CN110218916A - A kind of high-tensile tire bell aluminium alloy ingots and its production technology - Google Patents
A kind of high-tensile tire bell aluminium alloy ingots and its production technology Download PDFInfo
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- CN110218916A CN110218916A CN201910458784.5A CN201910458784A CN110218916A CN 110218916 A CN110218916 A CN 110218916A CN 201910458784 A CN201910458784 A CN 201910458784A CN 110218916 A CN110218916 A CN 110218916A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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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
- C22F1/047—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 magnesium as the next major constituent
Abstract
The invention discloses a kind of high-tensile tire bell aluminium alloy ingots and its production technologies, belong to aluminium alloy manufacture field.Its component and each component percentage are as follows: Mg1.2-1.9%, Ni1.1-1.7%, Si0.4-1.6%, Fe0.4-0.7%, Ti0.25-0.44%, Y0.13-0.27%, Zn0.09-0.25%, Gd0.08-0.14%, Er0.06-0.09%, Ce0.03-0.08%, other metals and nonmetallic impurity element total amount are no more than 0.5%, remaining is Al；Tensile property is good at high temperature, toughness is big for aluminium alloy ingots of the invention, adds rare earth Gd, Y, Er, Ce in right amount, can increase thermal diffusivity, intensity and the durability of tire bell.Aluminium alloy ingots is prepared by processing steps such as thawing-refining-standing-ingot casting-annealings；Production technology through the invention, the cast sturcture of aluminium alloy ingots is unified, not oxidizable, substantially increases the service life of aluminium alloy tire bell, the technology aluminium alloy make base bell it is universal on have extensive market prospects.
Description
Technical field
The present invention relates to aluminium alloy manufacture fields, more particularly to a kind of high-tensile tire bell aluminium alloy ingots and its life
Production. art.
Background technique
Tire bell is the important building block of wheel, and tire bell often uses under complicated and exacting terms, it holds in motion
By the effect of various modifications, load forces, so palpus load-carrying properties with higher, mechanical performance, existing tire bell, which exists, to be dissipated
The disadvantages of hot poor, poor toughness, poor durability, is unfavorable for safe, the comfortable traveling of automobile.Requirement to wheel is that size
With form accuracy height, light weight, good dynamic balance, fatigue strength height, beauty etc., tire bell is as the important portion in running car system
One of part, and a kind of more demanding security personnel's part, the weight of its not only bearing automobile, while the appearance for also embodying automobile is made
Type.
The processing method of existing aluminium alloy tire bell has: casting and forming, the molten refined of aluminium ingot and machining.However molten aluminum
Quality after molten refined determines the quality of resulting aluminium alloy tire bell, the main element and aluminium by adding of the quality of molten aluminum
The content of field trash is determined in liquid.The resulting end properties of other elements are added in existing molten aluminum deposits mechanicalness at high temperature
Can the not ideal enough and insufficient defect of durability, wherein the inclusion content of molten aluminum is generally higher, directly affects aluminium alloy tire
The quality of bell causes the qualification rate of aluminium alloy tire bell to decline, and then increases the production cost of enterprise.
The disclosure of background above technology contents is only used for auxiliary and understands inventive concept and technical solution of the invention, not
The prior art for necessarily belonging to present patent application shows above content in the applying date of present patent application in no tangible proof
In the case where having disclosed, above-mentioned background technique should not be taken to the novelty and creativeness of evaluation the application.
Summary of the invention
It is existing to solve it is an object of that present invention to provide a kind of high-tensile tire bell aluminium alloy ingots and its production technology
Tensile property, toughness and the service life of aluminium alloy ingots existing for technology at high temperature not high technical problem.
For this purpose, the present invention proposes following scheme:
A kind of high-tensile tire bell aluminium alloy ingots, component and each component percentage are as follows: Mg1.2-1.9%,
Ni1.1-1.7%, Si0.4-1.6%, Fe0.4-0.7%, Ti0.25-0.44%, Y0.13-0.27%, Zn0.09-0.25%,
Gd0.08-0.14%, Er0.06-0.09%, Ce0.03-0.08%, other metals and nonmetallic impurity element total amount do not surpass
0.5% is crossed, remaining is Al.
