CN109022840A - A kind of secondary aluminium alloy microstructures Control method - Google Patents
A kind of secondary aluminium alloy microstructures Control method Download PDFInfo
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- CN109022840A CN109022840A CN201810780660.4A CN201810780660A CN109022840A CN 109022840 A CN109022840 A CN 109022840A CN 201810780660 A CN201810780660 A CN 201810780660A CN 109022840 A CN109022840 A CN 109022840A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—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
- C22C21/00—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- 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
Abstract
The present invention principally falls into secondary metal technical field, and in particular to a kind of secondary aluminium alloy microstructures Control method.The method includes the removal of aluminium alloy melt gas and field trash, crystal grain refinement, Deformation structure's controls；Using the gas of blinster flotation method removal aluminium alloy melt, the field trash of filtration method removal aluminium alloy melt, addition alterant refining aluminum alloy ingot structure, extruding or rolling or forging control aluminium alloy extrusions tissue, reach the alloy product with good microscopic structure.The method of the invention degasification good impurity removing effect, hydrogen content is 0.02~0.26ml/100gAl after refining, and field trash is 0.4~0.7area% in metallographic visual field；Aluminium alloy as-cast structure average grain size is 25~50 μm, and the second phase is 10~100nm corynebacterium or elliptoid particle；Aluminium alloy Deformation structure grain aspect ratio is 10:1~100:1, and the second phase is 5~80nm corynebacterium or elliptoid particle.
Description
Technical field
The present invention principally falls into secondary metal technical field, and in particular to a kind of secondary aluminium alloy microstructures Control side
Method.
Background technique
Aluminium and aluminium alloy are widely used in each field with its excellent mechanical property, processing performance, can be recycled etc..
The waste product of leftover pieces, scrap and completion service life that the product manufacturing of aluminium and aluminium alloy generates is referred to as the miscellaneous aluminium that gives up, and wraps
Include technique leftover bits, scrap plane aluminium alloy, abandoned car aluminium alloy, aluminium scrap pop can, waste aluminium alloy door and window etc..With
The energy, resource and environmental problem become increasingly conspicuous, and the resource of miscellaneous aluminium of giving up and the value of environmental protection increasingly improve, and secondary aluminium industry is increasingly
The attention in the whole world is obtained, secondary aluminium yield keeps steady growth.According to statistics, China's secondary aluminium alloy yield by 2001 130
Ten thousand tons rise to 6,900,000 tons in 2017.Compared with primary aluminium, 95% energy can be saved by producing 1 ton of secondary aluminium, while can
Water-saving 10.05 tons, 11 tons of solid material are used less, emission reduction CO20.8 ton, SO20.6 ton, 1.5 tons of emission reduction red mud.Therefore, secondary aluminium
Alloy is with good economic efficiency and environmental benefit.
China's secondary aluminium alloy product faces the problems such as degradation uses, added value is not high, e.g., there is 700,000 tons of aluminium pot material every year
It is downgraded for door and window aluminium alloy, cast aluminium alloy gold, metallurgical reducing agent etc., resource value is greatly reduced.The reason is that the miscellaneous aluminium that gives up
Source is wide, impurity content is high, secondary aluminium alloy ingredient is difficult, and then influences the microscopic structure of alloy.Therefore, control secondary aluminium closes
Golden microscopic structure is to obtain the important measures of high-performance secondary aluminium alloy product.
For the microscopic structure for effectively controlling secondary aluminium alloy, aluminium alloy melt refinement and denaturation, machining deformation etc. are mainly used
Method.Chinese patent CN103146924A discloses multistage impurity removing refining method in a kind of secondary aluminium production process, this method from
The screening of preprocessing process, drying preheating remove dirt, corrosion, the grease of miscellaneous aluminium surface of giving up, then arrive melting, refining process, remove
The inserts in aluminium scrap part is removed, using rare-earth type alterant, can not only improve the mechanical property of aluminum melt, moreover it is possible to effectively purification
The effect of melt, while using the method control field trash and hydrogen content of refining agent and inert gas joint refining, make the miscellaneous aluminium that gives up
Purification is done step-by-step.But because using pure nitrogen gas, in melt, nitrogen and aluminium, which react, generates the folder that aluminium nitride forms disperse
Sundries；In addition, the microstructures Control method of undisclosed aluminium alloy, is not directed to wrought aluminium alloy.Chinese patent
CN106011479A discloses a kind of energy-efficient regeneration refinery practice of aluminium scrap, and the aluminium scrap including coming to recycling is tentatively divided
The place of picking melting, skims, fries the processing steps such as ash, which changes traditional Way of Remelting Scrap Aluminium processing method, using one-step method to aluminium scrap
It is recycled, aluminium slag is ground, is refined, reduce the content of aluminium in aluminium slag.But the invention is not disclosed aluminium alloy melt and removes
Gas removal of impurities, aluminium alloy cast ingot and profile microstructures Control method.Chinese patent CN101250653A discloses a kind of regeneration
The technique of alusil alloy coarse grain refinement, the invention are stirred using built-up gear blender, can be fully by semi solid aluminum silicon
Aluminium alloy high speed equably stirs, and makes large dendritic crystal is broken to be refined into normal tissue, regeneration alusil alloy semi solid slurry squeezes
Pressure refines regeneration alusil alloy crystal grain further under high pressure.The invention is not directed to Aluminum alloy modification processing, degasification removes
Miscellaneous, wrought aluminium alloy, alusil alloy crystal grain in process of setting are grown up.
To sum up, how secondary aluminium alloy production process avoids or reduces aluminium nitride and generates, high-efficiency degasification removal of impurities, goes bad and locate
Reason, and then optimize the microscopic structure of aluminium alloy cast ingot and profile, determine secondary aluminium alloy product quality.
Summary of the invention
For the problems such as content of secondary aluminium alloy gas and field trash is high, microscopic structure is undesirable, product quality is low, originally
Invention provides a kind of secondary aluminium alloy microstructures Control method, can control secondary aluminium alloy microstructure, eliminates gas
Hole, the defects of being mingled with.
