CN106676341B - A kind of rolling mill practice of microalloy aluminum matrix composite - Google Patents
A kind of rolling mill practice of microalloy aluminum matrix composite Download PDFInfo
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- CN106676341B CN106676341B CN201611179327.5A CN201611179327A CN106676341B CN 106676341 B CN106676341 B CN 106676341B CN 201611179327 A CN201611179327 A CN 201611179327A CN 106676341 B CN106676341 B CN 106676341B
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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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- 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
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
- C22C1/1052—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites by mixing and casting metal matrix composites with reaction
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0073—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only borides
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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 present invention relates to a kind of preparation process of microalloy aluminum matrix composite, a kind of specifically rolling mill practice of microalloy composite material.Dry fluorine zirconic acid sylvite and potassium fluoborate powder are mainly added in the AlSi9Cu3 alloys for being melted to certain temperature by the present invention, are then reacted, and the stirring of certain way is carried out in reaction process.Melt after a certain period of time, is carried out refining of skimming by reaction, is then down to certain temperature and Al 10Ce are added, reacted, and reaction is skimmed refining again after a certain period of time, after progress copper mold casting, copper mold is down to certain temperature after casting and is directly rolled.The aluminum matrix composite crystal grain prepared by this method is comparatively fine mellow and full, and material granule distribution is more uniform, and silicon distributed mutually is uniformly in material and pattern is in elliposoidal, and composite materials property improves, and especially mechanical behavior under high temperature is also excellent in its matrix alloy.
Description
Technical field
The present invention relates to a kind of preparation method of microalloying composite material, in particular to microalloying aluminum matrix composites
A kind of rolling mill practice.
Background technology
Microalloying is that centainly modified one kind is carried out to material by adding some micro specific elements to material
Method can may generate some second phases of disperse by microalloying by change material while brittleness phase morphology
Grain, to improve the mechanical property of material.Material mechanical performance is greatly improved by adding a small amount of alloying element, is come from source
Material is improved, certain cost has been saved.The research for carrying out microalloying to composite material at present is seldom, by aluminum-base composite
The microalloying of material can be modified the reunion situation of the pattern of Si phases and improvement in-situ particle in aluminum matrix composite, improve
The mechanical property of composite material.
Big plastic deformation is carried out to the aluminum matrix composite of microalloying by rolling, this larger deformation can be passed through
So that the particle of reunion is spread out, while acicular silicon phase and larger brittlement phase in the material that breaks, makes material structure more
Uniformly, the mechanical property of aluminum matrix composite is improved.Hot rolling simultaneously can eliminate the hole in material, close material structure and
By recrystallizing the crystal grain come refiner material, the mechanical property of material is increased substantially.By multiple to microalloying aluminum-base composite
Condensation material rolling is found, compares its matrix alloy, its greatly excellent matrix alloy of mechanical behavior under high temperature of composite material.Illustrating can
To roll plate by rolling to prepare high-temperature resistant composite material, can apply in the high temperature environment.
Existing literature search is found：Application No. is 201510334398.7, a kind of entitled rolling high-strength degree duralumin
The method of alloy will carry out the pre-heat treatment during the rolling process, and the present invention is saved using casting casting waste heat Direct Rolling
Processing step reduces cost.Application No. is 201510939875.2, a kind of entitled aluminium alloy thick plate laminated rolling technique,
Preparation process includes：Melt melting, ingot casting casting, ingot mill surface and Homogenization Treatments, surface treatment, lamination electric welding, lamination expand
Annealing, the processing steps such as hot rolling are dissipated, main technological steps of the present invention are melting, hot rolling, annealing, cold rolling.The present invention need not roll
Pretreatment before system, it is simple for process, it is with short production cycle, it is cost-effective.
Invention content
The object of the present invention is to provide one kind rolling plate with high-temperature resistant composite material, passes through the knot of microalloying and rolling
It closes and improves its mechanical behavior under high temperature while material ambient temperature mechanical properties to improve.