Preferably, component and each component percentage are as follows: Mg1.5%, Ni1.4%, Si1.1%, Fe0.6%,
Ti0.37%, Y0.18%, Zn0.16%, Gd0.11%, Er0.07%, Ce0.05%, other metals and nonmetallic impurity member
Plain total amount is no more than 0.5%, remaining is Al.
Preferably, aluminium used is fine aluminium, purity 99.7%.
A kind of high-tensile tire bell aluminium alloy ingots preparation method, comprising the following steps:
S1: fusing: first fine aluminium, pure magnesium, alusil alloy being added in smelting furnace, are heated to 705-730 DEG C and stir to make to close
Gold is completely melt, alumel, alumin(i)um zinc alloy, ferroaluminium and aluminum titanium alloy is then added, is continuously heating to 735-755 DEG C,
Molten aluminium alloy is obtained after alloying element all fusing, molten metal is stirred and shaken with graphite rod, the gas in molten metal is discharged；
S2: refining: the temperature of molten aluminium alloy is adjusted to 710-725 DEG C, is sprayed into refining agent and is carried out refining treatment, refining
5-10min is stood after the completion, the surface slag of molten aluminium alloy is clawed, then heats to 740-760 DEG C, and fining agent, aluminium is added
Cerium alloy, yttrium-magnesium alloy, aluminium gadpolinium alloy and Al-Er alloy, are passed through argon gas and are refined, pressure control is in 0.45Mpa-
0.55Mpa, degasification time are 8-11min, and degasification, which finishes, examines molten aluminium alloy ingredient, are taken off for the second time after passing the inspection
Slag completes refining process；
S3: it stands: the molten aluminium alloy after refining being stood, is down to 680-700 DEG C to molten aluminium alloy temperature；
S4: ingot casting: in casting process, casting speed 55-60mm/min, water pressure of cooling water control is 0.12-
0.17MPa is finally cast as the aluminium alloy ingots of diameter and high respectively 45-55cm, 25-30cm；
S5: annealing: the aluminium alloy ingots after casting is made annealing treatment, aluminium alloy ingots finished product is obtained.
Preferably, the temperature of molten aluminium alloy is adjusted to 749 DEG C of progress refining treatments in step S2.
Preferably, the quality that refining agent is added in step S2 is 0.32% of aluminum alloy melt weight in furnace,
Preferably, in step S2 by pressure control in 0.51Mpa.
Preferably, casting speed is 58mm/min in step S4.
Preferably, water pressure of cooling water control is 0.14MPa in step S4.
Preferably, annealing process step described in step S5 are as follows: first aluminium alloy ingots is put into Heat Treatment Furnace, is warming up to
535 DEG C of heat preservation 60min；Be cooled to 510 DEG C of heat preservation 80min again, be finally cooled to 455 DEG C of heat preservation 12h, finally enable aluminum alloy to ingot with
Furnace is cooling.
The beneficial effect of the present invention compared with the prior art includes:
1. as shown in Table 1, the data of embodiment 1-3 are superior to the data of comparative example 1-5.In embodiment 1-3, from data
It can be seen that embodiment 1 is optimum embodiment.Under conditions of 25 DEG C, in terms of tensile strength embodiment 1 than comparative example 1,2,3,
4, it 5 is respectively increased: 5.2%, 7.2%, 6.7%, 7.3%, 38.6%；In terms of yield strength embodiment 1 than comparative example 1,2,
3, it 4,5 is respectively increased: 14.5%, 18.2%, 19.0%, 16.4%, 34.0%；Embodiment 1 compares comparative example in terms of elongation percentage
1, it 2,3,4,5 is respectively increased: 22.9%, 20.8%, 38.7%, 33.5%, 56.9%.Under conditions of 300 DEG C, tension is strong
Degree aspect embodiment 1 is respectively increased than comparative example 1,2,3,4,5: 23.0%, 17.0%, 19.5%, 13.8%, 48.9%；
Embodiment 1 is respectively increased than comparative example 1,2,3,4,5 in terms of yield strength: 27.6%, 20.8%, 29.7%, 19.9%,
61.0%；Embodiment 1 is respectively increased than comparative example 1,2,3,4 in terms of elongation percentage: 36.3%, 21.9%, 33.6%,
18.9%, 47.8%.As can be seen that aluminium alloy formula and preparation method thereof of the invention can be effective from the increase rate of performance
Improve tensile strength, yield strength and the elongation percentage of gained aluminium alloy ingots；In terms of tensile strength and yield strength, embodiment 1
Aluminium alloy than increase rate of the aluminium alloy of comparative example 1-4 under 300 DEG C of hot conditions than at 25 DEG C under conditions of raising
Rate wants high, also reflects that comprehensive performance is more preferable under aluminium alloy ingots hot conditions of the present invention.And the performance of comparative example 1-5 is below reality
A 1-3 is applied, also illustrates that Gd, Y, Er, Ce element of addition play the role of improving aluminium alloy ingots performance.
