CN106435292A - High-strength high-silicon aluminum alloy containing trace rare earth and preparation method thereof and application - Google Patents
High-strength high-silicon aluminum alloy containing trace rare earth and preparation method thereof and application Download PDFInfo
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- CN106435292A CN106435292A CN201610643990.XA CN201610643990A CN106435292A CN 106435292 A CN106435292 A CN 106435292A CN 201610643990 A CN201610643990 A CN 201610643990A CN 106435292 A CN106435292 A CN 106435292A
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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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F3/15—Hot isostatic pressing
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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
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each 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
- C22F1/002—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
- C22F1/043—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 silicon as the next major constituent
Abstract
The invention relates to a high-strength high-silicon aluminum alloy containing trace rare earth and a preparation method thereof and an application, and belongs to the technical field of functional materials. The alloy involved in the invention is prepared from, by mass percent, 48.0-52.0% of silicon, 0.1-0.9% of rare earth X, and the rest of aluminum, wherein X is Sc or Zr. According to the invention, a billet is prepared by using an ultrasound atomizing spraying sedimentation method, and then the deposited billet is compacted and thermally treated, the obtained silicon aluminum alloy tissue is uniform and free from hole; the compaction degree is 99.9% above, the silicon grain is round and fine, and its size is less than 10 miu m. The composite material designed in the invention has outstanding physical performance, low manufacturing cost, and is applicable to the large-scale industrial production.
Description
Technical field
The present invention relates to a kind of high-strength silumin containing trace rare-earth and its preparation method and application, belong to function
Developing material technical field.
Technical background
In recent years, with the raising of the complexity of electronic devices and components, intensive and integrated level, the power of chip is increasingly
Greatly, cooling requirements also more and more higher, traditional encapsulating housing material, such as Invaor and Kovar alloy, tungsten copper, molybdenum copper etc. are
The demand that electronics technology develops rapidly cannot be adapted to.Silico-aluminum has as electronic package material of new generation that density is low, thermal conductivity
Rate is high, thermal coefficient of expansion is low, mechanical property and machinability excellent the features such as, Electronic Packaging field obtain actual should
With.
One of function that electronic package material must is fulfilled for first be can protect within electronic devices and components, be allowed to resist
Hostile environment, can bear the effect of some shock and vibrations, friction and pressure, play excellent support simultaneously while meeting radiating
In connecting circuit, external circuit etc. requires.Therefore, the intensity improving silico-aluminum seems very necessary.There are some researches show, rare earth unit
The addition of element is larger to the performance impact of silico-aluminum, and its reason has following three points：One is the purification of rare earth.Silico-aluminum
A large amount of gases, mainly hydrogen can be brought in fusion process, and rare earth is larger with hydrogen affinity, can adsorb and dissolved hydrogen,
Form stable compound, bubble will not be gathered into, meanwhile, the deoxidizing capacity of rare earth element is stronger, can be by Al2O3In Al also
Former out, reduce oxide inclusion content, thus reducing the generation of hole, it also easily with alusil alloy in sulfur produce
RES、RE2S3、RE2O2S sulfides, easily with the low-melting-point metal element compounds such as phosphorus, antimony, arsenic, generate REP, RESn, REAs
Deng compound, these rare earth compounds have the characteristics that density is little, fusing point is high, can float sediment in fusion process, will not pollute
Melt.Two is the refining effect to primary silicon for the rare earth.Rare earth is a kind of more more excellent than microcosmic salt or phosphor bronze alloy change
Matter agent, suppresses silicon phase to grow up by making the big constitutional supercooling in silicon phase forward position, improves the roundness of silicon phase, rare earth and aluminum are formed uniformly
Tiny second phase particles, increased the particle number of forming core, are conducive to the refinement of primary silicon.Three is that rare earth is strong to aluminum substrate
Change acts on.In general, in the case that consistency is certain, the intensity one side of silico-aluminum depends on the size of silicon phase, shape
Looks and distribution, on the other hand depend on the intensity of aluminum substrate, and a rare earth part for interpolation is solid-solubilized in aluminum substrate, play solid solution strong
Change acts on, and part Dispersed precipitate in the form of precipitated phase, in aluminum substrate, plays the effect of precipitation strength, largely improves
The intensity of aluminum substrate.Therefore, adding rare earth in silico-aluminum makes composite be strengthened to seem very necessary.
