CN106244874B - A kind of dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body and preparation method thereof - Google Patents
A kind of dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body and preparation method thereof Download PDFInfo
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- CN106244874B CN106244874B CN201610738836.0A CN201610738836A CN106244874B CN 106244874 B CN106244874 B CN 106244874B CN 201610738836 A CN201610738836 A CN 201610738836A CN 106244874 B CN106244874 B CN 106244874B
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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
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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
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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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
- C22F1/053—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 zinc as the next major constituent
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Abstract
The invention discloses a kind of dedicated heat-resisting aluminium alloys of high-speed EMUs gear case body, and ingredient includes: Zn:2-5%, Mg:1.5-2.8%, Mn:0.1-0.8%, Zr:0.5-1.5%, W:0.5-1.5%, V:0.1-0.2%, Be:0.01-0.08%, Ti:0.2-0.5%, Si:0.02-0.1%, Ni:0.05-0.2%, Ga:0.05-0.15%, Fe:0.1-0.3%, Cu:0.2-0.5%, Cr:0.05-0.15%, Sc:0.1-0.5%, Ag:0.3-1.2%, Pr:0.1-0.5%, Y:0.2-0.5%, I by weight percentage N:0.1-0.5%, B:0.1-0.3%, Li:0.5-1.2%, surplus Al.
Description
Technical field
The present invention relates to aluminum alloy materials technical field more particularly to a kind of high-speed EMUs gear case body are dedicated heat-resisting
Aluminium alloy and preparation method thereof.
Background technique
High-speed EMUs driving device for gear box is the key components and parts for guaranteeing bullet train and continually and steadily running, and is train
A part of power truck.Gear-box one end is fixed, and architecturally the other end is mounted on axle, and by shaft coupling and is moved
The traction electric machine of vehicle group, which is connected, realizes power transmission.Existing EMU gear case body mostly uses aluminum alloy materials to be made,
Because existing aluminium alloy is not good defect there are intensity difference, heat resistance, applied to there are cabinets easily to split in gear-box
The risk of line.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of high-speed EMUs gear case body is dedicated resistance to
Hot aluminium alloy and preparation method thereof, the preparation method process is simple, mild condition, and obtained intensity of aluminum alloy is high, heat resistance
Excellent, the good toughness of energy, is able to satisfy the requirement of high-speed EMUs gear case body.
A kind of dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body proposed by the present invention, ingredient is by weight percentage
Include: Zn:2-5%, Mg:1.5-2.8%, Mn:0.1-0.8%, Zr:0.5-1.5%, W:0.5-1.5%, V:0.1-0.2%,
Be:0.01-0.08%, Ti:0.2-0.5%, Si:0.02-0.1%, Ni:0.05-0.2%, Ga:0.05-0.15%, Fe:
0.1-0.3%, Cu:0.2-0.5%, Cr:0.05-0.15%, Sc:0.1-0.5%, Ag:0.3-1.2%, Pr:0.1-0.5%,
Y:0.2-0.5%, In:0.1-0.5%, B:0.1-0.3%, Li:0.5-1.2%, surplus Al.
Preferably, in ingredient, the weight percent of Mg, Y meet following relationship: Y≤0.35%, and 2.6%≤Mg+
Y≤3%.
Preferably, in ingredient, the weight percent of Mg, Mn, Sc meet following relationship: Mg+Mn+Sc >=2.7%.
Preferably, in ingredient, the weight percent of Sc, Zr meet following relationship: Sc+Zr >=1.65%, and Zr >=3
×Sc。
Preferably, ingredient include: by weight percentage Zn:3.2%, Mg:2.57%, Mn:0.13%, Zr:1.5%,
W:1.2%, V:0.16%, Be:0.05%, Ti:0.32%, Si:0.08%, Ni:0.12%, Ga:0.11%, Fe:0.26%,
Cu:0.3%, Cr:0.12%, Sc:0.2%, Ag:1%, Pr:0.14%, Y:0.28%, In:0.13%, B:0.2%, Li:
1%, surplus Al.
A kind of preparation method for dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body that the present invention also proposes, packet
Include following steps:
S1, by zinc powder, magnesium powder, silicon powder, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Iron, beryllium powder, nickel powder, gallium powder, scandium ingot, silver powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is subjected to refinement and deoxidation, is then poured at 600-650 DEG C, soaked after being cooled to 550-570 DEG C
Enter solidification in water and obtains material B；
S3, by material B, solution treatment 2.2-2.8h, then progress water quenching obtain material C at 520-550 DEG C；
It is cooled to room temperature after S4,2-5h that material C anneals at 280-320 DEG C, timeliness is then carried out at 170-200 DEG C
50-65h obtains the dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body after being cooled to room temperature.
