CN113802074A - Hot isostatic pressing densification method suitable for spray deposition of high-strength aluminum alloy - Google Patents
Hot isostatic pressing densification method suitable for spray deposition of high-strength aluminum alloy Download PDFInfo
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- CN113802074A CN113802074A CN202110893546.4A CN202110893546A CN113802074A CN 113802074 A CN113802074 A CN 113802074A CN 202110893546 A CN202110893546 A CN 202110893546A CN 113802074 A CN113802074 A CN 113802074A
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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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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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
- C22C21/10—Alloys based on aluminium with zinc 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
- C22F1/053—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 zinc as the next major constituent
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Abstract
The invention discloses a hot isostatic pressing densification method suitable for spray deposition of a high-strength aluminum alloy, which comprises the following steps of: selecting a spray deposition alloy billet with the original density of 90-98% and the component of Al- (9-12.5) Zn- (2.0-3.0) Mg- (1.5-2.0) Cu- (0.1-0.3) Zr; placing the alloy billet into a pressure container, sealing the pressure container, vacuumizing, and pumping argon into the pressure container to a certain pressure; densifying the alloy billet by adopting a heating and pressurizing mode; wherein the densification temperature is 400-500 ℃, the inert gas pressure is 80-150 MPa, and the heat preservation time is 1-5 h; and stopping heating after the pressure maintaining is finished, cooling the alloy billet along with the furnace, unloading the pressure of the pressure container, unsealing when the temperature in the pressure container is lower than 50 ℃ and the pressure is atmospheric pressure, taking out the alloy billet and cooling to the room temperature. The blank prepared by the method has excellent densification effect, and the density of the densified alloy is more than 99%; the alloy blank does not generate macroscopic deformation after densification, and the alloy structure keeps an equiaxial state before densification.
Description
Technical Field
The invention relates to the technical field of aluminum alloy preparation, in particular to a hot isostatic pressing densification method suitable for spray deposition of high-strength aluminum alloy.
Background
The Al-Zn-Mg-Cu (7XXX series) alloy has a wide application in the fields of aerospace, weaponry and the like due to the advantages of high strength, low density and the like. The series of alloys prepared by adopting the spray deposition technology have the total content of alloying elements over 15wt percent, the strength of the alloys can reach 800MPa or even higher, and the alloys have extremely wide application prospect. However, due to the particularity of the spray deposition process, a certain amount of pores inevitably exist in the prepared deposition billet, the existence of the pores makes the spray deposition alloy incapable of being directly forged and formed, and the adverse effect of the pores needs to be eliminated through densification treatment. At present, densification processes for spray-deposited ultrahigh-strength aluminum alloy are limited to hot extrusion and hot rolling, and although the densification methods and the like can enable the alloy to achieve better compactness, strong crystallographic texture and streamline structure can be formed in the alloy, and when the densification blanks are used for further forging deformation, forging defects such as streamline disorder and the like are easily generated and anisotropy of the mechanical property of forgings is easily caused.
Disclosure of Invention
The invention aims to provide a hot isostatic pressing densification method suitable for spray deposition of high-strength aluminum alloy, so as to solve the problem of low density of the high-strength aluminum alloy in the prior art.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a method of hot isostatic compaction for spray deposited high strength aluminium alloys comprising the steps of:
selecting a spray deposition alloy billet with the original density of 90-98% and the component of Al- (9-12.5) Zn- (2.0-3.0) Mg- (1.5-2.0) Cu- (0.1-0.3) Zr;
placing the alloy billet into a pressure container, sealing the pressure container, vacuumizing, and pumping argon into the pressure container to a certain pressure;
densifying the alloy billet by adopting a heating and pressurizing mode; wherein the densification temperature is 400-500 ℃, the inert gas pressure is 80-150 MPa, and the heat preservation time is 1-5 h;
and stopping heating after the pressure maintaining is finished, cooling the alloy billet along with the furnace, unloading the pressure of the pressure container, unsealing when the temperature in the pressure container is lower than 50 ℃ and the pressure is atmospheric pressure, taking out the alloy billet and cooling to the room temperature.
Further, the heating and heat preservation mode in the process of densifying the alloy billet is as follows: the temperature is kept at 450 ℃ for 5 h.
Further, the heating and heat preservation mode in the process of densifying the alloy billet is as follows: keeping the temperature at 455 ℃ for 4h, and keeping the temperature for 1h after the temperature is raised to 475 ℃.
Further, the heating and heat preservation mode in the process of densifying the alloy billet is as follows: keeping the temperature at 465 ℃ for 4h, heating to 485 ℃ and keeping the temperature for 1 h.
Further, the pressure vessel is a hot isostatic pressure vessel.
