CN109439976A - A kind of composite inoculating method of composite modifier and cast Al-Si alloy - Google Patents
A kind of composite inoculating method of composite modifier and cast Al-Si alloy Download PDFInfo
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- CN109439976A CN109439976A CN201910018762.7A CN201910018762A CN109439976A CN 109439976 A CN109439976 A CN 109439976A CN 201910018762 A CN201910018762 A CN 201910018762A CN 109439976 A CN109439976 A CN 109439976A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- 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
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- 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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Abstract
The invention discloses a kind of composite inoculating methods of composite modifier and cast Al-Si alloy, are related to the modifying technology field of cast aluminium alloy gold.This method is mainly gone bad using composite modifier；Wherein, composite modifier includes Al-Ti-B intermediate alloy, Al-Sr intermediate alloy and Al-RE intermediate alloy, and the adding proportion of Al-Ti-B intermediate alloy is the 0.01%~0.04% of the melt quality of cast Al-Si alloy；The additive amount of Sr is the 0.01~0.05% of melt quality in Al-Sr intermediate alloy；RE additive amount is the 0.01%~0.1% of melt quality in Al-RE intermediate alloy.This method is at low cost, easy to operate, and it can reach while refining the purpose of α-Al crystal grain and rotten Eutectic Silicon in Al-Si Cast Alloys by composite inoculating, and the additive amount of Sr, Al-Ti-B are reduced, to improve the tensile strength and elongation percentage of alloy, while the obdurability of cast aluminium alloy gold can be improved.
Description
Technical field
The present invention relates to the modifying technology field of cast aluminium alloy gold, and in particular to a kind of composite modifier and Casting Al-Si
The composite inoculating method of alloy.
Background technique
Al-Si series cast aluminium alloy gold has excellent casting fluidity and air-tightness, small thermal expansion coefficient and good
The advantages that weldability and machining characteristics, is widely used in the neck such as automobile and motorcycle, aerospace, communication and electronic apparatus
Domain.According to statistics, China's aluminium alloy castings yield in 2017 has reached 7,920,000 tons, and wherein aluminium-silicon alloy casting accounts for about therein
85%~90%.In automobile product casting, aluminium-silicon alloy casting also accounts for 80% or more of entire automobile casting total amount, becomes
Mostly important one of the light material of automotive light weight technology.As new-energy automobile, communications industry step up lightweight requirements,
The obdurability of cast aluminium alloy gold is required also higher and higher.
Refining alloy tissue is one of the effective means of metal Strengthening and Toughening, and wherein Metamorphism treatment is at low cost, method is simple
The features such as list, significant effect, it has also become improve aluminum alloy organization and performance one of the most effective ways.Currently, being usually used in α-Al
The fining agent of refinement has Al-Ti-B, Al-Ti, Al-Ti-C, RE etc., and wherein Al-Ti-B is the most commonly used, but for the casting containing Zr
The problem of aluminium alloy is not applicable, while there is also segregations, sedimentation；Sr is that the optimal Eutectic Silicon in Al-Si Cast Alloys alterant of effect is generally acknowledged in industry,
But Sr chemical activity is active, easy scaling loss and air-breathing, damages alloy mechanical property.In order to refine α-Al and Eutectic Silicon in Al-Si Cast Alloys simultaneously, usually
Sr and Al-Ti-B combination addition can not still be solved the problems, such as into Sr air-breathing and scaling loss using composite inoculating technique, but simply.RE
It is a kind of surface active element, crystal grain can not only be inhibited to grow up in aluminium alloy, and generate compound with [H], there is degasification
Purify the function of melt.Zhang Jiahong [lead by Zhang Jiahong, Xing Shuming .Al-Si alloy modification element and its reciprocation [J] material
Report, 2018,32 (11): 1870-1877.] etc. review Sr, La and Sr, Y composite inoculating can effectively refine secondary dendrite spacing and
Eutectic Silicon in Al-Si Cast Alloys tissue；Lan Yefeng [influence of Lan Yefeng, Guo Peng, Zhang Jijun the rare earth to Al-Ti-B-RE intermediate alloy detailed performance
[J] foundry engieering, 2005 (09): 774-775.] confirm that the addition of RE has the grain refining efficiency and timeliness of Al-Ti-B
Raising by a relatively large margin.It can be seen that although RE can improve the rotten and grain refining efficiency to Sr and Al-Ti-B to a certain degree,
It also cannot achieve Eutectic Silicon in Al-Si Cast Alloys refinement synchronous with α-Al crystal grain, improve the obdurability of alloy to a greater degree.
