CN106244874A - A kind of special heat-resisting aluminium alloy of EMU gear case body and preparation method thereof - Google Patents
A kind of special heat-resisting aluminium alloy of EMU gear case body and preparation method thereof Download PDFInfo
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- CN106244874A CN106244874A CN201610738836.0A CN201610738836A CN106244874A CN 106244874 A CN106244874 A CN 106244874A CN 201610738836 A CN201610738836 A CN 201610738836A CN 106244874 A CN106244874 A CN 106244874A
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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
Abstract
nullThe invention discloses a kind of special heat-resisting aluminium alloy of EMU gear case body，Its composition includes by weight percentage: 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 is Al.
Description
Technical field
The present invention relates to aluminum alloy materials technical field, particularly relate to a kind of EMU gear case body special heat-resisting
Aluminium alloy and preparation method thereof.
Background technology
EMU driving device for gear box is to ensure that the key components and parts that bullet train runs continually and steadily, is train
A part for power truck.Gear-box one end is fixing, and architecturally the other end is arranged on axletree, and by shaft coupling with dynamic
The traction electric machine of car group is connected and realizes power transmission.Existing EMUs gear case body many employings aluminum alloy materials is made,
It not good defect because existing aluminium alloy exists intensity difference, thermostability, be applied in gear-box there is casing and easily split
The risk of stricture of vagina.
Summary of the invention
The technical problem existed based on background technology, it is special resistance to that the present invention proposes a kind of EMU gear case body
Hot aluminium alloy and preparation method thereof, described preparation method process is simple, mild condition, and the intensity of aluminum alloy obtained is high, thermostability
Can be excellent, good toughness, the use requirement of EMU gear case body can be met.
A kind of special heat-resisting aluminium alloy of EMU gear case body that the present invention proposes, its composition is by weight percentage
Including: 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 are Al.
Preferably, in its composition, the percentage by weight of Mg, Y meets relationship below: Y≤0.35%, and 2.6%≤Mg+
Y≤3%.
Preferably, in its composition, the percentage by weight of Mg, Mn, Sc meets relationship below: Mg+Mn+Sc >=2.7%.
Preferably, in its composition, the percentage by weight of Sc, Zr meets relationship below: Sc+Zr >=1.65%, and Zr >=3
×Sc。
Preferably, its composition includes 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 is Al.
The preparation method of a kind of described special heat-resisting aluminium alloy of EMU gear case body that the present invention also proposes, bag
Include following steps:
S1, by zinc powder, magnesium powder, silica flour, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Ferrum, beryllium powder, nikel powder, gallium powder, scandium ingot, argentum powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is carried out refinement and deoxidation, then pour into a mould at 600-650 DEG C, soak after being cooled to 550-570 DEG C
Enter solidification in water and obtain material B；
S3, by material B solution treatment 2.2-2.8h at 520-550 DEG C, then carry out shrend and obtain material C；
It is cooled to room temperature after S4, the 2-5h that annealed at 280-320 DEG C by material C, at 170-200 DEG C, then carries out timeliness
50-65h, obtains the described special heat-resisting aluminium alloy of EMU gear case body after being cooled to room temperature.
Preferably, in S2, immerse solidification in frozen water after being cooled to 550-570 DEG C and obtain material B.
Preferably, the preparation method of the described special heat-resisting aluminium alloy of EMU gear case body, comprise the following steps:
S1, by zinc powder, magnesium powder, silica flour, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Ferrum, beryllium powder, nikel powder, gallium powder, scandium ingot, argentum powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is carried out refinement and deoxidation, then pour into a mould at 620 DEG C, immerse in frozen water after being cooled to 565 DEG C
Solidification obtains material B；
S3, by material B solution treatment 2.6h at 538 DEG C, then carry out shrend and obtain material C；
It is cooled to room temperature after S4, the 3.5h that annealed at 300 DEG C by material C, at 180 DEG C, then carries out timeliness 58h, cooling
The described special heat-resisting aluminium alloy of EMU gear case body is obtained to room temperature.
In the preparation method of the described special heat-resisting aluminium alloy of EMU gear case body, enter at 600-650 DEG C
Row cast, is immersed in the water solidification after being subsequently cooled to 550-570 DEG C, so that the predominantly distribution of its core structure of the foundry goods arrived
, the most there is not solid-liquid segregation phenomena in uniform spherocrystal and nearly spherocrystal composition, significantly improves the intensity of aluminium alloy and tough
Property, afterwards, solid solubility temperature being controlled at 520-550 DEG C, the time controls at 2.2-2.8h, so that the eutectic Si in system is whole
By needle-like with bar-shaped be changed into spherical or the most spherical, and substantially refined, meanwhile, the θ (CuAl in eutectic structure2) analyse mutually
Go out thing be wholly absent and dissolve in a-Al matrix, further increase intensity and the toughness of aluminium alloy.
