CN109988953A - High-strength and high ductility Al-Cu system cast aluminium alloy gold and preparation method thereof and railway locomotive components - Google Patents
High-strength and high ductility Al-Cu system cast aluminium alloy gold and preparation method thereof and railway locomotive components Download PDFInfo
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- CN109988953A CN109988953A CN201711482253.7A CN201711482253A CN109988953A CN 109988953 A CN109988953 A CN 109988953A CN 201711482253 A CN201711482253 A CN 201711482253A CN 109988953 A CN109988953 A CN 109988953A
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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
- 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
- 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
Abstract
The invention discloses a kind of high-strength and high ductility Al-Cu system cast aluminium alloy golds and preparation method thereof, the chemical component and its mass percentage of the cast aluminium alloy gold are as follows: Cu 3%~5%, Mn 0.2%~0.8%, Ti 0.1%~0.4%, La+Gd 0.05%~0.5%, Fe≤0.20%, impurity element≤0.50%, surplus are aluminium.It joined micro rare-earth elements La and Gd in the chemical component of high-strength and high ductility Al-Cu system cast aluminium alloy gold of the invention, alloy casting state metallographic structure figure shows that both rare earth elements are distributed along dendrite and crystal boundary, form continuous or discontinuous nethike embrane, to make intercrystalline crack be not easy to extend, the tensile strength and elongation for the high-strength and high ductility Al-Cu system cast aluminium alloy gold for improving the heat crack resistance of alloy, while obtaining are obviously improved.
Description
Technical field
The present invention relates to a kind of cast aluminium alloy golds, and in particular to a kind of high-strength and high ductility Al-Cu system's cast aluminium alloy gold and its system
Preparation Method, and mainly using the railway locomotive components of cast aluminium alloy gold preparation.
Background technique
Al-Cu system cast aluminium alloy gold is typical high-strength and high ductility alloy, has excellent comprehensive mechanical property, such as high-strength
Degree, good ductility and plasticity, good high-temperature behavior and machinability, are the important features of current military project and the product for civilian use
Material is widely used in automobile, in aerospace industry.But the crystallization range of Al-Cu alloy is wide, it is total when solidification
Al in crystalline substance tissue2Cu phase plasticity is poor, and Yi Fasheng drawing crack causes Al-Cu alloy hot cracking tendency serious, seriously constrains Al-Cu
It is the application of alloy.
In Al-Cu system cast aluminium alloy gold, the A201.0 alloy of the A-U5GT alloy of the French trade mark, U.S.'s Aluminum Association trade mark
ZL205A alloy with China's trade mark is Typical Representative therein.But there is also following deficiencies for these high strength cast aluminum alloys:
Above-mentioned alloy although intensity with higher, but plasticity is poor, cannot bear big shock loading.In addition, the casting of these alloys
Poor performance is made, is embodied in that hot cracking tendency is big, mobility is poor, feeding is difficult, mainly uses sand casting process at present
The forming of part is carried out, therefore is restricted in terms of playing material property potentiality.In addition above-mentioned alloy is good in order to obtain
Performance, it is very strict to the control of impurity content, as A-U5GT alloy require iron control 0.1% hereinafter, silicon control
Below 0.05%.ZL205A alloy requires iron control 0.15% hereinafter, silicon is controlled 0.06% hereinafter, this is not only increased
Technology controlling and process ground difficulty, it is necessary to which the raw material of high-quality are provided.
In order to improve the performance of alloy, Chinese patent literature CN 100410406 (application number 200610017102.X) is open
A kind of high strength high toughness casting aluminum alloy, is made of: Cu 4.5~7.0 by weight percentage following components；V 0.05~0.3；
Mn 0.3~0.45；Ti 0.15~0.35；B 0.005~0.06；Cd 0.15~0.25；Zr 0.05~0.2；Pr0.03~
0.7；Al surplus.The document discloses its alloy maximum pulling strength up to 520MPa, and elongation percentage 13.5%, intensity and toughness are equal
Higher than ZL205A alloy.