2. Gd element refines aluminium alloy crystal of the present invention more, effectively increases aluminium in the element of addition rare earth
The mechanical performance of alloy.The aluminum alloy organization for adding Y is finer and closely woven, and the inoxidizability and ductility of aluminium alloy, resistance to height can be improved
Warm corrosive nature is greatly improved, and after adding Y, aluminum alloy surface can form the protective oxide film of continuous densification, can be hindered
The diffusion of oxygen, sulphur is immersed, and the corrosion resistance enabled aluminum alloy to gets a promotion.The addition of Er can form Al3Er, can be significantly thin
Alloy as-cast grain can inhibit to recrystallize to a certain extent, improve alloy thermal stability, can be improved at the same time not
With the tensile strength and hardness of the alloy under condition of heat treatment, Er can refine dendrite net born of the same parents tissue, improve recrystallization temperature.Ce
Intermetallic compound can be formed with Al, fusing point is more than 1000 DEG C, which can stablize work under 300 degrees Celsius of environment
Make.Embodiment 3 and the data of the tensile strength of comparative example 1-5 are compared, it can be found that tetra- kinds of elements of Gd, Y, Er, Ce produce
Synergistic effect is given birth to, embodiment 1 improves 20.6 (417.4-396.8=20.6) than comparative example 1；Embodiment 1 is mentioned than comparative example 2
High 27.9 (417.4-389.5=27.9)；Embodiment 1 improves 26.3 (417.4-391.1=26.3) than comparative example 3；It is real
It applies example 1 and improves 28.5 (417.4-388.9=28.5) than comparative example 4；Embodiment 1 improves 119.2 than comparative example 5
(417.4-298.2=119.2)；The data that comparative example 1-4 is individually subtracted in the data of embodiment 1, which are wherein added summation, is
103.3 (20.6+27.9+26.3+28.5=103.3), it is first relative to Gd, Y, Er, Ce is not added that this numerical value is less than embodiment 1
116.2 (103.3 < 116.2) reduced in the case where the comparative example 5 of element；Comparative example 1-4 is individually subtracted with embodiment 1 every group
Numerical value as Effect value, Gd, Y, Er, Ce element are closed in Effect value ratio Sr, Y, Er element that aluminium alloy ingots is applied in combination in aluminium
The sum of Effect value increase rate α=(116.2-103.3) 103.3 × 100%=12.49% of ÷ is used individually in ingot, i.e.,
Effect value improves 12.49% in the case where being applied in combination, and illustrates that Gd, Y, Er, Ce element generates corresponding synergistic effect, aluminium
The comprehensive performance of alloy pig, each component are indispensable.
It is significantly promoted 3. aluminium alloy ingots of the invention has in terms of tensile strength and yield strength, and pull resistance under high temperature
Energy is good, toughness is big；Simple production process of the invention is easy, with high security, the low advantage of production technology cost, production
Aluminium alloy ingots meets the requirement for being subjected to larger dynamic loading workpiece.
Specific embodiment
Invention is further described in detail With reference to embodiment.It is emphasized that following the description is only
It is merely exemplary, the range and its application being not intended to be limiting of the invention.
Embodiment 1
A kind of high-tensile tire bell aluminium alloy ingots, component and each component percentage are as follows: Mg1.5%, Ni1.4%,
Si1.1%, Fe0.6%, Ti0.37%, Y0.18%, Zn0.16%, Gd0.11%, Er0.07%, Ce0.05%, other metals
And nonmetallic impurity element total amount is no more than 0.5%, remaining is Al.