The preparation method of the present invention includes the following steps：（1）By fluorine zirconic acid sylvite and the drying of potassium fluoborate powder with spare；
（2）The AlSi9Cu3 alloys of 600g are put into and is preheated to heating and melting in 375 ~ 440 DEG C of graphite crucibles and is heated to 795 ~ 830
℃；（3）Potassium fluorozirconate spare 60g and potassium fluoborate mixed-powder are divided 2 times and are put into graphite crucible and according to certain way
Stirring, agitating mode are：It is manually stirred using graphite rod, stirs 10min every time, melt is quiet to 10min, this step weight
It is 1 time multiple, while temperature is maintained at 795 ~ 830 DEG C in whipping process；（4）After stirring, melt in graphite crucible is kept the temperature
Melt is down to 735 ~ 760 DEG C after soaking time and skims in a certain way, is concise by 5min, and certain way refers to：
It at 735 ~ 760 DEG C, is manually skimmed using Slag Tool, after skimming, refining agent refining is added, and stand 2min, works as standing
After slagging agent be added skim again, continue to be put into refining agent being refined again after skimming；（5）After concise
Melt keeps the temperature 3 ~ 5min, and the Al-10Ce of 3 ~ 9g is added after heat preservation, carries out reaction certain time according to certain way, instead
According to step after between seasonable（4）Mode skimmed and refined again；（6）After concise, melt is down to 720 ~
750 DEG C of carry out copper mold casting, copper mold are preheated to 120 ~ 150 DEG C in advance, and copper mold size is 100mm × 50mm × 12mm, has been cast
Cheng Hourang copper mold Temperature falls cool down；（7）After copper mold is down to 280 ~ 350 DEG C, ingot casting is taken out, is directly rolled, rolled
Method is：Hot rolling+cold rolling carries out 375 DEG C × 1h and anneals and be air-cooled to room temperature, continuing cold rolling, hot rolling total deformation after hot rolling
It is 50 ~ 60%, cold rolling total deformation is 17 ~ 20%.
Compared with prior art, the present invention improves the mechanical property of aluminum matrix composite by microalloying from source
Can, internal flaw and crystal grain thinning in material are eliminated further through hot rolling, and rolled in the case of half as cast condition, subtracted
Lack processing step, it is cost-effective, while surface peening, the whole room temperature mechanics for improving material are carried out to material further through cold rolling
In addition to this performance also improves the mechanical behavior under high temperature of material, rolling plate to prepare high temperature resistant composite provides possibility side
Case.
Specific implementation mode
It elaborates below to the embodiment of the present invention：The present embodiment is carried out lower based on the technical solution of the present invention
Implement, gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Case.
Embodiment 1：
The present invention material be：TiB2/ AlSi9Cu3 composite materials, ingredient are：Si:8 ~ 9.5%, Cu:2 ~ 3%, TiB2:
1.4%, Ce:0.05%, remaining is Al.
Processing step：（1）By fluorine zirconic acid sylvite and the drying of potassium fluoborate powder with spare；（2）By the AlSi9Cu3 of 600g
Alloy, which is put into, to be preheated to heating and melting in 375 ~ 440 DEG C of graphite crucibles and is heated to 795 ~ 830 DEG C；（3）By the spare fluorine zirconiums of 60g
Sour potassium and potassium fluoborate mixed-powder, which divide 2 times, to be put into graphite crucible and is stirred according to certain way, and agitating mode is：Utilize stone
Inker is manually stirred, and stirs 10min every time, and melt is quiet to 10min, this step is repeated 1 times, while whipping process medium temperature
Degree is maintained at 795 ~ 830 DEG C；（4）After stirring, melt in graphite crucible is kept the temperature into 5min, by melt after soaking time
It is down to 735 ~ 760 DEG C and skims in a certain way, is concise, certain way refers to：At 735 ~ 760 DEG C, Slag Tool is utilized
It manually skims, after skimming, refining agent refining is added, and stand 2min, slagging agent is added after standing and skims again,
Continue to be put into refining agent after skimming and be refined again；（5）Melt after will be concise keeps the temperature 3 ~ 5min, when heat preservation terminates
The Al-10Ce of 3g is added afterwards, is carried out reaction certain time according to certain way, according to step after the reaction time（4）Side
Formula is skimmed and is refined again；（6）After concise, melt is down to 720 ~ 750 DEG C of carry out copper mold casting, copper mold is pre- in advance
For heat to 120 ~ 150 DEG C, copper mold size is 100mm × 50mm × 12mm, and copper mold Temperature fall is allowed to cool down after the completion of casting；（7）When
After copper mold is down to 280 ~ 350 DEG C, ingot casting is taken out, is directly rolled, milling method is：Hot rolling+cold rolling carries out after hot rolling
375 DEG C × 1h anneals and is air-cooled to room temperature, is continuing cold rolling, and hot rolling total deformation is 50 ~ 60%, and cold rolling total deformation is 17 ~
20%。
Embodiment 2：
The present invention material be：TiB2/ AlSi9Cu3 composite materials, ingredient are：Si：8 ~ 9.5%, Cu：2 ~ 3%, TiB2：
1.4%, Ce：0.1%, remaining is Al.
