CN104264020A - High-strength die casting aluminum alloy and preparation method thereof - Google Patents

High-strength die casting aluminum alloy and preparation method thereof Download PDF

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Publication number
CN104264020A
CN104264020A CN201410554545.7A CN201410554545A CN104264020A CN 104264020 A CN104264020 A CN 104264020A CN 201410554545 A CN201410554545 A CN 201410554545A CN 104264020 A CN104264020 A CN 104264020A
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aluminium
alloy
master alloy
die
aluminum alloy
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CN201410554545.7A
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CN104264020B (en
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邓邦惠
余云
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SUZHOU KAIYOU ELECTRONIC SCIENCE & TECHNOLOGY Co Ltd
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SUZHOU KAIYOU ELECTRONIC SCIENCE & TECHNOLOGY Co Ltd
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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
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Forging (AREA)

Abstract

The invention discloses a high-strength die casting aluminum alloy and a preparation method thereof. The aluminum alloy comprises the following ingredients according to weight percent: 10wt%-30wt% of Zn, 5.0wt%-8.0wt% of Si, 3.0wt%-5.0wt% of Cu, 0.1wt%-1.0wt% of Mn, 0.1wt%-0.5wt% of Ti, 0.05wt%-0.2wt% of Re, and the balance of Al and inevitable impurities. The die casting aluminum alloy obtained through the preparation method is good in die casting property, extremely high in strength and rigidity and good in cutting processing performance, is practical for casting inner member products such as an extremely thin mobile middle plate, and is an aluminum alloy material with extensive application.