Chinese patent literature CN 100347322 (application number 200510037105.5) discloses a kind of high tough extruding casting
Make aluminum alloy materials, main component and its mass percentage content are as follows: copper 4.5~5.5%, manganese 0.3~0.6%, micro conjunction
Golden intensified element 0.21~0.85%, remaining is aluminium and inevitable impurity；Added microalloy intensified element be titanium,
Boron, vanadium, zirconium, mischmetal, ingredient and its mass percentage content are as follows: titanium 0.05~0.25%, boron 0.01~0.05%, vanadium
0.05~0.20%, zirconium 0.05~0.20%, mischmetal 0.05~0.15%；Impurity elements of ferrum control is 0.2% hereinafter, silicon
Control is below 0.1%.The typical mechanical property of the alloy material is tensile strength 440MPa, and elongation 22% is suitable for making
Make the aluminum alloy junction component for needing to bear heavy duty.
Chinese patent literature CN 101363092B(application number 200810302668.6) disclose a kind of high-strength casting
Aluminum alloy materials, by weight percentage, the alloying component are Cu2.0~6.0%, Mn0.05%, Ti0.01~0.5%, Cr0.01
~0.2%, Cd0.01~0.4%, Zr 0.01~0.25%, B0.005~0.04%, mixed rare earth 0.05~0.3%, remaining is
Al and micro impurity element.Mixed rare earth is 40~50% containing cerium.The tensile strength of the alloy material is greater than 450Mpa, simultaneously
Elongation percentage is greater than 5%.
Chinese patent literature CN 101363093B(application number 200810302669.0) disclose a kind of high-strength casting
Aluminum alloy materials, by weight percentage, the alloying component are Cu2.0~6.0%, Mn0.05%, Ti0.01~0.5%, Cr0.01
~0.2%, Cd0.01~0.4%, Zr 0.01~0.25%, B0.005~0.04%, rare-earth elements La 0.05~0.3%, remaining
For Al and micro impurity element.The tensile strength of the alloy material is greater than 430Mpa, while elongation percentage is greater than 8%.
Chinese patent literature CN 101319287B(application number 200810302670.3) disclose a kind of high-strength casting
Aluminum alloy materials, by weight percentage, the alloying component be Cu 2.0~6.0%, Mn 0.05%, Ti0.01~0.5%,
Cr 0.01~0.2%, Cd0.01~0.4%, Zr0.01~0.25%, B0.005~0.04%, rare earth element Pr0.05~
0.3%, remaining is Al and micro impurity element.
Alloy material disclosed in above-mentioned document lays particular emphasis on the composition proportion and its mechanical property parameters of Al-Cu alloy,
Contain toxic element Cd and some expensive metallic element such as V, Zr in alloy composition, influences safety, also improve
The costs of raw material.Furthermore be not directed in disclosed patent and the casting character parameter of the alloy, as alloy mobility,
Heat crack resistance etc., when practical application, are also difficult to solve the contradictory problems of alloy strength and castability in production.
Summary of the invention
Technical problem to be solved by the invention is to provide the Al-Cu system castings that a kind of high-strength and high ductility, heat crack resistance are excellent
Aluminium alloy and preparation method thereof is made, and mainly using the railway locomotive components of cast aluminium alloy gold preparation.
To realize that object above or other purposes, the present invention provide following technical scheme.
It is according to the invention in a first aspect, provide a kind of high-strength and high ductility Al-Cu system cast aluminium alloy gold, each component and its opposite
In the weight percent of the cast aluminium alloy gold gross weight are as follows: Cu 3%~5%, Mn 0.2%~0.8%, Ti 0.1%~0.4%, La+
Gd 0.05%~0.5%, Fe≤0.20%, impurity element≤0.50%, surplus are aluminium.
Second aspect according to the invention provides a kind of preparation method of above-mentioned high-strength and high ductility Al-Cu system cast aluminium alloy gold,
The following steps are included:
Raw material is melted, obtains aluminium alloy melt after refining；Aluminium alloy melt is poured into mold, it is cooling to obtain aluminium alloy casting
Part；Solution treatment is carried out to obtained aluminium alloy castings；Cooling treatment is carried out to the casting after solution treatment again；Finally to cooling
High strength high toughness casting aluminum alloy is obtained after casting progress ageing treatment that treated.
