CN106048296A - High-strength and high-tenacity Cu-Al-Fe-Ni-RE material used for protective ring and preparation method of material - Google Patents
High-strength and high-tenacity Cu-Al-Fe-Ni-RE material used for protective ring and preparation method of material Download PDFInfo
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- CN106048296A CN106048296A CN201610401789.0A CN201610401789A CN106048296A CN 106048296 A CN106048296 A CN 106048296A CN 201610401789 A CN201610401789 A CN 201610401789A CN 106048296 A CN106048296 A CN 106048296A
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- China
- Prior art keywords
- strength
- preparation
- alloy
- retaining ring
- high ductility
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
-
- 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
-
- 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
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Abstract
The invention relates to a high-strength and high-tenacity Cu-Al-Fe-Ni-RE material used for a protective ring and a preparation method of the material. Alloy components include (by wt%) 5 wt%-10 wt% of Al, 3 wt%-6 wt% of Fe, 2 wt%-5 wt% of Ni, 0.01 wt%-0.5 wt% of RE and the balance Cu or Cu and inevitable impurity elements. According to the high-strength and high-tenacity Cu-Al-Fe-Ni-RE material used for the protective ring and the preparation method of the material, by designing and developing a novel Cu-Al-Fe-Ni-RE alloy in multi-element microalloying and rare earth modifying means, the prepared alloy has high strength and tenacity and good heat conduction performance. According to the high-strength and high-tenacity Cu-Al-Fe-Ni-RE material used for the protective ring and the preparation method of the material, ingot castings are prepared through vacuum melting and pressurized solidification, the as-cast-condition defects are effectively overcome, and the ingot casting compactness is improved.
Description
Technical field
The present invention relates to a kind of content of rare earth 0.01% ~ 0.5% retaining ring high-strength and high ductility Cu-Al-Fe-Ni-RE alloy and
Its preparation technology, belongs to technical field of material.
Background technology
Retaining ring is one of vitals on motor rotor, and its hot jacket, on end ring, is made a concerted effort by close-fitting, itself and winding
The centrifugal force of end, bending stress etc. act on, and supercoated stress is the highest.For reducing rotor temperature rise, reduce rotor tip fracture, it is desirable to
Shelling ring material has high intensity, toughness and good heat conductivity and stress corrosion resistant.Meanwhile, for reducing leakage field and eddy current damage
Consumption, it is desirable to shelling ring material must be nonmagnetic.At present, Cu-Al-Fe-Ni aluminium bronze is as a kind of excellent high-strength and high ductility alloy quilt
It is widely used in the production of retaining ring.Traditional Cu-Al-Fe-Ni alloy production uses common intermediate frequency coreless induction furnace melting+company
Continuous casting or semi-continuous casting, owing in alloy, the content of nickel and aluminum is higher, both elements are oxidizable in fusion process
Form dystectic suspension slag；In Cu-Al-Fe-Ni alloy, alloying element content is high and be multiphase alloy, in casting cycle due to
The most various non-equilibrium microstructures when nonequilibrium freezing causes crystallization, performance is uneven, plasticity is poor, resistance of deformation
The situation such as big may cause producing cracking phenomena during forge hot；Additionally, the alloy structure consistency that conventional cast mode produces is low, and
It is easily generated the problems such as cast condition defect.
Summary of the invention
The present invention is directed to drawbacks described above, it is therefore intended that provide a kind of one with high strength and toughness and heat conductivility to protect
Ring high-strength and high ductility Cu-Al-Fe-Ni-RE material and preparation method thereof.
For this technical solution used in the present invention it is: the present invention provides a kind of retaining ring high-strength and high ductility Cu-Al-Fe-Ni-RE
Alloy and preparation method thereof, by adding trace rare-earth element in Cu-Al-Fe-Ni alloy, and uses vacuum melting+pressurization
The techniques such as solidification technology, to prepare dense structure, excellent performance, can meet properties of product requirement and the high-strength height of service condition
Tough Cu-Al-Fe-Ni-RE alloy.Concrete technology parameter is as follows:
1. high-strength and high ductility Cu-Al-Fe-Ni-RE alloying component (wt%) is: Al 5-10, Fe 3-6, Ni 2-5, RE 0.01-
0.5, other impurity element summation≤0.28, surplus is Cu.