Add the document that rare earth element serves as alterant to record in silico-aluminum more, but its preparation method is to pass mostly
The melting and casting of system, and silicone content, mostly below 30%, is mainly used in high-abrasive material, such as Zhang Weiwen etc. exists《Rare earth is excessively common
Alloying action in brilliant silumin》It is middle that to prepare silicone content using conventional casting methods be 22% containing rare earth La, Ce, rare earth
The interpolation of element is primarily to substitute expensive Ni in alloy；Bell et al. exists《Tissue signature containing rare-earth and high content of silicon aluminium alloy》
Middle prepare the sial casting alloy containing rare earth La, Ce that silicone content is 20%, the purpose that its rare earth adds and Zhang Weiwen etc. are similar.
It is known that the silico-aluminum component segregation of as cast condition is serious, silicon is mutually thick, easily produces hole, and combination property is less than fast rapid hardening
The silico-aluminum of solid method preparation, seldom uses as electronic package material.The profits such as the Nadimpalli Raghukiran of India
With jet deposition legal system silicone content 13～22% silico-aluminum, its Sc content is 0.8%, and the consistency of alloy is 93.9%
～97.32%.At present, worldwide, the difficult problem that the preparation of silumin more than 48% for the silicone content is well recognized as.
Content of the invention
The present invention is directed to the deficiencies in the prior art, provides a kind of high-strength silumin containing trace rare-earth and its preparation
Methods and applications.
A kind of high-strength silumin containing trace rare-earth of the present invention；Include following components by percentage to the quality：
Silicon 48.0～52.0%, it is preferably 49.0～52.0%, more preferably 50.0%；
X 0.1～0.9%, be preferably 0.4～0.6%；
Remaining is aluminum；
Described X is selected from least one in Sc, Zr.
A kind of high-strength silumin containing trace rare-earth of the present invention；Described X is made up of Sc, Zr.As further
Preferred version, described X is by Sc, Zr Sc in mass ratio：Zr=1：1.5-2.5 composition, preferably Sc in mass ratio：Zr=1：2 groups
Become.
A kind of preparation method of the high-strength silumin containing trace rare-earth of the present invention；Comprise the steps：
Join by design component and take silicon source, silicon source, X source, to joining the silicon source taking, silicon source, X source carry out melting and obtain melt；Institute
Obtain melt and obtain deposit preform through spray atomization and deposition, deposit preform, through hip treatment, obtains sample；Described hip treatment
When, control temperature to be 530 DEG C～610 DEG C, control pressure is 140～210MPa.
Preferably, described silicon source is monocrystal silicon.Source of aluminium is rafifinal, and the purity of described rafifinal is more than etc.
In 99.995%.Described X source is Al-Sc alloy and/or Al-Zr alloy.In Al-Sc alloy, Sc content is 2%, Al-Zr alloy
Middle Zr content is 10%.
As further preferred version, in described Al-Sc alloy, the weight/mass percentage composition of Sc is 1-5, is preferably 2%.
In described aluminum Al-Zr alloy, the weight/mass percentage composition of Zr is 8-15%, is preferably 10%.
Preferably：When silicon source be monocrystal silicon, when silicon source be rafifinal, when X source be described X source be Al-Sc alloy
And/or during Al-Zr alloy, its preparation process is：
First rafifinal is warming up to 800～870 DEG C, is warming up to 1200～1400 DEG C after fine aluminium all melts, Ran Houfen
Batch adds monocrystal silicon, treats that monocrystal silicon all melts and is cooled to 750～820 DEG C, adds X source, with making after stirring 5～10min
Slag agent covers slag making and uses hexachlorethane degasification；Obtain melt；Gained melt moves into tundish；Side using spray atomization and deposition
Formula prepares deposit preform；Described slag former by NaCl, KCl, cryolite by mass percentage, NaCl：KCl：Cryolite=30:
47:23 compositions；During spray atomization and deposition, control gas pressure is 0.9～1.3MPa, and atomization temperature is 780～850 DEG C, deposition
The acceptance distance of disk is 620～650mm, and nebulizer rate of scanning is 21～24HZ, and the decrease speed of sediment pan is 19～25mm/
min；Described gas is nitrogen；The temperature of described tundish is 900～1000 DEG C, is preferably 955～965 DEG C.
Preferably：During hip treatment, the control dwell time is 1～3h.