The present invention is achieved by the following technical solutions:
A kind of secondary aluminium alloy microstructures Control method, the described method comprises the following steps:
(1) it using the miscellaneous aluminium that gives up as raw material, successively carries out melting, skim, composition adjustment, obtaining has target al alloy component
Aluminium alloy melt；
(2) aluminium alloy melt obtained to step (1) refines, and degasification is carried out in refining process and is added rotten
Agent, the secondary aluminium alloy melt after being refined；Wherein, using the gas of blinster flotation method removal aluminium alloy melt, addition becomes
Matter agent is to realize crystal grain refinement；
(3) by the secondary aluminium alloy melt filtration after refining, and it is cast into aluminium alloy billet；Wherein, the filtering is used for
Removal of inclusions；
(4) homogenization heat treatment is carried out to the aluminium alloy billet；
(5) after homogenization heat treatment, billet is squeezed or is rolled or is forged, target alloy product is obtained.
Further, step (1) specifically: using the miscellaneous aluminium that gives up as raw material, at 650~900 DEG C of smelting temperature, smelting time 30
Melting is carried out under conditions of~300min, the dross on aluminium alloy melt surface is removed, then by aluminium alloy melt composition adjustment
To target al alloy component, the aluminium alloy melt with target al alloy component is obtained.
Further, step (2) specifically: the aluminium alloy melt with target al alloy component is refined, is controlled
700~900 DEG C of refining temperature, 10~60min of refining time carry out degasification in refining process and add alterant, using gas
The gas for the method removal aluminium alloy melt that swims is steeped, the gas for degasification is N2With one kind or mixed gas of Ar, throughput 1
~15L/min, pressure are 0.12~0.50MPa, and the alterant used is one kind of Al-Ti-B, Al-Ti-C, Al-Ti-C-RE
Or more than one (element that wherein RE is represented is Rare Earths), the alterant additive amount are 0.5~3.5kg/t, refining
The hydrogen content of secondary aluminium alloy melt afterwards be 0.02~0.26ml/100gAl, in metallographic visual field field trash be 0.4~
0.7area% (area%, that is, area fraction).
Further, when the gas for degasification is N2When with the mixed gas of Ar, N2It is 5:1~1:5 with Ar volume ratio.
Further, step (3) specifically: using the field trash in ceramic filter plate removal aluminium alloy melt, ceramic mistake
The aperture of filter plate is 10~60 mesh；Aluminium alloy melt after filtering is cast into aluminium alloy billet, the casting of the aluminium alloy billet
State tissue average grain size is 25~50 μm, and the second phase is 10~100nm corynebacterium or elliptoid particle.
Further, in step (4), homogenization heat treatment actual conditions are as follows: the homogenization heat treatment 8 at 350~500 DEG C
~40h.
Further, in step (5), when using fashion of extrusion, extrudings temperature is room temperature~500 DEG C, extrusion ratio for 4~
40, extruded stock ingot speed degree is 0.1~5.0mm/s；Pass through the microstructural parameters for the target alloy product that fashion of extrusion obtains
Specifically: aluminium alloy Deformation structure grain aspect ratio is 20:1~100:1, and the second phase is 5~80nm corynebacterium or elliptoid
Particle.
Further, in step (5), when using rolling mode, rolling temperature is room temperature~500 DEG C, drafts is 5~
50%；Pass through the microstructural parameters for the target alloy product that rolling mode obtains specifically: aluminium alloy Deformation structure crystal grain
Draw ratio is 10:1~100:1, and the second phase is 5~80nm corynebacterium or elliptoid particle.
Further, in step (5), when using forging method, forging temperature is room temperature~500 DEG C, deflection 10
~50%；Pass through the microstructural parameters for the target alloy product that forging method obtains specifically: aluminium alloy Deformation structure is brilliant
Grain draw ratio is 10:1~100:1, and the second phase is 5~80nm corynebacterium or elliptoid particle.
Advantageous effects of the invention:
(1) the method for the invention is controlled by whole process, realizes regeneration cast aluminium alloy and regeneration wrought aluminium alloy
Microscopic structure be precisely controlled；
(2) Ar, N will be used in the method for the invention2- Ar mixed gas degasification can avoid or reduce aluminium nitride conjunction
At；
(3) the method for the invention effectively controls and reduces the hydrogen of secondary aluminium alloy melt and the content of field trash；
(4) the method for the invention effectively controls and optimizes secondary aluminium alloy as-cast structure and secondary aluminium alloy deformation group
It knits；
(5) the method for the invention realizes the high-valued recycling of miscellaneous aluminium of giving up.
Detailed description of the invention
Fig. 1 is a kind of process flow chart of secondary aluminium alloy microstructures Control method in the embodiment of the present invention.
Fig. 2 is to regenerate 2024 billet as-cast microstructures in the embodiment of the present invention.
Fig. 3 is to regenerate 7075 billet as-cast microstructures in the embodiment of the present invention.
Fig. 4 is to regenerate 2024 billet bar microscopic structures in the embodiment of the present invention.
Fig. 5 is to regenerate 7075 billet bar microscopic structures in the embodiment of the present invention.
Fig. 6 is to regenerate 7075 billet plate microscopic structures in the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is explained in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and
It is not used in the restriction present invention.
On the contrary, the present invention covers any substitution done on the essence and scope of the present invention being defined by the claims, repairs
Change, equivalent method and scheme.Further, in order to make the public have a better understanding the present invention, below to of the invention thin
It is detailed to describe some specific detail sections in section description.Part without these details for a person skilled in the art
The present invention can also be understood completely in description.
Embodiment 1:
The miscellaneous aluminium that gives up through 650 DEG C of melting 300min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 2024 al alloy components, then is refined.Refining includes degasification and goes bad, and 700 DEG C of refining temperature, essence
Refine time 60min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 5:1, is removed by blinster flotation method
Gas in melt, throughput 1L/min, pressure 0.12MPa；Add 0.5kg/t's in aluminium alloy melt after degasification
Al-Ti-B alterant refines crystal grain.Hydrogen content is 0.02ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 10 mesh filters removal of inclusions
Ingot, average grain size are 50 μm (see Fig. 2), and the second phase is 100nm corynebacterium or elliptoid particle.Billet is through 350 DEG C
It is squeezed after homogenization heat treatment 40h, squeezing temperature is 500 DEG C, extrusion ratio 4, and extruded stock ingot speed degree is 0.1mm/s, aluminium
Alloy deformation tissue grain aspect ratio is 20:1 (see Fig. 4), and the second phase is 80nm corynebacterium or elliptoid particle.