Further, the size range of the alloy billet is less than phi 500 x 900 mm.
According to the technical scheme, the embodiment of the invention at least has the following effects:
the blank prepared by the method has excellent densification effect, and the density of the densified alloy is more than 99%; the alloy blank does not generate macroscopic deformation after densification, and the alloy structure keeps an equiaxial state before densification.
Drawings
FIG. 1 is a comparison of the texture of blanks obtained before densification and according to three embodiments of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Aiming at the problems mentioned in the background technology, the invention provides a hot isostatic pressing densification method suitable for spray deposition of ultrahigh-strength aluminum alloy, so that the densified alloy has excellent density, and the original tissue morphology characteristics are maintained, therefore, the method can be used for preparing prefabricated blanks of forgings with various complex shapes and can also be used as a densification method of final alloy products.
A method of hot isostatic compaction for spray deposited high strength aluminium alloys comprising the steps of:
step 1, selecting a spray deposition alloy billet with the original density of 90-98% and the component of Al- (9-12.5) Zn- (2.0-3.0) Mg- (1.5-2.0) Cu- (0.1-0.3) Zr; the size range of the alloy billet is less than phi 500 multiplied by 900 mm.
Step 2, placing the alloy billet into a pressure container, sealing the pressure container, vacuumizing, and pumping argon into the pressure container to a certain pressure;
step 3, densifying the alloy billet by adopting a heating and pressure increasing mode; the initial temperature and pressure rise time is less than 1h, the densification temperature is 400-500 ℃, the inert gas pressure is 80-150 MPa, and the heat preservation time is 1-5 h.
And 4, stopping heating after pressure maintaining is finished, cooling the alloy billet along with the furnace, unloading the pressure of the pressure container, unsealing when the temperature in the pressure container is lower than 50 ℃ and the pressure is atmospheric pressure, taking out the alloy billet, and cooling to the room temperature.
Example 1
The components Al-10.8Zn-2.45Mg-1.7Cu-0.17Zr of the billet are sprayed and deposited, the size phi of the billet is 200 multiplied by 280, and the original density is 96.7 percent.
Hot isostatic pressing densification is carried out on an Antai technology limited hot isostatic pressing device, the densification pressure is 130MPa, the densification time is 5 hours, and the temperature is kept for 5 hours at 450 ℃.
And stopping heating after the pressure maintaining is finished, cooling the alloy billet along with the furnace, unloading the pressure of the pressure container, unsealing when the temperature in the pressure container is lower than 50 ℃ and the pressure is atmospheric pressure, taking out the alloy billet and cooling to the room temperature.
The densified alloy blank does not generate macroscopic deformation, the alloy structure keeps an equiaxial state before densification, and the density of the densified alloy is 99.3 percent.
Example 2
The components Al-10.8Zn-2.45Mg-1.7Cu-0.17Zr of the billet are sprayed and deposited, the size phi of the billet is 200 multiplied by 280, and the original density is 96.7 percent.
Hot isostatic pressing densification is carried out on an Antai technology limited hot isostatic pressing device, the densification pressure is 130MPa, the densification time is 5 hours, the temperature is kept for 4 hours at 455 ℃, and the temperature is kept for 1 hour at the temperature of 475 ℃.
And stopping heating after the pressure maintaining is finished, cooling the alloy billet along with the furnace, unloading the pressure of the pressure container, unsealing when the temperature in the pressure container is lower than 50 ℃ and the pressure is atmospheric pressure, taking out the alloy billet and cooling to the room temperature.
The densified alloy blank does not generate macroscopic deformation, the alloy structure keeps an equiaxial state before densification, and the density of the densified alloy is 99.6%.
Example 3
The components Al-10.8Zn-2.45Mg-1.7Cu-0.17Zr of the billet are sprayed and deposited, the size phi of the billet is 200 multiplied by 280, and the original density is 96.7 percent.
Hot isostatic pressing densification is carried out on an Antai technology limited hot isostatic pressing device, the densification pressure is 130MPa, the densification time is 5 hours, the temperature is kept for 4 hours under the condition of 465 ℃, and the temperature is kept for 1 hour under the condition of heating to 485 ℃.
And stopping heating after the pressure maintaining is finished, cooling the alloy billet along with the furnace, unloading the pressure of the pressure container, unsealing when the temperature in the pressure container is lower than 50 ℃ and the pressure is atmospheric pressure, taking out the alloy billet and cooling to the room temperature.
The densified alloy blank does not generate macroscopic deformation, the alloy structure keeps an equiaxial state before densification, and the density of the densified alloy is 99.7%.
