CN108642332A - A kind of high-performance beryllium alumin(i)um alloy and preparation method thereof - Google Patents
A kind of high-performance beryllium alumin(i)um alloy and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of high-performance beryllium alumin(i)um alloys and preparation method thereof, belong to aluminum alloy materials and field of metallurgy, solve the problems, such as that beryllium alumin(i)um alloy corrosion resistance is poor；Ingredient including limiting mass percent：Be, Ni, Mg, Ag, Si, Sr, Zr, Cr, Sc, SiC, graphene, remaining is Al and inevitable impurity；By the way that the metal melting of the above element will be contained, and the silicon carbide after ball milling, graphene and aluminium powder is added, after mixing by skimming, refining, go bad, degassing processing, finally cast obtain ingot casting；Ingot casting is handled by Homogenization Treatments and artificial aging again；Present invention significantly reduces the density of beryllium alumin(i)um alloy and mechanical properties, while the effective intensity and corrosion resistance for enhancing beryllium alumin(i)um alloy matrix, high-performance beryllium alumin(i)um alloy of the present invention can be applied to electronic package material.
Description
Technical field
The invention belongs to aluminum alloy materials and field of metallurgy, more particularly to a kind of high specific strength, highly corrosion resistant aluminizing
Alloy and preparation method thereof.
Background technology
Beryllium alumin(i)um alloy has light weight, specific strength is high, specific stiffness is high, thermal stability is good, high tenacity, the excellent spy such as anticorrosive
Property.And many good characteristics such as the low-density of beryllium and the workability of aluminium are combined, a kind of more and more important conjunction is become
Golden material is widely used in fields such as aerospace, computer and automobiles.Although beryllium alumin(i)um alloy has many performances,
And industrial use is extensive, but the difficulty of preparation technology of beryllium alumin(i)um alloy is larger at present, the preparation method of beryllium alumin(i)um alloy has powder smelting
Gold, powder isostatic cool pressing+pressure processing and precision casting technology, the mechanical property of the obtained beryllium alumin(i)um alloy of first two method compared with
It is good, but production cost is higher, is unfavorable for industrialized production, and the production cost of the latter is low, but due to the fusing point phase of aluminium and beryllium
The larger therefore traditional casting method of difference can cause the serious segregation of beryllium alumin(i)um alloy, coarse grains and microstructure non-uniform
Disadvantage, it is poor so as to cause beryllium alumin(i)um alloy mechanical property obtained, it is difficult to meet industrial requirement.It therefore can be by introducing Ni
System, Ag systems and Si series elements make the above problem be improved.
Graphene since it is with unique structure, by one layer or several layers of carbon atoms it is tightly packed at honeycomb-like network knot
Structure, therefore such as with many excellent properties：Intensity, conductive and heat-conductive, translucency and excellent corrosion resistance, since be found with
Come, just receive the extensive concern of researcher, the performance of composite material can be improved as reinforcement.And it is many due to SiC
Characteristic is such as：High-modulus, high intensity and high thermal conductivity, so SiC is also widely used as the reinforcement of metal-base composites.Cause
This can further improve the comprehensive mechanical property by beryllium alumin(i)um alloy made from casting method by introducing graphene and SiC
And corrosion resistance.
Through the literature search of existing technologies, patent 201710500696.8 discloses a kind of heat of beryllium alumin(i)um alloy etc.
Static pressure liquid-phase sintering preparation method, by the way that beryllium powder and aluminium powder are mixed by design component ratio, in a mold isostatic cool pressing, adding
Hot isostatic pressing liquid-phase sintering is carried out in hot stove.The wettability of liquid aluminium and solid-state beryllium in liquid-phase sintering preparation process is improved,
Interface bond strength is improved, the mechanical property of beryllium alumin(i)um alloy is improved.
Patent CN201510390214 discloses a kind of beryllium alumin(i)um alloy plank and preparation method thereof, using near liquidus electromagnetism
Casting prepares beryllium alumin(i)um alloy ingot casting, then carries out solid-state hot pressing preform and the method for precision rolling prepares beryllium alumin(i)um alloy plank.
Tiny, uniform non-dendritic structure and As-cast Microstructure are advantageously formed, the mechanical properties such as plastic deformation resistance are improved.