A kind of high-tensile tire bell aluminium alloy ingots preparation method, comprising the following steps:
S1: fusing: first fine aluminium, pure magnesium, alusil alloy that purity is 99.5 are added in smelting furnace, are heated to 723 DEG C simultaneously
Stirring is completely melt alloy, and alumel, alumin(i)um zinc alloy, ferroaluminium and aluminum titanium alloy is then added, is continuously heating to 740
DEG C, molten aluminium alloy is obtained after alloying element all fusing, molten metal is stirred and shaken with graphite rod, the gas in molten metal is discharged
Body；
S2: refining: the temperature of molten aluminium alloy is adjusted to 717 DEG C, and spraying into quality is aluminum alloy melt weight in furnace
0.32% refining agent carries out refining treatment, stands 8min after the completion of refining, the surface slag of molten aluminium alloy is clawed, is then risen
Temperature is added fining agent, aluminium cerium alloy, yttrium-magnesium alloy, aluminium gadpolinium alloy and Al-Er alloy, is passed through argon gas and is refined to 749 DEG C, gas
For voltage-controlled system in 0.51Mpa, the degasification time is 10min, and degasification, which finishes, examines molten aluminium alloy ingredient, carries out the after passing the inspection
It is secondary to skim, complete refining process；
S3: it stands: the molten aluminium alloy after refining being stood, is down to 694 DEG C to molten aluminium alloy temperature；
S4: ingot casting: in casting process, casting speed 58mm/min, water pressure of cooling water control is 0.14MPa, final to cast
Cause the aluminium alloy ingots of diameter and high respectively 45-55cm, 25-30cm；
S5: annealing: the aluminium alloy ingots after casting is made annealing treatment, aluminium alloy ingots is first put into Heat Treatment Furnace
In, it is warming up to 535 DEG C of heat preservation 60min；It is cooled to 510 DEG C of heat preservation 80min again, is finally cooled to 455 DEG C of heat preservation 12h, finally makes
Aluminium alloy ingots furnace cooling obtains aluminium alloy ingots finished product.
Embodiment 2
A kind of high-tensile tire bell aluminium alloy ingots, component and each component percentage are as follows: Mg1.2%, Ni1.1%,
Si0.4%, Fe0.4%, Ti0.25%, Y0.13%, Zn0.09%, Gd0.08%, Er0.06%, Ce0.03%, other metals
And nonmetallic impurity element total amount is no more than 0.5%, remaining is Al.
A kind of high-tensile tire bell aluminium alloy ingots preparation method, comprising the following steps:
S1: fusing: first fine aluminium, pure magnesium, alusil alloy that purity is 99.7% are added in smelting furnace, are heated to 705 DEG C
And stirring is completely melt alloy, and alumel, alumin(i)um zinc alloy, ferroaluminium and aluminum titanium alloy is then added, is continuously heating to
735 DEG C, molten aluminium alloy is obtained after alloying element all fusing, molten metal is stirred and shaken with graphite rod, is discharged in molten metal
Gas；
S2: refining: the temperature of molten aluminium alloy is adjusted to 710 DEG C, and spraying into quality is aluminum alloy melt weight in furnace
0.32% refining agent carries out refining treatment, stands 5min after the completion of refining, the surface slag of molten aluminium alloy is clawed, is then risen
Temperature is added fining agent, aluminium cerium alloy, yttrium-magnesium alloy, aluminium gadpolinium alloy and Al-Er alloy, is passed through argon gas and is refined to 740 DEG C, gas
For voltage-controlled system in 0.45MpaMpa, the degasification time is 8min, and degasification, which finishes, examines molten aluminium alloy ingredient, carries out after passing the inspection
It skims for the second time, completes refining process；
S3: it stands: the molten aluminium alloy after refining being stood, is down to 680 DEG C to molten aluminium alloy temperature；
S4: ingot casting: in casting process, casting speed 55mm/min, water pressure of cooling water control is 0.12MPa, final to cast
Cause the aluminium alloy ingots of diameter and high respectively 45-55cm, 25-30cm；
S5: annealing: the aluminium alloy ingots after casting is made annealing treatment, aluminium alloy ingots is first put into Heat Treatment Furnace
In, it is warming up to 535 DEG C of heat preservation 60min；It is cooled to 510 DEG C of heat preservation 80min again, is finally cooled to 455 DEG C of heat preservation 12h, finally makes
Aluminium alloy ingots furnace cooling obtains aluminium alloy ingots finished product.
