CN109136692A - Cast aluminium alloy gold and preparation method thereof - Google Patents
Cast aluminium alloy gold and preparation method thereof Download PDFInfo
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- CN109136692A CN109136692A CN201811217827.2A CN201811217827A CN109136692A CN 109136692 A CN109136692 A CN 109136692A CN 201811217827 A CN201811217827 A CN 201811217827A CN 109136692 A CN109136692 A CN 109136692A
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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
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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
- C22C1/026—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
- C22C1/02—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
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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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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- Crystallography & Structural Chemistry (AREA)
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- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The present invention relates to a kind of heat resistant type cast aluminium alloy golds and preparation method thereof, which is made of following components and weight percent: Cu 5.0~5.5%；Ni 1.0~1.3%；Mn 0.3~0.4%；Ti 0.2~0.25%；V 0.01~0.25%；Impurity < 0.3%；Al surplus.The novel casting aluminum alloy that the present invention develops tensile strength at 320 DEG C is higher than ZL201A and ZL208 alloy up to 120MPa, and room temperature intensity is higher than ZL208 alloy up to 340MPa or more.Therefore, birmastic comprehensive mechanical property of the invention is higher than ZL201A alloy and ZL208 alloy.
Description
Technical field
The present invention relates to cast aluminium alloy gold field, in particular to a kind of heat resistant type cast aluminium alloy gold and preparation method thereof.
Background technique
As the aluminium alloy part to play a crucial role in aero-engine dynamical system, its structure is complicated, needs to exist for a long time
It is run under high temperature, high pressure, high speed and friction environment, it is desirable that there is excellent casting character and excellent room temperature and high-temperature behavior.Casting
The raising of aluminium alloy room temperature intensity is made mainly by hardening constituents such as Al2Si, Al2Cu of the formation of the area G-P.Current country's room-temperature property
Preferable alloy has ZL114A, ZL205A, ZL201A etc., and wherein the room temperature intensity of ZL205A can reach 500MPa or more, have
The features such as extraordinary room-temperature mechanical property, but its complicated component, price is more expensive, and casting character is poor, limits it in general industry
On application.The elevated temperature strength and high temperature resistant dispersed granules that the raising of alloy high-temp performance then needs to improve hardening constituent are in high temperature shape
To the pinning effect of dislocation during change, the formation of High-Temperature Strengthening phase except with heat treating regime have outside the Pass also with the ingredient of hardening constituent
And complexity is related, the high-temperature behavior of dispersed granules then with formed intermetallic compound atom outermost electron bond strength
It is related with the symbiosis and epibiosis of matrix with dispersed granules.Currently, the research about heat-resisting aluminium alloy is concentrated mainly on Ag, Re, Sc etc.
In terms of influence of the element to hardening constituent and dispersed granules, but Sc, Ag are expensive metal, and economy is lower, needs to seek
Look for the new element that can substitute these elements.Therefore, the research of novel casting heat-resisting aluminium alloy is increasingly by research and production
The attention of department.
Casting heat-resistant aluminum alloy is broadly divided into Al-Si system and Al-Cu system two types, Al-Si alloy good casting property,
But intensity is low, as ZL105A (AlSi5Cu1Mg) is able to maintain good mechanical property at 150 DEG C or so, but when temperature is more than 250
DEG C when, mechanical property substantially reduces.Al-Cu system cast aluminium alloy gold has good high-temperature behavior, such as ZL208 mostly
(AlCu5Ni2CoZr) at 316 DEG C, tensile strength can achieve 120MPa, but its room temperature intensity is lower, only 220~
250MPa, ZL201A Alloy At Room Temperature intensity are higher, can reach 390MPa or more, but high temperature endurance performance is poor, σ at 300 DEG C100
For 78MPa.
Summary of the invention
The purpose of the present invention is in order to solve the above problem at least one, the present invention provide heat resistant type cast aluminium alloy gold and its
Preparation method.Cast aluminium alloy gold of the invention can be used for making the aircraft engine accessory casing that long-term operating temperature is 350 DEG C
With the high-quality aluminium alloy castings such as shell.
According to an aspect of the present invention, a kind of cast aluminium alloy gold is provided, is made of following components and weight percent:
Cu 5.0~5.5%；Ni 1.0~1.3%；Mn 0.3~0.4%；Ti 0.2~0.25%；V 0.1~
0.25%；Impurity < 0.3%；Al surplus.
Wherein, in the cast aluminium alloy gold, V 0.1~0.25%.
Wherein, in the cast aluminium alloy gold, Cu 5.0~5.5%.
Wherein, impurity includes following components and percentage: Si < 0.1%；Fe < 0.1%；Zn < 0.1%.
