CN107119203A - A kind of method for preparing Yb, La and SiC composite inoculating A356.2 alloys - Google Patents
A kind of method for preparing Yb, La and SiC composite inoculating A356.2 alloys Download PDFInfo
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Abstract
The invention discloses a kind of method for preparing Yb, La and SiC composite inoculating A356.2 alloys, comprise the following steps：Using nano level SiC as reinforced particulate, after superhigh temperature oxidation processes, then using nano magnetic sputtering equipment, by the SiC particulate surface of high pure metal Ti parcels after the oxidising treat-ment；And gone bad using high-purity compound heavy rare earth and continuous ultrasound assisted melting, further to improve castability.The support that the present invention uses independent research can cause SiC particulate just to be poured into a mould in suspended state for auxiliary equipment.This preparation method is simple, cost is relatively low, with short production cycle, possesses good industrialization prospect.
Description
Technical field
The present invention relates to the melting field of alloy, and in particular to one kind prepares Yb, La and SiC composite inoculating A356.2 alloys
Method.
Background technology
A356.2 aluminium alloys are typical Al-Si-Mg systems ternary alloy three-partalloys, are compared with A356.0, A356.1, and Fe content is entered
One step is reduced, and adds metal Ti, has preferably refined crystal grain.A356.2 aluminium alloys can cast shape matching complexity
Thin-walled parts, because its casting character is outstanding, plasticity is high, so applied to above automotive hub.
Do not add and thick plate tip-like primary silicon is included in the A356.2 alloys of alterant, its matrix.Crystal grain is thicker
Greatly, distribution is more uneven, and the performance of material is more bad.At present, production industry is devoted to improve traditional A356.2 alloy properties
Can, main method is exactly, from source, to improve thick particle, make its distribution uniformity and mellow and fullization, rotten using which kind of
Agent, how to carry out rotten A356.2 alloys be also domestic and international research and development it is common the problem of.
19th century Al-Si aluminium alloys it is found that rare earth element can go bad, and rare earth element can long-time burning
Without reducing its thinning effect.Rare earth can also carry out degasification, slagging-off.Also there is improvement to the Hydrogen Brittleness Phenomena for reducing A356, still,
Most of research is only limitted to individually add LREE at present, for heavy rare earth element, especially mixes high-purity heavy rare earth ytterbium
Research with lanthanum is limited.
SiC-Al composites as structural material to be commonly applied on lifting airscrew, brake disc etc., still, due to
The special nature of carborundum so that prepare SiC-Al composites extremely difficult.The method that most people all uses powder metallurgy
Prepared, but the method complex production process, sintering process is difficult to control, be difficult to prepare the larger structural member of volume, and it is raw
The production cycle is longer.
CN106011507 A disclose a kind of Al-Mg-Si-Y rare earth aluminium alloys and preparation method thereof, during this method is added
Between be stirred every 5 minutes after alloy, although can sufficiently stir, but be due to it is stirred in frequent, easily
Cause to enter gas in melt.And prepare rare earth intermediate alloy and increase the production cycle, also easily cause the secondary oxygen of rare earth element
Change.CN 100516261C disclose a kind of method for the A356 alloy stostes that gone bad with cerium-rich mischmetal, enter in fusion process
Capable magnetic agitation twice, this way easily causes gas to enter aluminium alloy solution, and adds after rare earth alterative, carries out magnetic force and stirs
Mix, cause rare earth and oxygen fully to contact, scaling loss is serious, reduce modification effect.CN 103451494A disclose a kind of aluminium
- silicon-ytterbium cast aluminium alloy gold and preparation method.This method uses electromagnetic agitation, but the operating temperature of electromagnetic agitation is up to 840
DEG C, the serious scaling loss of rare earth and soaking time is too short, RE Modified has certain incubation period, and the time is too short, it is impossible to well
Play rare-earth action.The A of CN 104178649 disclose a kind of preparation method of high-performance lanthanum ytterbium aluminium alloy, the method casting
The alloy produced is not heat-treated and ultrasonic time is too short, and ultrasound has not been able to pour into a mould immediately after finishing, and reduces the effect of ultrasound.
The content of the invention
To solve the above problems, the present invention provides a kind of method for preparing Yb, La and SiC composite inoculating A356.2 alloys,
This method Environmental Safety, crystal grain refinement, castability is good, and reduces the production cycle.