Summary of the invention
The purpose of the present invention is to provide a kind of composite modifiers, the compound change for hypoeutectic or cocrystallized Al-Si alloy
Matter, and the composite modifier can reach while refine the purpose of α-Al crystal grain and rotten Eutectic Silicon in Al-Si Cast Alloys, to improve the tension of alloy
Intensity and elongation percentage.
It is another object of the present invention to provide a kind of composite inoculating method of cast Al-Si alloy, this method is mainly sharp
Composite inoculating is carried out with above-mentioned composite modifier.Therefore, this method is at low cost, easy to operate, and reachable by composite inoculating
To the purpose of α-Al crystal grain and rotten Eutectic Silicon in Al-Si Cast Alloys is refined simultaneously, and the additive amount of Sr, Al-Ti-B are reduced, to improve alloy
Tensile strength and elongation percentage, while the obdurability of cast aluminium alloy gold can be improved.
The present invention solves its technical problem and adopts the following technical solutions to realize.
The present invention proposes a kind of composite modifier, for hypoeutectic or the composite inoculating of cocrystallized Al-Si alloy, composite inoculating
Agent includes:
Al-Ti-B intermediate alloy, Al-Sr intermediate alloy and Al-RE intermediate alloy, wherein Al-Ti-B intermediate alloy
Adding proportion is the 0.01%~0.04% of the melt quality of hypoeutectic or cocrystallized Al-Si alloy；Sr in Al-Sr intermediate alloy
Additive amount is the 0.01~0.05% of melt quality；In Al-RE intermediate alloy RE additive amount be melt quality 0.01%~
0.1%.
The present invention proposes a kind of composite inoculating method of cast Al-Si alloy, mainly utilize above-mentioned composite modifier into
Row is rotten；
Wherein, composite modifier includes Al-Ti-B intermediate alloy, Al-Sr intermediate alloy and Al-RE intermediate alloy, Al-
The adding proportion of Ti-B intermediate alloy is the 0.01%~0.04% of the melt quality of cast Al-Si alloy；Al-Sr intermediate alloy
The additive amount of middle Sr is the 0.01~0.05% of melt quality；RE additive amount is melt quality in Al-RE intermediate alloy
0.01%~0.1%.
The beneficial effect of the composite inoculating method of the composite modifier and cast Al-Si alloy of the embodiment of the present invention is:
The embodiment of the present invention provide cast Al-Si alloy composite inoculating method, mainly utilize composite modifier into
Row is rotten；
Wherein, composite modifier includes Al-Ti-B intermediate alloy, Al-Sr intermediate alloy and Al-RE intermediate alloy, Al-
The adding proportion of Ti-B intermediate alloy is the 0.01%~0.04% of the melt quality of cast Al-Si alloy；Al-Sr intermediate alloy
The additive amount of middle Sr is the 0.01~0.05% of melt quality；RE additive amount is melt quality in Al-RE intermediate alloy
0.01%~0.1%.