Description

A kind of high strength die-casting aluminum alloy and preparation method thereof
Technical field
The present invention relates to metal material field, be specifically related to a kind of high strength die-casting aluminum alloy plastics on new materials and preparation method thereof.
Background technology
Along with modern science and technology and industrial expansion, the transportation such as electronics, aerospace, navigation, bullet train is day by day urgent to the demand of high-strength structure material, require to try one's best weight reduction and cost under the prerequisite of proof strength, to improve carrying capacity and speed, high strength cast aluminum alloys becomes first-selected.
Aldural has that proportion is little, intensity is high and the advantage such as processing characteristics is excellent, is widely used in aircraft industry and civilian industry field.Although aluminum current alloy is various in style, different properties, be difficult to reach excellent comprehensive mechanical property, some aluminium alloy tensile strength is high, but unit elongation is on the low side, or on the contrary, unit elongation is high, but tensile strength is inadequate again, or unit elongation and tensile strength all high, but castability is bad.Therefore, prior art existing defects, needs to improve.
Summary of the invention
The object of the present invention is to provide a kind of high strength die-casting aluminum alloy, aluminium diecast alloy intensity of the prior art be low to solve, the problem such as poor toughness, the preparation method of this high strength die-casting aluminum alloy of preparation is provided simultaneously.
In order to realize foregoing invention object, the technical solution used in the present invention is as follows:
A kind of high strength die-casting aluminum alloy, the weight percent of each component is: Zn:10wt%-30wt%; Si:5.0wt%-8.0wt%; Cu:3.0wt%-5.0wt%; Mn:0.1wt%-1.0wt%; Ti:0.1wt%-0.5wt%; Re:0.05wt%-0.2wt%; Surplus is Al and inevitable impurity.
Further, the weight percent of each component is: Zn:15wt%-25wt%; Si:6.0wt%-7.0wt%; Cu:3.5wt%-4.5wt%; Mn:0.4wt%-0.7wt%; Ti:0.2wt%-0.4wt%; Re:0.1wt%-0.15wt%; Surplus is Al and inevitable impurity.
A preparation method for high strength die-casting aluminum alloy, comprises the following steps:
1) dry: by ready raw material: fine aluminium Al, pure zinc Zn and other master alloy, carry out drying and processing;
2) melting: first add aluminium ingot in melting, is increased to 730-780 DEG C by temperature, after aluminium ingot melts completely, then adds other master alloy successively, after it melts completely, finally adds pure zinc ingot; After stirring, after insulation 15-25min, refining 20-30min, finally remove slag after scratching in the ashes and cast, pouring temperature controls between 680-720 DEG C, obtained aluminium alloy cast ingot;
3) die casting: the aluminium alloy cast ingot prepared is carried out standard test die casting, and cast temperature controls at 700-750 DEG C, and die temperature controls at 180-230 DEG C, and die casting speed control is at 1.0-3.0m/s; Finally can obtain the standard testing batten part of die casting.
Further, other master alloy described is made up of aluminium manganese AlMn master alloy, aluminium silicon AlSi master alloy, aluminum bronze AlCu master alloy, aluminium titanium AlTi master alloy and aluminium rhenium AlRe master alloy.
The invention provides a kind of aluminium diecast alloy of high strength and high hardness, the metallic element zinc added in component incorporates in the solute atoms of sosoloid and causes lattice distortion, increase the resistance of dislocation motion, make slippage be difficult to carry out, thus the intensity of alloy and hardness are increased; The metallic element rhenium added in component makes silicon and copper can form with aluminium the second-phase strengthened, and is distributed in matrix phase small and dispersed, produces significant strengthening effect.The rare earth element added in component, forms aluminium rare earth intermetallic compound with aluminium, and the distribution of small and dispersed ground in the base, is played crystal grain thinning function of organization, thus put forward heavy alloyed strength property greatly.By adding metallic element manganese and titanium, can to TiMn 2produce metamorphism mutually, the refinement organized by alloy and to Mg 17al 12rotten the playing of phase is suppressed crackle to be formed or delays the effect of crack propagation, thus puies forward heavy alloyed intensity and hardness.
Adopt such scheme, the aluminium alloy compression casting that the present invention obtains is functional, and has very high intensity, hardness and toughness, and welding property and cutting ability are also good, are the high strength die-casting aluminum alloys that a kind of purposes is wider.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but and unrestricted range of application of the present invention.
embodiment 1
The weight percent of each component of the high strength die-casting aluminum alloy of embodiments of the invention 1 is: Zn:10wt%; Si:6wt%; Cu:4wt%; Mn:0.5wt%; Ti:0.2wt%; Re:0.1wt%; Surplus is Al and inevitable impurity.
The preparation method of the high strength die-casting aluminum alloy of the embodiment of the present invention 1, comprises the steps:
1) dry: by ready raw material: fine aluminium Al, pure zinc Zn, aluminium manganese AlMn master alloy, AlSi master alloy, AlCu master alloy, AlTi master alloy and AlRe master alloy, carry out drying and processing; Wherein Al, Zn are dried at 100 DEG C of temperature, and master alloy is then dried at 150 DEG C of temperature;
2) melting: first add aluminium ingot in melting, is increased to 750 DEG C, after aluminium ingot melts completely by temperature, then adds other master alloy successively, after it melts completely, finally adds pure zinc ingot; After stirring, after insulation 20min, refining 25min, finally removes slag after scratching in the ashes and casts, and pouring temperature controls between 700 DEG C, obtained aluminium alloy cast ingot;
3) die casting: the aluminium alloy cast ingot prepared is carried out standard test die casting, cast temperature controls at 720 DEG C, and die temperature controls at 200 DEG C, and die casting speed control is at 2.0m/s; The finally standard testing exemplar A1 of obtained die casting.
embodiment 2
Raw material and preparation method substantially the same manner as Example 1, difference is only, the addition of zinc is 15.0wt%, obtained standard testing exemplar A2.
embodiment 3
Raw material and preparation method substantially the same manner as Example 1, difference is only, the addition of zinc is 20.0wt%, obtained standard testing exemplar A3.
embodiment 4
Raw material and preparation method substantially the same manner as Example 1, difference is only, the addition of zinc is 25.0wt%, obtained standard testing exemplar A4.
embodiment 5
Raw material and preparation method substantially the same manner as Example 1, difference is only, the addition of zinc is 30.0wt%, obtained standard testing exemplar A5.
embodiment 6
Raw material and preparation method substantially the same manner as Example 1, difference is only, the addition of zinc is 25wt%, the addition of silicon is 5.0wt%, the addition of copper is 5.0wt%, and the addition of titanium is 0.1wt%, and the addition of manganese is 1.0wt%, the addition of rare earth is 0.05wt%, obtained standard testing exemplar A6.
embodiment 7
Raw material and preparation method substantially the same manner as Example 1, difference is only, the addition of zinc is 25wt%, the addition of silicon is 8.0wt%, the addition of copper is 3.0wt%, and the addition of titanium is 0.5wt%, and the addition of manganese is 0.1wt%, the addition of rare earth is 0.2wt%, obtained standard testing exemplar A7.
performance test:
1) chemical composition test:
The aluminium diecast alloy master body A1-A7 prepared by above-described embodiment 1-7 carries out chemical composition detection (ICP test) respectively, and the chemical composition detected result of the aluminium alloy obtained is in table 1.
2) intensity and hardness performance test:
The aluminium diecast alloy master body A1-A7 prepared by above-described embodiment 1-7 carries out strength property test (being tested by omnipotent mechanics machine), hardness performance test (micro Vickers) respectively, and the detected result obtained is in table 2.
Table 1 (massfraction wt%)
Table 2 data of mechanical
Data according to above-mentioned table 1, table 2 can be found out, this aluminium diecast alloy intensity and extreme hardness, and yield strength Performance Ratio ADC12 improves more than 58, and hardness also improves more than 30%.When constituent content each in this alloy is as ratio in embodiment 4, alloy property reaches maximum.
The invention provides a kind of aluminium diecast alloy of high strength and high hardness, the metallic element zinc added in component incorporates in the solute atoms of sosoloid and causes lattice distortion, increase the resistance of dislocation motion, make slippage be difficult to carry out, thus the intensity of alloy and hardness are increased; The metallic element rhenium added in component makes silicon and copper can form with aluminium the second-phase strengthened, and is distributed in matrix phase small and dispersed, produces significant strengthening effect.The rare earth element added in component, forms aluminium rare earth intermetallic compound with aluminium, and the distribution of small and dispersed ground in the base, is played crystal grain thinning function of organization, thus put forward heavy alloyed strength property greatly.By adding metallic element manganese and titanium, can to TiMn 2produce metamorphism mutually, the refinement organized by alloy and to Mg 17al 12rotten the playing of phase is suppressed crackle to be formed or delays the effect of crack propagation, thus puies forward heavy alloyed intensity and hardness.
The aluminium alloy compression casting adopting technical scheme of the present invention to obtain is functional, and there is very high intensity, hardness and toughness, welding property and cutting ability are also good, are the high strength die-casting aluminum alloys that a kind of purposes is wider, are applicable to the aluminium diecast alloy material Application Areas with high strength requirement.
These are only preferred embodiment of the present invention, be not limited to the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (4)