What the present invention was achieved through the following technical solutions：
A kind of method for preparing Yb, La and SiC composite inoculating A356.2 alloys, comprises the following steps：
1）The pretreatment of carborundum：
（1）5.25g average grain diameter 5nm-90nm carborundum is weighed, 20ML alcohol, ultrasonic disperse 30 minutes is added；
（2）The carborundum that ultrasound is finished is put into air dry oven, and 70 DEG C carry out drying 2h；
（3）Drying is finished, and it is 2h to be put into milling time in grinding alms bowl；
（4）SiC puts silica crucible into, is heated to 300 DEG C of ± 5 DEG C of insulation 30min, then be warming up to 1200 DEG C of ± 5 DEG C of insulation 5h, phase
Between every 30min stirring, the time is 40s；
（5）Particle of the SiC rejectings more than 100nm after finishing will be pre-processed；
2）SiC subsequent treatment：Magnetron sputtering is carried out after the pretreatment of carborundum；
3）Fusion process
（1）Resistance furnace in ultrasonic wave crucible heater is heated to 500 DEG C ~ 550 DEG C, purity is added into graphite crucible is
99.9% aluminium ingot；
（2）730 DEG C are warming up to, aluminium ingot all thawings is treated, adds Al-20%Si intermediate alloys；
（3）Al-20%Si is waited to melt completely, the purity of addition aluminium foil tight is 99.99% Yb+La, wherein aluminium foil
It is 3 with Yb+La mass ratioes:1,5min is incubated, coverture is added, 40min-55min is incubated；
（4）Skim, be sufficiently stirred for after the completion of skimming with graphite rod for the first time after insulation, continue to be incubated 15min；
（5）Added while stirring with graphite rod and have been warmed up 40 DEG C of SiC, the position that SiC is added is the whirlpool for stirring semisolid
SiC is all added within center, stirring 2min；
（6）Ultrasound is carried out when being warming up to 730 DEG C, the time is 30min；
（7）The Mg of aluminium foil tight is added, the wherein mass ratio of aluminium foil and Mg is 3:1 and coverture is added immediately, be incubated
5min；
（8）Al-5%Ti-1%C are added, Slag treatment is taken off for the second time, is poured into a mould after stirring at 720 DEG C, during cast
Filtered with resistant to elevated temperatures chemical fibre fine-structure mesh；
（9）It is heat-treated after cast, obtains Yb, La and SiC composite inoculating A356.2 alloys.
The mass percent of the component of Yb, La and SiC composite inoculating A356.2 alloys described above is：Si：6.5%-
7.5%, Mg：0.30%-0.45%, Ti：0.05%-0.1%, Yb：0.3%-0.5%, La：0.3%-0.5%, nano SiC：0.5%-
1.0%, Fe≤0.2%, Cu≤0.2%, Zn≤0.1% ,≤0.05%, surplus is Al to remaining impurity element.
Preferably, the step of SiC subsequent treatment is：
（1）After average grain diameter 5nm-90nm silicon carbide substrate is placed in cavity, 30min first is vacuumized with mechanical pump, then
Drive molecular pump to continue to vacuumize 15min, be evacuated to 1.3 × 10-3~4.0×10-3Pa vacuum, is passed through high-purity argon gas；
（2）Substrate heating mechanism is opened, substrate 120 DEG C are heated to, this process can be synchronous with molecular pump vacuum；
（3）It is 0.5 ~ 1.1Pa to adjust vacuum room pressure, and sputtering current 0.25A, sputtering time is 30s-300s.
Preferably, step in the fusion process（6）Middle ultrasonic working frequency 20KHz, operating temperature is 720 DEG C, is shaken
Width >=10 μm.
Preferably, step in the fusion process（9）Middle process of thermal treatment is：535 DEG C of ± 3 DEG C of solid solution 5h；During transfer
Between 3s, the cool time be 30s ± 3s；Aging temp is 165 DEG C ± 3 DEG C, and aging time is 4h.
Described above prepares the ultrasonic wave crucible heating used in nano SiC, the method for Yb, La enhancing A356.2 alloys
Device, including supersonic generator（1）, resistance furnace for placing graphite crucible（5）And support frame（3）, the ultrasonic wave generation
Device（1）It is connected with ultrasonic amplitude transformer（4）；
Support frame as described above（3）Including fixed cover（31）, N number of first support bar（32）Second support bar is vertically arranged with N number of（33）,
The fixed cover（31）It is sleeved on supersonic generator（1）On, N number of first support bar（32）With fixed cover（31）It is equal for axle
Even distribution；
The first support bar（32）One end be both connected to fixed cover（31）The upper, other end is and second support bar（33）It is upper
End connects to realize to supersonic generator（1）Supporting role；
The N is the natural number more than or equal to 2.
Preferably, the first support bar（32）For telescopic rod.
Preferably, second support bar（33）For telescopic rod.
Preferably, the first support bar（32）And second support bar（33）It is aluminum alloy material, the ultrasonic amplitude of fluctuation
Bar（4）For two type ultrasonic transformers of full titanium alloy material, the N is 3.
