CN107287482A - A kind of preparation method of aluminium alloy - Google Patents
A kind of preparation method of aluminium alloy Download PDFInfo
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- CN107287482A CN107287482A CN201710733307.6A CN201710733307A CN107287482A CN 107287482 A CN107287482 A CN 107287482A CN 201710733307 A CN201710733307 A CN 201710733307A CN 107287482 A CN107287482 A CN 107287482A
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- temperature
- aluminium alloy
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- rare earth
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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
-
- 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
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Conductive Materials (AREA)
Abstract
A kind of preparation method of aluminium alloy, aluminium alloy includes the chemical composition of following percentage by weight：Cu4.87%, Mn0.5%, Ti0.27%, Cd0.16%, V0.12%, Fe<0.1st, Rare Earth Y 1%, surplus is Al；With 12KW crucible electrical resistance furnace smelting aluminium alloy, with the C of percentage by weight 0.6% at 720 730 DEG C2Cl6Refining, stands 20min, 720 DEG C of casting metal samples, and die casting temperature is 250 300 DEG C；Test button carries out solution treatment in box tempering resistance furnace, and temperature is 538 ± 5 DEG C, and the time is 14h；Test button is quickly cooled to room temperature after solution treatment, then carries out Ageing Treatment in box tempering resistance furnace, and temperature is 175 ± 5 DEG C, and the time is 4h.Present invention determine that the addition of optimum Rare Earth Y, to improve the mechanical property of alloy.Rare earth element y has refining effect to ZL205A As-cast Microstructures, and when Y contents are 0.1%, thinning effect is best.Rare earth element y has invigoration effect to ZL205A alloys, but the hydraulic performance decline of alloy can be made by being excessively added.When Y contents are 0.1%, the combination property of alloy is best.
Description
Technical field
The invention belongs to field of alloy preparation technology, and in particular to a kind of preparation method of aluminium alloy.
Background technology
The features such as made of Al-Cu alloy has room temperature and high-temperature behavior height, good machinability, plasticity and good corrosion stability.Its
Middle ZL205A High Strength Cast Aluminum Alloys have that intensity height, good toughness, processability be good, the plating resistance combination property such as good, corrosion-resistant.By
In its excellent combination property, it is widely used in aerospace field.But because its crystallization range is wide, casting character is very poor,
Particularly hot cracking tendency is larger, and shrinkage porosite, shrinkage cavity tendency are also big, and sectional sensitivity is big, is also easy to produce loose, hot tearing and oxide inclusion
Etc. defect.
A small amount of rare earth element is added in made of Al-Cu alloy can often play a part of rotten, refinement.Rare earth element is not only
The obvious refining aluminum alloy as-cast grain of energy, moreover it is possible to refine secondary dendrite spacing, and distribution and the form of the second phase can be improved.There is text
Offer and point out, yttrium-base heavy rare earth not only reduces solid solubility of the copper in aluminium in made of Al-Cu alloy, increase the hardness of the alloy, and
And mutually there is obvious refinement and metamorphism to alloy structure and second.Although improving the research work of made of Al-Cu alloy performance
Carrying out always, rare earth element y has refinement and invigoration effect to alloy, but the hydraulic performance decline of alloy can be made by being excessively added.
The content of the invention
In order to solve problems of the prior art, the invention provides a kind of preparation method of aluminium alloy, it is determined that
The addition of optimum Rare Earth Y, to improve the mechanical property of alloy.
The present invention uses following technical scheme：
A kind of preparation method of aluminium alloy, comprises the following steps：
Step one：Aluminium alloy smelting, aluminium alloy includes the chemical composition of following percentage by weight：Cu4.87%,
Mn0.5%, Ti0.27%, Cd0.16%, V0.12%, Fe<0.1st, Rare Earth Y 1%, surplus is Al；With 12KW crucible electrical resistance furnace
Smelting aluminium alloy, with the C of percentage by weight 0.6% at 720-730 DEG C2Cl6Refining, stands 20min, 720 DEG C of casting metal examinations
Sample, die casting temperature is 250-300 DEG C；
Step 2：Test button carries out solution treatment in box tempering resistance furnace, and temperature is 538 ± 5 DEG C, and the time is
14h；
Step 3：Test button is quickly cooled to room temperature after solution treatment, then when being carried out in box tempering resistance furnace
Effect processing, temperature is 175 ± 5 DEG C, and the time is 4h.
It is preferred that, described solution treatment, temperature is 538 DEG C.
It is preferred that, described Ageing Treatment, temperature is 175 DEG C.
The beneficial effects of the present invention are：
1) rare earth element y has refining effect to ZL205A As-cast Microstructures, and when Y contents are 0.1%, thinning effect is most
It is good.
2) rare earth element y has invigoration effect to ZL205A alloys, but the hydraulic performance decline of alloy can be made by being excessively added.Work as Y
When content is 0.1%, the combination property of alloy is best.
Brief description of the drawings
Fig. 1 is influence curve figure of the Y contents to alloy mechanical property；
Fig. 2 is influence curves of the Y to ZL205A alloy high-temp mechanical properties.
Embodiment
Embodiment 1
A kind of preparation method of aluminium alloy, comprises the following steps：
Step one：Aluminium alloy smelting, aluminium alloy includes the chemical composition of following percentage by weight：Cu4.87%,
Mn0.5%, Ti0.27%, Cd0.16%, V0.12%, Fe<0.1st, Rare Earth Y 1%, surplus is Al；With 12KW crucible electrical resistance furnace
Smelting aluminium alloy, with the C of percentage by weight 0.6% at 720-730 DEG C2Cl6Refining, stands 20min, 720 DEG C of casting metal examinations
Sample, die casting temperature is 250-300 DEG C；
Step 2：Test button carries out solution treatment in box tempering resistance furnace, and temperature is 538 ± 5 DEG C, and the time is
14h；
Step 3：Test button is quickly cooled to room temperature after solution treatment, then when being carried out in box tempering resistance furnace
Effect processing, temperature is 175 ± 5 DEG C, and the time is 4h.