Embodiment 3
A kind of high-tensile tire bell aluminium alloy ingots, component and each component percentage are as follows: Mg1.9%, Ni1.7%,
Si1.6%, Fe0.7%, Ti0.44%, Y0.27%, Zn0.25%, Gd0.14%, Er0.09%, Ce0.08%, other metals
And nonmetallic impurity element total amount is no more than 0.5%, remaining is Al.
A kind of high-tensile tire bell aluminium alloy ingots preparation method, comprising the following steps:
S1: fusing: first fine aluminium, pure magnesium, alusil alloy that purity is 99.7% are added in smelting furnace, are heated to 730 DEG C
And stirring is completely melt alloy, and alumel, alumin(i)um zinc alloy, ferroaluminium and aluminum titanium alloy is then added, is continuously heating to
755 DEG C, molten aluminium alloy is obtained after alloying element all fusing, molten metal is stirred and shaken with graphite rod, is discharged in molten metal
Gas；
S2: refining: the temperature of molten aluminium alloy is adjusted to 725 DEG C, and spraying into quality is aluminum alloy melt weight in furnace
0.32% refining agent carries out refining treatment, stands 10min after the completion of refining, the surface slag of molten aluminium alloy is clawed, then
760 DEG C are warming up to, fining agent, aluminium cerium alloy, yttrium-magnesium alloy, aluminium gadpolinium alloy and Al-Er alloy is added, is passed through argon gas and is refined,
For pressure control in 0.55Mpa, the degasification time is 11min, and degasification, which finishes, examines molten aluminium alloy ingredient, carries out after passing the inspection
It skims for the second time, completes refining process；
S3: it stands: the molten aluminium alloy after refining being stood, is down to 700 DEG C to molten aluminium alloy temperature；
S4: ingot casting: in casting process, casting speed 60mm/min, water pressure of cooling water control is 0.17MPa, final to cast
Cause the aluminium alloy ingots of diameter and high respectively 45-55cm, 25-30cm；
S5: annealing: the aluminium alloy ingots after casting is made annealing treatment, aluminium alloy ingots is first put into Heat Treatment Furnace
In, it is warming up to 535 DEG C of heat preservation 60min；It is cooled to 510 DEG C of heat preservation 80min again, is finally cooled to 455 DEG C of heat preservation 12h, finally makes
Aluminium alloy ingots furnace cooling obtains aluminium alloy ingots finished product.
Comparative example 1
The component and each component percentage, processing step of aluminium alloy ingots are substantially the same manner as Example 1, have only the difference is that group
Gd element is not added in point.
Comparative example 2
The component and each component percentage, processing step of aluminium alloy ingots are substantially the same manner as Example 1, have only the difference is that group
Y element is not added in point.
Comparative example 3
The component and each component percentage, processing step of aluminium alloy ingots are substantially the same manner as Example 1, have only the difference is that group
Er element is not added in point.
Comparative example 4
The component and each component percentage, processing step of aluminium alloy ingots are substantially the same manner as Example 1, have only the difference is that group
Ce element is not added in point.
Comparative example 5
The component and each component percentage, processing step of aluminium alloy ingots are substantially the same manner as Example 1, have only the difference is that group
Gd, Y, Er, Ce element are not added in point.
Aluminium alloy ingots obtained by embodiment 1-3, comparative example 1-5 is tested according to GB/T16865-2013, gained
The results are shown in Table 1.