The useful achievement of the present invention：
1st, the present invention provides a kind of method for preparing Yb, La and SiC composite inoculating A356.2 alloys, when refine for the first time
The protective layer of coverture is not destroyed, it is to avoid Yb and La further oxidation.
2nd, using high-purity Yb and La, the step of solving manufacture rare earth intermediate alloy reduces the production cycle；Add Yb, La
During with Mg, nontoxic coverture is added immediately after using aluminium foil tight, and addition, Yb, La and Mg is reduced suddenly by height
Warm and serious scaling loss.
3. the present invention use purity for 99.99% Ti metals, with magnetically controlled sputter method by the attached last layer of silicon carbide
Ti films, the method can be with crystal grain thinning and Ti can increase the wetability of nano level SiC and aluminum solutions.
4. because of Ti easily scaling loss, therefore being splashed on the later SiC of high-temperature process, the effect of wetting is added.
5th, quenching shift time is 3s, reduces scattering and disappearing for temperature；, will be miscellaneous in order to obtain the effect of more preferable crystal grain thinning
Matter Ti and B is added in rational allowed band, and nucleation sites are provided for the heterogeneous forming core of solution.
When the 6th, carrying out Semi-solid Stirring, SiC position is added in the whirlpool of semisolid, preferably adds Sic into molten
In liquid.
7th, the direction of ultrasonic wave is perpendicular to crucible, it is to avoid the crucible impurity caused due to lateral wave enters melt,
The service life of crucible is added, melt has been purified, and ultrasound is carried out using continuous mode, has preferably broken dendrite, has been shape
Core provides place.
9th, the optional equipment that the experiment is used is independent research, and its feature is to add high strength alumin ium alloy telescopic rod
It is used as support, it is to avoid stove size and crucible size and the use for limiting ultrasonic device, protective gas can also be passed through and carry out melting
Oxidizable metal.
9th, the design can quickly withdraw ultrasonic device so that the time interval controls that ultrasound is finished between cast exist
Within 10s, carborundum has not enough time to reunite and has just been poured, and improves casting quality.
10th, ultrasonic transformer used in ultrasonic device is entirely that titanium alloy is made, titanium alloy chemical property is stable, it is to avoid remaining is miscellaneous
The introducing of matter.
11st, fining agent is served as using SiC-Yb-La, preferably go bad A356.2 aluminium alloys.
Brief description of the drawings
Fig. 1：The metallograph of embodiment 1 through Overheating Treatment；
Fig. 2：The metallograph of embodiment 2 through Overheating Treatment；
Fig. 3：The metallograph of embodiment 3 through Overheating Treatment；
Fig. 4：Yb+La+SiC metallograph is not added with through Overheating Treatment；
Fig. 5：Yb+La metallograph is added through Overheating Treatment；
Fig. 6：The ultrasonic wave crucible heater stereogram that this experiment is used；
Fig. 7：The ultrasonic wave crucible heater front view that this experiment is used；
Fig. 8：The ultrasonic wave crucible heater top view that this experiment is used；
In figure：1. ultrasonic generator；2. graphite crucible；3. support frame；4. ultrasound becomes secondary bar；5. resistance furnace；31. fixed cover；32.
First support bar；33. second support bar.
Embodiment
Essence for a better understanding of the present invention, enters to advance below by specific embodiment to technical scheme
The elaboration of one step.
Embodiment 1
A kind of method for preparing Yb, La and SiC composite inoculating A356.2 alloys, comprises the following steps：
1）The pretreatment of carborundum：
（1）5.25g average grain diameter 5nm-90nm carborundum is weighed, 20ML alcohol, ultrasonic disperse 30 minutes is added；
（2）The carborundum that ultrasound is finished is put into air dry oven, and 70 DEG C carry out drying 2h；
（3）Drying is finished, and it is 2h to be put into milling time in grinding alms bowl；
（4）SiC puts silica crucible into, be heated to 300 DEG C insulation 30min, then be warming up to 1200 DEG C insulation 5h, during which every
30min is stirred, and the time is 40s；
（5）Particle of the SiC rejectings more than 100nm after finishing will be pre-processed；
2）SiC subsequent treatment
（1）The slide of magnetron sputtering is placed in the beaker for filling acetone, 20min is cleaned in ultrasonic cleaner;Take
Go out slide and it is risen to sound cleaning 20min in absolute ethyl alcohol；It is last to play sound cleaning 10min in deionized water, take out with blowing
Blower fan is dried up from top to bottom；
（2）It will be placed with after 5.25g average grain diameter 5nm silicon carbide substrate is placed in cavity, first vacuumized about with mechanical pump
30min, then drives molecular pump and continues to vacuumize about 15min, be evacuated to about 1.3 × 10-3Pa or so vacuum, is passed through high-purity argon
Gas；
（3）Substrate heating mechanism is opened, substrate 120 DEG C are heated to, this process can be synchronous with molecular pump vacuum；
（4）Sputtering pressure is adjusted using the plate valve below instrument.Produce and high-purity Ti target material surface is carried out first after aura
10min pre-sputtering, is then passed through argon gas, regulation vacuum room pressure is 0.5Pa, sputtering current 0.25A, waits sputtering to cavity
Baffle plate is opened after stable, is sputtered.Sputtering time is 30s；
（5）After cooling, SiC is taken out standby.
