CN110343919A - A kind of aluminium alloy and preparation method thereof that the big intensity of light weight hardness is high - Google Patents
A kind of aluminium alloy and preparation method thereof that the big intensity of light weight hardness is high Download PDFInfo
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- CN110343919A CN110343919A CN201910653236.8A CN201910653236A CN110343919A CN 110343919 A CN110343919 A CN 110343919A CN 201910653236 A CN201910653236 A CN 201910653236A CN 110343919 A CN110343919 A CN 110343919A
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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
- 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
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Abstract
The invention discloses a kind of aluminium alloys and preparation method thereof that the big intensity of light weight hardness is high, including silicon, manganese, magnesium, copper, zinc, iron, nickel, titanium, lead, tin, chromium, boron, lithium, zirconium, rare earth element, remaining is aluminium, the aluminium alloy adds lithium and zirconium, cooperate iron and nickel, pass through the cooperation of lithium and zirconium, lithium, which can effectively be played, improves the effect of alloy strength, there is very high chemical activity and biggish atomic radius by the rare earth element of addition, it is added in alloy, crystal grain can be refined, improve recrystallization temperature, so as to improve processing performance significantly, also having prevents from being segregated, degasification, the effects of removal of impurities and purification and improvement metallographic structure, to reach improvement mechanical performance, physical property and processing performance etc. integrate purpose, the superplasticity of production method raising alloy, thermal property, heat resistance, electric property, thermal conductivity Energy and corrosion resistance, reduce the thermal expansion coefficient of alloy, improve the processing performance of alloy.
Description
Technical field:
The present invention relates to field of aluminum alloys, specially a kind of aluminium alloy and preparation method thereof that the big intensity of light weight hardness is high.
Background technique:
Aluminium alloy is most widely used one kind non-ferrous metal structural material in industry, Aeronautics and Astronautics, automobile, machine-building,
It has been widely applied in ship and chemical industry.The rapid development of industrial economy, the demand to aluminum alloy piping welding structural member increasingly increase
More, the Research on Weldability enabled aluminum alloy to is also goed deep into therewith.Aluminium alloy density is low, but intensity is relatively high, near or above high-quality steel,
Plasticity is good, can be processed into various profiles, has excellent electric conductivity, thermal conductivity and corrosion stability, is industrially widely used, usage amount
It is only second to steel.But existing aluminium alloy function is relatively simple, although hardness is big, plasticity is poor, poor corrosion resistance, hot mastication
Fastly, crackle is more, and elongation percentage is poor, and hardness and strength cannot all have bigger breakthrough.
Summary of the invention:
The purpose of the present invention is in view of the drawbacks of the prior art, provide a kind of aluminium alloy and its system that the big intensity of light weight hardness is high
Preparation Method, to solve the problems, such as that above-mentioned background technique proposes.
To achieve the above object, the invention provides the following technical scheme: a kind of aluminium alloy that the big intensity of light weight hardness is high,
Including silicon 0.2-0.4%, manganese 0.1-0.3%, magnesium 5.5-7.5%, copper 0.1-0.2%, zinc 0.03-0.04%, iron 0.1-
0.2%, nickel 0.06-0.08%, titanium 0.04-0.07%, lead 0.03-0.06%, tin 0.02-0.05%, chromium 0.01-0.03%,
Boron 0.02-0.1%, lithium 0.5-2%, zirconium 0.5-2%, rare earth element 4.15-5.3%, remaining is aluminium.
As a preferred technical solution of the present invention, the rare earth element be lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium,
Any one or more of terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium.
As a preferred technical solution of the present invention, the silicon is the mixture of nano-silicon and rare earth silicon, its ratio be
2:3。
As a preferred technical solution of the present invention, the copper is the mixture of red copper and brass, the red copper and institute
Stating brass ratio is 3:7.
As a preferred technical solution of the present invention, the iron is iron powder, and the zirconium is zirconium dioxide and micro two
Hafnium oxide mixture.
As a preferred technical solution of the present invention, the lithium is lithium carbonate, and the chromium is chromium oxide.