A kind of preparation method of the high-strength silumin containing trace rare-earth of the present invention；Prepared sample is placed in resistance
With the ramp of 5～25 DEG C/min to 500～525 DEG C in stove, it is incubated 2～8h, oil quenching, oil temperature is 80～120 DEG C, then by oil
Sample after quenching is again placed in resistance furnace with the ramp of 5～25 DEG C/min to 150～220 DEG C, is incubated 24h～72h, takes
Go out air cooling；Obtain finished product.
A kind of preparation method of the high-strength silumin containing trace rare-earth of the present invention；The thermal conductivity of prepared finished product is
142～150W/ (m K), thermal coefficient of expansion is 11.1 × 10-6～11.3 × 10-6K-1, mechanical property project, tensile strength is
308～345MPa, bending strength is 392～430MPa, and hardness is 170～192HB.
A kind of preparation method of the high-strength silumin containing trace rare-earth of the present invention；The grain of silicon grain in prepared finished product
Footpath is less than or equal to 10 μm, and prepared finished product consistency is more than or equal to 99.9%.
A kind of application of the high-strength silumin containing trace rare-earth of the present invention；Including being used as Electronic Packaging material
Material.
The present invention adds trace rare-earth element Sc or Zr in silumin, rationally controls ultrasonic atomizatio spray deposition
Parameter, and select suitable densification and heat treatment mode, obtain high comprehensive performance, the exsertile high sial of mechanical property closes
Gold.
High sial prepared by the present invention is closed composite, after processing through following processing modes, shows excellent welding
Performance；
Step one
Silumin is placed in stove, is incubated prior to 390～450 DEG C, is cooled to 120～180 DEG C with stove, open fire door empty
Cold；Then it is being warming up to 320～390 DEG C, insulation, then blow-on door air cooling, obtain silumin to be processed；
Step 2
Silumin to be processed will be processed by design size, obtain just material to be welded；
Step 3
Just material to be welded is placed in stove, is incubated prior to 390～450 DEG C, is cooled to 120～180 DEG C with stove, open fire door empty
Cold；Then it is being warming up to 320～390 DEG C, insulation, then blow-on door air cooling, obtain relay part to be welded.
Relay part to be welded is obtained welding body through laser welding；The tensile strength of described welding body welding position >=
220MPa, crackle produces probability and is less than or equal to 2%.
The present invention has the prominent advantages that：
1. the silumin even tissue prepared by, silicon grain below 10 μm, consistency more than 99.9%, hot thing
Reason function admirable, thermal conductivity is 142～150W/ (m K), and thermal coefficient of expansion is 11.1 × 10-6～11.3 × 10-6K-1, mechanics
Performance projects, and tensile strength is 308～345MPa, and bending strength is 392～430MPa, and hardness is 170～192HB, and identical
Method preparation compared with silicone content silico-aluminum, intensity improve more than 35%.
2. being added with beneficial to absorbed portion hydrogen in fusion process of rare earth Sc and Zr, reduces the machine that pore produces
Rate, the deoxidization desulfuration of both elements is very capable simultaneously, has certain purification to melt.
3. rare earth Sc and Zr strengthening one major reason of silico-aluminum are exactly that it has refining effect to primary silicon, heavy
During long-pending, Sc and Zr causes the big constitutional supercooling in silicon phase forward position, and ultrasonic aerosol rate of cooling is very fast, and silicon phase has little time to grow
Greatly, the Al that it separates out3Sc and Al3Zr particle increased nucleation rate, makes silicon mutually mellow and full tiny, and size only has 10 μm about.
4. rare earth element addition is few, and only 0.1～0.9%, the thermophysical property of material is affected little, micro- after heat treatment
The spherical in a large number Al that amount Sc and Zr is formed with aluminum substrate3Sc and Al3Zr particle is distributed in aluminum substrate crystal grain or in crystal boundary, can
Consumingly pinning lives Grain and sub-grain boundary, is conducive to improving the intensity of aluminum substrate.
Brief description
Fig. 1 is the interior tissue photo of finished product prepared by embodiment 1.
Fig. 2 be finished product prepared by embodiment 1 after weld formation, photo figure at weld bond.
From figure 1 it appears that the silumin even tissue of preparation is fine and close, no gross segregation, Si grain diameter exists
Less than 10 μm, the smooth no obvious corner angle of particle surface.
As can be seen from Figure 2 embodiment 1 gained weld seam, does not have cracking phenomenon.
Specific embodiment
Embodiment 1：
Preparation Al-50Si-0.4Sc silico-aluminum.