3）Fusion process
（1）Resistance furnace in ultrasonic wave crucible heater is heated to 500 DEG C, it is 99.9% that purity is added into graphite crucible
Aluminium ingot；
（2）730 DEG C are warming up to, aluminium ingot all thawings is treated, adds Al-20%Si intermediate alloys；
（3）Al-20%Si is waited to melt completely, the purity of addition aluminium foil tight is 99.99% Yb+La, wherein aluminium foil
It is 3 with Yb+La mass ratioes:1,5min is incubated, coverture is added, 40min is incubated；
（4）Skim, be sufficiently stirred for after the completion of skimming with graphite rod for the first time after insulation, continue to be incubated 15min；
（5）The aluminum oxide film of bath surface is removed after taking out crucible 2min；
（6）Added while stirring with graphite rod and have been warmed up 40 DEG C of SiC, the position that SiC is added is the whirlpool for stirring semisolid
SiC is all added within center, stirring 2min；
（7）Ultrasound is carried out when being warming up to 730 DEG C, ultrasonic time is 30min, ultrasonic working frequency 20KHz, and operating temperature is
720 DEG C, amplitude >=10 μm；
（8）The Mg of aluminium foil tight is added, the wherein mass ratio of aluminium foil and Mg is 3:1 and coverture is added immediately, addition is covered
Lid agent, is incubated 5min；
（9）Al-5%Ti-0.2%C are added, Slag treatment is taken off for the second time, is poured into a mould after stirring at 720 DEG C, is poured into a mould
When filtered with resistant to elevated temperatures chemical fibre fine-structure mesh；
（10）It is heat-treated after cast, process of thermal treatment is：535 DEG C of solid solution 5h；Transfer time 3s, the cool time is 30s；Timeliness
Temperature is 165 DEG C, and aging time is 4h.Obtain Yb, La and SiC composite inoculating A356.2 alloys, the quality of the component of the alloy
Percentage is：Si：10.03%, Mg：0.41%, Ti：0.08%, Yb：0.21%, La：0.16%, SiC：0.58%, Al：88.53%.
Accompanying drawing 1 is the metallograph of embodiment 1 through Overheating Treatment.
Embodiment 2
A kind of method for preparing Yb, La and SiC composite inoculating A356.2 alloys, comprises the following steps：
1）The pretreatment of carborundum：
（1）5.25g average grain diameter 5nm-90nm carborundum is weighed, 20ML alcohol, ultrasonic disperse 30 minutes is added；
（2）The carborundum that ultrasound is finished is put into air dry oven, and 70 DEG C carry out drying 2h；
（3）Drying is finished, and it is 2h to be put into milling time in grinding alms bowl；
（4）SiC puts silica crucible into, be heated to 295 DEG C insulation 30min, then be warming up to 1195 DEG C insulation 5h, during which every
30min is stirred, time 40s；
（5）Particle of the SiC rejectings more than 100nm after finishing will be pre-processed；
2）SiC subsequent treatment
（1）The slide of magnetron sputtering is placed in the beaker for filling acetone, 20min is cleaned in ultrasonic cleaner；
Take out slide and it is risen to sound cleaning 20min in absolute ethyl alcohol;It is last to play sound cleaning 10min in deionized water, take out and use
Hair-dryer is dried up from top to bottom；
（2）It will be placed with after 5.25g average grain diameter 90nm silicon carbide substrate is placed in cavity, first vacuumized about with mechanical pump
30min, then drives molecular pump and continues to vacuumize about 15min, be evacuated to about 4.0 × 10-3Pa or so vacuum, is passed through high-purity argon
Gas；
（3）Substrate heating mechanism is opened, substrate 120 DEG C are heated to, this process can be synchronous with molecular pump vacuum；
（4）Sputtering pressure is adjusted using the plate valve below instrument.Produce and high-purity Ti target material surface is carried out first after aura
10min pre-sputtering, is then passed through argon gas, regulation vacuum room pressure is 1.1Pa, sputtering current 0.25A, waits sputtering to cavity
Baffle plate is opened after stable, is sputtered.Sputtering time is 300s；
（5）After cooling, SiC is taken out standby.
