CN104046864B - A kind of high-thermal-conductivity low-expansibility coefficient rare earth aluminium alloy transmission material and preparation method thereof - Google Patents
A kind of high-thermal-conductivity low-expansibility coefficient rare earth aluminium alloy transmission material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of preparation method of high-thermal-conductivity low-expansibility coefficient rare earth aluminium alloy transmission material, the aluminum alloy materials are made up of the element of following percentage by weight:Cu 2.6 3.8, Ni 1.0 1.5, Sn 0.4 0.6, Co 0.25 0.45, Rh 0.1 0.3, Si 0.2 0.4, Zr 0.05 0.15, Fe 0.3 0.5, Ti 0.1 0.2, Ag 1.4 2.2, Ce 0.05 0.15, Eu 0.04 0.08, Yb 0.03 0.06, balance of Al.Between 195 230W/mK, thermal coefficient of expansion is 2.5 × 10 for obtained aluminum alloy materials thermal conductivity of the invention‑6‑4×10‑6Between/K, at the same conductive good, intensity is high, corrosion-resistant, easy processing, long lifespan the advantages of, can be widely applied to making electronics industry transmission material.
Description
Technical field
The present invention relates to a kind of preparation method of high-thermal-conductivity low-expansibility coefficient rare earth aluminium alloy transmission material, belong to aluminium alloy
Materials processing technology field.
Background technology
Aluminium and aluminium alloy have excellent electric conductivity, intensity high, lightweight, are widely used in electronics industry
The connecting material of transmission material, such as electronic unit, integrated wire blaster fuse frame material, it is integrated with the development of electronics industry
Circuit can not meet requirement to high performance, the development of miniaturization, the heat conductivility of traditional aluminum alloy materials, cause heat swollen
Swollen coefficient is higher, easily causes the generation of creep, fatigue and fracture.Therefore, a kind of high-thermal-conductivity low-expansibility coefficient rare earth aluminium is developed
Alloy transmission material is too impatient to wait.
The content of the invention
In order to solve the deficiencies in the prior art, it is an object of the invention to provide a kind of high-thermal-conductivity low-expansibility coefficient rare earth aluminium
Alloy transmission material and preparation method thereof.The aluminum alloy materials thermal conductivity be 195-230W/mK, thermal coefficient of expansion be 2.5 ×
10-6-4×10-6/K。
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of preparation method of high-thermal-conductivity low-expansibility coefficient rare earth aluminium alloy transmission material, comprises the following steps：
（1）By Al-4.0wt%Cu-2wt%Ni-0.5wt%Co-0.7wt%Sn-0.4wt%Rh alloying component dispensings, then will
Load weighted fine aluminium is added in melting furnace, is heated to 720-740 DEG C, treats fine aluminium melting down more than 80%, and temperature adjustment is pressed to 745-765 DEG C
Cu, Ni, Co, Rh, Sn sequentially add alloying component, stirring, and refining is skimmed, and is stood, cast of coming out of the stove, and pouring temperature is 710-730
DEG C, obtain Al-Cu-Ni-Co-Sn-Rh alloys；
（2）2-3 in mass ratio:1 takes heating during fine aluminium and aluminium scrap add melting furnace as base-material melts, when temperature reaches
At 725-745 DEG C, step is added（1）Obtained Al-Cu-Ni-Co-Sn-Rh alloys, after it all melts, temperature adjustment to 745-
765 DEG C, the alloying components such as Fe, Ti, Ag, Zr are added, temperature adjustment adds the refining of liquation weight 1-2% to 730-750 DEG C after fusing
Agent refines 15-20min, and temperature adjustment adds norium to 740-760 DEG C after skimming, and 10-15min is stirred after fusing, samples
Analysis, adjusting component so that the percentage by weight of each element composition meets the following requirements in aluminium alloy：Cu 2.6-3.8、Ni
1.0-1.5、Sn 0.4-0.6、Co 0.25-0.45、Rh 0.1-0.3、Zr 0.05-0.15、Fe 0.3-0.5、Ti 0.1-
0.2nd, Ag 1.4-2.2, Ce 0.05-0.15, Eu 0.04-0.08, Yb 0.03-0.06, balance of Al；After standing 15-20min
Come out of the stove cast, pouring temperature is 700-720 DEG C, then is made required aluminum alloy materials by casting and rolling process；
（3）Aluminum alloy materials obtained above are heat-treated：280-320 DEG C first is warming up to 100-150 DEG C/h, is protected
Warm 2-3h, then 510-530 DEG C is warming up to 150-200 DEG C/h, 0.5-1h is incubated, put people 0-5 after air-cooled to 200-250 DEG C of high wind
Less than 50 DEG C are cooled in DEG C frozen water, are then taken out and is warming up to 160-220 DEG C with 80-120 DEG C/h, be incubated 5-10h, then with 30-
60 DEG C/h is cooled to 100-120 DEG C, is incubated 10-15h, is air cooled to after room temperature and is warming up to 80-90 DEG C with 35-55 DEG C/h, is incubated 15-
20h, is air cooled to room temperature.