2. carrying out raw material preparation by said components, follow-up preparation technology key step includes:
(1) dispensing: according to Cu-Al-Fe-Ni-RE alloy each component requirements dispensing.Raw material selection 99.5% cathode copper, 99.99%
Pure nickel plate, 99.9% pure aluminum plate, 99.9% pure iron plate, rare earth element adds with intermediate alloy form.Before melting, raw material is carried out
The pretreatment such as skin drying, degreasing and rust removal.
(2) vacuum melting+compression solidification: fusion process is carried out in vacuum induction melting furnace, by raw material according to Cu,
The order of Fe, Ni, Al and rare earth intermediate alloy adds, and wherein, before adding rare earth element, will sufficiently take off liquation
The pretreatment such as oxygen, degasification, slagging-off, infrared radiation thermometer thermometric, smelting temperature is 1200 ~ 1300 DEG C, and vacuum is maintained at 10-2
Below MPa；After fusion process completes, pouring into a mould in vacuum chamber, carry out gas pressurized while cast, pressure is maintained at
0.5-1.0 MPa, the demoulding after casting complete.
(3) heat treatment: the ingot casting obtaining step (2) carries out homogenizing annealing, and Homogenization Treatments technique is at 800-900
6-8 h it is incubated at DEG C；Ingot casting after homogenizing annealing is carried out solid solution and aging strengthening model, and solid solubility temperature is 880-900
DEG C, it is incubated 1-3 h, quick water-cooled；Aging temp is 480-600 DEG C, is incubated 1-4 h, and air cooling, to alloy property after heat treatment
Test.
The invention have the advantage that present invention aims to high ferro high-strength and high ductility shelling ring material harsh military service
Operating mode, develops novel retaining ring high-strength and high ductility Cu-Al-Fe-Ni-RE alloy and preparation method thereof, and by vacuum melting+add
Pressure solidification technology, decreases alloying element oxidation in fusion process, solves conventional casting techniques and prepares alloy structure cause
Density is low, be easily generated element segregation and the problem such as cast condition defect, can significantly improve the combination property of alloy material.
The present invention by designing and developing novel C u-Al-Fe-Ni-RE alloy at multicomponent microalloying and rare earth modified means,
The alloy prepared has high strength and toughness and heat conductivility；The present invention uses vacuum melting, compression solidification to prepare ingot casting, effectively
Improve as cast condition defect, improve ingot casting consistency.
Detailed description of the invention
Embodiment 1:
Alloying ingredient ratio (wt%) is: Al=8, Fe=4, Ni=3 RE=0.1, other impurity summation≤0.28, and surplus is Cu.
Mould before putting into vacuum drying oven, inner chamber daub, and preheating, preheat temperature 400 DEG C, be incubated 2 hours.
The blank prepared is put in order in the graphite crucible of vacuum melting furnace, evacuation, make vacuum reach 10-2 MPa, adds
Hot temperature 1250 DEG C, after fusing, holding temperature is 1200 DEG C.Pour into a mould in vacuum chamber, carry out gas while cast and add
Pressure, makes the air pressure in vacuum drying oven from 10-2 MPa rises to 0.6 MPa.After ingot solidification, after cooling a period of time, recover true
Empty stove internal gas pressure.From vacuum drying oven, take out metal mold, open mould, take out ingot casting.Ingot casting carries out homogenizing annealing, at homogenization
Science and engineering skill is for be incubated 6 h at 850 DEG C；Ingot casting after homogenizing annealing is carried out solid solution and aging strengthening model, solid solubility temperature
It is 880 DEG C, is incubated 3 h, quick water-cooled；Aging temp is 480 DEG C, is incubated 4 h, air cooling.Alloy property after heat treatment is surveyed
Examination.
By the alloy property index of the material obtained by said method: room temperature tensile intensity is 770 MPa, yield strength
Being 13% for 450MPa, elongation percentage, heat conductivity is 140 W/(m K).
Embodiment 2:
Alloying ingredient ratio (wt%) is: other impurity summation≤0.28 of Al=8, Fe=4, Ni=3, RE=0.3, and surplus is Cu.
Technique is with embodiment 1, after tested, and the alloy property index of obtained material: room temperature tensile intensity is
790MPa, yield strength are 485MPa, elongation percentage is 15%, heat conductivity is 145 W/(m K).
Embodiment 3:
Alloying ingredient ratio (wt%) is: other impurity summation≤0.28 of Al=8, Fe=4, Ni=3, RE=0.5, and surplus is Cu.
Technique is with embodiment 1, after tested, and the alloy property index of obtained material: room temperature tensile intensity is 760
MPa, yield strength are 465 MPa, elongation percentage is 16%, heat conductivity is 141 W/(m K).