A kind of preparation method for the aluminium alloy that the big intensity of light weight hardness is high, specific step is as follows；
(1) according to weight percent feeding: silicon 0.2-0.4%, manganese 0.1-0.3%, magnesium 5.5-7.5%, copper 0.1-0.2%, zinc
0.03-0.04%, iron 0.1-0.2%, nickel 0.06-0.08%, titanium 0.04-0.07%, lead 0.03-0.06%, tin 0.02-
0.05%, chromium 0.01-0.03%, boron 0.02-0.1%, lithium 0.5-2%, zirconium 0.5-2%, rare earth element 4.15-5.3%, other
For aluminium and some inevitable impurity elements；
(2) hot rolling: the aluminium alloy mixture obtained in step (1) is subjected to pre-treatment, obtained material carries out pre- again after pre-treatment
Heat, keeps preheating temperature hot rolling by 600~680 DEG C of preheating temperature, time 10-12h, cooling to get cold rolling blank；
(3) once cold rolling: cold rolling cogging is carried out with blank to cold rolling obtained by step (2), through 3-5 passage cold rolling, total deformation is
70%~80% to get cold rolling intermediate products；
(4) continuity air cushion furnace annealing, annealing temperature 350 air cushion furnace annealing: are used to cold rolling intermediate products obtained by step (3)
~450 DEG C, annealing speed is 30~60m/min；
(5) secondary cold-rolling: after air cushion furnace annealing, continue to be cold-rolled to finished product thickness, total deformation is 80%~86%；
(6) stretch bending is rectified: control stretcher strain amount is 0.8%~0.9%.
The beneficial effects of the present invention are: aluminium alloy addition lithium and zirconium, cooperate iron and nickel, aluminium-lithium-zirconium-iron or nickel are formed
System, by the cooperation of lithium and zirconium, can effectively play lithium improves the effect of alloy strength, has by the rare earth element of addition very high
Chemical activity and biggish atomic radius, be added in alloy, can refine crystal grain, improve recrystallization temperature, so as to significant
Ground improves processing performance, also has the effects that prevent segregation, degasification, removal of impurities and purification and improves metallographic structure, to reach
Improve the comprehensive purpose such as mechanical performance, physical property and processing performance, which improves the superplasticity of alloy, calorifics
Energy, heat resistance, electric property, heating conduction and corrosion resistance reduce the thermal expansion coefficient of alloy, the technique for improving alloy
Performance.
Specific embodiment:
The preferred embodiments of the present invention will be described in detail below, so that advantages and features of the invention can be easier to by this field
Personnel's understanding, so as to make a clearer definition of the protection scope of the present invention.
The present invention provides a kind of technical solution: a kind of aluminium alloy that the big intensity of light weight hardness is high, including silicon 0.2-
0.4%, manganese 0.1-0.3%, magnesium 5.5-7.5%, copper 0.1-0.2%, zinc 0.03-0.04%, iron 0.1-0.2%, nickel 0.06-
0.08%, titanium 0.04-0.07%, lead 0.03-0.06%, tin 0.02-0.05%, chromium 0.01-0.03%, boron 0.02-0.1%,
Lithium 0.5-2%, zirconium 0.5-2%, rare earth element 4.15-5.3%, remaining is aluminium.
Rare earth element be lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium any one or it is more
Kind.Silicon is the mixture of nano-silicon and rare earth silicon, and its ratio be 2:3.
Copper is the mixture of red copper and brass, and red copper and brass ratio are 3:7.Iron is iron powder, and zirconium is zirconium dioxide and micro-
The hafnium oxide mixture of amount.Lithium is lithium carbonate, and chromium is chromium oxide.
A kind of preparation method for the aluminium alloy that the big intensity of light weight hardness is high, specific step is as follows；
(1) according to weight percent feeding: silicon 0.2-0.4%, manganese 0.1-0.3%, magnesium 5.5-7.5%, copper 0.1-0.2%, zinc
0.03-0.04%, iron 0.1-0.2%, nickel 0.06-0.08%, titanium 0.04-0.07%, lead 0.03-0.06%, tin 0.02-
0.05%, chromium 0.01-0.03%, boron 0.02-0.1%, lithium 0.5-2%, zirconium 0.5-2%, rare earth element 4.15-5.3%, other
For aluminium and some inevitable impurity elements；
(2) hot rolling: the aluminium alloy mixture obtained in step (1) is subjected to pre-treatment, obtained material carries out pre- again after pre-treatment
Heat, keeps preheating temperature hot rolling by 600~680 DEG C of preheating temperature, time 10-12h, cooling to get cold rolling blank；
(3) once cold rolling: cold rolling cogging is carried out with blank to cold rolling obtained by step (2), through 3-5 passage cold rolling, total deformation is
70%~80% to get cold rolling intermediate products；
(4) continuity air cushion furnace annealing, annealing temperature 350 air cushion furnace annealing: are used to cold rolling intermediate products obtained by step (3)
~450 DEG C, annealing speed is 30~60m/min；
(5) secondary cold-rolling: after air cushion furnace annealing, continue to be cold-rolled to finished product thickness, total deformation is 80%~86%；
(6) stretch bending is rectified: control stretcher strain amount is 0.8%~0.9%.