The preparation method of the refining agent is as follows：A, the raw material for taking following weight portion：Sodium chloride 40-50, potassium chloride 25-
35th, dolomite 10-15, pyrophillite 8-12, shepardite 10-15, diatomite 5-10, glauber salt 4-8, soda ash 3-6, cryolite powder 7-
11st, carnallite powder 6-9, refractory brick bits 4-8；B, take dolomite, pyrophillite, shepardite, diatomite be well mixed, 1180-1240
DEG C calcining 2-3h, water quenching, crush, grinding, cross 80-100 mesh sieves, it is stand-by；B, sodium chloride and potassium chloride are well mixed, be heated to
805-825 DEG C, after after its all melting, powder obtained in step a is added, stir 3-5min, powder is ground into again after standing condensation
Last shape, is well mixed with remaining material, grinding, crosses 100-150 mesh sieves.
Beneficial effect of the present invention：
The rare earth elements such as Ce, Eu, Yb are added in aluminium alloy of the present invention, the refinement of aluminium alloy grain structure can be caused,
Improve the texture structure of aluminium alloy, so as to improve thermal conductivity, reduce thermal coefficient of expansion, the obtained aluminum alloy materials of the present invention
Between 195-230W/mK, thermal coefficient of expansion is 2.5 × 10 for thermal conductivity-6-4×10-6Between/K, while conductive
Well, the advantages of intensity high, corrosion-resistant, easy processing, long lifespan, can be widely applied to making electronics industry transmission material.
Specific embodiment
A kind of preparation method of high-thermal-conductivity low-expansibility coefficient rare earth aluminium alloy transmission material, comprises the following steps：
（1）By Al-4.0wt%Cu-2wt%Ni-0.5wt%Co-0.7wt%Sn-0.4wt%Rh alloying component dispensings, then will
Load weighted fine aluminium is added in melting furnace, is heated to 730 DEG C, treats fine aluminium melting down more than 80%, temperature adjustment to 755 DEG C, by Cu, Ni,
Co, Rh, Sn sequentially add alloying component, stirring, and refining is skimmed, and is stood, cast of coming out of the stove, and pouring temperature is 720 DEG C, obtains Al-
Cu-Ni-Co-Sn-Rh alloys；
（2）In mass ratio 3:1 takes heating during fine aluminium and aluminium scrap add melting furnace as base-material melts, when temperature reaches 735
DEG C when, add step（1）Obtained Al-Cu-Ni-Co-Sn-Rh alloys, after after its all fusing, temperature adjustment is added to 755 DEG C
The alloying components such as Fe, Ti, Ag, Zr, temperature adjustment adds the refining agent refining 20min of liquation weight 1.5% to 740 DEG C after fusing, takes off
Temperature adjustment adds norium to 750 DEG C after slag, 15min, sampling analysis, adjusting component is stirred after fusing so that aluminium alloy
The percentage by weight of middle each element composition meets the following requirements：Cu 2.6-3.8、Ni 1.0-1.5、Sn 0.4-0.6、Co
0.25-0.45、Rh 0.1-0.3、Zr 0.05-0.15、Fe 0.3-0.5、Ti 0.1-0.2、Ag 1.4-2.2、Ce 0.05-
0.15th, Eu 0.04-0.08, Yb 0.03-0.06, balance of Al；Come out of the stove cast after standing 20min, pouring temperature is 710 DEG C,
Required aluminum alloy materials are made by casting and rolling process again；
（3）Aluminum alloy materials obtained above are heat-treated：320 DEG C first are warming up to 150 DEG C/h, 2h is incubated, then
530 DEG C are warming up to 200 DEG C/h, are incubated 0.5h, to be put after air-cooled to 200 DEG C of high wind and be cooled to less than 50 DEG C in 1 DEG C of frozen water of people, so