3）Fusion process
（1）Resistance furnace in ultrasonic wave crucible heater is heated to 550 DEG C, it is 99.9% that purity is added into graphite crucible
Aluminium ingot；
（2）730 DEG C are warming up to, aluminium ingot all thawings is treated, adds Al-20%Si intermediate alloys；
（3）Al-20%Si is waited to melt completely, the purity of addition aluminium foil tight is 99.99% Yb+La, wherein aluminium foil
It is 3 with Yb+La mass ratioes:1,5min is incubated, coverture is added, 40min is incubated；
（4）Skim, be sufficiently stirred for after the completion of skimming with graphite rod for the first time after insulation, continue to be incubated 15min；
（5）The aluminum oxide film of bath surface is removed after taking out silica crucible 2min；
（6）Added while stirring with graphite rod and have been warmed up 40 DEG C of SiC, the position that SiC is added is the whirlpool for stirring semisolid
SiC is all added within center, stirring 2min；
（7）Ultrasound is carried out when being warming up to 730 DEG C, ultrasonic time is 30min, ultrasonic working frequency 20KHz, and operating temperature is
720 DEG C, amplitude >=10 μm；
（8）The Mg of aluminium foil tight is added, the wherein mass ratio of aluminium foil and Mg is 3:1 and coverture is added immediately, be incubated
5min；
（9）Al-5%Ti-0.2%C are added, Slag treatment is taken off for the second time, time 1.5min enters after stirring at 720 DEG C
Row cast, is filtered during cast with resistant to elevated temperatures chemical fibre fine-structure mesh；
（10）It is heat-treated after cast, process of thermal treatment is：538 DEG C of solid solution 5h；Transfer time 3s, the cool time is 33s；Timeliness
Temperature is 168 DEG C, and aging time is 4h.Obtain Yb, La and SiC composite inoculating A356.2 alloys, the quality of the component of the alloy
Percentage is：Si：9.83%, Mg：0.35%, Ti：0.10%, Yb：0.25%, La：0.18%, SiC：0.62%, Al:88.67%；
Accompanying drawing 2 is the metallograph of embodiment 2 through Overheating Treatment.
Embodiment 3
A kind of method for preparing Yb, La and SiC composite inoculating A356.2 alloys, comprises the following steps：
1）The pretreatment of carborundum：
（1）5.25g average grain diameter 5nm-90nm carborundum is weighed, 20ML alcohol, ultrasonic disperse 30 minutes is added；
（2）The carborundum that ultrasound is finished is put into air dry oven, and 70 DEG C carry out drying 2h；
（3）Drying is finished, and it is 2h to be put into milling time in grinding alms bowl；
（4）SiC puts silica crucible into, be heated to 305 DEG C insulation 30min, then be warming up to 1205 DEG C insulation 5h, during which every
30min is stirred, and the time is 40s；
（5）Particle of the SiC rejectings more than 100nm after finishing will be pre-processed；
2）SiC subsequent treatment
（1）The slide of magnetron sputtering is placed in the beaker for filling acetone, 20min is cleaned in ultrasonic cleaner;Take
Go out slide and it is risen to sound cleaning 20min in absolute ethyl alcohol;It is last to play sound cleaning 10min in deionized water, take out with blowing
Blower fan is dried up from top to bottom；
（2）It will be placed with after 5.25g average grain diameter 40nm silicon carbide substrate is placed in cavity, first vacuumized about with mechanical pump
30min, then drives molecular pump and continues to vacuumize about 15min, be evacuated to about 2.0 × 10-3Pa or so vacuum, is passed through high-purity argon
Gas；
（3）Substrate heating mechanism is opened, substrate 120 DEG C are heated to, this process can be synchronous with molecular pump vacuum；
（4）Sputtering pressure is adjusted using the plate valve below instrument.Produce and high-purity Ti target material surface is carried out first after aura
10min pre-sputtering, is then passed through argon gas, regulation vacuum room pressure is 0.8Pa, sputtering current 0.25A, waits sputtering to cavity
Baffle plate is opened after stable, is sputtered.Sputtering time is 150s；
（5）After cooling, SiC is taken out standby.