Embodiment 1
Composition of raw materials: including silicon 0.2%, manganese 0.1%, magnesium 5.5%, copper 0.1%, zinc 0.03%, iron 0.1%, nickel 0.06%, titanium
0.04%, lead 0.03%, tin 0.02%, chromium 0.01%, boron 0.02%, lithium 0.5%, zirconium 0.5%, rare earth element 4.15%,
Remaining is aluminium.
Specific step is as follows；
(1) according to the weight percent feeding of composition of raw materials；
(2) hot rolling: the aluminium alloy mixture obtained in step (1) is subjected to pre-treatment, obtained material carries out pre- again after pre-treatment
Heat, keeps preheating temperature hot rolling by 600~680 DEG C of preheating temperature, time 10-12h, cooling to get cold rolling blank；
(3) once cold rolling: cold rolling cogging is carried out with blank to cold rolling obtained by step (2), through 3-5 passage cold rolling, total deformation is
70%~80% to get cold rolling intermediate products；
(4) continuity air cushion furnace annealing, annealing temperature 350 air cushion furnace annealing: are used to cold rolling intermediate products obtained by step (3)
~450 DEG C, annealing speed is 30~60m/min；
(5) secondary cold-rolling: after air cushion furnace annealing, continue to be cold-rolled to finished product thickness, total deformation is 80%~86%；
(6) stretch bending is rectified: control stretcher strain amount is 0.8%~0.9%.
Embodiment 2
Composition of raw materials: including silicon 0.3%, manganese 0.2%, magnesium 6%, copper 0.15%, zinc 0.035%, iron 0.15%, nickel 0.07%,
Titanium 0.06%, lead 0.04%, tin 0.03%, chromium 0.02%, boron 0.09%, lithium 1%, zirconium 1%, rare earth element 5%, remaining is
Aluminium.
Specific step is as follows；
(1) according to the weight percent feeding of composition of raw materials；
(2) hot rolling: the aluminium alloy mixture obtained in step (1) is subjected to pre-treatment, obtained material carries out pre- again after pre-treatment
Heat, keeps preheating temperature hot rolling by 600~680 DEG C of preheating temperature, time 10-12h, cooling to get cold rolling blank；
(3) once cold rolling: cold rolling cogging is carried out with blank to cold rolling obtained by step (2), through 3-5 passage cold rolling, total deformation is
70%~80% to get cold rolling intermediate products；
(4) continuity air cushion furnace annealing, annealing temperature 350 air cushion furnace annealing: are used to cold rolling intermediate products obtained by step (3)
~450 DEG C, annealing speed is 30~60m/min；
(5) secondary cold-rolling: after air cushion furnace annealing, continue to be cold-rolled to finished product thickness, total deformation is 80%~86%；
(6) stretch bending is rectified: control stretcher strain amount is 0.8%~0.9%.
Embodiment 3
Composition of raw materials: including silicon 0.4%, manganese 0.3%, magnesium 7.5%, copper 0.2%, zinc 0.04%, iron 0.2%, nickel 0.08%, titanium
0.07%, lead 0.06%, tin 0.05%, chromium 0.03%, boron 0.1%, lithium 2%, zirconium 2%, rare earth element 5.3%, remaining is aluminium.
Specific step is as follows；
(1) according to the weight percent feeding of composition of raw materials；
(2) hot rolling: the aluminium alloy mixture obtained in step (1) is subjected to pre-treatment, obtained material carries out pre- again after pre-treatment
Heat, keeps preheating temperature hot rolling by 600~680 DEG C of preheating temperature, time 10-12h, cooling to get cold rolling blank；
(3) once cold rolling: cold rolling cogging is carried out with blank to cold rolling obtained by step (2), through 3-5 passage cold rolling, total deformation is
70%~80% to get cold rolling intermediate products；
(4) continuity air cushion furnace annealing, annealing temperature 350 air cushion furnace annealing: are used to cold rolling intermediate products obtained by step (3)
~450 DEG C, annealing speed is 30~60m/min；
(5) secondary cold-rolling: after air cushion furnace annealing, continue to be cold-rolled to finished product thickness, total deformation is 80%~86%；
(6) stretch bending is rectified: control stretcher strain amount is 0.8%~0.9%.