The third aspect according to the invention provides a kind of railway locomotive components, is cast using Al-Cu system as described above
Aluminium alloy is prepared；The railway locomotive components are high Fe in Al-alloy gear-box or its with same mechanical property requirements
His components.
The present invention has the effect of positive:
(1) joined in the chemical component of high-strength and high ductility Al-Cu system cast aluminium alloy gold of the invention micro rare-earth elements La and
Gd, alloy casting state metallographic structure figure show that both rare earth elements are distributed along dendrite and crystal boundary, form continuous or discontinuous
Nethike embrane improves the heat crack resistance of alloy so that intercrystalline crack be made to be not easy to extend.
(2) toxic Elements C d and Be, peace are free of in the chemical component of high-strength and high ductility Al-Cu system cast aluminium alloy gold of the invention
Good perfection；Also without precious metal elements such as V, Zr, cost is relatively low.
(3) alloy adds content to the present invention through reasonable settings, obtained high-strength and high ductility Al-Cu system cast aluminium alloy gold
Tensile strength degree >=380MPa, elongation >=6.5%, relative to the ZL201 of Al-Cu system, ZL203 alloy is obviously improved,
And the heat crack resistance of aluminium alloy has obtained apparent improvement.
(4) the content requirement ratio of high-strength and high ductility Al-Cu system's cast aluminium alloy gold of the invention to Fe therein and impurity element
Relatively loose, the upper limit of Fe can be to 0.20wt%, and the upper limit of impurity element can be to 0.50wt%, therefore the requirement to raw material and technique
It reduces, to be conducive to industrializing implementation and popularization.
(5) high-strength and high ductility Al-Cu system cast aluminium alloy gold high-intensity and high-tenacity of the invention, casting character are excellent, at low cost
It is honest and clean, it is suitable for manufacture high Fe in Al-alloy gear-box, to replace domestic currently used ZL101A alloy.
(6) when preparing high-strength and high ductility Al-Cu system's cast aluminium alloy gold, the Al-Gd intermediate alloy of addition is easier the present invention
It is completely melt in aluminium alloy；Due to the difference of atomic radius and electronegativity, relative to other rare earth elements, La is more advantageous to increasing
Interaction strength between strong Al and Cu, makes Al2Cu phase is easier to be precipitated in timeliness, to be conducive to improve the intensity of alloy.
Detailed description of the invention
Fig. 1 is the as-cast metallographic structure's figure (100 ×) for being not added with the alloy of La and Gd element in the prior art.
Fig. 2 is that the as-cast metallographic structure of the alloy prepared in the embodiment of the present invention 1 schemes (100 ×).
Fig. 3 is the alloy hot tearing stick prepared in the embodiment of the present invention 1.
Specific embodiment
What is be described below is some in multiple possible embodiments of the invention, it is desirable to provide to of the invention basic
Solution, it is no intended to confirm crucial or conclusive element of the invention or limit scope of the claimed.It is readily appreciated that, according to this
The technical solution of invention, in the case where not changing connotation of the invention, those of ordinary skill in the art can propose can be mutual
Other implementations of replacement.Therefore, following specific embodiments and attached drawing are only the examples to technical solution of the present invention
Property explanation, and be not to be construed as whole of the invention or be considered as to define or limit technical solution of the present invention.
The application the following technical schemes are provided:
Technical solution 1, a kind of high-strength and high ductility Al-Cu system cast aluminium alloy gold, each component and its total relative to the cast aluminium alloy gold
The weight percent of weight are as follows: Cu 3%~5%, Mn 0.2%~0.8%, Ti 0.1%~0.4%, La+Gd 0.05%~0.5%, Fe≤
0.20%, impurity element≤0.50%, surplus is aluminium.
Technical solution 2, high-strength and high ductility Al-Cu as described in technical solution 1 system cast aluminium alloy gold, wherein relative to described
Cast aluminium alloy gold gross weight, the weight percent of Cu are 3.5%~4.5%.
Technical solution 3, the high-strength and high ductility Al-Cu system cast aluminium alloy gold as described in any in technical solution 1 to 2, wherein phase
For the cast aluminium alloy gold gross weight, the weight percent of Mn is 0.4%~0.6%.