According to another aspect of the present invention, the preparation method of the cast aluminium alloy gold is provided, comprising the following steps:
A. by industrial refined aluminium (99.99%), AlCu50A intermediate alloy, AlNi10 intermediate alloy and AlMn10 intermediate alloy
The preheated one-section time at the first temperature.
B. hybrid alloys heating fusing preheating finished.
C. it is to be melted completely after, will after alloy molten solution temperature adjustment to medium temperature with graphite rod stir 10~15min, then rise
Temperature is added portionwise the AlTi10A intermediate alloy and AlV5A intermediate alloy calculated, all melts to intermediate alloy to second temperature
10~15min, which is stirred, with graphite rod after change forms cast aluminium alloy gold melt.
D. cast aluminium alloy gold melt temperature adjustment to third temperature is refined.
E. refining finishes 15~20min of standing, and cast aluminium alloy gold melt temperature adjustment to the 4th temperature is poured coupon by skimming.
F. coupon is successively subjected to solution treatment, quenching treatment and ageing treatment, obtains the stretching of the cast aluminium alloy gold
Coupon.
Wherein, in step c: medium temperature is 720 DEG C, and second temperature is 750 ± 5 DEG C.
Wherein, in step d: third temperature is 730 ± 5 DEG C.
Wherein, in step e: the 4th temperature is 720~725 DEG C.
Wherein, in step d: refining agent is the 0.3%~0.5% of all raw material gross weights, and refining agent is containing inorganic salts
Aluminum refining agent or carbon trichloride.
Wherein, in step f: the temperature of solution treatment is 530 ± 5 DEG C, and the soaking time of solution treatment is 12~18 hours；
The cooling medium of quenching treatment is water, and water temperature is 80~100 DEG C, and quenching shift time is less than 20s；The temperature of ageing treatment is
175 ± 5 DEG C, the soaking time of ageing treatment is 4~6 hours.Room temperature is air-cooled to after soaking time.
Birmastic of the invention, room temperature intensity hardening constituent are Al2Cu, and elevated temperature strength hardening constituent is V element
The L12 phase compound extremely low with matrix coherence high temperature resistant and in the base solubility that be being formed in alloy graining process
Al7V, dislocation motion caused by Al7V is to deforming when drawing by high temperature plays pinning effect, to improve alloy high-temp intensity.
The invention has the following advantages:
Cast aluminium alloy gold room temperature and high-temperature behavior are improved to be comprehensive, the present invention is on the basis of ZL201A, by adjusting Cu member
Cellulose content, and add suitable V element and change cast aluminium alloy gold room temperature and High-Temperature Strengthening phase, reach and is guaranteeing cast aluminium alloy gold room
The purpose of the elevated temperature strength of alloy is improved while warm intensity.The novel casting aluminum alloy that the present invention develops tension at 320 DEG C
Intensity is higher than ZL201A and ZL208 alloy up to 120MPa, and room temperature intensity is higher than ZL208 alloy up to 340MPa or more.Cause
This, birmastic comprehensive mechanical property of the invention is higher than ZL201A alloy and ZL208 alloy.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1, Fig. 2 and Fig. 3 show aobvious under 200 times and 500 times of novel casting alloy of embodiment according to the present invention
Micro-assembly robot picture.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
1 cast aluminium alloy gold X1 of embodiment
Including following components in percentage by weight: Cu:5.0%；Ni:1.3%；Mn:0.4%；Ti:0.25%；V:
0.25%；Other impurity Si < 0.1%；Fe < 0.1%；Zn < 0.1%；Al surplus.
As shown in Figure 1, X1 alloy structure is tiny, uniform, based on crystal grain exists in the form of born of the same parents' shape or dendroid, interdendritic or
θ (Al2Cu) phase, Al3Ni phase and Al6Cu3Ni phase are distributed on crystal boundary, transgranular Dispersed precipitate has T (Al12CuMn2) mutually and Al7V
Phase, since θ (Al2Cu) phase content is less, room-temperature mechanical property is lower, generally 320~340MPa.
2 cast aluminium alloy gold X2 of embodiment
Including following components in percentage by weight: Cu:5.2%；Ni:1.0%；Mn:0.3%；Ti:0.2%；V:0.1%；
Other impurity Si < 0.1%；Fe < 0.1%；Zn < 0.1%；Al surplus.
As shown in Fig. 2, Ti, V content are less in X2 alloy, Ti and V weaken the refining effect of crystal grain, brilliant in alloy structure
Particle size is 2~3 times of X1 alloy grain size, and crystal grain exists in the form of blocky or born of the same parents' shape, the larger-size bone shape in interdendritic
Al6Cu3Ni phase has isolated matrix, and the dispersed granules of transgranular distribution are few compared with X1, and room-temperature mechanical property is lower, are not higher than
320MPa, mechanical behavior under high temperature is lower, and tensile strength is not higher than 120MPa at 320 DEG C.