3）Fusion process
（1）Resistance furnace in ultrasonic wave crucible heater is heated to 520 DEG C, it is 99.9% that purity is added into graphite crucible
Aluminium ingot；
（2）730 DEG C are warming up to, aluminium ingot all thawings is treated, adds Al-20%Si；
（3）Al-20%Si is waited to melt completely, the purity of addition aluminium foil tight is 99.99% Yb+La, wherein aluminium foil
It is 3 with Yb+La mass ratioes:1,5min is incubated, coverture is added, 40min is incubated；
（4）Skim, be sufficiently stirred for after the completion of skimming with graphite rod for the first time after insulation, continue to be incubated 15min；
（5）The aluminum oxide film of bath surface is removed after taking out silica crucible 2min；
（6）Added while stirring with graphite rod and have been warmed up 40 DEG C of SiC, the position that SiC is added is the whirlpool for stirring semisolid
SiC is all added within center, stirring 2min；
（7）Ultrasound is carried out when being warming up to 730 DEG C, ultrasonic time is 30min, ultrasonic working frequency 20KHz, and operating temperature is
720 DEG C, amplitude >=10 μm；
（8）The Mg of aluminium foil tight is added, the wherein mass ratio of aluminium foil and Mg is 3:1 and coverture is added immediately, addition is covered
Lid agent, is incubated 5min；
（9）Al-5%Ti-0.2%C are added, Slag treatment is taken off for the second time, is poured into a mould after stirring at 720 DEG C, is poured into a mould
When filtered with resistant to elevated temperatures chemical fibre fine-structure mesh；
（10）It is heat-treated after cast, process of thermal treatment is：532 DEG C of solid solution 5h；Transfer time 3s, the cool time is 27s；Timeliness
Temperature is 162 DEG C, and aging time is 4h.Obtain Yb, La and SiC composite inoculating A356.2 alloys, the quality of the component of the alloy
Percentage is：Si：9.33%, Mg：0.32%, Ti：0.08%, Yb：0.26%, La：0.19%, SiC：0.65%, Al：89.17%
Accompanying drawing 3 is the metallograph of embodiment 3 through Overheating Treatment.
Ultrasonic wave crucible heater used in embodiment 1-3, including supersonic generator 1, for placing graphite crucible 2
Resistance furnace 5 and support frame 3, the supersonic generator 1 is connected with ultrasonic amplitude transformer 4；Support frame as described above 3 includes fixed cover
31st, 3 first support bars 32 and 3 are vertically arranged second support bar 33, and the fixed cover 31 is sleeved on supersonic generator 1
On, 3 first support bars 32 are uniformly distributed with fixed cover 31 for axle；One end of the first support bar 32 is both connected to solid
Surely cover on 31, the other end is connected to realize the supporting role to supersonic generator 1 with the upper end of second support bar 33.It is described
First support bar 32 is telescopic rod, and second support bar 33 is telescopic rod.First support bar 32 and second support bar 33 are
Aluminum alloy material, the ultrasonic amplitude transformer 4 is two type ultrasonic transformers of full titanium alloy material.
Comparative example 1
A kind of method for preparing A356.2 alloys, comprises the following steps：
（1）Resistance furnace is heated to 500 DEG C, adds the aluminium ingot that purity is 99.9%；
（2）Resistance furnace is warming up to 730 DEG C, treats aluminium ingot all thawings, adds Al-20%Si；
（3）Wait Al-20%Si to melt completely, add coverture, be incubated 40min；
（4）Insulation 40 minutes, was during which stirred once every 5 minutes with graphite rod, continued to be incubated 15min；
（5）Add Mg and add coverture immediately, add coverture, be incubated 5min；
（6）Removal of impurities, suction pouring：Under keeping warm mode, after removal of impurities, the vacuum suction casting forming at 710 DEG C；
（7）Process of thermal treatment is after shaping：535 DEG C of solid solution 5h；Cold water is quenched, and transfer time 20s, the cool time is 30s；When
It is 165 DEG C to imitate temperature, and aging time is 4h, obtain the rotten A356.2 alloys of ytterbium.The mass percent of component is：Si：
12.34%, Mg：0.36%, Ti：0.05%, Al：87.25%.
Accompanying drawing 4 is the metallograph of the comparative example 1 through Overheating Treatment.
Comparative example 2
A kind of method for preparing ytterbium and the rotten A356.2 alloys of lanthanum, comprises the following steps：
（1）Resistance furnace is heated to 500 DEG C, adds the aluminium ingot that purity is 99.9%；
（2）Resistance furnace is warming up to 730 DEG C, treats aluminium ingot all thawings, adds Al-20%Si；
（3）Al-20%Si is waited to melt completely, the purity of addition aluminium foil tight is 99.99% Yb+La, wherein aluminium foil
It is 3 with Yb+La mass ratioes:1,5min is incubated, coverture is added, 40min is incubated；
（4）Insulation 40 minutes, was during which stirred once every 5 minutes with graphite rod, continued to be incubated 15min；
（5）The Mg of aluminium foil tight is added, the wherein mass ratio of aluminium foil and Mg is 3:1 and coverture is added immediately, be incubated
5min；
（6）Removal of impurities, suction pouring：Under keeping warm mode, after removal of impurities, the vacuum suction casting forming at 710 DEG C；
（7）Process of thermal treatment is after shaping：535 DEG C of solid solution 5h；Cold water is quenched；Aging temp is 155 DEG C, and aging time is
4h, obtains ytterbium and the rotten A356.2 alloys of lanthanum.The mass percent of component is：Si：10.81%, Mg：0.41%, Yb：0.15%,
La：0.12%, Al：88.51%.