Wherein, in the present embodiment, leftover pieces, scrap and the completion that the product manufacturing of aluminium and aluminium alloy generates use
The waste product in time limit is referred to as the miscellaneous aluminium that gives up, including technique leftover bits, to scrap plane aluminium alloy, abandoned car aluminium alloy, aluminium scrap easy
Draw tank, waste aluminium alloy door and window etc..
Embodiment 2:
The miscellaneous aluminium that gives up through 700 DEG C of melting 250min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 2024 al alloy components, then is refined.Refining includes degasification and goes bad, and 750 DEG C of refining temperature, essence
Refine time 50min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 2:1, is removed by blinster flotation method
Gas in melt, throughput 3L/min, pressure 0.20MPa；Add 1.0kg/t's in aluminium alloy melt after degasification
Al-Ti-C alterant refines crystal grain.Hydrogen content is 0.05ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 20 mesh filters removal of inclusions
Ingot, average grain size are 45 μm, and the second phase is 80nm corynebacterium or elliptoid particle.Billet is through 450 DEG C of homogenization warm
Processing is rolled afterwards for 24 hours, and rolling temperature is 500 DEG C, drafts 5%, and aluminium alloy Deformation structure grain aspect ratio is 10:1,
Second phase is 70nm corynebacterium or elliptoid particle.
Embodiment 3:
The miscellaneous aluminium that gives up through 750 DEG C of melting 200min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 2024 al alloy components, then is refined.Refining includes degasification and goes bad, and 800 DEG C of refining temperature, essence
Refine time 40min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:1, is removed by blinster flotation method
Gas in melt, throughput 6L/min, pressure 0.25MPa；Add 1.5kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C refines crystal grain.Hydrogen content is 0.10ml/100gAl after refining, in metallographic visual field
Middle field trash is 0.5area%.Removal of inclusions is filtered through the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 30 mesh
After be cast into billet, average grain size is 40 μm, and the second phase is 60nm corynebacterium or elliptoid particle.Billet is through 500
It is forged after DEG C homogenization heat treatment 8h, forging temperature is 500 DEG C, and deflection 10%, aluminium alloy Deformation structure crystal grain is long
Diameter ratio is 10:1, and the second phase is 50nm corynebacterium or elliptoid particle.
Embodiment 4:
The miscellaneous aluminium that gives up through 800 DEG C of melting 150min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 3A21 al alloy component, then is refined.Refining includes degasification and goes bad, and 850 DEG C of refining temperature, essence
Refine time 30min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:2, is removed by blinster flotation method
Gas in melt, throughput 9L/min, pressure 0.30MPa；Add 2.0kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C-RE refines crystal grain.Hydrogen content is 0.15ml/100gAl after refining, is regarded in metallographic
Field trash is 0.6area% in.It is mingled with through the ceramic filter plate filtering removal that rotten aluminium alloy melt via hole diameter is 40 mesh
Billet is cast into after object, average grain size is 35 μm, and the second phase is 40nm corynebacterium or elliptoid particle.Billet warp
It is squeezed after 350 DEG C of homogenization heat treatment 40h, squeezing temperature is 450 DEG C, extrusion ratio 10, and extruded stock ingot speed degree is
1.0mm/s, aluminium alloy Deformation structure grain aspect ratio are 40:1, and the second phase is 30nm corynebacterium or elliptoid particle.
Embodiment 5:
The miscellaneous aluminium that gives up through 850 DEG C of melting 100min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 3A21 al alloy component, then is refined.Refining includes degasification and goes bad, and 900 DEG C of refining temperature, essence
Refine time 10min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:5, is removed by blinster flotation method
Gas in melt, throughput 12L/min, pressure 0.40MPa；Add 2.5kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C-RE refines crystal grain.Hydrogen content is 0.20ml/100gAl after refining, is regarded in metallographic
Field trash is 0.7area% in.It is mingled with through the ceramic filter plate filtering removal that rotten aluminium alloy melt via hole diameter is 50 mesh
Billet is cast into after object, average grain size is 30 μm, and the second phase is 20nm corynebacterium or elliptoid particle.Billet warp
450 DEG C of homogenization heat treatments are rolled afterwards for 24 hours, and rolling temperature is 450 DEG C, drafts 10, aluminium alloy Deformation structure crystal grain
Draw ratio is 40:1, and the second phase is 10nm corynebacterium or elliptoid particle.
Embodiment 6:
The miscellaneous aluminium that gives up through 900 DEG C of melting 30min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 3A21 al alloy component, then is refined.Refining includes degasification and goes bad, and 700 DEG C of refining temperature, essence
Refine time 60min.Pure Ar is passed through in aluminium alloy melt, the gas in melt is removed by blinster flotation method, throughput is
15L/min, pressure 0.50MPa；Add the Al-Ti-B's and Al-Ti-C-RE of 3.5kg/t in aluminium alloy melt after degasification
Alterant is mixed, crystal grain is refined.Hydrogen content is 0.26ml/100gAl after refining, and field trash is in metallographic visual field
0.7area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 60 mesh filters removal of inclusions
Ingot, average grain size are 25 μm, and the second phase is 10nm corynebacterium or elliptoid particle.Billet is through 500 DEG C of homogenization warm
It is forged after processing 8h, forging temperature is 450 DEG C, deflection 20%, and aluminium alloy Deformation structure grain aspect ratio is 30:1,
Second phase is 5nm corynebacterium or elliptoid particle.
Embodiment 7:
The miscellaneous aluminium that gives up through 650 DEG C of melting 300min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 4032 al alloy components, then is refined.Refining includes degasification and goes bad, and 750 DEG C of refining temperature, essence
Refine time 50min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 5:1, is removed by blinster flotation method
Gas in melt, throughput 1L/min, pressure 0.12MPa；Add 0.5kg/t's in aluminium alloy melt after degasification
Al-Ti-B alterant refines crystal grain.Hydrogen content is 0.02ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 10 mesh filters removal of inclusions
Ingot, average grain size are 50 μm, and the second phase is 100nm corynebacterium or elliptoid particle.Billet is through 350 DEG C of homogenization warm
It is squeezed after processing 40h, squeezing temperature is 400 DEG C, extrusion ratio 20, and extruded stock ingot speed degree is 2.0mm/s, aluminium alloy deformation
Tissue grain aspect ratio is 60:1, and the second phase is 80nm corynebacterium or elliptoid particle.