After take out and be warming up to 220 DEG C with 100 DEG C/h, be incubated 8h, then 110 DEG C are cooled to 50 DEG C/h, 12h is incubated, after being air cooled to room temperature
90 DEG C are warming up to 45 DEG C/h, 15h is incubated, room temperature is air cooled to.
The preparation method of the refining agent is as follows：A, the raw material for taking following weight portion：Sodium chloride 45, potassium chloride 30, white clouds
Stone 12, pyrophillite 10, shepardite 10, diatomite 8, glauber salt 6, soda ash 4, cryolite powder 9, carnallite powder 7, refractory brick bits 5；
B, take dolomite, pyrophillite, shepardite, diatomite be well mixed, 1220 DEG C calcining 2h, water quenching, crush, grinding, cross 100 mesh
Sieve, it is stand-by；B, sodium chloride and potassium chloride are well mixed, are heated to 810 DEG C, after after its all melting, added obtained in step a
Powder, stirs 4min, crushes powdered again after standing condensation, is well mixed with remaining material, grinds, and crosses 150 mesh sieves.
The main performance of obtained aluminum alloy materials is as shown in the table：
| Project | As a result |
| Tensile strength | 539MPa |
| Elongation percentage | 11.6% |
| Electric conductivity | 91%IACS |
| Thermal conductivity | 226W/m·K |
| Thermal coefficient of expansion |
Claims (2)
1. a kind of preparation method of high-thermal-conductivity low-expansibility coefficient rare earth aluminium alloy transmission material, it is characterised in that including following step
Suddenly：
（1）By Al-4.0wt%Cu-2wt%Ni-0.5wt%Co-0.7wt%Sn-0.4wt%Rh alloying component dispensings, then will weigh
Good fine aluminium is added in melting furnace, is heated to 720-740 DEG C, treats fine aluminium melting down more than 80%, temperature adjustment to 745-765 DEG C, by Cu,
Ni, Co, Rh, Sn sequentially add alloying component, stirring, and refining is skimmed, and is stood, cast of coming out of the stove, and pouring temperature is 710-730 DEG C,
Obtain Al-Cu-Ni-Co-Sn-Rh alloys；
（2）2-3 in mass ratio:1 takes heating during fine aluminium and aluminium scrap add melting furnace as base-material melts, when temperature reaches 725-
At 745 DEG C, step is added（1）Obtained Al-Cu-Ni-Co-Sn-Rh alloys, after it all melts, temperature adjustment to 745-765
DEG C, Fe, Ti, Ag, Zr alloying component are added, temperature adjustment adds the refining agent refining of liquation weight 1-2% to 730-750 DEG C after fusing
15-20min, temperature adjustment adds norium to 740-760 DEG C after skimming, and stirs 10-15min after fusing, sampling analysis,
Adjusting component so that the percentage by weight of each element composition meets the following requirements in aluminium alloy：Cu 2.6-3.8、Ni 1.0-
1.5、Sn 0.4-0.6、Co 0.25-0.45、Rh 0.1-0.3、Zr 0.05-0.15、Fe 0.3-0.5、Ti 0.1-0.2、Ag
1.4-2.2, Ce 0.05-0.15, Eu 0.04-0.08, Yb 0.03-0.06, balance of Al；Come out of the stove after standing 15-20min and poured
Note, pouring temperature is 700-720 DEG C, then is made required aluminum alloy materials by casting and rolling process；
（3）Aluminum alloy materials obtained above are heat-treated：280-320 DEG C first is warming up to 100-150 DEG C/h, 2- is incubated
3h, then 510-530 DEG C is warming up to 150-200 DEG C/h, 0.5-1h is incubated, 0-5 DEG C of ice of people is put after air-cooled to 200-250 DEG C of high wind
Less than 50 DEG C are cooled in water, are then taken out and is warming up to 160-220 DEG C with 80-120 DEG C/h, be incubated 5-10h, then with 30-60 DEG C/
H is cooled to 100-120 DEG C, is incubated 10-15h, is air cooled to after room temperature and is warming up to 80-90 DEG C with 35-55 DEG C/h, is incubated 15-20h,
It is air cooled to room temperature.