In the method, Al-Ti-B mainly plays a part of to refine α-Al matrix, and Sr mainly plays the work of rotten Eutectic Silicon in Al-Si Cast Alloys
With due to the easy scaling loss of Sr element and easy air-breathing, the opportunity of addition and temperature selection are extremely important, and present invention selection is in refining degasification
It is added after removal of impurities, temperature is also selection cast temperature, it is therefore intended that is reduced due to refining bring scaling loss and air-breathing.Due to RE's
Chemical mobility of the surface is very strong, on the one hand RE by chemically reacting with [H] in melt, forms high temperature particle, this is not only α-
Al provides a large amount of nucleation mass point, refines crystal grain, while decreasing because adding Sr bring gettering effect, purifies melt；Separately
One side RE is easily adsorbed on α-Al and Si growing surface, inhibits growing up for crystal grain, further refines crystal grain.But the additive amount of RE needs
Strict control, when too high levels easily with Al, Ti formed Al-Ti-RE compound, poison alterant.Further, since Sr and RE element
It is easy scaling loss, present invention selection is added after refining, and being slowly stirred with tool is uniformly distributed it in the melt, and purpose exists
In reduce because melt be vigorously stirred with non-uniform temperature bring scaling loss and air-breathing, while using RE remove airway dysfunction, reduce because
Add air-breathing brought by alterant.Therefore, composite modifier of the invention, can not only simultaneously α-Al matrix, refining eutectic
Silicon tissue, while can achieve the purpose that degassing and purifying melt, greatly improve alloy obdurability.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the metallographic structure map without rotten ZL101 alloy under low power lens；
Fig. 2 is the metallographic structure map without rotten ZL101 alloy under high power lens；
Fractograph of the ZL101 alloy under low power lens after the Metamorphism treatment that Fig. 3 provides for the embodiment of the present invention 1；
Fractograph of the ZL101 alloy under high power lens after the Metamorphism treatment that Fig. 4 provides for the embodiment of the present invention 1；
Fractograph of the ZL101 alloy under low power lens after the Metamorphism treatment that Fig. 5 provides for the embodiment of the present invention 2；
Fractograph of the ZL101 alloy under high power lens after the Metamorphism treatment that Fig. 6 provides for the embodiment of the present invention 2.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
The composite inoculating method of the composite modifier of the embodiment of the present invention and cast Al-Si alloy is illustrated below.
The embodiment provides a kind of composite modifiers, the compound change for hypoeutectic or cocrystallized Al-Si alloy
Matter, composite modifier include:
Al-Ti-B intermediate alloy, Al-Sr intermediate alloy and Al-RE intermediate alloy, wherein Al-Ti-B intermediate alloy
Adding proportion is the 0.01%~0.04% of the melt quality of hypoeutectic or cocrystallized Al-Si alloy；Sr in Al-Sr intermediate alloy
Additive amount is the 0.01~0.05% of melt quality；In Al-RE intermediate alloy RE additive amount be melt quality 0.01%~
0.1%.
In detail, what RE was selected is the lightweight rare earth element of relative low price.In three kinds of components, Al-Ti-B is mainly risen
The effect of α-Al matrix is refined, and Sr mainly plays rotten Eutectic Silicon in Al-Si Cast Alloys.
Further, in the preferred embodiment, the RE in Al-RE intermediate alloy be one of La or Ce or
Two kinds of person.
A kind of composite inoculating method of cast Al-Si alloy, is mainly gone bad using above-mentioned composite modifier；
Wherein, composite modifier includes Al-Ti-B intermediate alloy, Al-Sr intermediate alloy and Al-RE intermediate alloy, Al-
The adding proportion of Ti-B intermediate alloy is the 0.01%~0.04% of the melt quality of cast Al-Si alloy；Al-Sr intermediate alloy
The additive amount of middle Sr is the 0.01~0.05% of melt quality；RE additive amount is melt quality in Al-RE intermediate alloy
0.01%~0.1%.
Further, in the preferred embodiment, the composite inoculating method of cast Al-Si alloy, comprising:
Melt will be obtained after cast Al-Si alloy all fusing；
Melt is refined online；
It skims after heat preservation a period of time；
Addition is wrapped with aluminium foil, by preheated composite modifier, and is pressed into titanium tool the inside of melt,
And being slowly stirred after melting be uniformly distributed in composite modifier can in melt；
Casting ingot or tundish, prepare cast Al-Si alloy ingot or casting after standing a period of time.