Patent CN201510171665 discloses a kind of high-performance beryllium alumin(i)um alloy and preparation method thereof, makes as follows
It is standby：Casting is obtained aluminizing master alloy, beryllium alumin(i)um alloy powder is made of vacuum atomizing equipment, sieved in vacuum induction melting furnace
Powder is fitted into mold, isostatic cool pressing, soldering and sealing, hot isostatic pressing and removes jacket after degassing process in low-carbon steel capsule.Pass through
The good mechanical properties such as tensile strength, yield strength, elasticity modulus, the elongation percentage of beryllium alumin(i)um alloy prepared by this method.
The mechanical property of the above patent although beryllium alumin(i)um alloy obtained is better, but corrosion resistance is poor.
Invention content
To be solved by this invention is the poor problem of current beryllium alumin(i)um alloy corrosion resistance, and purpose provides a kind of high-strength
The beryllium alumin(i)um alloy and preparation method thereof of degree, highly corrosion resistant.The present invention is by being added graphene and SiC, to the strong of beryllium alumin(i)um alloy
Degree and corrosion resistance all improve there are one more significant, and are conducive to industrialization promotion.
To achieve the above object, the technical solution adopted in the present invention is：
A kind of high-performance beryllium alumin(i)um alloy, includes the ingredient of following mass percent：Be：30-45%, Ni：3-4.5%, Mg：3-
4.5%, Ag：0.1-1.5%, Si：0.1-3.5%, Sr：0.05-0.2%, Zr：0.05-0.3%, Cr：0.05-0.2%, Sc：
0.05-0.3%, SiC：0.9-3.6%, graphene：0.1-0.4%, remaining is Al and inevitable impurity.
A kind of preparation method of high-performance beryllium alumin(i)um alloy, includes the following steps：
a）According to following weight percent：Be：30-45%, Ni：3-4.5%, Mg：3-4.5%, Ag：0.1-1.5%, Si：
0.1-3.5%, Sr：0.05-0.2%, Zr：0.05-0.3%, Cr：0.05-0.2%, Sc：0.05-0.3%, SiC：0.9-3.6%,
Graphene：0.1-0.4%, surplus are Al and inevitable impurity, weigh the metal material containing the above ingredient and its content.
b）All metals weighed, which are put into high temperature melting furnace, makes its melting.
c）Silicon carbide, graphene and aluminium powder are put into ball mill and carry out ball milling, and the powder after ball milling is added to molten
In the molten metal melted, it is sufficiently stirred；The mass ratio of the aluminium powder, silicon carbide and graphene is 65-70:8-9:1；The gold
It is 10-15 to belong to the ratio between the total weight of material and the total weight of silicon carbide, graphene and aluminium powder:1.
d）It after stirring, skimmed, refined successively, being gone bad, degassing processing, finally cast obtains ingot casting.
e）It will be forged into slab after ingot casting preheating and carry out Homogenization Treatments later；The Homogenization Treatments are that three-level is uniform
Change is handled：12-36h is kept the temperature at 340-400 DEG C and completes first stage Homogenization Treatments, then keeps the temperature 6- at 400-450 DEG C
Second stage Homogenization Treatments are completed for 24 hours, and 6--24h is finally kept the temperature at 450--500 DEG C completes phase III Homogenization Treatments.
f）Multistage hot deformation deformation is carried out, the temperature of the hot rolling deformation is 430-500 DEG C.
g）Obtained hot rolling deformation ingot casting is subjected to hip treatment；Treatment process parameter is 530-590 DEG C, 110-
140Mpa, time 1-3h.
h）Then solid solution and artificial aging processing are carried out.
Preferably, the smelting temperature in the high temperature melting furnace is 730-790 DEG C.
Preferably, the ball milling parameter is：Ratio of grinding media to material is 5-7:1, rotating speed 300-400r/min, Ball-milling Time 3-
5h。
Preferably, the mass ratio of the aluminium powder, silicon carbide and graphene is 70:9:1.