Processing step：（1）By fluorine zirconic acid sylvite and the drying of potassium fluoborate powder with spare；（2）By the AlSi9Cu3 of 600g
Alloy, which is put into, to be preheated to heating and melting in 375 ~ 440 DEG C of graphite crucibles and is heated to 795 ~ 830 DEG C；（3）By the spare fluorine zirconiums of 60g
Sour potassium and potassium fluoborate mixed-powder, which divide 2 times, to be put into graphite crucible and is stirred according to certain way, and agitating mode is：Utilize stone
Inker is manually stirred, and stirs 10min every time, and melt is quiet to 10min, this step is repeated 1 times, while whipping process medium temperature
Degree is maintained at 795 ~ 830 DEG C；（4）After stirring, melt in graphite crucible is kept the temperature into 5min, by melt after soaking time
It is down to 735 ~ 760 DEG C and skims in a certain way, is concise, certain way refers to：At 735 ~ 760 DEG C, Slag Tool is utilized
It manually skims, after skimming, refining agent refining is added, and stand 2min, slagging agent is added after standing and skims again,
Continue to be put into refining agent after skimming and be refined again；（5）Melt after will be concise keeps the temperature 3 ~ 5min, when heat preservation terminates
The Al-10Ce of 6g is added afterwards, is carried out reaction certain time according to certain way, according to step after the reaction time（4）Side
Formula is skimmed and is refined again；（6）After concise, melt is down to 720 ~ 750 DEG C of carry out copper mold casting, copper mold is pre- in advance
For heat to 120 ~ 150 DEG C, copper mold size is 100mm × 50mm × 12mm, and copper mold Temperature fall is allowed to cool down after the completion of casting；（7）When
After copper mold is down to 280 ~ 350 DEG C, ingot casting is taken out, is directly rolled, milling method is：Hot rolling+cold rolling carries out after hot rolling
375 DEG C × 1h anneals and is air-cooled to room temperature, is continuing cold rolling, and hot rolling total deformation is 50 ~ 60%, and cold rolling total deformation is 17 ~
20%。
Embodiment 3：
The present invention material be：TiB2/ AlSi9Cu3 composite materials, ingredient are：Si:8 ~ 9.5%, Cu:2 ~ 3%, TiB2:
1.4%, Ce:0.15%, remaining is Al.
Processing step：（1）By fluorine zirconic acid sylvite and the drying of potassium fluoborate powder with spare；（2）By the AlSi9Cu3 of 600g
Alloy, which is put into, to be preheated to heating and melting in 375 ~ 440 DEG C of graphite crucibles and is heated to 795 ~ 830 DEG C；（3）By the spare fluorine zirconiums of 60g
Sour potassium and potassium fluoborate mixed-powder, which divide 2 times, to be put into graphite crucible and is stirred according to certain way, and agitating mode is：Utilize stone
Inker is manually stirred, and stirs 10min every time, and melt is quiet to 10min, this step is repeated 1 times, while whipping process medium temperature
Degree is maintained at 795 ~ 830 DEG C；（4）After stirring, melt in graphite crucible is kept the temperature into 5min, by melt after soaking time
It is down to 735 ~ 760 DEG C and skims in a certain way, is concise, certain way refers to：At 735 ~ 760 DEG C, Slag Tool is utilized
It manually skims, after skimming, refining agent refining is added, and stand 2min, slagging agent is added after standing and skims again,
Continue to be put into refining agent after skimming and be refined again；（5）Melt after will be concise keeps the temperature 3 ~ 5min, when heat preservation terminates
The Al-10Ce of 9g is added afterwards, is carried out reaction certain time according to certain way, according to step after the reaction time（4）Side
Formula is skimmed and is refined again；（6）After concise, melt is down to 720 ~ 750 DEG C of carry out copper mold casting, copper mold is pre- in advance
For heat to 120 ~ 150 DEG C, copper mold size is 100mm × 50mm × 12mm, and copper mold Temperature fall is allowed to cool down after the completion of casting；（7）When
After copper mold is down to 280 ~ 350 DEG C, ingot casting is taken out, is directly rolled, milling method is：Hot rolling+cold rolling carries out after hot rolling
375 DEG C × 1h anneals and is air-cooled to room temperature, is continuing cold rolling, and hot rolling total deformation is 50 ~ 60%, and cold rolling total deformation is 17 ~
20%。
It is composite materials property table below：
Table 1：Different materials mechanical property after rolling
Table 2：Without rolling different materials mechanical property
By 1 table 2 of table it can be seen that microalloying can increase substantially material mechanical performance, rolling can also be significantly
Improve material mechanical performance, in addition to this by the mechanical behavior under high temperature of microalloying and the composite material of rolling it is more excellent in
The alloy that does not roll and using it as the composite material of matrix.