In detail, in the method, Al-Ti-B mainly plays a part of to refine α-Al matrix, and Sr mainly plays rotten eutectic
The effect of silicon, due to the easy scaling loss of Sr element and easy air-breathing, the opportunity of addition and temperature are extremely important, and present invention selection is removed in refining
It is added after gas removal of impurities, temperature is also selection cast temperature, it is therefore intended that is reduced due to refining bring scaling loss and air-breathing.Due to RE
Chemical mobility of the surface it is very strong, RE with [H] in melt on the one hand by chemically reacting, and formation high temperature particle, this is not only
α-Al provides a large amount of nucleation mass point, refines crystal grain, while decreasing because adding Sr bring gettering effect, purifies melt；
Another aspect RE is easily adsorbed on α-Al and Si growing surface, inhibits growing up for crystal grain, further refines crystal grain.But the additive amount of RE
Need strict control, when too high levels easily with Al, Ti formed Al-Ti-RE compound, poison alterant.Further, since Sr and RE member
Element is easy scaling loss, and present invention selection is added after refining, and being slowly stirred with tool is uniformly distributed it in the melt, purpose
Be reduce because melt be vigorously stirred with non-uniform temperature bring scaling loss and air-breathing, while using RE remove airway dysfunction, reduce
Because of air-breathing brought by addition alterant.Therefore, composite modifier of the invention can not only be total in α-Al matrix, refinement simultaneously
Crystal silicon tissue, while can achieve the purpose that degassing and purifying melt, greatly improve alloy obdurability.
Further, in the preferred embodiment, will cast Al-Si alloy all to obtain melt specific after fusing
Include:
It will be in the raw material investment smelting furnace for the cast Al-Si alloy that prepared；
Keep the temperature 30min after heating the raw material to 500 DEG C, then be warming up to 750~800 DEG C, further, it is of the invention compared with
It further include that the temperature of melt is reduced to 700~720 DEG C before carrying out online refining to melt in good embodiment.By to temperature
The control of degree and time can be reduced further due to refining bring scaling loss and air-breathing.Certainly, in other realities of the invention
It applies in example, temperature and time can also be adjusted accordingly according to demand, and the embodiment of the present invention is without limitation.
Further, in the preferred embodiment, in the step of skimming after keeping the temperature a period of time, a period of time
For 15~30min.
Further, in the preferred embodiment, casting ingot or tundish after standing a period of time, system
It is for a period of time 30~60min in the step of standby cast Al-Si alloy ingot or casting.
Feature and performance of the invention are described in further detail with reference to embodiments.
The embodiment of the present invention selects commercial ZL101 hypoeutectic aluminium silicon cast aluminium alloy gold, and chemical component is shown in Table 1, goes bad
Preceding alloy microstructure map is as depicted in figs. 1 and 2.
The chemical component (wt.%) of 1 embodiment the selection of material of table
| Alloy designations | Si | Fe | Mg | Mn | Cu | Ti | It is other | Al |
| ZL101 | 7.28 | 0.12 | 0.38 | 0.02 | 0.013 | 0.02 | ≤0.15 | Surplus |
Embodiment 1
Present embodiments provide a kind of composite inoculating method of cast Al-Si alloy comprising following steps:
S1: the alloy raw material prepared is put into smelting furnace, and keeps the temperature 30 minutes after heating the raw material to 500 DEG C, then rise
Temperature is to 750 DEG C；
S2: after raw material all fusing, melt temperature is reduced to 700 DEG C.Then aluminum melt is refined online.
S3: heat preservation is skimmed after 15 minutes, and addition is wrapped with aluminium foil, Al-Ti-B, Al-Sr intermediate alloy of preheated mistake,
The additional amount of Al-Ti-B, Sr are respectively the 0.02% of melt quality, 0.04%, are then pressed into melt with titanium tool
Portion, being slowly stirred melt after fusing is uniformly distributed it.
S4: melt stands ingot of casting after sixty minutes, preparation casting 1# aluminium alloy ingots.
The chemical component of beta alloy after Metamorphism treatment, with the low power and mirco structure of micro- sem observation alloy, metallographic
Structure is as shown in Fig. 3 and Fig. 3.Meanwhile also to the stretching after ingot casting progress T5 heat treatment with omnipotent mechanics machine beta alloy
Mechanical property.
Embodiment 2
Present embodiments provide a kind of composite inoculating method of cast Al-Si alloy comprising following steps:
S1: the alloy raw material prepared is put into smelting furnace, and keeps the temperature 30 minutes after heating the raw material to 500 DEG C, then rise
Temperature is to 800 DEG C；
S2: after raw material all fusing, melt temperature is reduced to 710 DEG C.Then aluminum melt is refined online.