Embodiment 1-3's tests detection table with control group；
Control group is common aluminium alloy；
The aluminium alloy adds lithium and zirconium, cooperates iron and nickel, and forming aluminium-lithium-zirconium-iron or nickel system can have by the cooperation of lithium and zirconium
Effect, which plays lithium, improves the effect of alloy strength, has very high chemical activity and biggish atom half by the rare earth element of addition
Diameter is added in alloy, can be refined crystal grain, be improved recrystallization temperature, and so as to improve processing performance significantly, also having is prevented
The effects of segregation, degasification, removal of impurities and purification and improvement metallographic structure, so that reaching improves mechanical performance, physical property and add
Work performance etc. integrates purpose, which improves superplasticity, thermal property, heat resistance, electric property, the thermal conductivity of alloy
Energy and corrosion resistance, reduce the thermal expansion coefficient of alloy, improve the processing performance of alloy.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield.
Claims (7)
1. a kind of aluminium alloy that the big intensity of light weight hardness is high, which is characterized in that including silicon 0.2-0.4%, manganese 0.1-0.3%, magnesium
5.5-7.5%, copper 0.1-0.2%, zinc 0.03-0.04%, iron 0.1-0.2%, nickel 0.06-0.08%, titanium 0.04-0.07%, lead 0.03-
0.06%, tin 0.02-0.05%, chromium 0.01-0.03%, boron 0.02-0.1%, lithium 0.5-2%, zirconium 0.5-2%, rare earth element 4.15-
5.3%, remaining is aluminium.
2. a kind of aluminium alloy that the big intensity of light weight hardness is high according to claim 1, it is characterised in that: the rare earth member
Element is any one or more of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium.
3. a kind of aluminium alloy that the big intensity of light weight hardness is high according to claim 1, it is characterised in that: the silicon is to receive
The mixture of rice silicon and rare earth silicon, its ratio be 2:3.
4. a kind of aluminium alloy that the big intensity of light weight hardness is high according to claim 1, it is characterised in that: the copper is purple
The mixture of copper and brass, the red copper and the brass ratio are 3:7.
5. a kind of aluminium alloy that the big intensity of light weight hardness is high according to claim 1, it is characterised in that: the iron is iron
Powder, the zirconium are zirconium dioxide and micro hafnium oxide mixture.
6. a kind of aluminium alloy that the big intensity of light weight hardness is high according to claim 1, it is characterised in that: the lithium is carbon
Sour lithium, the chromium are chromium oxide.
7. a kind of preparation method of the high aluminium alloy of big intensity of light weight hardness as described in claim 1-6, it is characterised in that:
Specific step is as follows；
(1) according to weight percent feeding: silicon 0.2-0.4%, manganese 0.1-0.3%, magnesium 5.5-7.5%, copper 0.1-0.2%, zinc 0.03-
0.04%, iron 0.1-0.2%, nickel 0.06-0.08%, titanium 0.04-0.07%, lead 0.03-0.06%, tin 0.02-0.05%, chromium 0.01-
0.03%, boron 0.02-0.1%, lithium 0.5-2%, zirconium 0.5-2%, rare earth element 4.15-5.3%, other are aluminium and some inevitable
Impurity element；
(2) hot rolling: the aluminium alloy mixture obtained in step (1) is subjected to pre-treatment, obtained material carries out pre- again after pre-treatment
Heat, keeps preheating temperature hot rolling by 600~680 DEG C of preheating temperature, time 10-12h, cooling to get cold rolling blank；
(3) once cold rolling: cold rolling cogging is carried out with blank to cold rolling obtained by step (2), through 3-5 passage cold rolling, total deformation is
70%~80% to get cold rolling intermediate products；
(4) continuity air cushion furnace annealing, annealing temperature 350 air cushion furnace annealing: are used to cold rolling intermediate products obtained by step (3)
~450 DEG C, annealing speed is 30~60m/min；
(5) secondary cold-rolling: after air cushion furnace annealing, continue to be cold-rolled to finished product thickness, total deformation is 80%~86%；
(6) stretch bending is rectified: control stretcher strain amount is 0.8%~0.9%.
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Cited By (4)
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| CN110592435A (en) * | 2019-11-01 | 2019-12-20 | 安徽鑫铂铝业股份有限公司 | Lightweight aluminum alloy profile |
| CN111197147A (en) * | 2020-02-20 | 2020-05-26 | 孙志颜 | Aluminum alloy and processing method thereof |
| CN112458327A (en) * | 2020-11-09 | 2021-03-09 | 哈尔滨理工大学 | Method for improving organization and mechanical property of ZL207 aluminum alloy |
| CN112575234A (en) * | 2020-11-24 | 2021-03-30 | 南通众福新材料科技有限公司 | High-thermal-conductivity, high-toughness and corrosion-resistant aluminum alloy for 5G mobile phone and manufacturing method thereof |
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