Preferably, the powder after the ball milling blows powder machine by nitrogen and is blown into molten metal liquid, air pressure 0.2-
0.4Mpa。
Preferably, described skim, refine, it is rotten be that deslagging agent, refining agent, alterant is added to be handled respectively, institute
The deslagging agent stated, refining agent, alterant weight be 0.2-0.3%, 0.3-0.4%, 0.05-0.1% of raw metal respectively.
Preferably, the degassing processing is that nitrogen is passed through into aluminum metal liquid, air pressure 0.2-0.4Mpa.
Preferably, the solution treatment is：1-2h is kept the temperature at being 450-520 DEG C in temperature, then water cooling at room temperature；
Artificial aging is handled：5-10h is kept the temperature at 60-120 DEG C, then keeps the temperature 12-48h at 130-200 DEG C.
A kind of application of high-performance beryllium alumin(i)um alloy in electronic package material.
The present invention makes the density of entire alloy reduce by increasing the content of beryllium, and the intensity that SiC improves alloy, stone is added
Black alkene so that intensity, corrosion resistance, electrical and thermal conductivity and the other overall performances of aluminium alloy are all improved.
The density reduction that the addition of Be enables aluminum alloy to, Mg and Cr improve the intensity of aluminium alloy, and wherein Mg is also improved simultaneously
Its corrosion resistance, Ni, Si, Ag eliminate the casting flaws such as shrinkage porosite, shrinkage cavity, segregation of casting, improve the casting character of aluminium alloy
And mechanical property, the addition of Sr improve the ductility of aluminium alloy, the addition of Zr can form disperse phase, improve the fracture of alloy
The addition of drag, rare earth Sc improves the intensity and corrosion resistance of aluminium alloy, and recrystallization, refinement can be inhibited brilliant
Grain.
Compared with prior art the invention has the advantages that：The present invention significantly reduces beryllium by the addition of beryllium
The density of aluminium alloy, the addition of SiC significantly improve the mechanical property of beryllium alumin(i)um alloy, and the addition of graphene effectively enhances beryllium
The intensity and corrosion resistance of alloy matrix aluminum, and handled using three-level Homogenization Treatments and twin-stage artificial aging in technique, it can
Effectively to support and protect chip as a kind of electronic package material, from the corrosion of steam, chemical atmosphere etc. in air, and
Be conducive to industrialized popularization, also have popularization and reference value in other aluminium alloy industries, such as ship, automobile neighborhood.
Specific implementation mode
With reference to the embodiment technical solution that the present invention will be described in detail, but protection domain is not limited by this.
Embodiment 1
1）Stock：The metal material containing following component and its content is first weighed according to weight：Be：40%, Ni：4%, Mg4%,
Ag：0.5%, Si：2%, Sr：0.15%, Zr：0.15%, Cr：0.15%, Sc：0.2%, surplus be Al and inevitably it is miscellaneous
Matter.
2）Above-mentioned metal material is put into high temperature melting furnace and is heated, its melting, smelting temperature is made to be 750 DEG C and examine stove
The content of interior each ingredient constantly adjusts, to reach the content range of each element.
3）Silicon carbide, graphene and aluminium powder are put into ball mill and carry out ball milling, by the mixed-powder nitrogen after ball milling
It blows the mode that powder machine is blown into be added in the aluminum water of melting, air pressure 0.2Mpa；And be sufficiently stirred, so that mixed-powder is mixed in stove
It closes uniform.Wherein ball milling parameter is：Ratio of grinding media to material is 5:1, rotating speed 300r/min, Ball-milling Time 3h.Aluminium powder:Silicon carbide:Stone
The mass ratio of black alkene is 70: 9:1.
4）Deslagging agent is added, then skims；Refining agent is added, is refined；Alterant is added, carries out Metamorphism treatment,
Then sufficient standing 30min.
5）Above-mentioned aluminum metal liquid is passed through nitrogen, it is 0.2Mpa to carry out degassing processing and air pressure.
6）Above-mentioned molten metal is obtained into ingot casting using investment precision casting technology.
7）Carry out three-level Homogenization Treatments:15h is kept the temperature at 360 DEG C and completes first stage Homogenization Treatments, then 410
8h is kept the temperature at DEG C and completes second stage Homogenization Treatments, and 12h is finally kept the temperature at 450 DEG C completes phase III Homogenization Treatments.