Accompanying drawing 5 is the metallograph of the comparative example 2 through Overheating Treatment.
Claims (9)
1. a kind of method for preparing Yb, La and SiC composite inoculating A356.2 alloys, it is characterised in that comprise the following steps：
1）The pretreatment of carborundum：
（1）5.25g average grain diameter 5nm-90nm carborundum is weighed, 20ML alcohol, ultrasonic disperse 30 minutes is added；
（2）The carborundum that ultrasound is finished is put into air dry oven, and 70 DEG C carry out drying 2h；
（3）Drying is finished, and it is 2h to be put into milling time in grinding alms bowl；
（4）SiC puts silica crucible into, is heated to 300 DEG C of ± 5 DEG C of insulation 30min, then be warming up to 1200 DEG C of ± 5 DEG C of insulation 5h, phase
Between every 30min stirring, the time is 40s；
（5）Particle of the SiC rejectings more than 100nm after finishing will be pre-processed；
2）SiC subsequent treatment：Magnetron sputtering is carried out after the pretreatment of carborundum；
3）Fusion process
（1）Resistance furnace in ultrasonic wave crucible heater is heated to 500 DEG C ~ 550 DEG C, purity is added into graphite crucible is
99.9% aluminium ingot；
（2）730 DEG C are warming up to, aluminium ingot all thawings is treated, adds Al-20%Si intermediate alloys；
（3）Al-20%Si is waited to melt completely, the purity of addition aluminium foil tight is 99.99% Yb+La, wherein aluminium foil
It is 3 with Yb+La mass ratioes:1,5min is incubated, coverture is added, 40min-55min is incubated；
（4）Skim, be sufficiently stirred for after the completion of skimming with graphite rod for the first time after insulation, continue to be incubated 15min；
（5）Added while stirring with graphite rod and have been warmed up 40 DEG C of SiC, the position that SiC is added is the whirlpool for stirring semisolid
SiC is all added within center, stirring 2min；
（6）Ultrasound is carried out when being warming up to 730 DEG C, the time is 30min；
（7）The Mg of aluminium foil tight is added, the wherein mass ratio of aluminium foil and Mg is 3:1 and coverture is added immediately, be incubated
5min；
（8）Al-5%Ti-1%C are added, Slag treatment is taken off for the second time, is poured into a mould after stirring at 720 DEG C, during cast
Filtered with resistant to elevated temperatures chemical fibre fine-structure mesh；
（9）It is heat-treated after cast, obtains Yb, La and SiC composite inoculating A356.2 alloys.
2. according to the method described in claim 1, it is characterised in that described Yb, La and SiC composite inoculating A356.2 alloys
The mass percent of component is：Si：6.5%-7.5%, Mg：0.30%-0.45%, Ti：0.05%-0.1%, Yb：0.3%-0.5%, La：
0.3%-0.5%, nano SiC：0.5%-1.0%, Fe≤0.2%, Cu≤0.2%, Zn≤0.1%, remaining impurity element≤0.05%,
Surplus is Al.
3. according to the method described in claim 1, it is characterised in that be the step of SiC subsequent treatment：
（1）After average grain diameter 5nm-90nm silicon carbide substrate is placed in cavity, 30min first is vacuumized with mechanical pump, then
Drive molecular pump to continue to vacuumize 15min, be evacuated to 1.3 × 10-3~4.0×10-3Pa vacuum, is passed through high-purity argon gas；
（2）Substrate heating mechanism is opened, substrate 120 DEG C are heated to, this process can be synchronous with molecular pump vacuum；
（3）It is 0.5 ~ 1.1Pa to adjust vacuum room pressure, and sputtering current 0.25A, sputtering time is 30s-300s.
4. according to the method described in claim 1, it is characterised in that step in the fusion process（6）Middle ultrasonic work frequency
Rate 20KHz, operating temperature is 720 DEG C, amplitude >=10 μm.
5. according to the method described in claim 1, it is characterised in that step in the fusion process（9）Middle process of thermal treatment
For：535 DEG C of ± 3 DEG C of solid solution 5h；Transfer time 3s, the cool time is 30s ± 3s；Aging temp is 165 DEG C ± 3 DEG C, during timeliness
Between be 4h.