Embodiment 8:
The miscellaneous aluminium that gives up through 700 DEG C of melting 250min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 4032 al alloy components, then is refined.Refining includes degasification and goes bad, and 800 DEG C of refining temperature, essence
Refine time 40min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 2:1, is removed by blinster flotation method
Gas in melt, throughput 3L/min, pressure 0.20MPa；Add 1.0kg/t's in aluminium alloy melt after degasification
Al-Ti-C alterant refines crystal grain.Hydrogen content is 0.05ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 20 mesh filters removal of inclusions
Ingot, average grain size are 45 μm, and the second phase is 80nm corynebacterium or elliptoid particle.Billet is through 450 DEG C of homogenization warm
Processing is rolled afterwards for 24 hours, and rolling temperature is 400 DEG C, drafts 20, and aluminium alloy Deformation structure grain aspect ratio is 60:1,
Second phase is 70nm corynebacterium or elliptoid particle.
Embodiment 9:
The miscellaneous aluminium that gives up through 750 DEG C of melting 200min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 4032 al alloy components, then is refined.Refining includes degasification and goes bad, and 850 DEG C of refining temperature, essence
Refine time 30min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:1, is removed by blinster flotation method
Gas in melt, throughput 6L/min, pressure 0.25MPa；Add 1.5kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C refines crystal grain.Hydrogen content is 0.10ml/100gAl after refining, in metallographic visual field
Middle field trash is 0.5area%.Removal of inclusions is filtered through the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 30 mesh
After be cast into billet, average grain size is 40 μm, and the second phase is 60nm corynebacterium or elliptoid particle.Billet is through 500
It is forged after DEG C homogenization heat treatment 8h, forging temperature is 400 DEG C, and deflection 30%, aluminium alloy Deformation structure crystal grain is long
Diameter ratio is 50:1, and the second phase is 50nm corynebacterium or elliptoid particle.
Embodiment 10:
The miscellaneous aluminium that gives up through 800 DEG C of melting 150min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 5052 al alloy components, then is refined.Refining includes degasification and goes bad, and 900 DEG C of refining temperature, essence
Refine time 10min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:2, is removed by blinster flotation method
Gas in melt, throughput 9L/min, pressure 0.30MPa；Add 2.0kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C-RE refines crystal grain.Hydrogen content is 0.15ml/100gAl after refining, is regarded in metallographic
Field trash is 0.6area% in.It is mingled with through the ceramic filter plate filtering removal that rotten aluminium alloy melt via hole diameter is 40 mesh
Billet is cast into after object, average grain size is 35 μm, and the second phase is 40nm corynebacterium or elliptoid particle.Billet warp
It is squeezed after 350 DEG C of homogenization heat treatment 40h, squeezing temperature is 350 DEG C, extrusion ratio 30, and extruded stock ingot speed degree is
3.0mm/s, aluminium alloy Deformation structure grain aspect ratio are 80:1, and the second phase is 30nm corynebacterium or elliptoid particle.
Embodiment 11:
The miscellaneous aluminium that gives up through 850 DEG C of melting 100min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 5052 al alloy components, then is refined.Refining includes degasification and goes bad, and 700 DEG C of refining temperature, essence
Refine time 60min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:5, is removed by blinster flotation method
Gas in melt, throughput 12L/min, pressure 0.40MPa；Add 2.5kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C-RE refines crystal grain.Hydrogen content is 0.22ml/100gAl after refining, is regarded in metallographic
Field trash is 0.7area% in.It is mingled with through the ceramic filter plate filtering removal that rotten aluminium alloy melt via hole diameter is 50 mesh
Billet is cast into after object, average grain size is 30 μm, and the second phase is 20nm corynebacterium or elliptoid particle.Billet warp
400 DEG C of homogenization heat treatments are forged afterwards for 24 hours, and forging temperature is 350 DEG C, deflection 30%, and aluminium alloy Deformation structure is brilliant
Grain draw ratio is 80:1, and the second phase is 10nm corynebacterium or elliptoid particle.
Embodiment 12:
The miscellaneous aluminium that gives up through 900 DEG C of melting 30min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 5052 al alloy components, then is refined.Refining includes degasification and goes bad, and 750 DEG C of refining temperature, essence
Refine time 70min.Pure Ar is passed through in aluminium alloy melt, the gas in melt is removed by blinster flotation method, throughput is
15L/min, pressure 0.50MPa；Add the Al-Ti-B's and Al-Ti-C-RE of 3.5kg/t in aluminium alloy melt after degasification
Alterant is mixed, crystal grain is refined.Hydrogen content is 0.24ml/100gAl, and field trash is 0.7area% in metallographic visual field.Through becoming
The aluminium alloy melt via hole diameter of matter is to be cast into billet, average crystal grain ruler after the ceramic filter plate of 60 mesh filters removal of inclusions
Very little is 25 μm, and the second phase is 10nm corynebacterium or elliptoid particle.Billet is forged after 450 DEG C of homogenization are heat-treated 10h
It makes, forging temperature is 350 DEG C, deflection 40%, and aluminium alloy Deformation structure grain aspect ratio is 80:1, and the second phase is that 5nm is short
Rodlike or elliptoid particle.
Embodiment 13:
The miscellaneous aluminium that gives up through 650 DEG C of melting 300min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 6063 al alloy components, then is refined.Refining includes degasification and goes bad, and 800 DEG C of refining temperature, essence
Refine time 40min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 5:1, is removed by blinster flotation method
Gas in melt, throughput 1L/min, pressure 0.12MPa；Add 0.5kg/t's in aluminium alloy melt after degasification
Al-Ti-B alterant refines crystal grain.Hydrogen content is 0.02ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 10 mesh filters removal of inclusions
Ingot, average grain size are 50 μm, and the second phase is 100nm corynebacterium or elliptoid particle.Billet is through 350 DEG C of homogenization warm
It is squeezed after processing 40h, extruding temperature is room temperature, and extrusion ratio 40, extruded stock ingot speed degree is 4.0mm/s, aluminium alloy deformation
Tissue grain aspect ratio is 100:1, and the second phase is 80nm corynebacterium or elliptoid particle.