1. a high strength die-casting aluminum alloy, is characterized in that, the weight percent of each component is: Zn:10wt%-30wt%; Si:5.0wt%-8.0wt%; Cu:3.0wt%-5.0wt%; Mn:0.1wt%-1.0wt%; Ti:0.1wt%-0.5wt%; Re:0.05wt%-0.2wt%; Surplus is Al and inevitable impurity.
2. high strength die-casting aluminum alloy according to claim 1, is characterized in that, the weight percent of each component is: Zn:15wt%-25wt%; Si:6.0wt%-7.0wt%; Cu:3.5wt%-4.5wt%; Mn:0.4wt%-0.7wt%; Ti:0.2wt%-0.4wt%; RE:0.1wt%-0.15wt%; Surplus is Al and inevitable impurity.
3. a preparation method for high strength die-casting aluminum alloy as claimed in claim 1 or 2, is characterized in that, comprises the following steps:
1) dry: by ready raw material: fine aluminium Al, pure zinc Zn and other master alloy, carry out drying and processing;
2) melting: first add aluminium ingot in melting, is increased to 730-780 DEG C by temperature, after aluminium ingot melts completely, then adds other master alloy successively, after it melts completely, finally adds pure zinc ingot; After stirring, after insulation 15-25min, refining 20-30min, finally remove slag after scratching in the ashes and cast, pouring temperature controls between 680-720 DEG C, obtained aluminium alloy cast ingot;
3) die casting: the aluminium alloy cast ingot prepared is carried out standard test die casting, and cast temperature controls at 700-750 DEG C, and die temperature controls at 180-230 DEG C, and die casting speed control is at 1.0-3.0m/s; The finally standard testing exemplar of obtained die casting.
4. method according to claim 3, is characterized in that, other master alloy described is made up of aluminium manganese AlMn master alloy, aluminium silicon AlSi master alloy, aluminum bronze AlCu master alloy, aluminium titanium AlTi master alloy and aluminium rhenium AlRe master alloy.
CN201410554545.7A 2014-10-17 2014-10-17 A kind of high strength die-casting aluminum alloy and preparation method thereof Active CN104264020B (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104561691A (en) * 2015-01-26 2015-04-29 上海交通大学 High-plasticity cast aluminum alloy and pressure casting preparation method thereof
CN105316542A (en) * 2015-11-25 2016-02-10 广东鸿图科技股份有限公司 High-strength and high-toughness die-casting aluminum alloy and product thereof
CN105603269A (en) * 2016-01-25 2016-05-25 张颖 Method for manufacturing aluminum automobile gearbox shell
CN105671377A (en) * 2016-01-25 2016-06-15 张颖 Electroplating method of high-strength aluminum alloy for die casting
CN105714162A (en) * 2016-01-25 2016-06-29 张颖 Aluminum automobile transmission shell
CN107385286A (en) * 2017-07-27 2017-11-24 王婷 A kind of pack alloy
CN113046607A (en) * 2021-03-16 2021-06-29 郑州大学 High-hardness high-thermal conductivity multi-element alloy and preparation method thereof
CN115415498A (en) * 2022-09-07 2022-12-02 湛江德利车辆部件有限公司 Preparation method of aluminum alloy die casting
CN115491551A (en) * 2022-09-21 2022-12-20 苏州凯宥电子科技有限公司 Aluminum alloy casting and surface treatment method thereof
CN115927932A (en) * 2022-12-20 2023-04-07 苏州凯宥电子科技有限公司 High-strength die-casting aluminum alloy and preparation method thereof