The test of aluminium alloy ingots tensile strength, yield strength and elongation percentage made from 1 embodiment 1-3 of table, comparative example 1-5
As a result
As shown in Table 1, the data of embodiment 1-3 are superior to the data of comparative example 1-5.It, can from data in embodiment 1-3
To find out embodiment 1 for optimum embodiment.Under conditions of 25 DEG C, embodiment 1 is than comparative example 1,2,3,4,5 in terms of tensile strength
It is respectively increased: 5.2%, 7.2%, 6.7%, 7.3%, 38.6%；In terms of yield strength embodiment 1 than comparative example 1,2,3,4,
5 are respectively increased: 14.5%, 18.2%, 19.0%, 16.4%, 34.0%；In terms of elongation percentage embodiment 1 than comparative example 1,2,
3, it 4,5 is respectively increased: 22.9%, 20.8%, 38.7%, 33.5%, 56.9%.Under conditions of 300 DEG C, tensile strength side
Face embodiment 1 is respectively increased than comparative example 1,2,3,4,5: 23.0%, 17.0%, 19.5%, 13.8%, 48.9%；Surrender
Embodiment 1 is respectively increased than comparative example 1,2,3,4,5 in terms of intensity: 27.6%, 20.8%, 29.7%, 19.9%,
61.0%；Embodiment 1 is respectively increased than comparative example 1,2,3,4 in terms of elongation percentage: 36.3%, 21.9%, 33.6%,
18.9%, 47.8%.As can be seen that aluminium alloy formula and preparation method thereof of the invention can be effective from the increase rate of performance
Improve tensile strength, yield strength and the elongation percentage of gained aluminium alloy ingots；In terms of tensile strength and yield strength, embodiment 1
Aluminium alloy than increase rate of the aluminium alloy of comparative example 1-4 under 300 DEG C of hot conditions than at 25 DEG C under conditions of raising
Rate wants high, also reflects that comprehensive performance is more preferable under aluminium alloy ingots hot conditions of the present invention.And the performance of comparative example 1-5 is below reality
A 1-3 is applied, also illustrates that Gd, Y, Er, Ce element of addition play the role of improving aluminium alloy ingots performance.
In the element of addition rare earth, Gd element refines aluminium alloy crystal of the present invention more, effectively increases aluminium conjunction
The mechanical performance of gold.The aluminum alloy organization for adding Y is finer and closely woven, and the inoxidizability and ductility of aluminium alloy, high temperature resistant can be improved
Corrosive nature is greatly improved, and after adding Y, aluminum alloy surface can form the protective oxide film of continuous densification, can hinder oxygen,
The diffusion of sulphur is immersed, and the corrosion resistance enabled aluminum alloy to gets a promotion.The addition of Er can form Al3Er can be refined significantly
Alloy casting state crystal grain can inhibit to recrystallize to a certain extent, improve alloy thermal stability, difference can be improved at the same time
The tensile strength and hardness of alloy under condition of heat treatment, Er can refine dendrite net born of the same parents tissue, improve recrystallization temperature.Ce can
Intermetallic compound is formed with Al, fusing point is more than 1000 DEG C, which can stablize work under 300 degrees Celsius of environment
Make.Embodiment 3 and the data of the tensile strength of comparative example 1-5 are compared, it can be found that tetra- kinds of elements of Gd, Y, Er, Ce produce
Synergistic effect is given birth to, embodiment 1 improves 20.6 (417.4-396.8=20.6) than comparative example 1；Embodiment 1 is mentioned than comparative example 2
High 27.9 (417.4-389.5=27.9)；Embodiment 1 improves 26.3 (417.4-391.1=26.3) than comparative example 3；It is real
It applies example 1 and improves 28.5 (417.4-388.9=28.5) than comparative example 4；Embodiment 1 improves 119.2 than comparative example 5
(417.4-298.2=119.2)；The data that comparative example 1-4 is individually subtracted in the data of embodiment 1, which are wherein added summation, is
103.3 (20.6+27.9+26.3+28.5=103.3), it is first relative to Gd, Y, Er, Ce is not added that this numerical value is less than embodiment 1
116.2 (103.3 < 116.2) reduced in the case where the comparative example 5 of element；Comparative example 1-4 is individually subtracted with embodiment 1 every group
Numerical value as Effect value, Gd, Y, Er, Ce element are closed in Effect value ratio Sr, Y, Er element that aluminium alloy ingots is applied in combination in aluminium
The sum of Effect value increase rate α=(116.2-103.3) 103.3 × 100%=12.49% of ÷ is used individually in ingot, i.e.,
Effect value improves 12.49% in the case where being applied in combination, and illustrates that Gd, Y, Er, Ce element generates corresponding synergistic effect, aluminium
The comprehensive performance of alloy pig, each component are indispensable.
The above content is combine it is specific/further detailed description of the invention for preferred embodiment, cannot
Assert that specific implementation of the invention is only limited to these instructions.General technical staff of the technical field of the invention is come
It says, without departing from the inventive concept of the premise, some replacements or modifications can also be made to the embodiment that these have been described,
And these substitutions or variant all shall be regarded as belonging to protection scope of the present invention.