S3: heat preservation is skimmed after 30 minutes, and addition is wrapped with aluminium foil, among Al-Ti-B, Al-Sr, Al-RE of preheated mistake
Alloy, the additional amount of Al-Ti-B, Sr, RE are respectively 0.02%, 0.04%, the 0.05% of melt quality, with titanium tool by its
It is pressed into inside melt, melt is slowly stirred after fusing is uniformly distributed it.
S4: melt stands ingot of casting after sixty minutes, prepares cast aluminium alloy gold ingot.
The chemical component of beta alloy after Metamorphism treatment, with the low power and mirco structure of micro- sem observation alloy, metallographic
Structure is as shown in Figure 5 and Figure 6, while also to the drawing force after ingot casting progress T5 heat treatment with omnipotent mechanics machine beta alloy
Learn performance.
Embodiment 3
Present embodiments provide a kind of composite inoculating method of cast Al-Si alloy comprising following steps:
S1: the alloy raw material prepared is put into smelting furnace, and keeps the temperature 30 minutes after heating the raw material to 500 DEG C, then rise
Temperature is to 760 DEG C；
S2: after raw material all fusing, melt temperature is reduced to 720 DEG C.Then aluminum melt is refined online.
S3: heat preservation is skimmed after twenty minutes, and addition is wrapped with aluminium foil, among Al-Ti-B, Al-Sr, Al-RE of preheated mistake
Alloy, the additional amount of Al-Ti-B, Sr, RE are respectively 0.04%, 0.03%, the 0.05% of melt quality, with titanium tool by its
It is pressed into inside melt, melt is slowly stirred after fusing is uniformly distributed it.
S4: melt stands ingot of casting after forty minutes, prepares cast aluminium alloy gold ingot.
The chemical component of beta alloy after Metamorphism treatment, with the low power and mirco structure of micro- sem observation alloy, to ingot casting
With the tensile mechanical properties of omnipotent mechanics machine beta alloy after progress T5 heat treatment.
Embodiment 4
Present embodiments provide a kind of composite inoculating method of cast Al-Si alloy comprising following steps:
S1: the alloy raw material prepared is put into smelting furnace, and keeps the temperature 30 minutes after heating the raw material to 500 DEG C, then rise
Temperature is to 780 DEG C；
S2: after raw material all fusing, melt temperature is reduced to 720 DEG C.Then aluminum melt is refined online.
S3: heat preservation is skimmed after 30 minutes, and addition is wrapped with aluminium foil, among Al-Ti-B, Al-Sr, Al-RE of preheated mistake
Alloy, the additional amount of Al-Ti-B, Sr, RE are respectively 0.01%, 0.02%, the 0.1% of melt quality, with titanium tool by its
It is pressed into inside melt, melt is slowly stirred after fusing is uniformly distributed it.
S4: melt turns liquid to tundish after standing 30 minutes, prepares casting Al-Si alloy casting.
The chemical component of beta alloy after Metamorphism treatment, with the low power and mirco structure of micro- sem observation alloy, to casting
With the tensile mechanical properties of omnipotent mechanics machine beta alloy after progress T5 heat treatment.
Chemical component is shown in Table 2 after Examples 1 to 4 cast aluminium alloy gold composite inoculating.
The ingredient of alloy after 2 Examples 1 to 4 composite inoculating of table
| Embodiment | Si | Fe | Mg | Mn | Cu | Ti | It is other | Al |
| 1 | 7.28 | 0.12 | 0.38 | 0.02 | 0.013 | 0.02 | ≤0.15 | Surplus |
| 2 | 7.09 | 0.14 | 0.35 | 0.02 | 0.011 | 0.03 | ≤0.15 | Surplus |
| 3 | 7.17 | 0.15 | 0.33 | 0.03 | 0.008 | 0.03 | ≤0.15 | Surplus |
| 4 | 7.24 | 0.13 | 0.36 | 0.02 | 0.01 | 0.03 | ≤0.15 | Surplus |
Characteristics of As-cast Structure data statistic 3 before and after Examples 1 to 4 cast aluminium alloy gold composite inoculating.