8）After ingot casting preheating, hot rolling or hot extrusion at 450 DEG C.
9）Ingot casting obtained above is put into hot isostatic press and carries out hip treatment, hip treatment technique ginseng
Number is 550 DEG C, 120Mpa, time 1h.
10）Ingot casting obtained above is subjected to solution treatment：1h is kept the temperature at being 480 DEG C in temperature, then water at room temperature
It is cold.Artificial aging is handled：5h is kept the temperature at 100 DEG C, then keeps the temperature 18h at 150 DEG C.
The mass percentage content of finally obtained high-performance beryllium alumin(i)um alloy is：Be：32%, Ni：3.4%, Mg：3.1%,
Ag：0.45%, Si：1.9%, Sr：0.12%, Zr：0.11%, Cr：0.13%, Sc：0.09%, SiC：1.2%, graphene：
0.2%, remaining is Al and inevitable impurity.
Embodiment 2
1）Stock：The aluminium ingot containing following component and its content is first weighed according to weight：Be：50%, Ni：3.5%, Mg4.5%,
Ag：0.1%, Si：4.5%, Sr：0.25%, Zr：0.1%, Cr：0.25%, Sc：0.35%, surplus be Al and inevitably it is miscellaneous
Matter.
2）Above-mentioned aluminium ingot is put into high temperature melting furnace and is heated, its melting, smelting temperature is made to be 780 DEG C and examine each in stove
The content of a ingredient constantly adjusts, to reach the content range of each element.
3）Silicon carbide, graphene and aluminium powder are put into ball mill and carry out ball milling, by the mixed-powder nitrogen after ball milling
It blows the mode that powder machine is blown into be added in the aluminum water of melting, air pressure 0.3Mpa；And be sufficiently stirred, so that mixed-powder is mixed in stove
It closes uniform.Wherein ball milling parameter is：Ratio of grinding media to material is 5:1, rotating speed 350r/min, Ball-milling Time 4h.Aluminium powder:Silicon carbide:Stone
The mass ratio of black alkene is 65:8:1.
4）Deslagging agent is added, then skims；Refining agent is added, is refined；Alterant is added, carries out rotten place
It manages, then sufficient standing 30min.
5）Above-mentioned aluminum metal liquid is passed through nitrogen, it is 0.3Mpa to carry out degassing processing and air pressure.
6）Above-mentioned molten metal is obtained into ingot casting using investment precision casting technology.
7）Carry out three-level Homogenization Treatments：15h is kept the temperature at 380 DEG C and completes first stage Homogenization Treatments, then 430
8h is kept the temperature at DEG C and completes second stage Homogenization Treatments, and 12h is finally kept the temperature at 480 DEG C completes phase III Homogenization Treatments.
8）After ingot casting preheating, hot rolling or hot extrusion at 470 DEG C.
9）Ingot casting obtained above is put into hot isostatic press and carries out hip treatment, hip treatment technique ginseng
Number is 560 DEG C, 120Mpa, time 2h.
10）Ingot casting obtained above is subjected to solution treatment：1h is kept the temperature at being 480 DEG C in temperature, then water at room temperature
It is cold.Artificial aging is handled：8h is kept the temperature at 110 DEG C, is then kept the temperature for 24 hours at 170 DEG C.
The mass percentage content of finally obtained high-performance beryllium alumin(i)um alloy is：Be：45%, Ni：3.5%, Mg：4.3%,
Ag：0.1%, Si：3.9%, Sr：0.2%, Zr：0.08%, Cr：0.2%, Sc：0.3%, SiC：3.5%, graphene：0.35%,
Remaining is Al and inevitable impurity.
Embodiment 3
1）Stock：The aluminium ingot containing following component and its content is first weighed according to weight：Be：35%, Ni：5%, Mg5%, Ag：
2%, Si：0.2%, Sr：0.1%, Zr：0.35%, Cr：0.1%, Sc：0.1%, surplus is Al and inevitable impurity.
2）Above-mentioned aluminium ingot is put into high temperature melting furnace and is heated, its melting, smelting temperature is made to be 780 DEG C and examine each in stove
The content of a ingredient constantly adjusts, to reach the content range of each element.