The special heat-resisting aluminium alloy of EMU gear case body of the present invention, adds Mg, Si and Cu in its composition, and
Have adjusted its content in system, make system defines the most tiny more while keeping the excellent corrosion stability of aluminium alloy
Add uniform Mg2Si phase, enhances the intensity of aluminum alloy materials, thermostability, reduces the thermal coefficient of expansion of aluminium alloy, adds simultaneously
Enter Ni element to coordinate with Cu, significantly improved the plasticity of aluminum alloy materials, it is therefore prevented that its cracking；Add trace Mn and
Cr, can produce disperse phase, suppresses alloy recrystallization, improves alloy strength, increases Alloy Anti intercrystalline corrosion ability, improves alloy properties
Energy；Add Y, make the percentage by weight of Mg, Y meet relational expression: Y≤0.35%, and 2.6%≤Mg+Y≤3% simultaneously, thus
Have adjusted the Mg formed in system2Y, give aluminium alloy excellent corrosion resistance and high-temperature creep resistance；Add Sc,
Have adjusted the percentage by weight of Mg, Mn, Sc simultaneously and meet relational expression: Mg+Mn+Sc >=2.7%, thus define in system
MgMnSc6、MgMnSc15And Al6Mn disperse phase, can significantly more strengthen matrix, significantly improve the high temperature of aluminium alloy simultaneously
Croop property；Add Pr and Y, thus inhibit θ-Al in system13Cr2Generation, define and there is preferable heat stability
RECr2Al20Granule, significantly improves thermostability and the intensity of aluminium alloy；In system, add Ga, Ag and Sn, and control
Three's ratio in aluminium alloy, makes three jointly act on, and improves the corrosion resistance of aluminium alloy, significantly changes after coordinating with Pr, Y
It is apt to the thermostability of aluminium alloy, intensity and toughness, gives the anti-cracking performance that aluminium alloy is excellent.
The special heat-resisting aluminium alloy of EMU gear case body of the present invention is carried out performance detection, its maximum tension
Intensity is 356-421MPa, and corresponding maximum elongation percentage is 7.5-8.3%, and microhardness is 132-142HV.
Detailed description of the invention
Below, by specific embodiment, technical scheme is described in detail.
Embodiment 1
A kind of special heat-resisting aluminium alloy of EMU gear case body that the present invention proposes, its composition is by weight percentage
Including: 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 are Al.
The preparation method of a kind of described special heat-resisting aluminium alloy of EMU gear case body that the present invention also proposes, bag
Include following steps:
S1, by zinc powder, magnesium powder, silica flour, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Ferrum, beryllium powder, nikel powder, gallium powder, scandium ingot, argentum powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is carried out refinement and deoxidation, then pour into a mould at 650 DEG C, be immersed in the water solidifying after being cooled to 550 DEG C
Admittedly obtain material B；
S3, by material B solution treatment 2.2h at 550 DEG C, then carry out shrend and obtain material C；
It is cooled to room temperature after S4, the 2h that annealed at 320 DEG C by material C, at 200 DEG C, then carries out timeliness 50h, be cooled to
The described special heat-resisting aluminium alloy of EMU gear case body is obtained after room temperature.
Embodiment 2
A kind of special heat-resisting aluminium alloy of EMU gear case body that the present invention proposes, its composition is by weight percentage
Including: 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 are Al.
The preparation method of a kind of described special heat-resisting aluminium alloy of EMU gear case body that the present invention also proposes, bag
Include following steps:
S1, by zinc powder, magnesium powder, silica flour, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Ferrum, beryllium powder, nikel powder, gallium powder, scandium ingot, argentum powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is carried out refinement and deoxidation, then pour into a mould at 600 DEG C, be immersed in the water solidifying after being cooled to 570 DEG C
Admittedly obtain material B；
S3, by material B solution treatment 2.8h at 520 DEG C, then carry out shrend and obtain material C；
It is cooled to room temperature after S4, the 5h that annealed at 280 DEG C by material C, at 170 DEG C, then carries out timeliness 65h, be cooled to
The described special heat-resisting aluminium alloy of EMU gear case body is obtained after room temperature.
Embodiment 3
A kind of special heat-resisting aluminium alloy of EMU gear case body that the present invention proposes, its composition is by weight percentage
Including: 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 are Al.
The preparation method of a kind of described special heat-resisting aluminium alloy of EMU gear case body that the present invention also proposes, bag
Include following steps:
S1, by zinc powder, magnesium powder, silica flour, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Ferrum, beryllium powder, nikel powder, gallium powder, scandium ingot, argentum powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is carried out refinement and deoxidation, then pour into a mould at 643 times, after being cooled to 565 DEG C, be immersed in the water solidification
Obtain material B；
S3, by material B solution treatment 2.5h at 530 DEG C, then carry out shrend and obtain material C；
It is cooled to room temperature after S4, the 2.8h that annealed at 310 DEG C by material C, at 180 DEG C, then carries out timeliness 60h, cooling
The described special heat-resisting aluminium alloy of EMU gear case body is obtained to room temperature.
Embodiment 4
A kind of special heat-resisting aluminium alloy of EMU gear case body that the present invention proposes, its composition is by weight percentage
Including: 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 are Al.