Embodiment 14:
The miscellaneous aluminium that gives up through 700 DEG C of melting 250min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 6063 al alloy components, then is refined.Refining includes degasification and goes bad, and 850 DEG C of refining temperature, essence
Refine time 30min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 2:1, is removed by blinster flotation method
Gas in melt, throughput 3L/min, pressure 0.20MPa；Add 1.0kg/t's in aluminium alloy melt after degasification
Al-Ti-C alterant refines crystal grain.Hydrogen content is 0.05ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 20 mesh filters removal of inclusions
Ingot, average grain size are 45 μm, and the second phase is 80nm corynebacterium or elliptoid particle.Billet is through 400 DEG C of homogenization warm
Processing is rolled afterwards for 24 hours, and rolling temperature is room temperature, and drafts 40, aluminium alloy Deformation structure grain aspect ratio is 90:1, the
Two-phase is 70nm corynebacterium or elliptoid particle.
Embodiment 15:
The miscellaneous aluminium that gives up through 750 DEG C of melting 200min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 6063 al alloy components, then is refined.Refining includes degasification and goes bad, and 900 DEG C of refining temperature, essence
Refine time 20min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:1, is removed by blinster flotation method
Gas in melt, throughput 6L/min, pressure 0.25MPa；Add 1.5kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C refines crystal grain.Hydrogen content is 0.10ml/100gAl after refining, in metallographic visual field
Middle field trash is 0.5area%.Removal of inclusions is filtered through the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 30 mesh
After be cast into billet, average grain size is 40 μm, and the second phase is 60nm corynebacterium or elliptoid particle.Billet is through 450
It is forged after DEG C homogenization heat treatment 10h, forging temperature is room temperature, deflection 50%, and aluminium alloy Deformation structure crystal grain is long
Diameter ratio is 100:1, and the second phase is 50nm corynebacterium or elliptoid particle.
Embodiment 16:
The miscellaneous aluminium that gives up through 800 DEG C of melting 150min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 7075 al alloy components, then is refined.Refining includes degasification and goes bad, and 700 DEG C of refining temperature, essence
Refine time 60min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:2, is removed by blinster flotation method
Gas in melt, throughput 9L/min, pressure 0.30MPa；Add 2.0kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C-RE refines crystal grain.Hydrogen content is 0.15ml/100gAl after refining, is regarded in metallographic
Field trash is 0.6area% in.It is mingled with through the ceramic filter plate filtering removal that rotten aluminium alloy melt via hole diameter is 40 mesh
Billet is cast into after object, average grain size is 35 μm (see Fig. 3), and the second phase is 40nm corynebacterium or elliptoid particle.
Billet is squeezed after 350 DEG C of homogenization are heat-treated 40h, and squeezing temperature is 430 DEG C, extrusion ratio 40, extruded stock ingot speed degree
For 5.0mm/s, aluminium alloy Deformation structure grain aspect ratio is 80:1 (see Fig. 5), and the second phase is 30nm corynebacterium or elliptoid
Particle.
Embodiment 17:
The miscellaneous aluminium that gives up through 850 DEG C of melting 100min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 7075 al alloy components, then is refined.Refining includes degasification and goes bad, and 750 DEG C of refining temperature, essence
Refine time 50min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:5, is removed by blinster flotation method
Gas in melt, throughput 12L/min, pressure 0.40MPa；Add 2.5kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C-RE refines crystal grain.Hydrogen content is 0.18ml/100gAl after refining, is regarded in metallographic
Field trash is 0.7area% in.It is mingled with through the ceramic filter plate filtering removal that rotten aluminium alloy melt via hole diameter is 50 mesh
Billet is cast into after object, average grain size is 35 μm, and the second phase is 20nm corynebacterium or elliptoid particle.Billet warp
400 DEG C of homogenization heat treatments are rolled afterwards for 24 hours, and rolling temperature is 430 DEG C, drafts 50, aluminium alloy Deformation structure crystal grain
Draw ratio is 100:1, and the second phase is 10nm corynebacterium or elliptoid particle.
Embodiment 18:
The miscellaneous aluminium that gives up through 800 DEG C of melting 150min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 7075 al alloy components, then is refined.Refining includes degasification and goes bad, and 700 DEG C of refining temperature, essence
Refine time 60min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:2, is removed by blinster flotation method
Gas in melt, throughput 9L/min, pressure 0.30MPa；Add 2.0kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C-RE refines crystal grain.Hydrogen content is 0.15ml/100gAl after refining, is regarded in metallographic
Field trash is 0.6area% in.It is mingled with through the ceramic filter plate filtering removal that rotten aluminium alloy melt via hole diameter is 40 mesh
Billet is cast into after object, average grain size is 35 μm (see Fig. 3), and the second phase is 40nm corynebacterium or elliptoid particle.
Billet is squeezed after 400 DEG C of homogenization heat treatment for 24 hours, and squeezing temperature is 400 DEG C, extrusion ratio 20, extruded stock ingot speed degree
For 2.0mm/s, aluminium alloy Deformation structure grain aspect ratio is 50:1 (see Fig. 6), and the second phase is 30nm corynebacterium or elliptoid
Particle.
Embodiment 19:
The miscellaneous aluminium that gives up through 900 DEG C of melting 30min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to 7075 al alloy components, then is refined.Refining includes degasification and goes bad, and 850 DEG C of refining temperature, essence
Refine time 30min.Pure Ar is passed through in aluminium alloy melt, the gas in melt is removed by blinster flotation method, throughput is
15L/min, pressure 0.50MPa；Add the Al-Ti-B's and Al-Ti-C-RE of 3.5kg/t in aluminium alloy melt after degasification
Alterant is mixed, crystal grain is refined.Hydrogen content is 0.20ml/100gAl after refining, and field trash is in metallographic visual field
0.7area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 60 mesh filters removal of inclusions
Ingot, average grain size are 25 μm, and the second phase is 10nm corynebacterium or elliptoid particle.Billet is through 450 DEG C of homogenization warm
It is forged after processing 10h, forging temperature is 430 DEG C, and deflection 10%, aluminium alloy Deformation structure grain aspect ratio is 20:
1, the second phase is 5nm corynebacterium or elliptoid particle.