Preferably, solidification in ice water is immersed in S2, after being cooled to 550-570 DEG C obtains material B.
Preferably, the preparation method of the dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body, comprising the following steps:
S1, by zinc powder, magnesium powder, silicon powder, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Iron, beryllium powder, nickel powder, gallium powder, scandium ingot, silver powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is subjected to refinement and deoxidation, is then poured at 620 DEG C, immersed in ice water after being cooled to 565 DEG C
Solidification obtains material B；
S3, by material B, solution treatment 2.6h, then progress water quenching obtain material C at 538 DEG C；
It is cooled to room temperature after S4,3.5h that material C anneals at 300 DEG C, timeliness 58h is then carried out at 180 DEG C, it is cooling
The dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body is obtained after to room temperature.
In the preparation method of the dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body, at 600-650 DEG C into
Row casting, is immersed in the water solidification after being subsequently cooled to 550-570 DEG C, so that its core structure of the casting made is predominantly distributed
, there is not solid-liquid segregation phenomena substantially in uniform spherocrystal and nearly spherocrystal composition, significantly improve the intensity of aluminium alloy and tough
Property, later, solid solubility temperature is controlled at 520-550 DEG C, the time controls in 2.2-2.8h, to keep the eutectic Si in system whole
By it is needle-shaped and it is rodlike be changed into spherical or close spherical, and obviously refined, meanwhile, the θ (CuAl in eutectic structure2) mutually analyse
Object is completely disappeared and is dissolved in a-Al matrix out, further improves the intensity and toughness of aluminium alloy.
Mg, Si and Cu are added in ingredient for the dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body of the present invention, and
Its content in system is had adjusted, makes to form in system while holding aluminium alloy excellent corrosion stability more tiny more
Add uniform Mg2Si phase enhances intensity, the heat resistance of aluminum alloy materials, reduces the thermal expansion coefficient of aluminium alloy, adds simultaneously
Ni element is entered to be cooperated with Cu, has significantly improved the plasticity of aluminum alloy materials, it is therefore prevented that it cracks；Be added micro Mn and
Cr can generate disperse phase, inhibit alloy recrystallization, improve alloy strength, increase alloy anti intercrystalline corrosion ability, improve alloy properties
Energy；It joined Y, while the weight percent of Mg, Y being made to meet relational expression: Y≤0.35%, and 2.6%≤Mg+Y≤3%, thus
Have adjusted the Mg formed in system2Y assigns aluminium alloy excellent corrosion resistance and high-temperature creep resistance；It joined Sc,
The weight percent for having adjusted Mg, Mn, Sc simultaneously meets relational expression: Mg+Mn+Sc >=2.7%, to form in system
MgMnSc6、MgMnSc15And Al6Mn disperse phase can strengthen matrix more significantly, while significantly improve the high temperature of aluminium alloy
Croop property；It joined Pr and Y, to inhibit θ-Al in system13Cr2Generation, form with preferable thermal stability
RECr2Al20Particle significantly improves the heat resistance and intensity of aluminium alloy；It joined Ga, Ag and Sn in system, and control
Ratio of the three in aluminium alloy, makes three's collective effect, improves the corrosion resistance of aluminium alloy, significantly changes after cooperating with Pr, Y
It has been apt to the heat resistance, intensity and toughness of aluminium alloy, has assigned aluminium alloy excellent anti-cracking performance.
Performance detection, maximum tension are carried out to the dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body of the present invention
Intensity is 356-421MPa, and corresponding maximum extension rate is 7.5-8.3%, microhardness 132-142HV.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body proposed by the present invention, ingredient is by weight percentage
Include: Zn:5%, Mg:1.5%, Mn:0.8%, Zr:1.5%, W:0.5%, V:0.2%, Be:0.01%, Ti:0.5%, Si:
0.02%, Ni:0.2%, Ga:0.05%, Fe:0.3%, Cu:0.2%, Cr:0.15%, Sc:0.1%, Ag:1.2%, Pr:
0.1%, Y:0.5%, In:0.1%, B:0.3%, Li:0.5%, surplus Al.