3）Silicon carbide, graphene and aluminium powder are put into ball mill and carry out ball milling, by the mixed-powder nitrogen after ball milling
It blows the mode that powder machine is blown into be added in the aluminum water of melting, air pressure 0.3Mpa；And be sufficiently stirred, so that mixed-powder is mixed in stove
It closes uniform.Wherein ball milling parameter is：Ratio of grinding media to material is 5:1, rotating speed 350r/min, Ball-milling Time 4h.Aluminium powder:Silicon carbide:Stone
The mass ratio of black alkene is 68:9:1.
4）Deslagging agent is added, then skims；Refining agent is added, is refined；Alterant is added, carries out rotten place
It manages, then sufficient standing 30min.
5）Above-mentioned aluminum metal liquid is passed through nitrogen, it is 0.3Mpa to carry out degassing processing and air pressure.
6）Above-mentioned molten metal is obtained into ingot casting using investment precision casting technology.
7）Carry out three-level Homogenization Treatments：15h is kept the temperature at 380 DEG C and completes first stage Homogenization Treatments, then 430
8h is kept the temperature at DEG C and completes second stage Homogenization Treatments, and 12h is finally kept the temperature at 480 DEG C completes phase III Homogenization Treatments.
8）After ingot casting preheating, hot rolling or hot extrusion at 470 DEG C.
9）Ingot casting obtained above is put into hot isostatic press and carries out hip treatment, hip treatment technique ginseng
Number is 560 DEG C, 120Mpa, time 2h.
10）Ingot casting obtained above is subjected to solution treatment：1h is kept the temperature at being 480 DEG C in temperature, then water at room temperature
It is cold.Artificial aging is handled：8h is kept the temperature at 110 DEG C, is then kept the temperature for 24 hours at 170 DEG C.
The mass percentage content of finally obtained high-performance beryllium alumin(i)um alloy is：Be：33%, Ni：4.5%, Mg：
4.5%, Ag：1.5%, Si：0.12%, Sr：0.07%, Zr：0.3%, Cr：0.1%, Sc：0.1%, SiC：2.6%, graphene：
0.4%, remaining is Al and inevitable impurity.
The above content is combine specific preferred embodiment to the further description done of the present invention, and it cannot be said that
The specific implementation mode of the present invention is only limitted to this, for those of ordinary skill in the art to which the present invention belongs, is not taking off
Under the premise of from the present invention, several simple deduction or replace can also be made, all shall be regarded as belonging to the present invention by being submitted
Claims determine scope of patent protection.
Claims (9)
1. a kind of high-performance beryllium alumin(i)um alloy, which is characterized in that include the ingredient of following mass percent：Be：30-45%, Ni：3-
4.5%, Mg：3-4.5%, Ag：0.1-1.5%, Si：0.1-3.5%, Sr：0.05-0.2%, Zr：0.05-0.3%, Cr：
0.05-0.2%, Sc：0.05-0.3%, SiC：0.9-3.6%, graphene：0.1-0.4%, remaining for Al and inevitably it is miscellaneous
Matter.
2. a kind of preparation method of high-performance beryllium alumin(i)um alloy as described in claim 1, which is characterized in that include the following steps：
a）According to following weight percent：Be：35-50%, Ni：3.5-5%, Mg：3.5-5%, Ag：0.1-2%, Si：0.2-
4.5%, Sr：0.1-0.25%, Zr：0.1-0.35%, Cr：0.1-0.25%, Sc：0.1-0.35%, surplus are Al and can not keep away
The impurity exempted from weighs the metal material containing the above ingredient and its content；
b）All metals weighed, which are put into high temperature melting furnace, makes its melting；
c）Silicon carbide, graphene and aluminium powder are put into ball mill and carry out ball milling, and the powder after ball milling is added to melting
In molten metal, it is sufficiently stirred；The mass ratio of the aluminium powder, silicon carbide and graphene is 65-70:8-9:1；The metal material
The ratio between the total weight of material and the total weight of silicon carbide, graphene and aluminium powder are 10-15:1；
d）It after stirring, skimmed, refined successively, being gone bad, degassing processing, finally cast obtains ingot casting；
e）It will be forged into slab after ingot casting preheating and carry out Homogenization Treatments later；The Homogenization Treatments are at three-level homogenization
Reason：12-36h is kept the temperature at 340-400 DEG C and completes first stage Homogenization Treatments, and it is complete that 6-24h is then kept the temperature at 400-450 DEG C
At second stage Homogenization Treatments, 6--24h is finally kept the temperature at 450--500 DEG C and completes phase III Homogenization Treatments；
f）Multistage hot deformation deformation is carried out, the temperature of the hot rolling deformation is 430-500 DEG C；
g）Obtained hot rolling deformation ingot casting is subjected to hip treatment；Treatment process parameter is 530-590 DEG C, 110-
140Mpa, time 1-3h；
h）Then solid solution and artificial aging processing are carried out.