Embodiment 20:
The miscellaneous aluminium that gives up through 650 DEG C of melting 300min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL102 al alloy component, then is refined.Refining includes degasification and goes bad, and 900 DEG C of refining temperature,
Refining time 10min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 5:1, is gone by blinster flotation method
Except the gas in melt, throughput 1L/min, pressure 0.12MPa；Add 0.5kg/t's in aluminium alloy melt after degasification
Al-Ti-B alterant refines crystal grain.Hydrogen content is 0.02ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 10 mesh filters removal of inclusions
Ingot, average grain size are 50 μm, and the second phase is 100nm corynebacterium or elliptoid particle.
Embodiment 21:
The miscellaneous aluminium that gives up through 700 DEG C of melting 250min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL102 al alloy component, then is refined.Refining includes degasification and goes bad, and 700 DEG C of refining temperature,
Refining time 60min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 2:1, is gone by blinster flotation method
Except the gas in melt, throughput 3L/min, pressure 0.20MPa；Add 1.0kg/t's in aluminium alloy melt after degasification
Al-Ti-C alterant refines crystal grain.Hydrogen content is 0.05ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 20 mesh filters removal of inclusions
Ingot, average grain size are 45 μm, and the second phase is 80nm corynebacterium or elliptoid particle.
Embodiment 22:
The miscellaneous aluminium that gives up through 750 DEG C of melting 200min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL102 al alloy component, then is refined.Refining includes degasification and goes bad, and 750 DEG C of refining temperature,
Refining time 50min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:1, is gone by blinster flotation method
Except the gas in melt, throughput 6L/min, pressure 0.25MPa；Add 1.5kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C refines crystal grain.Hydrogen content is 0.10ml/100gAl after refining, in metallographic visual field
Middle field trash is 0.5area%.Removal of inclusions is filtered through the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 30 mesh
After be cast into billet, average grain size is 40 μm, and the second phase is 60nm corynebacterium or elliptoid particle.
Embodiment 23:
The miscellaneous aluminium that gives up through 800 DEG C of melting 150min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL103 al alloy component, then is refined.Refining includes degasification and goes bad, and 800 DEG C of refining temperature,
Refining time 40min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:2, is gone by blinster flotation method
Except the gas in melt, throughput 9L/min, pressure 0.30MPa；Add 2.0kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C-RE refines crystal grain.Hydrogen content is 0.15ml/100gAl after refining, is regarded in metallographic
Field trash is 0.6area% in.It is mingled with through the ceramic filter plate filtering removal that rotten aluminium alloy melt via hole diameter is 40 mesh
Billet is cast into after object, average grain size is 35 μm, and the second phase is 40nm corynebacterium or elliptoid particle.
Embodiment 24:
The miscellaneous aluminium that gives up through 850 DEG C of melting 100min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL103 al alloy component, then is refined.Refining includes degasification and goes bad, and 850 DEG C of refining temperature,
Refining time 30min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:5, is gone by blinster flotation method
Except the gas in melt, throughput 12L/min, pressure 0.40MPa；2.5kg/t is added in aluminium alloy melt after degasification
Al-Ti-B and Al-Ti-C-RE mixing alterant, refine crystal grain.Hydrogen content is 0.23ml/100gAl after refining, in metallographic
Field trash is 0.7area% in visual field.Through the ceramic filter plate filtering removal folder that rotten aluminium alloy melt via hole diameter is 50 mesh
Billet is cast into after sundries, average grain size is 30 μm, and the second phase is 20nm corynebacterium or elliptoid particle.
Embodiment 25:
The miscellaneous aluminium that gives up through 900 DEG C of melting 30min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL103 al alloy component, then is refined.Refining includes degasification and goes bad, and 900 DEG C of refining temperature,
Refining time 20min.Pure Ar is passed through in aluminium alloy melt, the gas in melt is removed by blinster flotation method, throughput is
15L/min, pressure 0.50MPa；Add the Al-Ti-B's and Al-Ti-C-RE of 3.5kg/t in aluminium alloy melt after degasification
Alterant is mixed, crystal grain is refined.Hydrogen content is 0.25ml/100gAl after refining, and field trash is in metallographic visual field
0.7area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 60 mesh filters removal of inclusions
Ingot, average grain size are 25 μm, and the second phase is 10nm corynebacterium or elliptoid particle.
Embodiment 26:
The miscellaneous aluminium that gives up through 650 DEG C of melting 300min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL107 al alloy component, then is refined.Refining includes degasification and goes bad, and 700 DEG C of refining temperature,
Refining time 60min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 5:1, is gone by blinster flotation method
Except the gas in melt, throughput 1L/min, pressure 0.12MPa；Add 0.5kg/t's in aluminium alloy melt after degasification
Al-Ti-B alterant refines crystal grain.Hydrogen content is 0.02ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 10 mesh filters removal of inclusions
Ingot, average grain size are 50 μm, and the second phase is 100nm corynebacterium or elliptoid particle.
Embodiment 27:
The miscellaneous aluminium that gives up through 700 DEG C of melting 250min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL107 al alloy component, then is refined.Refining includes degasification and goes bad, and 750 DEG C of refining temperature,
Refining time 50min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 2:1, is gone by blinster flotation method
Except the gas in melt, throughput 3L/min, pressure 0.20MPa；Add 1.0kg/t's in aluminium alloy melt after degasification
Al-Ti-C alterant refines crystal grain.Hydrogen content is 0.05ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 20 mesh filters removal of inclusions
Ingot, average grain size are 45 μm, and the second phase is 80nm corynebacterium or elliptoid particle.
Embodiment 28:
The miscellaneous aluminium that gives up through 750 DEG C of melting 200min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL107 al alloy component, then is refined.Refining includes degasification and goes bad, and 800 DEG C of refining temperature,
Refining time 40min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:1, is gone by blinster flotation method
Except the gas in melt, throughput 6L/min, pressure 0.25MPa；Add 1.5kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C refines crystal grain.Hydrogen content is 0.10ml/100gAl after refining, in metallographic visual field
Middle field trash is 0.5area%.Removal of inclusions is filtered through the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 30 mesh
After be cast into billet, average grain size is 40 μm, and the second phase is 60nm corynebacterium or elliptoid particle.