Technical solution 4, the high-strength and high ductility Al-Cu system cast aluminium alloy gold as described in any in technical solution 1 to 3, wherein phase
For the cast aluminium alloy gold gross weight, the weight percent of Ti is 0.2%~0.35%.
Technical solution 5, the high-strength and high ductility Al-Cu system cast aluminium alloy gold as described in any in technical solution 1 to 4, wherein phase
For the cast aluminium alloy gold gross weight, the weight percent of La+Gd is 0.1%~0.3%.
Technical solution 6, the high-strength and high ductility Al-Cu system cast aluminium alloy gold as described in any in technical solution 1 to 5, wherein La
Weight ratio with Gd is 1:1.8~2.5.
Technical solution 7, the high-strength and high ductility Al-Cu system cast aluminium alloy gold as described in any in technical solution 1 to 6, wherein
Tensile strength >=380MPa of Al-Cu system cast aluminium alloy gold, extensibility >=6.5%.
Technical solution 8, the preparation side of the high-strength and high ductility Al-Cu system cast aluminium alloy gold as described in any in technical solution 1 to 7
Method, comprising the following steps:
Raw material is melted, obtains aluminium alloy melt after refining；Aluminium alloy melt is poured into mold, it is cooling to obtain aluminium alloy casting
Part；Solution treatment is carried out to obtained aluminium alloy castings；Cooling treatment is carried out to the casting after solution treatment again；Finally to cooling
High strength high toughness casting aluminum alloy is obtained after casting progress ageing treatment that treated.
Technical solution 9, the preparation method of high-strength and high ductility Al-Cu as described in technical solution 8 system cast aluminium alloy gold, at solid solution
Reason is to keep the temperature 8~10 hours after the aluminium alloy castings that will be obtained are heated to 535 DEG C~545 DEG C.
Technical solution 10, the preparation of the high-strength and high ductility Al-Cu system cast aluminium alloy gold as described in any in technical solution 8 to 9
Method, cooling treatment are that the casting after solution treatment is quickly quenched to cool down in 20 DEG C~40 DEG C of water.
Technical solution 11, the preparation of the high-strength and high ductility Al-Cu system cast aluminium alloy gold as described in any in technical solution 8 to 10
Method, ageing treatment are that the casting after cooling treatment is heated to 150 DEG C~180 DEG C, in the heat preservation 9~11 hours, are then gone out
Furnace is air-cooled to room temperature.
Technical solution 12 is prepared using the Al-Cu system cast aluminium alloy gold as described in any one of technical solution 1 to 7；
The railway locomotive components are high Fe in Al-alloy gear-box or other components with same mechanical property requirements.
(embodiment 1)
The each component of the high-strength and high ductility Al-Cu system cast aluminium alloy gold of the present embodiment and its relative to the cast aluminium alloy gold gross weight
Weight percent are as follows: Cu 3%, Mn 0.2%, Ti 0.15%, rare-earth elements La+Gd 0.05%, Fe≤0.20%, impurity element≤
0.50%, surplus is aluminium；Wherein the weight ratio of rare-earth elements La and Gd are 1: 2.
The preparation method process of the high-strength and high ductility Al-Cu system cast aluminium alloy gold of the present embodiment is as follows: raw material being melted, refining
After obtain aluminium alloy melt；Aluminium alloy melt is poured into mold, cooling obtains aluminium alloy castings；Aluminium alloy casting to obtaining
Part carries out solution treatment；Cooling treatment is carried out to the casting after solution treatment again；When finally being carried out to the casting after cooling treatment
High strength high toughness casting aluminum alloy is obtained after effect processing.
Specifically, the following steps are included:
1. commercial-purity aluminium to be first heated to 700 DEG C~720 DEG C in resistance furnace, then according to the chemical component weight of aluminium alloy hundred
Divide than continuously adding Al-Cu intermediate alloy, Al-Mn intermediate alloy, Al-Ti intermediate alloy, the conjunction of the centre Al-La into resistance furnace
Gold, Al-Gd intermediate alloy, finish heat preservation and stir.