3. a kind of preparation method of high-performance beryllium alumin(i)um alloy according to claim 2, which is characterized in that the high temperature melting
Smelting temperature in furnace is 730-790 DEG C.
4. a kind of preparation method of high-performance beryllium alumin(i)um alloy according to claim 2, which is characterized in that the ball milling ginseng
Number is：Ratio of grinding media to material is 5-7:1, rotating speed 300-400r/min, Ball-milling Time 3-5h.
5. a kind of preparation method of high-performance beryllium alumin(i)um alloy according to claim 2, which is characterized in that the aluminium powder,
The mass ratio of silicon carbide and graphene is 70:9:1.
6. a kind of preparation method of high-performance beryllium alumin(i)um alloy according to claim 2, which is characterized in that after the ball milling
Powder powder machine blown by nitrogen be blown into molten metal liquid, air pressure 0.2-0.4Mpa.
7. a kind of preparation method of high-performance beryllium alumin(i)um alloy according to claim 2, which is characterized in that it is described skim,
Refining, it is rotten be deslagging agent, refining agent, alterant is added to be handled respectively, the deslagging agent, refining agent, alterant
Weight is 0.2-0.3%, 0.3-0.4%, 0.05-0.1% of raw metal respectively.
8. a kind of preparation method of high-performance beryllium alumin(i)um alloy according to claim 2, which is characterized in that at the degasification
Reason is that nitrogen is passed through into aluminum metal liquid, air pressure 0.2-0.4Mpa.
9. a kind of preparation method of high-performance beryllium alumin(i)um alloy according to claim 2, which is characterized in that at the solid solution
Reason is：1-2h is kept the temperature at being 450-520 DEG C in temperature, then water cooling at room temperature；Artificial aging is handled：It is protected at 60-120 DEG C
Then warm 5-10h keeps the temperature 12-48h at 130-200 DEG C.
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| CN109207804A (en) * | 2018-11-23 | 2019-01-15 | 湘潭金波新材料科技有限公司 | The preparation method of high-performance aluminium alloy |
| CN111074121A (en) * | 2019-12-31 | 2020-04-28 | 广东宏锦新材料科技有限公司 | Aluminum alloy and preparation method thereof |
| CN112921258A (en) * | 2021-01-15 | 2021-06-08 | 中国工程物理研究院材料研究所 | Heat treatment process for improving strength and plasticity of cast beryllium-aluminum-scandium-zirconium alloy |
| CN113649574A (en) * | 2021-08-15 | 2021-11-16 | 中南大学 | Method for improving dimensional stability of high-purity beryllium material for precision instruments and meters |
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| CN109207804B (en) * | 2018-11-23 | 2021-04-13 | 湘潭金波新材料科技有限公司 | Preparation method of high-performance aluminum alloy |
| CN111074121A (en) * | 2019-12-31 | 2020-04-28 | 广东宏锦新材料科技有限公司 | Aluminum alloy and preparation method thereof |
| CN112921258A (en) * | 2021-01-15 | 2021-06-08 | 中国工程物理研究院材料研究所 | Heat treatment process for improving strength and plasticity of cast beryllium-aluminum-scandium-zirconium alloy |
| CN113649574A (en) * | 2021-08-15 | 2021-11-16 | 中南大学 | Method for improving dimensional stability of high-purity beryllium material for precision instruments and meters |
| CN113649574B (en) * | 2021-08-15 | 2022-07-15 | 中南大学 | Method for improving dimensional stability of high-purity beryllium material for precision instruments and meters |
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