1) raw material be monocrystal silicon, rafifinal (99.998～99.999%Al), Sc content be 2% Al-Sc alloy, each close
Gold element is in following ratio dispensing：Silicon：50%, scandium：0.4%, balance of aluminum.
2) high-purity aluminium ingot is warming up to 850 DEG C, after aluminium ingot all melts, is warming up to 1300 DEG C, add monocrystalline in batches
Silicon, treats that monocrystal silicon all melts and is cooled to 760 DEG C, add Al-Sc intermediate alloy, be sufficiently stirred for 5min, use 30%NaCl+47%
KCl+23% cryolite covers slag making, and uses hexachlorethane degasification, stands 10min, it is 950 DEG C that melt is poured into preheating temperature
In tundish, open high pressure nitrogen, atomizing pressure is 1.2MPa, and the acceptance distance of sediment pan is 630mm, obtains a diameter of simultaneously
350mm, the deposition billet highly for 560mm.
3) densification.Deposition billet is placed in high temperature insostatic pressing (HIP) stove, temperature is 540 DEG C, pressure is 180MPa, the dwell time
For 2h.
4) heat treatment, by the alloy pig cutting in bulk after densification, a size of 85mm × 85mm × 10mm, by block high silicon
Aluminium alloy is placed in chamber type electric resistance furnace with the ramp of 20 DEG C/min to 515 DEG C, is incubated 4h, oil quenching, oil temperature is 90 DEG C, then will
Bulk alloy is placed in chamber type electric resistance furnace with the ramp of 20 DEG C/min to 180 DEG C, is incubated 24h, takes out air cooling.
After testing, the Al-50Si-0.4Sc silico-aluminum of preparation thermophysical property after densification and heat treatment is excellent, heat
Conductance is 150W/ (m K), and thermal coefficient of expansion is 11.3 × 10-6K-1, tensile strength is 313MPa, and bending strength is 409MPa,
Hardness is 181HB, and strengthening effect is obvious.
The soldering technique of above-mentioned gained Al-50Si-0.4Sc silico-aluminum is：
Step one
The high aluminium silicon composite material that gained is added copper is placed in stove, is incubated prior to 420 DEG C, is cooled to 120 DEG C with stove,
Open fire door air cooling；Then it is being warming up to 390 DEG C, insulation, then blow-on door air cooling, obtain silumin to be processed；
Step 2
Silumin to be processed will be processed by design size, obtain just material to be welded；
Step 3
Just material to be welded is placed in stove, is incubated prior to 420 DEG C, is cooled to 120 DEG C with stove, opens fire door air cooling；Then exist
It is warming up to 390 DEG C, insulation, then blow-on door air cooling, obtain relay part to be welded.
Relay part to be welded is obtained welding body through laser welding；The tensile strength of described welding body welding position >=
220MPa, crackle produces probability and is less than or equal to 2%.
Embodiment 2：
Preparation Al-50Si-0.4Zr silico-aluminum.
1) raw material be monocrystal silicon, rafifinal (99.998～99.999%Al), Zr content be 10% Al-Zr alloy, respectively
Alloying element is in following ratio dispensing：Silicon：50%, zirconium：0.4%, balance of aluminum.
2) high-purity aluminium ingot is warming up to 850 DEG C, after aluminium ingot all melts, is warming up to 1300 DEG C, add monocrystalline in batches
Silicon, treats that monocrystal silicon all melts and is cooled to 760 DEG C, add Al-Zr intermediate alloy, be sufficiently stirred for 5min, use 30%NaCl+47%
KCl+23% cryolite covers slag making, and uses hexachlorethane degasification, stands 10min, it is 950 DEG C that melt is poured into preheating temperature
In tundish, open high pressure nitrogen, atomizing pressure is 1.2MPa, and the acceptance distance of sediment pan is 630mm, obtains a diameter of simultaneously
350mm, the deposition billet highly for 560mm.
3) densification.Deposition billet is placed in high temperature insostatic pressing (HIP) stove, temperature is 540 DEG C, pressure is 180MPa, the dwell time
For 2h.
4) heat treatment, by the alloy pig cutting in bulk after densification, a size of 85mm × 85mm × 10mm, by block high silicon
Aluminium alloy is placed in chamber type electric resistance furnace with the ramp of 20 DEG C/min to 515 DEG C, is incubated 4h, oil quenching, oil temperature is 90 DEG C, then will
Bulk alloy is placed in chamber type electric resistance furnace with the ramp of 20 DEG C/min to 180 DEG C, is incubated 24h, takes out air cooling.