2. to step 1. in all additions intermediate alloy all melt after, so that material in resistance furnace is warming up to 740 DEG C
~750 DEG C, innocuous refining flux is then added into furnace, obtains aluminium alloy melt after refinery by de-gassing.
3. 2. aluminium alloy melt that step obtains is poured into a manner of gravitational casting at 700 DEG C~720 DEG C warmed-up
Into 180 DEG C~220 DEG C of molds, then natural cooling obtains aluminium alloy castings in air.
4. carrying out solution treatment to 3. aluminium alloy castings that step obtains, the solution treatment is the aluminium for 3. obtaining step
Alloy-steel casting keeps the temperature 8~10 hours after being heated to 535 DEG C~545 DEG C.
5. carrying out cooling treatment in 20 DEG C~40 DEG C of water that the casting after step 4. solution treatment is quickly quenched.
6. obtaining high strength high toughness casting aluminum alloy after carrying out ageing treatment to the casting after step 5. cooling treatment.
The ageing treatment is that the casting after step 5. cooling treatment is heated to 150 DEG C~180 DEG C, the heat preservation 9~
It 11 hours, then comes out of the stove and is air-cooled to room temperature.
See as-cast metallographic structure's figure (100 ×) that Fig. 1, Fig. 1 are the cast aluminium alloy gold for being not added with La and Gd, the aluminium alloy
Each component and its relative to the cast aluminium alloy gold gross weight weight percent be Cu 3.5%, Mn 0.2%, Ti 0.15%, Fe
0.18%, other impurities element≤0.50%, surplus Al.
See that Fig. 2, Fig. 2 are that the as-cast metallographic structure of cast aluminium alloy gold manufactured in the present embodiment schemes (100 ×), compared to Figure 1,
Fig. 2, which is shown on dendrite and crystal boundary, forms continuous or discontinuous nethike embrane, these nethike embranes make intercrystalline crack be not easy to extend, thus
Improve the heat crack resistance of alloy；And the Al that the alloy of the present embodiment is precipitated2Cu phase amount is more, and crystal grain obviously refines,
Improve the mechanical property of alloy.
The mechanical property of cast aluminium alloy gold made from the present embodiment is tested, wherein
Tensile strength Rm (MPa), elongation percentage by GB/T 228-2002 " metal material tensile testing at ambient temperature " standard into
Row detection.
Test result is as follows: tensile strength 380MPa, elongation percentage 6.5%.
See that Fig. 3, Fig. 3 are the alloy hot tearing stick prepared using the cast aluminium alloy gold of the present embodiment, is evaluated using hot tearing stick method
The hot cracking tendency of alloy, the hot cracking tendency factor being calculated are 4.
(embodiment 2 to embodiment 12)
Embodiment 2 to embodiment 12 high-strength and high ductility Al-Cu system cast aluminium alloy gold each component and its relative to the casting aluminium
The weight percent of alloy gross weight such as the following table 1, inevitably impurity content is lower than 0.50% in the alloy of each embodiment:
1 chemical component of table (wt%)
Note: " La:Gd " refers to rare-earth elements La and the weight ratio of Gd in table.
Above embodiments 2 to embodiment 12 cast aluminium alloy gold preparation method and 1 aluminium alloy of embodiment preparation method
It is identical.
Mechanical property and hot cracking tendency to the cast aluminium alloy gold of embodiment 2 to embodiment 12 according to embodiment 1 side
Method is tested, and test result see the table below 2.
2 mechanical property of table and the hot cracking tendency factor
Table 2 shows that alloy adds content, obtained high-strength and high ductility Al-Cu system cast aluminium alloy gold to the present invention through reasonable settings
ZL201 relative to Al-Cu system of tensile strength and elongation, ZL203 alloy is obviously improved, and aluminium alloy is anti-
Hot tearing performance has obtained apparent improvement, therefore alloy of the invention had not only had high-strength and high ductility performance, but also had excellent heat resistanceheat resistant
Fragility energy.And above-mentioned mechanical property parameters show that alloy of the invention is suitable for manufacture high Fe in Al-alloy gear-box.