Claims (6)
1. a retaining ring high-strength and high ductility Cu-Al-Fe-Ni-RE material, it is characterised in that alloying component (wt%) is: Al:5-10
, Fe:3-6, Ni:2-5, RE:0.01-0.5, surplus is Cu or is Cu and inevitable impurity element.
A kind of retaining ring high-strength and high ductility Cu-Al-Fe-Ni-RE material the most according to claim 1, it is characterised in that impurity
Element summation≤0.28.
A kind of retaining ring high-strength and high ductility Cu-Al-Fe-Ni-RE material the most according to claim 1, it is characterised in that former material
Material selects 99.5% cathode copper, 99.99% pure nickel plate, 99.9% pure aluminum plate, 99.9% pure iron plate.
4. the retaining ring preparation method of high-strength and high ductility Cu-Al-Fe-Ni-RE material, it is characterised in that enter according to the following steps
OK:
1) dispensing: according to Cu-Al-Fe-Ni-RE alloy each component requirements dispensing；
Raw material selection 99.5% cathode copper, 99.99% pure nickel plate, 99.9% pure aluminum plate, 99.9% pure iron plate, rare earth element is with centre
Alloy form adds；
2) vacuum melting+compression solidification: fusion process is carried out in vacuum induction melting furnace, by raw material according to Cu, Fe, Ni,
The order of Al and rare earth intermediate alloy adds, and smelting temperature is 1200 ~ 1300 DEG C, and vacuum is maintained at 10-2 Below MPa；Molten
After refining process completes, pouring into a mould in vacuum chamber, carry out gas pressurized while cast, pressure is maintained at 0.5-1.0 MPa,
The demoulding after casting complete；
3) heat treatment: the ingot casting obtaining step (2) carries out homogenizing annealing, and Homogenization Treatments technique is at 800-900 DEG C
Insulation 6-8 h；Ingot casting after homogenizing annealing is carried out solid solution and aging strengthening model, and solid solubility temperature is 880-900 DEG C, protects
Temperature 1-3 h, quick water-cooled；Aging temp is 480-600 DEG C, is incubated 1-4 h, air cooling.
The preparation method of a kind of retaining ring high-strength and high ductility Cu-Al-Fe-Ni-RE material the most according to claim 4, it is special
Levy and be, step 2) in raw material is carried out before melting skin drying, degreasing and rust removal pretreatment.
The preparation method of a kind of retaining ring high-strength and high ductility Cu-Al-Fe-Ni-RE material the most according to claim 4, it is special
Levy and be, step 2) in before adding rare earth element, liquation to be carried out sufficient deoxidation, degasification, slagging-off pretreatment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610401789.0A CN106048296A (en) | 2016-06-11 | 2016-06-11 | High-strength and high-tenacity Cu-Al-Fe-Ni-RE material used for protective ring and preparation method of material |
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|---|---|---|---|
| CN201610401789.0A CN106048296A (en) | 2016-06-11 | 2016-06-11 | High-strength and high-tenacity Cu-Al-Fe-Ni-RE material used for protective ring and preparation method of material |
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| CN106048296A true CN106048296A (en) | 2016-10-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717435A (en) * | 2022-04-29 | 2022-07-08 | 中国铝业股份有限公司 | High-strength electromagnetic shielding copper alloy and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164589A (en) * | 2014-08-06 | 2014-11-26 | 中国兵器科学研究院宁波分院 | High-strength wear-resistant copper alloy and preparation method thereof |
-
2016
- 2016-06-11 CN CN201610401789.0A patent/CN106048296A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164589A (en) * | 2014-08-06 | 2014-11-26 | 中国兵器科学研究院宁波分院 | High-strength wear-resistant copper alloy and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 历长云等: "《特种铸造》", 31 May 2013, 哈尔滨工业大学出版社 * |
| 林高用等: "新型Cu-Al-Fe-Ni变形铝青铜的固溶和时效强化", 《中国有色金属学报》 * |
| 米国发等: "固溶时效对新型Cu-Al-Fe系铝青铜合金力学性能的影响", 《材料热处理技术》 * |
| 邓至谦等: "《铜及铜合金物理冶金基础》", 31 December 2010, 中南大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717435A (en) * | 2022-04-29 | 2022-07-08 | 中国铝业股份有限公司 | High-strength electromagnetic shielding copper alloy and preparation method thereof |
| CN114717435B (en) * | 2022-04-29 | 2023-01-20 | 中国铝业股份有限公司 | High-strength electromagnetic shielding copper alloy and preparation method thereof |
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