Claims (10)
1. a kind of high-tensile tire bell aluminium alloy ingots, which is characterized in that its component and each component percentage are as follows: Mg1.2-
1.9%, Ni1.1-1.7%, Si0.4-1.6%, Fe0.4-0.7%, Ti0.25-0.44%, Y0.13-0.27%, Zn0.09-
0.25%, Gd0.08-0.14%, Er0.06-0.09%, Ce0.03-0.08%, other metals and nonmetallic impurity element are total
Amount is no more than 0.5%, remaining is Al.
2. high-tensile tire bell aluminium alloy ingots as described in claim 1, which is characterized in that its component and each component percentage
Than are as follows: Mg1.5%, Ni1.4%, Si1.1%, Fe0.6%, Ti0.37%, Y0.18%, Zn0.16%, Gd0.11%,
Er0.07%, Ce0.05%, other metals and nonmetallic impurity element total amount are no more than 0.5%, remaining is Al.
3. high-tensile tire bell aluminium alloy ingots as claimed in claim 1 or 2, which is characterized in that aluminium used is fine aluminium,
Purity is 99.7%.
4. a kind of high-tensile tire bell aluminium alloy ingots preparation method as described in any one of claims 1-3, feature exist
In, comprising the following steps:
S1: fusing: first fine aluminium, pure magnesium, alusil alloy being added in smelting furnace, are heated to 705-730 DEG C and stirring keeps alloy complete
Then running down is added alumel, alumin(i)um zinc alloy, ferroaluminium and aluminum titanium alloy, 735-755 DEG C is continuously heating to, wait close
Gold element obtains molten aluminium alloy after all melting, and molten metal is stirred and shaken with graphite rod, and the gas in molten metal is discharged；
S2: refining: the temperature of molten aluminium alloy is adjusted to 710-725 DEG C, is sprayed into refining agent and is carried out refining treatment, refining is completed
After stand 5-10min, the surface slag of molten aluminium alloy is clawed, then heats to 740-760 DEG C, fining agent is added, aluminium cerium closes
Gold, yttrium-magnesium alloy, aluminium gadpolinium alloy and Al-Er alloy, are passed through argon gas and are refined, and pressure control is removed in 0.45Mpa-0.55Mpa
The gas time is 8-11min, and degasification, which finishes, examines molten aluminium alloy ingredient, is skimmed for the second time after passing the inspection, completes essence
Refining process；
S3: it stands: the molten aluminium alloy after refining being stood, is down to 680-700 DEG C to molten aluminium alloy temperature；
S4: ingot casting: in casting process, casting speed 55-60mm/min, water pressure of cooling water control is 0.12-0.17MPa, most
It is cast as the aluminium alloy ingots of diameter and high respectively 45-55cm, 25-30cm eventually；
S5: annealing: the aluminium alloy ingots after casting is made annealing treatment, aluminium alloy ingots finished product is obtained.
5. the corrosion-resistant pack alloy preparation method of automobile as claimed in claim 4, which is characterized in that by aluminium in step S2
The temperature of alloy molten solution is adjusted to 749 DEG C of progress refining treatments.
6. high-tensile tire bell aluminium alloy ingots preparation method as claimed in claim 4, which is characterized in that add in step S2
The quality for entering refining agent is 0.32% of aluminum alloy melt weight in furnace.
7. high-tensile tire bell aluminium alloy ingots preparation method as claimed in claim 4, which is characterized in that will in step S2
Pressure control is in 0.51Mpa.
8. high-tensile tire bell aluminium alloy ingots preparation method as claimed in claim 4, which is characterized in that cast in step S4
Making speed is 58mm/min.
9. high-tensile tire bell aluminium alloy ingots preparation method as claimed in claim 4, which is characterized in that cold in step S4
But water hydraulic pressure control is 0.14MPa.
10. high-tensile tire bell aluminium alloy ingots preparation method as claimed in claim 4, which is characterized in that step S5 institute
The annealing process step stated are as follows: first aluminium alloy ingots is put into Heat Treatment Furnace, is warming up to 535 DEG C of heat preservation 60min；It is cooled to again
510 DEG C of heat preservation 80min are finally cooled to 455 DEG C of heat preservation 12h, finally enable aluminum alloy to ingot furnace cooling.
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