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JP2007092113A (en) * 2005-09-28 2007-04-12 Denso Corp Aluminum die casting alloy for connector having excellent caulking property, sacrificial anode characteristic and castability, and method for manufacturing connector block made of this alloy
CN103069029A (en) * 2010-05-29 2013-04-24 怡得乐量子有限公司 Aluminum alloy, and aluminum alloy casting
CN103409673A (en) * 2013-08-26 2013-11-27 深圳市天合兴五金塑胶有限公司 High-strength die-cast aluminum-titanium alloy
CN103952609A (en) * 2014-05-12 2014-07-30 马鸿斌 Novel high-zinc aluminium alloy and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007092113A (en) * 2005-09-28 2007-04-12 Denso Corp Aluminum die casting alloy for connector having excellent caulking property, sacrificial anode characteristic and castability, and method for manufacturing connector block made of this alloy
CN103069029A (en) * 2010-05-29 2013-04-24 怡得乐量子有限公司 Aluminum alloy, and aluminum alloy casting
CN103409673A (en) * 2013-08-26 2013-11-27 深圳市天合兴五金塑胶有限公司 High-strength die-cast aluminum-titanium alloy
CN103952609A (en) * 2014-05-12 2014-07-30 马鸿斌 Novel high-zinc aluminium alloy and preparation method thereof

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104561691B (en) * 2015-01-26 2017-02-01 上海交通大学 High-plasticity cast aluminum alloy and pressure casting preparation method thereof
CN104561691A (en) * 2015-01-26 2015-04-29 上海交通大学 High-plasticity cast aluminum alloy and pressure casting preparation method thereof
CN105316542A (en) * 2015-11-25 2016-02-10 广东鸿图科技股份有限公司 High-strength and high-toughness die-casting aluminum alloy and product thereof
CN105714162B (en) * 2016-01-25 2018-07-20 徐州超杰电动车配件有限公司 A kind of aluminum automobile gear box casing
CN105714162A (en) * 2016-01-25 2016-06-29 张颖 Aluminum automobile transmission shell
CN105671377A (en) * 2016-01-25 2016-06-15 张颖 Electroplating method of high-strength aluminum alloy for die casting
CN105671377B (en) * 2016-01-25 2018-05-04 佛山市三水瑞晟通金属制品有限公司 A kind of electro-plating method of high strength alumin ium alloy for die casting
CN105603269A (en) * 2016-01-25 2016-05-25 张颖 Method for manufacturing aluminum automobile gearbox shell
CN107385286A (en) * 2017-07-27 2017-11-24 王婷 A kind of pack alloy
CN113046607A (en) * 2021-03-16 2021-06-29 郑州大学 High-hardness high-thermal conductivity multi-element alloy and preparation method thereof
CN113046607B (en) * 2021-03-16 2022-03-04 郑州大学 High-hardness high-thermal conductivity multi-element alloy and preparation method thereof
CN115415498A (en) * 2022-09-07 2022-12-02 湛江德利车辆部件有限公司 Preparation method of aluminum alloy die casting
CN115415498B (en) * 2022-09-07 2024-05-17 湛江德利车辆部件有限公司 Preparation method of aluminum alloy die casting
CN115491551A (en) * 2022-09-21 2022-12-20 苏州凯宥电子科技有限公司 Aluminum alloy casting and surface treatment method thereof
CN115927932A (en) * 2022-12-20 2023-04-07 苏州凯宥电子科技有限公司 High-strength die-casting aluminum alloy and preparation method thereof
CN115927932B (en) * 2022-12-20 2024-03-15 苏州凯宥电子科技有限公司 High-strength die-casting aluminum alloy and preparation method thereof

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