3 cast aluminium alloy gold X3 of embodiment
Including following components in percentage by weight: Cu:5.3%；Ni:1.2%；Mn:0.35%；Ti:0.22%；V:
0.2%；Other impurity Si < 0.1%；Fe < 0.1%；Zn < 0.1%；Al surplus.
As shown in figure 3, X3 alloy structure form is mainly born of the same parents' shape or dendroid, crystallite dimension is consistent with X1, but interdendritic θ
(Al2Cu) mutually more compared with X1 with the dispersed granules of transgranular distribution, opposite X1 has higher room temperature and mechanical behavior under high temperature.
Aluminium alloy X3 coupon obtained is carried out to tension test when room temperature and 320 DEG C respectively, is obtained under different temperatures
Intensity and elongation percentage, it is as a result specific as shown in Table 1 and Table 2.
Mechanical property when 1. Alloy At Room Temperature of table
Mechanical property at 320 DEG C of 2. alloy of table
By Tables 1 and 2 it is found that the novel casting aluminum alloy X3 that develops of present invention tensile strength at 320 DEG C is reachable
120MPa, is higher than ZL201A and ZL208 alloy, and room temperature intensity is higher than ZL208 alloy up to 340MPa or more.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (10)
1. a kind of cast aluminium alloy gold, which is characterized in that be made of following components and weight percent:
Cu 5.0~5.5%；Ni 1.0~1.3%；Mn 0.3~0.4%；Ti 0.2~0.25%；V 0.1~0.25%；It is miscellaneous
Matter < 0.3%；Al surplus.
2. cast aluminium alloy gold as described in claim 1, which is characterized in that
In the cast aluminium alloy gold, V 0.1~0.25%.
3. cast aluminium alloy gold as described in claim 1, which is characterized in that
In cast aluminium alloy gold, Cu 5.0~5.5%.
4. cast aluminium alloy gold as described in claim 1, which is characterized in that the impurity includes following components and percentage:
Si < 0.1%；Fe < 0.1%；Zn < 0.1%.
5. the preparation method of the cast aluminium alloy gold as described in Claims 1 to 4 is any, which comprises the following steps:
A. industrial refined aluminium, AlCu50A intermediate alloy, AlNi10 intermediate alloy and AlMn10 intermediate alloy is pre- at the first temperature
Hot a period of time；
B. hybrid alloys heating fusing preheating finished；
C. it is to be melted completely after, by alloy molten solution temperature adjustment to medium temperature mix, then heat to second temperature, be added
AlTi10A intermediate alloy and AlV5A intermediate alloy, stirring form cast aluminium alloy gold melt；
D. cast aluminium alloy gold melt temperature adjustment to third temperature is refined；
E. a period of time is stood, cast aluminium alloy gold melt temperature adjustment to the 4th temperature is poured coupon；
F. coupon is successively subjected to solution treatment, quenching treatment and ageing treatment, obtains the tensile test bar of the cast aluminium alloy gold.
6. the preparation method of cast aluminium alloy gold as claimed in claim 5, which is characterized in that in step c:
Medium temperature is 720 DEG C, and second temperature is 750 ± 5 DEG C.
7. the preparation method of cast aluminium alloy gold as claimed in claim 5, which is characterized in that in step d:
Third temperature is 730 ± 5 DEG C.
8. the preparation method of cast aluminium alloy gold as claimed in claim 5, which is characterized in that in step e:
4th temperature is 720~725 DEG C.
9. the preparation method of cast aluminium alloy gold as claimed in claim 5, which is characterized in that in step d:
Refining agent is the 0.3%~0.5% of all raw material gross weights, and refining agent is aluminum refining agent or chlordene containing inorganic salts
Ethane.
10. the preparation method of cast aluminium alloy gold as claimed in claim 5, which is characterized in that in step f:
The temperature of solution treatment is 530 ± 5 DEG C, and the soaking time of solution treatment is 12~18 hours；
The cooling medium of quenching treatment is water, and water temperature is 80~100 DEG C；
The temperature of ageing treatment is 175 ± 5 DEG C, and the soaking time of ageing treatment is 4~6 hours.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110904352A (en) * | 2019-12-05 | 2020-03-24 | 南通爱尔思轻合金精密成型有限公司 | Smelting homogenization process for ZL201 cast aluminum alloy |
| CN113755727A (en) * | 2021-08-23 | 2021-12-07 | 广西大学 | Heat-resistant aluminum-based composite material and preparation method thereof |
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| Publication number | Publication date |
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| CN109136692B (en) | 2020-12-04 |
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