Tissue characteristic data statistics before and after 3 Examples 1 to 4 composite inoculating of table
| Embodiment | Secondary dendrite spacing (μm) | Eutectic Silicon in Al-Si Cast Alloys average area (μm2) | Eutectic Silicon in Al-Si Cast Alloys roundness |
| Before rotten | 50 | 38.2 | 4.43 |
| 1 | 40 | 7.9 | 2.43 |
| 2 | 32 | 7.2 | 2.41 |
| 3 | 34 | 6.4 | 2.37 |
| 4 | 33 | 6.9 | 2.39 |
T5 state mechanical property before and after Examples 1 to 4 cast aluminium alloy gold composite inoculating is shown in Table 4.
The T5 state mechanical property of alloy after 4 Examples 1 to 4 composite inoculating of table
| Embodiment | Tensile strength (MPa) | Yield strength (MPa) | Elongation percentage (%) |
| Before rotten | 255 | 170 | 8.0 |
| 1 | 250 | 155 | 13.9 |
| 2 | 255 | 170 | 16.9 |
| 3 | 265 | 165 | 19.0 |
| 4 | 255 | 155 | 16.1 |
In conclusion data and Fig. 1 to Fig. 5 according to table 1 to table 4 of the embodiment of the present invention are it is found that reality of the invention
The composite modifier of example offer is applied for hypoeutectic or the composite inoculating of cocrystallized Al-Si alloy, and the composite modifier can reach together
When refine α-Al crystal grain and rotten Eutectic Silicon in Al-Si Cast Alloys purpose, to improve the tensile strength and elongation percentage of alloy.Implementation of the invention
The composite inoculating method for the cast Al-Si alloy that example provides, this method mainly carry out compound change using above-mentioned composite modifier
Matter.Therefore, this method is at low cost, easy to operate, and can reach by composite inoculating while refining α-Al crystal grain and rotten eutectic
The purpose of silicon, and the additive amount of Sr, Al-Ti-B are reduced, to improve the tensile strength and elongation percentage of alloy, while casting can be improved
Make the obdurability of aluminium alloy.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (8)
1. a kind of composite modifier, for hypoeutectic or the composite inoculating of cocrystallized Al-Si alloy, which is characterized in that the compound change
Matter agent includes:
Al-Ti-B intermediate alloy, Al-Sr intermediate alloy and Al-RE intermediate alloy, wherein the Al-Ti-B intermediate alloy
Adding proportion is the 0.01%~0.04% of the melt quality of hypoeutectic or cocrystallized Al-Si alloy；In the Al-Sr intermediate alloy
The additive amount of Sr is the 0.01~0.05% of the melt quality；RE additive amount is melt quality in the Al-RE intermediate alloy
0.01%~0.1%.
2. composite modifier according to claim 1, it is characterised in that:
RE in the Al-RE intermediate alloy is one of La or Ce or two kinds.
3. a kind of composite inoculating method of cast Al-Si alloy, it is characterised in that:
The composite inoculating method of the cast Al-Si alloy is mainly become using composite modifier described in as claimed in claim 1 or 22
Matter；
Wherein, the composite modifier includes Al-Ti-B intermediate alloy, Al-Sr intermediate alloy and Al-RE intermediate alloy, institute
State Al-Ti-B intermediate alloy adding proportion be cast Al-Si alloy melt quality 0.01%~0.04%；The Al-Sr
The additive amount of Sr is the 0.01~0.05% of the melt quality in intermediate alloy；RE additive amount in the Al-RE intermediate alloy
It is the 0.01%~0.1% of melt quality.
4. the composite inoculating method of cast Al-Si alloy according to claim 3 characterized by comprising
Melt will be obtained after cast Al-Si alloy all fusing；
The melt is refined online；
It skims after heat preservation a period of time；
Addition is wrapped with aluminium foil, is pressed into the melt by the preheated composite modifier, and with titanium tool
Inside, and being slowly stirred after melting be uniformly distributed in the composite modifier can in the melt；
Casting ingot or tundish, prepare cast Al-Si alloy ingot or casting after standing a period of time.