6. prepare what is used in nano SiC, the method for Yb, La enhancing A356.2 alloys described in a kind of one of claim 1-5
Ultrasonic wave crucible heater, it is characterised in that：Including supersonic generator（1）, resistance furnace for placing graphite crucible（5）With
Support frame（3）, the supersonic generator（1）It is connected with ultrasonic amplitude transformer（4）；
Support frame as described above（3）Including fixed cover（31）, N number of first support bar（32）Second support bar is vertically arranged with N number of（33）,
The fixed cover（31）It is sleeved on supersonic generator（1）On, N number of first support bar（32）With fixed cover（31）It is equal for axle
Even distribution；
The first support bar（32）One end be both connected to fixed cover（31）The upper, other end is and second support bar（33）It is upper
End connects to realize to supersonic generator（1）Supporting role；
The N is the natural number more than or equal to 2.
7. ultrasonic wave crucible heater according to claim 6, it is characterised in that：The first support bar（32）For that can stretch
Contracting bar.
8. the ultrasonic wave crucible heater according to claim 6 or 7, it is characterised in that：Second support bar（33）For that can stretch
Contracting bar.
9. ultrasonic wave crucible heater according to claim 6, it is characterised in that：The first support bar（32）With second
Support bar（33）It is aluminum alloy material, the ultrasonic amplitude transformer（4）For two type ultrasonic transformers of full titanium alloy material, the N is
3。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109943742A (en) * | 2019-04-10 | 2019-06-28 | 安徽信息工程学院 | A kind of alloy improved materials and preparation method thereof |
| CN109943741A (en) * | 2019-04-10 | 2019-06-28 | 安徽信息工程学院 | A kind of multi-functional improved materials and preparation method thereof |
| CN112095031A (en) * | 2020-11-17 | 2020-12-18 | 捷安特轻合金科技(昆山)股份有限公司 | Preparation method of high-strength and high-toughness A356.2 aluminum-based composite material for wheel hub |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484707A (en) * | 2013-09-23 | 2014-01-01 | 同济大学 | Preparation method for SiC particle reinforced aluminum-based composite material |
| CN105063562A (en) * | 2015-07-29 | 2015-11-18 | 西北有色金属研究院 | Preparation method of fiber-reinforced titanium/aluminum base composite material precursor |
| CN106435283A (en) * | 2016-03-07 | 2017-02-22 | 中安顺兴（北京）安全技术有限公司 | Rare earth high-strength foam aluminum prepared through melt foaming method and preparation process of rare earth high-strength foam aluminum |
| CN106521252A (en) * | 2016-12-07 | 2017-03-22 | 中南大学 | Silicon carbide particle reinforcement aluminum-based composite for train brake disc and preparation method |
-
2017
- 2017-04-19 CN CN201710256439.4A patent/CN107119203B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484707A (en) * | 2013-09-23 | 2014-01-01 | 同济大学 | Preparation method for SiC particle reinforced aluminum-based composite material |
| CN105063562A (en) * | 2015-07-29 | 2015-11-18 | 西北有色金属研究院 | Preparation method of fiber-reinforced titanium/aluminum base composite material precursor |
| CN106435283A (en) * | 2016-03-07 | 2017-02-22 | 中安顺兴（北京）安全技术有限公司 | Rare earth high-strength foam aluminum prepared through melt foaming method and preparation process of rare earth high-strength foam aluminum |
| CN106521252A (en) * | 2016-12-07 | 2017-03-22 | 中南大学 | Silicon carbide particle reinforcement aluminum-based composite for train brake disc and preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 冷金凤: "SiCp +Gr/024Al 复合材料的力学性能和加工性能", 《稀有金属》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109943742A (en) * | 2019-04-10 | 2019-06-28 | 安徽信息工程学院 | A kind of alloy improved materials and preparation method thereof |
| CN109943741A (en) * | 2019-04-10 | 2019-06-28 | 安徽信息工程学院 | A kind of multi-functional improved materials and preparation method thereof |
| CN112095031A (en) * | 2020-11-17 | 2020-12-18 | 捷安特轻合金科技(昆山)股份有限公司 | Preparation method of high-strength and high-toughness A356.2 aluminum-based composite material for wheel hub |
| CN112095031B (en) * | 2020-11-17 | 2021-02-09 | 捷安特轻合金科技(昆山)股份有限公司 | Preparation method of high-strength and high-toughness A356.2 aluminum-based composite material for wheel hub |
| DE112021000494B4 (en) | 2020-11-17 | 2024-02-29 | D.Mag (Kunshan) New Material Technology Co., Ltd | Process for producing a high-strength and high-toughness aluminum-based A356.2 composite material for the wheel hubs |
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