The preparation method of a kind of described special heat-resisting aluminium alloy of EMU gear case body that the present invention also proposes, bag
Include following steps:
S1, by zinc powder, magnesium powder, silica flour, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Ferrum, beryllium powder, nikel powder, gallium powder, scandium ingot, argentum powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is carried out refinement and deoxidation, then pour into a mould at 615 DEG C, be immersed in the water solidifying after being cooled to 560 DEG C
Admittedly obtain material B；
S3, by material B solution treatment 2.6h at 545 DEG C, then carry out shrend and obtain material C；
It is cooled to room temperature after S4, the 3.8h that annealed at 292 DEG C by material C, at 175 DEG C, then carries out timeliness 62h, cooling
The described special heat-resisting aluminium alloy of EMU gear case body is obtained to room temperature.
Embodiment 5
A kind of special heat-resisting aluminium alloy of EMU gear case body that the present invention proposes, its composition is by weight percentage
Including: 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 are Al；
The preparation method of a kind of described special heat-resisting aluminium alloy of EMU gear case body that the present invention also proposes, bag
Include following steps:
S1, by zinc powder, magnesium powder, silica flour, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium
Ferrum, beryllium powder, nikel powder, gallium powder, scandium ingot, argentum powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is carried out refinement and deoxidation, then pour into a mould at 620 DEG C, immerse in frozen water after being cooled to 565 DEG C
Solidification obtains material B；
S3, by material B solution treatment 2.6h at 538 DEG C, then carry out shrend and obtain material C；
It is cooled to room temperature after S4, the 3.5h that annealed at 300 DEG C by material C, at 180 DEG C, then carries out timeliness 58h, cooling
The described special heat-resisting aluminium alloy of EMU gear case body is obtained to room temperature.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (8)
1. the special heat-resisting aluminium alloy of EMU gear case body, it is characterised in that its composition 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:0.2-0.5%, In:0.1-0.5%, B:0.1-0.3%, Li:0.5-1.2%, surplus are Al.
The special heat-resisting aluminium alloy of EMU gear case body the most according to claim 1, it is characterised in that its composition
In, the percentage by weight of Mg, Y meets relationship below: Y≤0.35%, and 2.6%≤Mg+Y≤3%.
The special heat-resisting aluminium alloy of EMU gear case body the most according to claim 1 or claim 2, it is characterised in that it becomes
In Fen, the percentage by weight of Mg, Mn, Sc meets relationship below: Mg+Mn+Sc >=2.7%.
4., according to the special heat-resisting aluminium alloy of EMU gear case body according to any one of claim 1-3, its feature exists
In, in its composition, the percentage by weight of Sc, Zr meets relationship below: Sc+Zr >=1.65%, and Zr >=3 × Sc.
5., according to the special heat-resisting aluminium alloy of EMU gear case body according to any one of claim 1-4, its feature exists
In, its composition includes 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 are
Al。
6. the preparation side of the special heat-resisting aluminium alloy of EMU gear case body as according to any one of claim 1-5
Method, it is characterised in that comprise the following steps:
S1, by zinc powder, magnesium powder, silica flour, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium iron, beryllium
Powder, nikel powder, gallium powder, scandium ingot, argentum powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is carried out refinement and deoxidation, then pour into a mould at 600-650 DEG C, after being cooled to 550-570 DEG C, immerse water
Middle solidification obtains material B；
S3, by material B solution treatment 2.2-2.8h at 520-550 DEG C, then carry out shrend and obtain material C；
It is cooled to room temperature after S4, the 2-5h that annealed at 280-320 DEG C by material C, at 170-200 DEG C, then carries out timeliness 50-
65h, obtains the described special heat-resisting aluminium alloy of EMU gear case body after being cooled to room temperature.
The most according to claim 6, the preparation method of the special heat-resisting aluminium alloy of EMU gear case body, its feature exists
In, in S2, immerse solidification in frozen water after being cooled to 550-570 DEG C and obtain material B.
8. according to the preparation method of the special heat-resisting aluminium alloy of EMU gear case body, its feature described in claim 6 or 7
It is, comprises the following steps:
S1, by zinc powder, magnesium powder, silica flour, titanium ingot, iron powder, boron powder, copper billet, indium ingot, chromium powder, manganese powder, zirconium powder, tungsten powder, vanadium iron, beryllium
Powder, nikel powder, gallium powder, scandium ingot, argentum powder, praseodymium powder, yttrium ingot, lithium powder carry out melting and obtain material A；
S2, material A is carried out refinement and deoxidation, then pour into a mould at 620 DEG C, immerse in frozen water after being cooled to 565 DEG C and solidify
Obtain material B；
S3, by material B solution treatment 2.6h at 538 DEG C, then carry out shrend and obtain material C；
It is cooled to room temperature after S4, the 3.5h that annealed at 300 DEG C by material C, at 180 DEG C, then carries out timeliness 58h, be cooled to room
The described special heat-resisting aluminium alloy of EMU gear case body is obtained after temperature.
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| 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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