A kind of preparation method for dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body that the present invention also proposes, packet
Include following steps:
S1, by zinc powder, magnesium powder, silicon powder, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Iron, beryllium powder, nickel powder, gallium powder, scandium ingot, silver powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is subjected to refinement and deoxidation, is then poured at 650 DEG C, is immersed in the water after being cooled to 550 DEG C solidifying
Admittedly obtaining material B；
S3, by material B, solution treatment 2.2h, then progress water quenching obtain material C at 550 DEG C；
It is cooled to room temperature after S4,2h that material C anneals at 320 DEG C, timeliness 50h is then carried out at 200 DEG C, is cooled to
The dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body is obtained after room temperature.
Embodiment 2
A kind of dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body proposed by the present invention, ingredient is by weight percentage
Include: Zn:2%, Mg:2.8%, Mn:0.1%, Zr:0.5%, W:1.5%, V:0.1%, Be:0.08%, Ti:0.2%, Si:
0.1%, Ni:0.05%, Ga:0.15%, Fe:0.1%, Cu:0.5%, Cr:0.05%, Sc:0.5%, Ag:0.3%, Pr:
0.5%, Y:0.2%, In:0.5%, B:0.1%, Li:1.2%, surplus Al.
A kind of preparation method for dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body that the present invention also proposes, packet
Include following steps:
S1, by zinc powder, magnesium powder, silicon powder, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Iron, beryllium powder, nickel powder, gallium powder, scandium ingot, silver powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is subjected to refinement and deoxidation, is then poured at 600 DEG C, is immersed in the water after being cooled to 570 DEG C solidifying
Admittedly obtaining material B；
S3, by material B, solution treatment 2.8h, then progress water quenching obtain material C at 520 DEG C；
It is cooled to room temperature after S4,5h that material C anneals at 280 DEG C, timeliness 65h is then carried out at 170 DEG C, is cooled to
The dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body is obtained after room temperature.
Embodiment 3
A kind of dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body proposed by the present invention, ingredient is by weight percentage
Include: Zn:4.3%, Mg:2.45%, Mn:0.2%, Zr:1.5%, W:0.9%, V:0.17%, Be:0.03%, Ti:
0.37%, Si:0.07%, Ni:0.16%, Ga:0.07%, Fe:0.26%, Cu:0.27%, Cr:0.13%, Sc:0.15%,
Ag:0.7%, Pr:0.4%, Y:0.26%, In:0.17%, B:0.22%, Li:0.87%, surplus Al.
A kind of preparation method for dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body that the present invention also proposes, packet
Include following steps:
S1, by zinc powder, magnesium powder, silicon powder, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Iron, beryllium powder, nickel powder, gallium powder, scandium ingot, silver powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is subjected to refinement and deoxidation, is then poured under 643, solidification is immersed in the water after being cooled to 565 DEG C
Obtain material B；
S3, by material B, solution treatment 2.5h, then progress water quenching obtain material C at 530 DEG C；
It is cooled to room temperature after S4,2.8h that material C anneals at 310 DEG C, timeliness 60h is then carried out at 180 DEG C, it is cooling
The dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body is obtained after to room temperature.
Embodiment 4
A kind of dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body proposed by the present invention, ingredient is by weight percentage
Include: Zn:2.6%, Mg:2.25%, Mn:0.3%, Zr:1.3%, W:1.3%, V:0.14%, Be:0.06%, Ti:
0.28%, Si:0.04%, Ni:0.1%, Ga:0.11%, Fe:0.14%, Cu:0.41%, Cr:0.09%, Sc:0.4%,
Ag:1%, Pr:0.19%, Y:0.42%, In:0.38%, B:0.15%, Li:1.06%, surplus Al.
A kind of preparation method for dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body that the present invention also proposes, packet
Include following steps:
S1, by zinc powder, magnesium powder, silicon powder, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Iron, beryllium powder, nickel powder, gallium powder, scandium ingot, silver powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is subjected to refinement and deoxidation, is then poured at 615 DEG C, is immersed in the water after being cooled to 560 DEG C solidifying
Admittedly obtaining material B；
S3, by material B, solution treatment 2.6h, then progress water quenching obtain material C at 545 DEG C；
It is cooled to room temperature after S4,3.8h that material C anneals at 292 DEG C, timeliness 62h is then carried out at 175 DEG C, it is cooling
The dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body is obtained after to room temperature.