After testing, the Al-50Si-0.4Zr silico-aluminum of preparation thermophysical property after densification and heat treatment is excellent, heat
Conductance is 148W/ (m K), and thermal coefficient of expansion is 11.3 × 10-6K-1, tensile strength is 308MPa, and bending strength is 392MPa,
Hardness is 170HB, and strengthening effect is obvious.
Embodiment 3：
Preparation Al-50Si-0.2Sc-0.4Zr silico-aluminum.
1) raw material be monocrystal silicon, rafifinal (99.998～99.999%Al), Sc content be 2% Al-Sc alloy, Zr contains
Measure the Al-Zr alloy for 10%, each alloying element is in following ratio dispensing：Silicon：50%, scandium：0.2%, zirconium：0.4%, balance of
Aluminum.
2) high-purity aluminium ingot is warming up to 850 DEG C, after aluminium ingot all melts, is warming up to 1300 DEG C, add monocrystalline in batches
Silicon, treats that monocrystal silicon all melts and is cooled to 760 DEG C, be simultaneously introduced Al-Sc intermediate alloy and Al-Zr intermediate alloy, be sufficiently stirred for
5min, covers slag making with 30%NaCl+47%KCl+23% cryolite, and uses hexachlorethane degasification, stands 10min, by melt
Pour in the tundish that preheating temperature is 950 DEG C, open high pressure nitrogen simultaneously, atomizing pressure is 1.2MPa, the acceptance of sediment pan
Distance is 630mm, obtains a diameter of 350mm, the deposition billet highly for 560mm.
3) densification.Deposition billet is placed in high temperature insostatic pressing (HIP) stove, temperature is 540 DEG C, pressure is 180MPa, the dwell time
For 2h.
4) heat treatment, by the alloy pig cutting in bulk after densification, a size of 85mm × 85mm × 10mm, by block high silicon
Aluminium alloy is placed in chamber type electric resistance furnace with the ramp of 20 DEG C/min to 515 DEG C, is incubated 4h, oil quenching, oil temperature is 90 DEG C, then will
Bulk alloy is placed in chamber type electric resistance furnace with the ramp of 20 DEG C/min to 180 DEG C, is incubated 24h, takes out air cooling.
After testing, the Al-50Si-0.2Sc-0.4Zr silico-aluminum of preparation thermophysical property after densification and heat treatment
Excellent, thermal conductivity is 146W/ (m K), and thermal coefficient of expansion is 11.2 × 10-6K-1, tensile strength is 332MPa, and bending strength is
429MPa, hardness is 186HB, and strengthening effect is obvious.
Embodiment 4：
Preparation Al-50Si-0.4Sc-0.2Zr silico-aluminum.
1) raw material be monocrystal silicon, rafifinal (99.998～99.999%Al), Sc content be 2% Al-Sc alloy, Zr contains
Measure the Al-Zr alloy for 10%, each alloying element is in following ratio dispensing：Silicon：50%, scandium：0.4%, zirconium：0.2%, balance of
Aluminum.
2) high-purity aluminium ingot is warming up to 850 DEG C, after aluminium ingot all melts, is warming up to 1300 DEG C, add monocrystalline in batches
Silicon, treats that monocrystal silicon all melts and is cooled to 760 DEG C, be simultaneously introduced Al-Sc intermediate alloy and Al-Zr intermediate alloy, be sufficiently stirred for
5min, covers slag making with 30%NaCl+47%KCl+23% cryolite, and uses hexachlorethane degasification, stands 10min, by melt
Pour in the tundish that preheating temperature is 950 DEG C, open high pressure nitrogen simultaneously, atomizing pressure is 1.2MPa, the acceptance of sediment pan
Distance is 630mm, obtains a diameter of 350mm, the deposition billet highly for 560mm.
3) densification.Deposition billet is placed in high temperature insostatic pressing (HIP) stove, temperature is 540 DEG C, pressure is 180MPa, the dwell time
For 2h.
4) heat treatment, by the alloy pig cutting in bulk after densification, a size of 85mm × 85mm × 10mm, by block high silicon
Aluminium alloy is placed in chamber type electric resistance furnace with the ramp of 20 DEG C/min to 515 DEG C, is incubated 4h, oil quenching, oil temperature is 90 DEG C, then will
Bulk alloy is placed in chamber type electric resistance furnace with the ramp of 20 DEG C/min to 180 DEG C, is incubated 24h, takes out air cooling.