Described solution treatment, temperature is 538 DEG C.
Described Ageing Treatment, temperature is 175 DEG C.
Experimental test procedures：
In stretching-machine testing machine (model：INSTRON-3382 room temperature and 300 DEG C of tension tests are carried out on), sample is determined
Intensity and elongation.
1) influences of the Y to sample mechanical property
Fig. 1 show influence curve of the Y contents to alloy mechanical property.From Fig. 1 (a) as can be seen that addition different content Y
When, the tensile strength of cast alloy is fluctuated between 187-210MPa, with the increase of Y contents, and tensile strength first increases to drop again
Low, when Y contents are 0.1%, alloy strength reaches highest, and its elongation percentage then shows variation tendency in contrast；Fig. 1
(b) it is the room-temperature mechanical property change curve of alloy under condition of heat treatment, the trend for first raising and reducing afterwards is presented in its tensile strength,
When Y contents are 0.1%, intensity is up to 465MPa, and elongation percentage changes conversely therewith；The hard of sample can be seen that by Fig. 1 (c)
Degree is smaller with the increase fluctuation of Y contents, and the highest hardness of as cast condition and condition of heat treatment is respectively 73HB, 144HB.
2) influences of the Y to ZL205A alloy high-temps tissue and performance
When Fig. 2 show 300 DEG C, influence curves of the Y to ZL205A alloy high-temp mechanical properties.As seen from Figure 2, add
Plus during different content Y, 300 DEG C of stretching tensile strength of ZL205A alloys are fluctuated between 164-192MPa.The height of non-modified alloy
Warm tensile strength is 168.9MPa, and elongation percentage is 20%, with the increase of Y contents, and the tensile strength of alloy first increases to be reduced again,
The changing rule of elongation percentage is in contrast.When Y containing amount is 0.1%, ZL205A alloy high-temp intensity is up to 192MPa, prolongs
It is 10.58% to stretch rate, and intensity improves 13.7% compared to non-modified alloy.
Claims (3)
1. a kind of preparation method of aluminium alloy, it is characterised in that comprise the following steps：
Step one：Aluminium alloy smelting, aluminium alloy includes the chemical composition of following percentage by weight：Cu4.87%, Mn0.5%,
Ti0.27%, Cd0.16%, V0.12%, Fe<0.1st, Rare Earth Y 1%, surplus is Al；Closed with 12KW crucible electrical resistance furnace smelting aluminum
Gold, with the C of percentage by weight 0.6% at 720-730 DEG C2Cl6Refining, stands 20min, and 720 DEG C of casting metal samples, mould is poured
It is 250-300 DEG C to note temperature；
Step 2：Test button carries out solution treatment in box tempering resistance furnace, and temperature is 538 ± 5 DEG C, and the time is 14h；
Step 3：Test button is quickly cooled to room temperature after solution treatment, then is carried out in box tempering resistance furnace at timeliness
Reason, temperature is 175 ± 5 DEG C, and the time is 4h.
2. a kind of preparation method of aluminium alloy according to claim 1, it is characterised in that：Described solution treatment, temperature
For 538 DEG C.
3. a kind of preparation method of aluminium alloy according to claim 1, it is characterised in that：Described Ageing Treatment, temperature
For 175 DEG C.
Priority Applications (1)
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|---|---|---|---|
| CN201710733307.6A CN107287482A (en) | 2017-08-24 | 2017-08-24 | A kind of preparation method of aluminium alloy |
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| CN201710733307.6A CN107287482A (en) | 2017-08-24 | 2017-08-24 | A kind of preparation method of aluminium alloy |
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| CN107287482A true CN107287482A (en) | 2017-10-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107962359A (en) * | 2017-11-29 | 2018-04-27 | 安徽恒利增材制造科技有限公司 | A kind of processing method of aluminium alloy aero engine turbine blades |
| CN114672684A (en) * | 2022-03-31 | 2022-06-28 | 江苏恒鑫正宏科技有限公司 | High-strength aluminum alloy section for brake chamber and processing technology thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017155291A (en) * | 2016-03-02 | 2017-09-07 | 株式会社コイワイ | Manufacturing method of high strength aluminum alloy laminate molded body |
-
2017
- 2017-08-24 CN CN201710733307.6A patent/CN107287482A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017155291A (en) * | 2016-03-02 | 2017-09-07 | 株式会社コイワイ | Manufacturing method of high strength aluminum alloy laminate molded body |
Non-Patent Citations (1)
| Title |
|---|
| 张佳琪等: "稀土Y对ZL205A合金组织与力学性能的影响", 《热加工工艺》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107962359A (en) * | 2017-11-29 | 2018-04-27 | 安徽恒利增材制造科技有限公司 | A kind of processing method of aluminium alloy aero engine turbine blades |
| CN114672684A (en) * | 2022-03-31 | 2022-06-28 | 江苏恒鑫正宏科技有限公司 | High-strength aluminum alloy section for brake chamber and processing technology thereof |
| CN114672684B (en) * | 2022-03-31 | 2022-09-13 | 江苏恒鑫正宏科技有限公司 | High-strength aluminum alloy section for brake chamber and processing technology thereof |
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Application publication date: 20171024 |