dissolved aluminum atoms cause distortion of copper matrix lattices to increase the scattering effect on electrons, so that the alloy resistance is increased, and the conductivity is remarkably reduced, so that how to more effectively reduce the aluminum solid-dissolved in the copper is the key for further improving the conductivity of the Cu-Al alloy and expanding the large-scale application of the materials.
Disclosure of Invention
The invention aims to improve the strength and conductivity of Cu-Al alloy and provides a Cu-Al-Sb conductive alloy and a preparation method thereof.
The technical scheme of the invention is that a proper amount of Sb (stibium) element is added into the Cu-Al alloy, and the strength and the electric and heat conducting performance of the material are effectively improved by refining crystal grains, forming AlSb particles and promoting the precipitation of the aluminium element from a copper matrix.
The alloy comprises, by mass, 2% of ~ 10% of aluminum, 0.5% of ~ 10% of antimony and the balance of copper.
A preparation method of a Cu-Al-Sb conductive alloy comprises the following steps:
(1) pure Cu, Cu-Al and Cu-Sb intermediate alloys according to the component ratio are placed in a vacuum medium-frequency electromagnetic induction furnace to be melted, and are cast into a graphite mold after being uniformly stirred electromagnetically to prepare a cuboid ingot;
(2) putting the ingot in the step (1) into a heat treatment furnace, heating to 900 ~ 950 ℃, and preserving heat for 1 ~ 2h for homogenization treatment;
(3) cooling the homogenized alloy ingot to 700 ~ 800 ℃ for forging, and cooling to room temperature after hot forging;
(4) and (4) placing the forged alloy obtained in the step (3) into a heat treatment furnace, heating to a certain temperature within the range of 250 ~ 550 ℃, preserving heat for 1 ~ 10h, and carrying out aging treatment.
In the step (1), the melting temperature of the vacuum medium-frequency electromagnetic induction furnace is 1100 ~ 1200 ℃, and the vacuum degree is lower than 0.1Pa atmospheric pressure.
The invention has the beneficial effects that the strength and the electric and heat conducting performance of the material are effectively improved by adding a proper amount of Sb element into the Cu-Al alloy. The Cu-Al-Sb alloy disclosed by the invention is simple in preparation method, small in required processing deformation, short in production period and suitable for large-scale industrial production; the alloy has wide performance range, and can obtain various intensity and conductivity matching by controlling components and a preparation process.
Detailed Description
Example 1:
the Cu-Al-Sb conductive alloy comprises the following components in percentage by mass: 2% of Al, 0.5% of Sb and the balance of Cu.
The preparation method of the Cu-Al-Sb conductive alloy comprises the following steps:
(1) pure Cu, Cu-Al and Cu-Sb intermediate alloys according to the component ratio are placed in a vacuum medium-frequency electromagnetic induction furnace, melted under the atmospheric pressure of less than 0.1Pa and at the temperature of 1100 ℃, and are cast into a graphite mold after being uniformly stirred electromagnetically to prepare a cuboid cast ingot.
(2) And putting the cast ingot into a heat treatment furnace, heating to 900 ℃, and preserving heat for 2 hours for homogenization treatment.
(3) And cooling the homogenized alloy ingot to 700 ℃ for forging, and cooling to room temperature after hot forging.
(4) And (3) putting the forged alloy into a heat treatment furnace, heating to 250 ℃, and preserving heat for 10 hours for aging treatment.
Example 2:
the Cu-Al-Sb conductive alloy comprises the following components in percentage by mass: 5% of Al, 2% of Sb and the balance of Cu.
The preparation method of the Cu-Al-Sb conductive alloy comprises the following steps:
(1) pure Cu, Cu-Al and Cu-Sb intermediate alloys according to the component ratio are placed in a vacuum medium-frequency electromagnetic induction furnace, melted under the atmospheric pressure of less than 0.1Pa and at the temperature of 1100 ℃, and are cast into a graphite mold after being uniformly stirred electromagnetically to prepare a cuboid cast ingot.
(2) And putting the cast ingot into a heat treatment furnace, heating to 900 ℃, and preserving heat for 1.5h for homogenization treatment.
(3) And cooling the homogenized alloy ingot to 700 ℃ for forging, and cooling to room temperature after hot forging.
(4) And (3) putting the forged alloy into a heat treatment furnace, heating to 300 ℃, and preserving heat for 8 hours for aging treatment.
Example 3:
the Cu-Al-Sb conductive alloy comprises the following components in percentage by mass: 8% of Al, 5% of Sb and the balance of Cu.
The preparation method of the Cu-Al-Sb conductive alloy comprises the following steps:
(1) pure Cu, Cu-Al and Cu-Sb intermediate alloys according to the component ratio are placed in a vacuum medium-frequency electromagnetic induction furnace, melted under the atmospheric pressure of less than 0.1Pa and at the temperature of 1200 ℃, and are cast into a graphite mold after being uniformly stirred electromagnetically to prepare a cuboid cast ingot.
(2) And putting the cast ingot into a heat treatment furnace, heating to 950 ℃, and preserving heat for 1h for homogenization treatment.
(3) And cooling the homogenized alloy ingot to 800 ℃ for forging, and cooling to room temperature after hot forging.