Embodiment 29:
The miscellaneous aluminium that gives up through 800 DEG C of melting 150min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL110 al alloy component, then is refined.Refining includes degasification and goes bad, and 850 DEG C of refining temperature,
Refining time 30min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:2, is gone by blinster flotation method
Except the gas in melt, throughput 9L/min, pressure 0.30MPa；Add 2.0kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C-RE refines crystal grain.Hydrogen content is 0.15ml/100gAl after refining, is regarded in metallographic
Field trash is 0.6area% in.It is mingled with through the ceramic filter plate filtering removal that rotten aluminium alloy melt via hole diameter is 40 mesh
Billet is cast into after object, average grain size is 35 μm, and the second phase is 40nm corynebacterium or elliptoid particle.
Embodiment 30:
The miscellaneous aluminium that gives up through 850 DEG C of melting 100min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL110 al alloy component, then is refined.Refining includes degasification and goes bad, and 900 DEG C of refining temperature,
Refining time 10min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:5, is gone by blinster flotation method
Except the gas in melt, throughput 12L/min, pressure 0.40MPa；2.5kg/t is added in aluminium alloy melt after degasification
Al-Ti-B and Al-Ti-C-RE mixing alterant, refine crystal grain.Hydrogen content is 0.18ml/100gAl after refining, in metallographic
Field trash is 0.7area% in visual field.Through the ceramic filter plate filtering removal folder that rotten aluminium alloy melt via hole diameter is 50 mesh
Billet is cast into after sundries, average grain size is 30 μm, and the second phase is 20nm corynebacterium or elliptoid particle.
Embodiment 31:
The miscellaneous aluminium that gives up through 900 DEG C of melting 30min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL110 al alloy component, then is refined.Refining includes degasification and goes bad, and 700 DEG C of refining temperature,
Refining time 60min.Pure Ar is passed through in aluminium alloy melt, the gas in melt is removed by blinster flotation method, throughput is
15L/min, pressure 0.50MPa；Add the Al-Ti-B's and Al-Ti-C-RE of 3.5kg/t in aluminium alloy melt after degasification
Alterant is mixed, crystal grain is refined.Hydrogen content is 0.20ml/100gAl after refining, and field trash is in metallographic visual field
0.7area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 60 mesh filters removal of inclusions
Ingot, average grain size are 25 μm, and the second phase is 10nm corynebacterium or elliptoid particle.
Embodiment 32:
The miscellaneous aluminium that gives up through 650 DEG C of melting 300min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL104 al alloy component, then is refined.Refining includes degasification and goes bad, and 750 DEG C of refining temperature,
Refining time 50min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 5:1, is gone by blinster flotation method
Except the gas in melt, throughput 1L/min, pressure 0.12MPa；Add 0.5kg/t's in aluminium alloy melt after degasification
Al-Ti-B alterant refines crystal grain.Hydrogen content is 0.02ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 10 mesh filters removal of inclusions
Ingot, average grain size are 50 μm, and the second phase is 100nm corynebacterium or elliptoid particle.
Embodiment 33:
The miscellaneous aluminium that gives up through 700 DEG C of melting 250min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL104 al alloy component, then is refined.Refining includes degasification and goes bad, and 800 DEG C of refining temperature,
Refining time 40min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 2:1, is gone by blinster flotation method
Except the gas in melt, throughput 3L/min, pressure 0.20MPa；Add 1.0kg/t's in aluminium alloy melt after degasification
Al-Ti-C alterant refines crystal grain.Hydrogen content is 0.05ml/100gAl after refining, and field trash is in metallographic visual field
0.4area%.Base is cast into after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 20 mesh filters removal of inclusions
Ingot, average grain size are 45 μm, and the second phase is 80nm corynebacterium or elliptoid particle.
Embodiment 34:
The miscellaneous aluminium that gives up through 750 DEG C of melting 200min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL104 al alloy component, then is refined.Refining includes degasification and goes bad, and 850 DEG C of refining temperature,
Refining time 30min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:1, is gone by blinster flotation method
Except the gas in melt, throughput 6L/min, pressure 0.25MPa；Add 1.5kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C refines crystal grain.Hydrogen content is 0.10ml/100gAl after refining, in metallographic visual field
Middle field trash is 0.5area%.Removal of inclusions is filtered through the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 30 mesh
After be cast into billet, average grain size is 40 μm, and the second phase is 60nm corynebacterium or elliptoid particle.
Embodiment 35:
The miscellaneous aluminium that gives up through 800 DEG C of melting 150min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL305 al alloy component, then is refined.Refining includes degasification and goes bad, and 900 DEG C of refining temperature,
Refining time 20min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:2, is gone by blinster flotation method
Except the gas in melt, throughput 9L/min, pressure 0.30MPa；Add 2.0kg/t's in aluminium alloy melt after degasification
The mixing alterant of Al-Ti-B and Al-Ti-C-RE refines crystal grain.Hydrogen content is 0.15ml/100gAl after refining, is regarded in metallographic
Field trash is 0.6area% in.It is mingled with through the ceramic filter plate filtering removal that rotten aluminium alloy melt via hole diameter is 40 mesh
Billet is cast into after object, average grain size is 35 μm, and the second phase is 40nm corynebacterium or elliptoid particle.
Embodiment 36:
The miscellaneous aluminium that gives up through 850 DEG C of melting 100min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL305 al alloy component, then is refined.Refining includes degasification and goes bad, and 850 DEG C of refining temperature,
Refining time 30min.By N2It is passed through in aluminium alloy melt with Ar volume ratio for the mixed gas of 1:5, is gone by blinster flotation method
Except the gas in melt, throughput 12L/min, pressure 0.40MPa；2.5kg/t is added in aluminium alloy melt after degasification
Al-Ti-B and Al-Ti-C-RE mixing alterant, refine crystal grain.Hydrogen content is 0.18ml/100gAl after refining, in metallographic
Field trash is 0.7area% in visual field.Through the ceramic filter plate filtering removal folder that rotten aluminium alloy melt via hole diameter is 50 mesh
Billet is cast into after sundries, average grain size is 30 μm, and the second phase is 20nm corynebacterium or elliptoid particle.
Embodiment 37:
The miscellaneous aluminium that gives up through 900 DEG C of melting 30min obtains aluminium alloy melt, removes the dross on its surface, then molten to aluminium alloy
The online composition adjustment of body is to ZL305 al alloy component, then is refined.Refining includes degasification and goes bad, and 800 DEG C of refining temperature,
Refining time 40min.Pure Ar is passed through in aluminium alloy melt, the gas in melt is removed by blinster flotation method, throughput is
15L/min, pressure 0.50MPa；The mixed of the Al-Ti-B and Al-Ti-C-RE of 35kg/t is added in aluminium alloy melt after degasification
Alterant is closed, crystal grain is refined.Hydrogen content is 0.20ml/100gAl after refining, and field trash is 0.7area% in metallographic visual field.