2. the preparation method of high-thermal-conductivity low-expansibility coefficient rare earth aluminium alloy transmission material according to claim 1, its feature
It is that the preparation method of the refining agent is as follows：
A, the raw material for taking following weight portion：Sodium chloride 40-50, potassium chloride 25-35, dolomite 10-15, pyrophillite 8-12, water magnesium
Stone 10-15, diatomite 5-10, glauber salt 4-8, soda ash 3-6, cryolite powder 7-11, carnallite powder 6-9, refractory brick bits 4-8；
B, dolomite, pyrophillite, shepardite, diatomite are well mixed, 1180-1240 DEG C of calcining 2-3h, water quenching is crushed, ground
Mill, crosses 80-100 mesh sieves, stand-by；
C, sodium chloride and potassium chloride are well mixed, are heated to 805-825 DEG C, after after its all melting, added obtained in step b
Powder, stirs 3-5min, crushes powdered again after standing condensation, is well mixed with remaining material, grinds, and crosses 100-150 mesh
Sieve.
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| CN101805846A (en) * | 2009-08-27 | 2010-08-18 | 贵州华科铝材料工程技术研究有限公司 | Mo-W-RE high-strength heat-resistance aluminium alloy material and preparation method thereof |
| CN102021434A (en) * | 2009-09-21 | 2011-04-20 | 贵州华科铝材料工程技术研究有限公司 | Nb-RE high-strength heat-resistance aluminum alloy material altered with C and preparation method thereof |
| CN102828079A (en) * | 2011-06-14 | 2012-12-19 | 湖南创元新材料有限公司 | C-modified Nb-Cr containing aluminum alloy and preparation method thereof |
| CN103014456A (en) * | 2012-12-01 | 2013-04-03 | 滁州晨润工贸有限公司 | Processing method of corrosion-resisting aluminum alloy foaming die cast |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08144003A (en) * | 1994-11-16 | 1996-06-04 | Mitsubishi Alum Co Ltd | High strength aluminum alloy excellent in heat resistance |
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2014
- 2014-03-28 CN CN201410121755.7A patent/CN104046864B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805846A (en) * | 2009-08-27 | 2010-08-18 | 贵州华科铝材料工程技术研究有限公司 | Mo-W-RE high-strength heat-resistance aluminium alloy material and preparation method thereof |
| CN102021434A (en) * | 2009-09-21 | 2011-04-20 | 贵州华科铝材料工程技术研究有限公司 | Nb-RE high-strength heat-resistance aluminum alloy material altered with C and preparation method thereof |
| CN102828079A (en) * | 2011-06-14 | 2012-12-19 | 湖南创元新材料有限公司 | C-modified Nb-Cr containing aluminum alloy and preparation method thereof |
| CN103014456A (en) * | 2012-12-01 | 2013-04-03 | 滁州晨润工贸有限公司 | Processing method of corrosion-resisting aluminum alloy foaming die cast |
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