(4) And (3) putting the forged alloy into a heat treatment furnace, heating to 350 ℃, and preserving heat for 6 hours for aging treatment.
Example 4:
the Cu-Al-Sb conductive alloy comprises the following components in percentage by mass: 8% of Al, 8% of Sb and the balance of Cu.
The preparation method of the Cu-Al-Sb conductive alloy comprises the following steps:
(1) pure Cu, Cu-Al and Cu-Sb intermediate alloys according to the component ratio are placed in a vacuum medium-frequency electromagnetic induction furnace, melted under the atmospheric pressure of less than 0.1Pa and at the temperature of 1200 ℃, and are cast into a graphite mold after being uniformly stirred electromagnetically to prepare a cuboid cast ingot.
(2) And putting the cast ingot into a heat treatment furnace, heating to 950 ℃, and preserving heat for 1.5h for homogenization treatment.
(3) And cooling the homogenized alloy ingot to 800 ℃ for forging, and cooling to room temperature after hot forging.
(4) And (3) putting the forged alloy into a heat treatment furnace, heating to 400 ℃, and preserving heat for 4 hours for aging treatment.
Claims (3)
1. A preparation method of Cu-Al-Sb conductive alloy is characterized in that a proper amount of antimony element is added into Cu-Al series alloy, and the grain refinement, the AlSb particle formation and the promotion of the precipitation of the aluminum element from a copper matrix are carried out;
the alloy comprises, by mass, 2% of ~ 10% of aluminum, 0.5% of ~ 10% of antimony and the balance of copper.
2. The method for preparing a Cu-Al-Sb conductive alloy according to claim 1, characterized by comprising the steps of:
(1) pure Cu, Cu-Al and Cu-Sb intermediate alloys according to the component ratio are placed in a vacuum medium-frequency electromagnetic induction furnace to be melted, and are cast into a graphite mold after being uniformly stirred electromagnetically to prepare a cuboid ingot;
(2) putting the cast ingot into a heat treatment furnace, heating to 900 ~ 950 ℃, and preserving heat for 1 ~ 2h for homogenization treatment;
(3) cooling the homogenized alloy ingot to 700 ~ 800 ℃ for forging, and cooling to room temperature after hot forging;
(4) and (3) placing the alloy in the forging state into a heat treatment furnace, heating to a certain temperature of 250 ~ 550 ℃ and 550 ℃, and preserving heat for 1 ~ 10h for aging treatment.
3. The method for preparing the Cu-Al-Sb conductive alloy as claimed in claim 2, wherein the melting temperature of the vacuum medium frequency induction furnace is 1100 ~ 1200 ℃ and the vacuum degree is lower than 0.1Pa atmospheric pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911005125.2A CN110592407A (en) | 2019-10-22 | 2019-10-22 | Preparation method of Cu-Al-Sb conductive alloy |
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| CN201911005125.2A CN110592407A (en) | 2019-10-22 | 2019-10-22 | Preparation method of Cu-Al-Sb conductive alloy |
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Citations (5)
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|---|---|---|---|---|
| CN102918182A (en) * | 2010-04-15 | 2013-02-06 | 米巴·格来特来格有限公司 | Multi-layer plain bearing having an anti-fretting layer |
| CN104726743A (en) * | 2013-12-18 | 2015-06-24 | 财团法人金属工业研究发展中心 | Brass alloy and manufacturing method thereof |
| CN105087988A (en) * | 2014-05-11 | 2015-11-25 | 镇江忆诺唯记忆合金有限公司 | Composite rare earth additive capable of improving thermal-fatigue-resistant performance of copper-aluminum based alloy |
| CN110273081A (en) * | 2019-07-30 | 2019-09-24 | 江西省科学院应用物理研究所 | A kind of Cu-Fe-Ti electrical conductivity alloy and preparation method thereof |
| CN111235441A (en) * | 2020-02-24 | 2020-06-05 | 山东南山铝业股份有限公司 | Sb-containing heat-resistant aluminum alloy and preparation method thereof |
-
2019
- 2019-10-22 CN CN201911005125.2A patent/CN110592407A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102918182A (en) * | 2010-04-15 | 2013-02-06 | 米巴·格来特来格有限公司 | Multi-layer plain bearing having an anti-fretting layer |
| CN104726743A (en) * | 2013-12-18 | 2015-06-24 | 财团法人金属工业研究发展中心 | Brass alloy and manufacturing method thereof |
| CN105087988A (en) * | 2014-05-11 | 2015-11-25 | 镇江忆诺唯记忆合金有限公司 | Composite rare earth additive capable of improving thermal-fatigue-resistant performance of copper-aluminum based alloy |
| CN110273081A (en) * | 2019-07-30 | 2019-09-24 | 江西省科学院应用物理研究所 | A kind of Cu-Fe-Ti electrical conductivity alloy and preparation method thereof |
| CN111235441A (en) * | 2020-02-24 | 2020-06-05 | 山东南山铝业股份有限公司 | Sb-containing heat-resistant aluminum alloy and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| DUŠKO MINIC ET.: "Experimental investigation and thermodynamic calculations of the Al–Cu–Sb phase diagram", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
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Application publication date: 20191220 |