Embodiment 5
A kind of dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body proposed by the present invention, ingredient is by weight percentage
Include: Zn:3.2%, Mg:2.57%, Mn:0.13%, Zr:1.5%, W:1.2%, V:0.16%, Be:0.05%, Ti:
0.32%, Si:0.08%, Ni:0.12%, Ga:0.11%, Fe:0.26%, Cu:0.3%, Cr:0.12%, Sc:0.2%,
Ag:1%, Pr:0.14%, Y:0.28%, In:0.13%, B:0.2%, Li:1%, surplus Al；
A kind of preparation method for dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body that the present invention also proposes, packet
Include following steps:
S1, by zinc powder, magnesium powder, silicon powder, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Iron, beryllium powder, nickel powder, gallium powder, scandium ingot, silver powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is subjected to refinement and deoxidation, is then poured at 620 DEG C, immersed in ice water after being cooled to 565 DEG C
Solidification obtains material B；
S3, by material B, solution treatment 2.6h, then progress water quenching obtain material C at 538 DEG C；
It is cooled to room temperature after S4,3.5h that material C anneals at 300 DEG C, timeliness 58h is then carried out at 180 DEG C, it is cooling
The dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body is obtained after to room temperature.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (2)
1. a kind of dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body, which is characterized in that its ingredient wraps by weight percentage
Include: Zn:2-5%, Mg:1.5-2.8%, Mn:0.1-0.8%, Zr:0.5-1.5%, W:0.5-1.5%, V:0.1-0.2%,
Be:0.01-0.08%, Ti:0.2-0.5%, Si:0.02-0.1%, Ni:0.05-0.2%, Ga:0.05-0.15%, Fe:
0.1-0.3%, Cu:0.2-0.5%, Cr:0.05-0.15%, Sc:0.1-0.5%, Ag:0.3-1.2%, Pr:0.1-0.5%,
Y:0.2-0.35%, In:0.1-0.5%, B:0.1-0.3%, Li:0.5-1.2%, surplus Al；Wherein, the weight hundred of Mg, Y
Ratio is divided to meet following relationship: 2.6%≤Mg+Y≤3%；The weight percent of Mg, Mn, Sc meet following relationship: Mg+Mn+
Sc >=2.7%；The weight percent of Sc, Zr meet following relationship: Sc+Zr >=1.65%, and Zr >=3 × Sc.
2. the dedicated heat-resisting aluminium alloy of high-speed EMUs gear case body according to claim 1, which is characterized in that its ingredient is pressed
Weight percent includes: Zn:3.2%, Mg:2.57%, Mn:0.13%, Zr:1.5%, W:1.2%, V:0.16%, Be:
0.05%, Ti:0.32%, Si:0.08%, Ni:0.12%, Ga:0.11%, Fe:0.26%, Cu:0.3%, Cr:0.12%,
Sc:0.2%, Ag:1%, Pr:0.14%, Y:0.28%, In:0.13%, B:0.2%, Li:1%, surplus Al.
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| CN107164665B (en) * | 2017-04-28 | 2019-01-29 | 浙江大侠铝业有限公司 | High tenacity Alcoa profile and its preparation process |
| CN107619967A (en) * | 2017-08-31 | 2018-01-23 | 太仓市腾友精密机械有限公司 | A kind of handware high-temperature-resistant, tensile aluminium alloy |
| CN107641737A (en) * | 2017-08-31 | 2018-01-30 | 太仓市腾友精密机械有限公司 | A kind of handware wear-resistant aluminum alloy |
| CN107739926A (en) * | 2017-09-26 | 2018-02-27 | 缪彬彬 | A kind of aluminium zinc-copper magnesium alloy and its processing technology |
| CN108034873A (en) * | 2017-11-20 | 2018-05-15 | 湖州亨达铝业有限公司 | A kind of Al-6%Cu alloys of low hot cracking tendency and preparation method thereof |
| CN108048711A (en) * | 2017-12-28 | 2018-05-18 | 安徽鑫铂铝业股份有限公司 | A kind of high ferro high-strength corrosion-resistant aluminium alloy extrusions and preparation method thereof |
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| JP2014506837A (en) * | 2011-02-18 | 2014-03-20 | コンステリウム フランス | Aluminum alloy semi-finished product with improved microporosity and manufacturing method |
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| CN105401007A (en) * | 2015-11-12 | 2016-03-16 | 郭芙 | Material for casting thin aluminum alloy and preparing method |
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| JP2014506837A (en) * | 2011-02-18 | 2014-03-20 | コンステリウム フランス | Aluminum alloy semi-finished product with improved microporosity and manufacturing method |
| CN104711463A (en) * | 2015-03-17 | 2015-06-17 | 中南大学 | Al-Mg-Zn-Li alloy and preparation method for alloy plate |
| CN105401007A (en) * | 2015-11-12 | 2016-03-16 | 郭芙 | Material for casting thin aluminum alloy and preparing method |
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