After testing, the Al-50Si-0.4Sc-0.2Zr silico-aluminum of preparation thermophysical property after densification and heat treatment
Excellent, thermal conductivity is 142W/ (m K), and thermal coefficient of expansion is 11.1 × 10-6K-1, tensile strength is 345MPa, and bending strength is
430MPa, hardness is 192HB, and strengthening effect is obvious.
Claims (10)
1. a kind of high-strength silumin containing trace rare-earth；It is characterized in that, include following components by percentage to the quality：
Silicon 48.0～52.0%；
X 0.1～0.9%；
Remaining is aluminum；
Described X is selected from least one in Sc, Zr.
2. a kind of high-strength silumin containing trace rare-earth according to claim 1；It is characterized in that, with quality hundred
Divide and include following components than meter：
Silicon 49.0～52.0%；
X 0.4～0.6%；
Remaining is aluminum；
Described X is selected from least one in Sc, Zr.
3. a kind of high-strength silumin containing trace rare-earth according to claim 2；It is characterized in that, with quality hundred
Divide and include following components than meter：
Silicon 50.0%；
X 0.4～0.6%；
Remaining is aluminum；
Described X is selected from least one in Sc, Zr.
4. a kind of high-strength silumin containing trace rare-earth according to claim 1；It is characterized in that：Described X by
Sc, Zr Sc in mass ratio：Zr=1：1.5-2.5 composition.
5. a kind of method preparing the high-strength silumin containing trace rare-earth；It is characterized in that, comprise the steps：
Join by design component and take silicon source, silicon source, X source, to joining the silicon source taking, silicon source, X source carry out melting and obtain melt；Gained melts
Body obtains deposit preform through spray atomization and deposition, and deposit preform, through hip treatment, obtains sample；During described hip treatment,
Temperature is controlled to be 530 DEG C～610 DEG C, control pressure is 140～210MPa.
6. the preparation method of a kind of high-strength silumin containing trace rare-earth according to claim 5；Its feature exists
In：Described silicon source is monocrystal silicon；Source of aluminium is rafifinal, and the purity of described rafifinal is more than or equal to 99.995%；Described X source
For Al-Sc alloy and/or Al-Zr alloy.
7. the preparation method of a kind of high-strength silumin containing trace rare-earth according to claim 5；Its feature exists
In：When silicon source be monocrystal silicon, when silicon source be rafifinal, when X source be described X source be Al-Sc alloy and/or during Al-Zr alloy, its
Preparation process is：
First rafifinal is warming up to 800～870 DEG C, is warming up to 1200～1400 DEG C after fine aluminium all melts, then in batches
Add monocrystal silicon, treat that monocrystal silicon all melts and be cooled to 750～820 DEG C, add X source, after stirring 5～10min, use slag former
Cover slag making and use hexachlorethane degasification；Obtain melt；Gained melt moves into tundish；System by the way of spray atomization and deposition
Standby deposit preform；Described slag former by NaCl, KCl, cryolite by mass percentage, NaCl：KCl：Cryolite=30:47:23
Composition；During spray atomization and deposition, control gas pressure is 0.9～1.3MPa, and atomization temperature is 780～850 DEG C, the connecing of sediment pan
It is 620～650mm by distance, nebulizer rate of scanning is 21～24HZ, the decrease speed of sediment pan is 19～25mm/min；Institute
Stating gas is nitrogen；The temperature of described tundish is 900～1000 DEG C, is preferably 955～965 DEG C.
8. the preparation method of a kind of high-strength silumin containing trace rare-earth according to claim 5；Its feature exists
In：Prepared sample is placed in resistance furnace with the ramp of 5～25 DEG C/min to 500～525 DEG C, is incubated 2～8h, oil
Quench, oil temperature is 80～120 DEG C, then the sample after oil quenching is again placed in resistance furnace with the ramp of 5～25 DEG C/min extremely
150～220 DEG C, it is incubated 24h～72h, take out air cooling；Obtain finished product.
9. the preparation method of a kind of high-strength silumin containing trace rare-earth according to claim 9；Its feature exists
In：The thermal conductivity of prepared finished product is 142～150W/ (m K), and thermal coefficient of expansion is 11.1 × 10-6～11.3 × 10-6K-1,
Tensile strength is 308～345MPa, and bending strength is 392～430MPa, and hardness is 170～192HB；
In prepared finished product, the particle diameter of silicon grain is less than or equal to 10 μm,
Prepared finished product consistency is more than or equal to 99.9%.