Claims (2)
1. a kind of rolling mill practice of microalloy aluminum matrix composite, it is characterised in that following steps：
（1）The AlSi9Cu3 alloys of 600g are put into and is preheated to heating fusing in 375 ~ 440 DEG C of graphite crucible and is heated to 795
~830℃；
（2）The spare potassium fluorozirconate and potassium fluoborate mixed-powder that quality is accounted for substrate quality 8 ~ 9% is added in graphite crucible simultaneously
Stirring；Powder feed postition：Powder is added in melts points for 2 times, additions time interval is 3min, every time after addition powder all into
The artificial stirring of 1 ~ 2min of row；Agitating mode：It is manually stirred using graphite rod, stirs 10min every time, melt is quiet extremely
10min, this step are repeated 1 times, while temperature is maintained at 795 ~ 830 DEG C in whipping process；
（3）After stirring, melt in graphite crucible is kept the temperature into 5min, melt is down to 735 ~ 760 DEG C after soaking time
And skimmed, refined, the refining and the mode of skimming are：At 735 ~ 760 DEG C, manually skimmed using Slag Tool, knot of skimming
Shu Hou is added refining agent refining, and stands 2min, and slagging agent is added after standing and skims again, continues after skimming
Refining agent is put into be refined again；
（4）Melt after refining is kept the temperature into 3 ~ 5min, 0.5 ~ 1.5%Al- that quality is substrate quality is added after heat preservation
10Ce, and at a temperature of 735 ~ 760 DEG C, graphite rod stirs 1 ~ 2min, 3 ~ 5min of reaction is stood, after reaction according to step
（3）Mode skimmed and refined again；
（5）After refining, melt is down to 720 ~ 750 DEG C of carry out copper mold casting, allows copper mold empty using nature after the completion of casting
The mode of air cooling cools down；
（6）When copper mold is cooled to 280 ~ 350 DEG C, ingot casting is taken out, is directly rolled, rolling mode is：Roll is added in advance
Heat is to 200 DEG C, and by casting Direct Rolling, each volume under pressure is 2mm, is rolled 3 times in total, and total deformation is 50 ~ 60%；Work as hot rolling
Rolled parts is annealed at 375 DEG C after the completion and 1h and is air-cooled to room temperature, roll is also also air-cooled to room temperature, carries out cold rolling, cold rolling
Each volume under pressure is 0.5mm, is rolled 4 times in total, and total deformation is 17 ~ 20%；
Above-mentioned microalloy aluminum matrix composite refers to TiB2Particle REINFORCED Al Si9Cu3 composite materials, group are divided into:Si:8~
9.5%, Cu：2 ~ 3%, TiB2:1.4%, Ce：0.05 ~ 0.15%, remaining is Al.
2. according to a kind of rolling mill practice of microalloy aluminum matrix composite described in claim 1, it is characterized in that：Step（5）
The copper mold refers to：Size is 100mm × 50mm × 12mm, and copper mold is preheated to 120 ~ 150 DEG C in advance.
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| CN108237147B (en) * | 2017-12-26 | 2019-10-01 | 江苏大学 | The rolling mill practice of vehicle body in-situ nano particle enhanced aluminum-based composite material |
| CN108342606B (en) * | 2018-01-19 | 2020-01-24 | 江苏大学 | Method for improving in-situ aluminum matrix composite material structure and performance by mixing rare earth |
| CN111020300B (en) * | 2019-12-05 | 2021-09-10 | 江苏大学 | Preparation method of thermal cracking resistant binary nanoparticle reinforced aluminum matrix composite |
| CN114045407B (en) * | 2021-11-02 | 2022-06-21 | 山东博源精密机械有限公司 | Preparation method of microalloy aluminum for low-segregation-degree motor rotor of new energy automobile and microalloy aluminum prepared by preparation method |
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| JP2008285739A (en) * | 2007-05-21 | 2008-11-27 | Isuzu Motors Ltd | Method for producing particle-dispersed aluminum alloy composite material, and method for regulating its composition |
| CN105779915B (en) * | 2016-03-17 | 2018-04-24 | 江苏大学 | A kind of preparation method of high tough aluminum-base nano composite material |
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