5. the composite inoculating method of cast Al-Si alloy according to claim 4, which is characterized in that by cast Al-Si alloy
All the melt is obtained after fusing to specifically include:
It will be in the raw material investment smelting furnace for the cast Al-Si alloy that prepared；
30min is kept the temperature after heating the raw material to 500 DEG C, then is warming up to 750~800 DEG C, so that obtaining after raw material fusing
The melt.
6. the composite inoculating method of cast Al-Si alloy according to claim 4, it is characterised in that:
It further include that the temperature of the melt is reduced to 700~720 DEG C before carrying out online refining to the melt.
7. the composite inoculating method of cast Al-Si alloy according to claim 4, it is characterised in that:
It is for a period of time 15~30min in the step of skimming after keeping the temperature a period of time.
8. the composite inoculating method of cast Al-Si alloy according to claim 4, it is characterised in that:
In the step of casting after standing a period of time ingot or tundish, preparing cast Al-Si alloy ingot or casting, one section
Time is 30~60min.
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| CN110358950A (en) * | 2019-07-12 | 2019-10-22 | 上海大学 | Hypoeutectic cast aluminium-silicon alloy Modification Manners |
| CN110656263A (en) * | 2019-11-06 | 2020-01-07 | 中国科学院金属研究所 | High-performance Al-Si series welding wire alloy containing trace La element and preparation method thereof |
| CN111519056A (en) * | 2020-05-18 | 2020-08-11 | 阿路米（无锡）有限公司 | Additive formula for eliminating pinhole defect of aluminum alloy |
| CN112342416A (en) * | 2020-10-20 | 2021-02-09 | 东莞理工学院 | Method for improving low-temperature mechanical property of cast Al-Si alloy |
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| CN116287836A (en) * | 2023-03-17 | 2023-06-23 | 昆明冶金研究院有限公司 | Composite refinement modifier for casting aluminum-silicon alloy and application thereof |
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| CN110358950A (en) * | 2019-07-12 | 2019-10-22 | 上海大学 | Hypoeutectic cast aluminium-silicon alloy Modification Manners |
| CN110358950B (en) * | 2019-07-12 | 2021-06-04 | 上海大学 | Modification method for hypoeutectic cast aluminum-silicon alloy |
| CN110656263A (en) * | 2019-11-06 | 2020-01-07 | 中国科学院金属研究所 | High-performance Al-Si series welding wire alloy containing trace La element and preparation method thereof |
| CN111519056A (en) * | 2020-05-18 | 2020-08-11 | 阿路米（无锡）有限公司 | Additive formula for eliminating pinhole defect of aluminum alloy |
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| CN113088737A (en) * | 2021-04-14 | 2021-07-09 | 广东省科学院材料与加工研究所 | Compound alterant for deeply modifying eutectic silicon and preparation method thereof |
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| CN114214534A (en) * | 2021-12-27 | 2022-03-22 | 上海耀鸿科技股份有限公司 | Modified aluminum alloy and preparation method thereof |
| CN114277272A (en) * | 2021-12-27 | 2022-04-05 | 上海耀鸿科技股份有限公司 | Composite rare earth alloy for modifying aluminum alloy and preparation method thereof |
| WO2023125262A1 (en) * | 2021-12-27 | 2023-07-06 | 上海耀鸿科技股份有限公司 | Modified aluminum alloy and preparation method therefor |
| CN114293044A (en) * | 2021-12-30 | 2022-04-08 | 上海耀鸿科技股份有限公司 | High-plasticity composite modified aluminum alloy part and preparation method thereof |
| CN115074582A (en) * | 2022-06-20 | 2022-09-20 | 中南大学 | Preparation method of hypoeutectic Al-Ce alloy with bimodal grain structure |
| CN116287836A (en) * | 2023-03-17 | 2023-06-23 | 昆明冶金研究院有限公司 | Composite refinement modifier for casting aluminum-silicon alloy and application thereof |
| CN116426779A (en) * | 2023-05-18 | 2023-07-14 | 东北大学 | Composite modifier for Al-Si casting alloy and modification treatment method thereof |
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Address after: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Patentee after: Institute of materials and processing, Guangdong Academy of Sciences Address before: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Patentee before: Guangdong Institute Of Materials And Processing |
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