10. the application of the high-strength silumin containing trace rare-earth as described in a kind of any one as claim 1-4；Its feature
It is：Including being used as electronic package material.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947893A (en) * | 2017-04-14 | 2017-07-14 | 黄平县阳光科技发展有限公司 | A kind of electronic package shell and preparation method thereof |
| CN107058818A (en) * | 2017-04-14 | 2017-08-18 | 黄平县阳光科技发展有限公司 | A kind of Electronic Packaging silico-aluminum and preparation method thereof |
| CN107574348A (en) * | 2017-09-13 | 2018-01-12 | 泸溪县群祥新材料有限责任公司 | A kind of method that rapid solidification method prepares silumin |
| CN109047783A (en) * | 2018-08-15 | 2018-12-21 | 长沙新材料产业研究院有限公司 | A kind of Al alloy powder and preparation method thereof |
| CN109576541A (en) * | 2019-02-01 | 2019-04-05 | 中南大学 | A kind of silico-aluminum of combined microalloying and preparation method thereof |
| CN112746200A (en) * | 2020-12-29 | 2021-05-04 | 中南大学 | Dispersion strengthening high-silicon aluminum alloy and preparation method thereof |
| CN113104851A (en) * | 2021-03-08 | 2021-07-13 | 北京诺飞新能源科技有限责任公司 | High-silicon aluminum alloy and production process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1345983A (en) * | 2000-09-27 | 2002-04-24 | 北京科技大学 | Method for spraying and depositing high silicon aluminium alloy |
| CN1531072A (en) * | 2003-03-14 | 2004-09-22 | 北京有色金属研究总院 | High-thermal conductivity silicon-aluminium alloy sealing material with low-density and expansion coefficient, preparing method thereof |
-
2016
- 2016-08-08 CN CN201610643990.XA patent/CN106435292B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1345983A (en) * | 2000-09-27 | 2002-04-24 | 北京科技大学 | Method for spraying and depositing high silicon aluminium alloy |
| CN1531072A (en) * | 2003-03-14 | 2004-09-22 | 北京有色金属研究总院 | High-thermal conductivity silicon-aluminium alloy sealing material with low-density and expansion coefficient, preparing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 邹泽昌等: "稀土在铝合金中的作用及研究进展", 《机电技术》 * |
| 魏作山等: "Sc、Zr联合作用对Al-Si合金组织和性能的影响", 《特种铸造及有色合金》 * |
Cited By (8)
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| CN106947893A (en) * | 2017-04-14 | 2017-07-14 | 黄平县阳光科技发展有限公司 | A kind of electronic package shell and preparation method thereof |
| CN107058818A (en) * | 2017-04-14 | 2017-08-18 | 黄平县阳光科技发展有限公司 | A kind of Electronic Packaging silico-aluminum and preparation method thereof |
| CN107574348A (en) * | 2017-09-13 | 2018-01-12 | 泸溪县群祥新材料有限责任公司 | A kind of method that rapid solidification method prepares silumin |
| CN109047783A (en) * | 2018-08-15 | 2018-12-21 | 长沙新材料产业研究院有限公司 | A kind of Al alloy powder and preparation method thereof |
| CN109047783B (en) * | 2018-08-15 | 2021-10-01 | 长沙新材料产业研究院有限公司 | Aluminum alloy powder and preparation method thereof |
| CN109576541A (en) * | 2019-02-01 | 2019-04-05 | 中南大学 | A kind of silico-aluminum of combined microalloying and preparation method thereof |
| CN112746200A (en) * | 2020-12-29 | 2021-05-04 | 中南大学 | Dispersion strengthening high-silicon aluminum alloy and preparation method thereof |
| CN113104851A (en) * | 2021-03-08 | 2021-07-13 | 北京诺飞新能源科技有限责任公司 | High-silicon aluminum alloy and production process thereof |
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Denomination of invention: High-strength high-silicon aluminum alloy containing trace rare earth and preparation method thereof and application Effective date of registration: 20200529 Granted publication date: 20180525 Pledgee: Jinzhou Branch of Hunan Ningxiang Rural Commercial Bank Co.,Ltd. Pledgor: Changsha Braun Sida metal material Co.,Ltd. Registration number: Y2020980002619 |