According to the three embodiments, the alloy blanks obtained by different temperature-raising and heat-preserving systems have different densities, the alloy blanks obtained by the method do not generate macroscopic deformation, the alloy tissues keep an equiaxial state before densification, and the alloy densities after densification are all larger than 99%.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (6)
1. A method of hot isostatic compaction for spray deposited high strength aluminum alloys, comprising the steps of:
selecting a spray deposition alloy billet with the original density of 90-98% and the component of Al- (9-12.5) Zn- (2.0-3.0) Mg- (1.5-2.0) Cu- (0.1-0.3) Zr;
placing the alloy billet into a pressure container, sealing the pressure container, vacuumizing, and pumping argon into the pressure container to a certain pressure;
densifying the alloy billet by adopting a heating and pressurizing mode; wherein the densification temperature is 400-500 ℃, the inert gas pressure is 80-150 MPa, and the heat preservation time is 1-5 h;
and stopping heating after the pressure maintaining is finished, cooling the alloy billet along with the furnace, unloading the pressure of the pressure container, unsealing when the temperature in the pressure container is lower than 50 ℃ and the pressure is atmospheric pressure, taking out the alloy billet and cooling to the room temperature.
2. A densification method as claimed in claim 1 suitable for spray deposition of high strength aluminium alloys, wherein the temperature increase and holding during densification of the alloy ingot is in the form of: the temperature is kept at 450 ℃ for 5 h.
3. A densification method as claimed in claim 1 suitable for spray deposition of high strength aluminium alloys, wherein the temperature increase and holding during densification of the alloy ingot is in the form of: keeping the temperature at 455 ℃ for 4h, and keeping the temperature for 1h after the temperature is raised to 475 ℃.
4. A densification method as claimed in claim 1 suitable for spray deposition of high strength aluminium alloys, wherein the temperature increase and holding during densification of the alloy ingot is in the form of: keeping the temperature at 465 ℃ for 4h, heating to 485 ℃ and keeping the temperature for 1 h.
5. A densification process suitable for spray deposition of a high strength aluminium alloy according to claim 1, characterised in that the pressure vessel is a hot isostatic pressure vessel.
6. A densification method suitable for spray depositing high strength aluminium alloys according to claim 1, wherein the alloy billet has a size range of less than Φ 500 x 900 mm.
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| CN202110893546.4A CN113802074A (en) | 2021-08-04 | 2021-08-04 | Hot isostatic pressing densification method suitable for spray deposition of high-strength aluminum alloy |
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| CN202110893546.4A CN113802074A (en) | 2021-08-04 | 2021-08-04 | Hot isostatic pressing densification method suitable for spray deposition of high-strength aluminum alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116117139A (en) * | 2023-02-27 | 2023-05-16 | 湖南东方钪业股份有限公司 | Aluminum scandium alloy target material and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100282428A1 (en) * | 2009-05-06 | 2010-11-11 | United Technologies Corporation | Spray deposition of l12 aluminum alloys |
| CN105220093A (en) * | 2014-05-28 | 2016-01-06 | 北京有色金属研究总院 | A kind of densification method for reaction-injection moulding ultrahigh-strength aluminum alloy material |
| CN107649687A (en) * | 2017-10-12 | 2018-02-02 | 哈尔滨工业大学 | A kind of method for improving jet deposition ultra-high-strength aluminum alloy consistency |
| CN107675112A (en) * | 2017-10-12 | 2018-02-09 | 哈尔滨工业大学 | A kind of jacket deformation method of ultra-high-strength aluminum alloy |
| CN112375946A (en) * | 2020-10-27 | 2021-02-19 | 湖南农业大学 | High Mg2Si-aluminum alloy, design and rapid solidification preparation method and application thereof |
-
2021
- 2021-08-04 CN CN202110893546.4A patent/CN113802074A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100282428A1 (en) * | 2009-05-06 | 2010-11-11 | United Technologies Corporation | Spray deposition of l12 aluminum alloys |
| CN105220093A (en) * | 2014-05-28 | 2016-01-06 | 北京有色金属研究总院 | A kind of densification method for reaction-injection moulding ultrahigh-strength aluminum alloy material |
| CN107649687A (en) * | 2017-10-12 | 2018-02-02 | 哈尔滨工业大学 | A kind of method for improving jet deposition ultra-high-strength aluminum alloy consistency |
| CN107675112A (en) * | 2017-10-12 | 2018-02-09 | 哈尔滨工业大学 | A kind of jacket deformation method of ultra-high-strength aluminum alloy |
| CN112375946A (en) * | 2020-10-27 | 2021-02-19 | 湖南农业大学 | High Mg2Si-aluminum alloy, design and rapid solidification preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116117139A (en) * | 2023-02-27 | 2023-05-16 | 湖南东方钪业股份有限公司 | Aluminum scandium alloy target material and preparation method and application thereof |
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