It is cast into billet after the ceramic filter plate that rotten aluminium alloy melt via hole diameter is 60 mesh filters removal of inclusions, average crystalline substance
Particle size is 25 μm, and the second phase is 10nm corynebacterium or elliptoid particle.
To sum up, the present invention provides a kind of aluminium alloy micostructure control methods prepared using the miscellaneous aluminium that gives up as raw material, including
The removal of aluminium alloy melt gas and field trash, crystal grain refinement, the method for Deformation structure's control.Aluminium is removed using blinster flotation method
The gas of alloy melt, the field trash of filtration method removal aluminium alloy melt, addition alterant refining aluminum alloy ingot structure, extruding
Or rolling or forging control aluminium alloy extrusions tissue, reach the alloy product with good microscopic structure.Side of the present invention
Method degasification good impurity removing effect, after refining hydrogen content be 0.02~0.26ml/100gAl, in metallographic visual field field trash be 0.4~
0.7area%；Aluminium alloy as-cast structure average grain size is 25~50 μm, and the second phase is 10~100nm corynebacterium or ellipse
The particle of shape；Aluminium alloy Deformation structure grain aspect ratio is 10:1~100:1, and the second phase is 5~80nm corynebacterium or ellipticity
Particle.The defects of present invention can control secondary aluminium alloy microstructure, eliminate stomata, be mingled with.
Claims (9)
1. a kind of secondary aluminium alloy microstructures Control method, which is characterized in that the described method comprises the following steps:
(1) it using the miscellaneous aluminium that gives up as raw material, successively carries out melting, skim, composition adjustment, obtaining, there is the aluminium of target al alloy component to close
Golden melt；
(2) aluminium alloy melt obtained to step (1) refines, and degasification is carried out in refining process and adds alterant, is obtained
Secondary aluminium alloy melt after must refining；Wherein, using blinster flotation method removal aluminium alloy melt gas, add alterant with
Realize crystal grain refinement；
(3) by the secondary aluminium alloy melt filtration after refining, and it is cast into aluminium alloy billet；Wherein, the filtering is for removing
Field trash；
(4) homogenization heat treatment is carried out to the aluminium alloy billet；
(5) after homogenization heat treatment, billet is squeezed or is rolled or is forged, target alloy product is obtained.
2. a kind of secondary aluminium alloy microstructures Control method according to claim 1, which is characterized in that step (1) is specific
Are as follows: using the miscellaneous aluminium that gives up as raw material, melting is carried out under conditions of 650~900 DEG C of smelting temperature, 30~300min of smelting time, it will
The dross on aluminium alloy melt surface removes, and then by aluminium alloy melt composition adjustment to target al alloy component, obtaining has mesh
Mark the aluminium alloy melt of al alloy component.
3. a kind of secondary aluminium alloy microstructures Control method according to claim 1, which is characterized in that step (2) is specific
Are as follows: the aluminium alloy melt with target al alloy component is refined, 700~900 DEG C of refining temperature, refining time 10 are controlled
~60min is carried out degasification in refining process and adds alterant, the gas of aluminium alloy melt is removed using blinster flotation method,
Gas for degasification is N2With one kind or mixed gas of Ar, throughput be 1~15L/min, pressure be 0.12~
0.50MPa, for the one or more of Al-Ti-B, Al-Ti-C, Al-Ti-C-RE, the alterant adds the alterant used
Dosage is 0.5~3.5kg/t, and the hydrogen content of the secondary aluminium alloy melt after refining is 0.02~0.26ml/100gAl, in metallographic
Field trash is 0.4~0.7area% in visual field.
4. a kind of secondary aluminium alloy microstructures Control method according to claim 3, which is characterized in that when for degasification
Gas is N2When with the mixed gas of Ar, N2It is 5:1~1:5 with Ar volume ratio.
5. a kind of secondary aluminium alloy microstructures Control method according to claim 1, which is characterized in that step (3) is specific
Are as follows: using the field trash in ceramic filter plate removal aluminium alloy melt, the aperture of ceramic filter plate is 10~60 mesh；After filtering
Aluminium alloy melt be cast into aluminium alloy billet, the aluminium alloy billet as-cast structure average grain size is 25~50 μm, the
Two-phase is 10~100nm corynebacterium or elliptoid particle.
6. a kind of secondary aluminium alloy microstructures Control method according to claim 1, which is characterized in that in step (4),
Homogenize heat treatment actual conditions are as follows: 8~40h of homogenization heat treatment at 350~500 DEG C.
7. a kind of secondary aluminium alloy microstructures Control method according to claim 1, which is characterized in that in step (5), when
When using fashion of extrusion, extruding temperature is room temperature~500 DEG C, and extrusion ratio is 4~40, and extruded stock ingot speed degree is 0.1~5.0mm/
s；Pass through the microstructural parameters for the target alloy product that fashion of extrusion obtains specifically: aluminium alloy Deformation structure grain aspect
Than for 20:1~100:1, the second phase is 5~80nm corynebacterium or elliptoid particle.
8. a kind of secondary aluminium alloy microstructures Control method according to claim 1, which is characterized in that in step (5), when
When using rolling mode, rolling temperature is room temperature~500 DEG C, and drafts is 5~50%；The target aluminium obtained by rolling mode
The microstructural parameters of alloy product specifically: aluminium alloy Deformation structure grain aspect ratio is 10:1~100:1, and the second phase is 5
~80nm corynebacterium or elliptoid particle.
9. a kind of secondary aluminium alloy microstructures Control method according to claim 1, which is characterized in that in step (5), when
When using forging method, forging temperature is room temperature~500 DEG C, and deflection is 10~50%；The target obtained by forging method
The microstructural parameters of alloy product specifically: aluminium alloy Deformation structure grain aspect ratio is 10:1~100:1, and the second phase is
5~80nm corynebacterium or elliptoid particle.
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| US16/246,991 US20190144972A1 (en) | 2018-07-17 | 2019-01-14 | Method for controlling microstructure of recycled aluminum alloy |
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