Claims (12)
1. a kind of high-strength and high ductility Al-Cu system cast aluminium alloy gold, which is characterized in that each component and its relative to the cast aluminium alloy gold
The weight percent of gross weight are as follows: Cu 3%~5%, Mn 0.2%~0.8%, Ti 0.1%~0.4%, La+Gd 0.05%~0.5%, Fe
≤ 0.20%, impurity element≤0.50%, surplus is aluminium.
2. high-strength and high ductility Al-Cu according to claim 1 system cast aluminium alloy gold, it is characterised in that: relative to the casting
Aluminium alloy gross weight, the weight percent of Cu are 3.5%~4.5%.
3. high-strength and high ductility Al-Cu according to claim 1 system cast aluminium alloy gold, it is characterised in that: relative to the casting
Aluminium alloy gross weight, the weight percent of Mn are 0.4%~0.6%.
4. high-strength and high ductility Al-Cu according to claim 1 system cast aluminium alloy gold, it is characterised in that: relative to the casting
Aluminium alloy gross weight, the weight percent of Ti are 0.2%~0.35%.
5. high-strength and high ductility Al-Cu according to claim 1 system cast aluminium alloy gold, it is characterised in that: relative to the casting
Aluminium alloy gross weight, the weight percent of La+Gd are 0.1%~0.3%.
6. high-strength and high ductility Al-Cu according to claim 5 system cast aluminium alloy gold, it is characterised in that: the weight ratio of La and Gd
For 1:1.8~2.5.
7. high-strength and high ductility Al-Cu according to one of claims 1 to 6, system cast aluminium alloy gold, it is characterised in that: Al-Cu system
Tensile strength >=380MPa of cast aluminium alloy gold, extensibility >=6.5%.
8. a kind of preparation method of high-strength and high ductility Al-Cu as described in claim 1 system cast aluminium alloy gold, it is characterised in that including
Following steps:
Raw material is melted, obtains aluminium alloy melt after refining；Aluminium alloy melt is poured into mold, it is cooling to obtain aluminium alloy casting
Part；
Solution treatment is carried out to obtained aluminium alloy castings；Cooling treatment is carried out to the casting after solution treatment again；Finally to cold
But high strength high toughness casting aluminum alloy is obtained after casting progress ageing treatment that treated.
9. the preparation method of high-strength and high ductility Al-Cu according to claim 8 system cast aluminium alloy gold, it is characterised in that:
When solution treatment, 8~10 hours are kept the temperature after aluminium alloy castings are heated to 535 DEG C~545 DEG C.
10. the preparation method of high-strength and high ductility Al-Cu according to claim 8 system cast aluminium alloy gold, it is characterised in that:
When cooling treatment, cooled down in 20 DEG C~40 DEG C of water that the casting after solution treatment is quickly quenched.
11. the preparation method of high-strength and high ductility Al-Cu according to claim 8 system cast aluminium alloy gold, it is characterised in that:
When ageing treatment, the casting after cooling treatment is heated to 150 DEG C~180 DEG C, in the heat preservation 9~11 hours, is then gone out
Furnace is air-cooled to room temperature.
12. a kind of railway locomotive components, it is characterised in that: use Al-Cu system as described in claim 1 cast aluminium alloy gold system
It is standby to form；The railway locomotive components are high Fe in Al-alloy gear-box or other zero with same mechanical property requirements
Part.
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| CN113528876A (en) * | 2021-07-05 | 2021-10-22 | 东南大学 | Method for improving room temperature and high temperature strength of heat-resistant aluminum alloy through Gd microalloying |
| CN115927934A (en) * | 2022-07-01 | 2023-04-07 | 湖北汽车工业学院 | Al-Cu casting alloy with {001} < x10> texture and preparation method and application thereof |
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| CN113528876A (en) * | 2021-07-05 | 2021-10-22 | 东南大学 | Method for improving room temperature and high temperature strength of heat-resistant aluminum alloy through Gd microalloying |
| CN115927934A (en) * | 2022-07-01 | 2023-04-07 | 湖北汽车工业学院 | Al-Cu casting alloy with {001} < x10> texture and preparation method and application thereof |
| CN115927934B (en) * | 2022-07-01 | 2024-01-26 | 湖北汽车工业学院 | Al-Cu casting alloy with {001} < x10> texture and preparation method and application thereof |
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