CN102061406A - Novel high-elasticity Cu-Ni-Mn alloy and preparation method thereof - Google Patents
Novel high-elasticity Cu-Ni-Mn alloy and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a novel high-elasticity Cu-Ni-Mn alloy which comprises the following components in percent by weight: 15-20 percent of Ni, 15-20 percent of Mn, 0.1 percent of Ti, 0.5-1 percent of Al, 0.05 percent of P, 0-0.1 percent of Re and the balance of Cu, wherein the weight percent sum of all the components is 100 percent. The invention also discloses a preparation method of the high-elasticity Cu-Ni-Mn alloy, which is simpler, is capable of reducing the preparation cost of the alloy, and solves the problems of a mass of pores and defects and the like inside a cast ingot because the Cu-Ni-Mn alloy is extremely easy to absorb gas during smelting and casting, and a key problem that the cast ingot is easy to crack during the rolling to cause the subsequent processing not to be favorably carried out. The alloy is suitable for making various elastic elements, contact springs, switches, contacts and the like in industries of instruments, electrical appliances and the like.
Description
Technical field
The present invention designs a kind of cupronickel alloy material and preparation method thereof, and being specifically related to a kind of is matrix with copper, and nickel, manganese, aluminium, titanium, phosphorus, rare earth are novel elastic alloy material of main alloy element and preparation method thereof.
Background technology
Elastic alloy is a crucial class alloy in the functional materials, also is indispensable material in precision instrumentation and the precision optical machinery.This class alloy is widely used in making various resilient connection elements, for example, pressure elastic contact chip, heat-sensitive duplex metal elastic element, rly. be with all kinds of elastic elements of using in electrically conductive elastic connector and the aeronautical instrument instrument, and their function is generation power or moment, stored energy, buffering vibration, as resilient connection and spacer medium etc.
Elastic alloy can be divided into: spring steel (comprises carbon steel and steel alloy, such as 65 steel and 65Mn), iron-based elastic alloy (as Fe-Cr-Ni system and Fe-Cr-Ni-Co system), Ni-based elastic alloy (as famous nickel-beryllium alloy), cobalt-based elastic alloy (as Co40NiCrMo), copper base elastic alloy (as berylliumbronze, tin-phosphor bronze and nickelin etc.), niobium base elastic alloy (is the high temperature high elastic modulus alloy as Ni-Cr-Co) etc.Copper base elastic alloy possesses good physics, chemistry, mechanical mechanics property, has consequence in the high-strength highly-conductive high elastic modulus alloy.
At present, alloys such as the most famous berylliumbronze and titanium bronze in the copper base elastic alloy commonly used, be to add in copper that solubility with temperature reduces and the alloying element that obviously reduces, form supersaturated solid solution by pyroprocessing, the supersaturated solid solution branch is parsed, alloying element is distributed in the matrix with the form of precipitated phase, and these alloys belong to precipitation strength type elastic alloy; And great majority all are single-phase αGu Rongtis in the alloys such as aluminum brass, German silver, xantal, tinbronze, do not produce phase transformation, can only rely on cold deformation and low-temperature heat treatment subsequently to be strengthened, and alloy belongs to working hardening type elastic alloy.In copper base precipitation strength type elastic alloy, berylliumbronze is only a kind of high-elastic high strength alloy.Yet, the production cost height of beraloy, and its dust is poisonous, and its toxicity of compound is bigger.The compound of beryllium is harmful, and producers should not work under comparatively high temps for a long time.Therefore, in recent years along with the continuous enhancing of human environmental consciousness, is seeking excellent property, and the more harmonious novel elastic alloy of environment both at home and abroad always.
In the nickelin, the MnNi compound that manganese and nickel form has the effect of crystal grain thinning, and can improve the mechanical property and the processing characteristics of alloy by the precipitation hardening of MnNi.After cupronickel added manganese, resistance value was stable, and temperature coefficient of resistance is less, has excellent conducting performance, is famous electrical alloy.Studies show that nickelin is and to possess novel elastic alloys high-strength, high-elastic and the excellent conductive capability potentiality by heat treatment reinforcement.
Yet, very easily air-breathing in the high melt castingprocesses of nickelin, cause that there is a large amount of pores in ingot casting inside, defective such as be mingled with, loosen, alloy is easy to crack in the operation of rolling, is not well used as yet so far.Chinese patent application (application number: 200910309818) about the preparation method of copper-nickel-manganese-iron alloy, be that various alloys are made powder, utilize vacuum high-temperature sintering, furnace cooling carries out solid solution aging after the room temperature and obtains alloy body, this method need be made powder with raw material, the complicated height that requires of preparation method, production efficiency is low, the cost height, the prepared alloy billet of this method is little, shape is single, be unfavorable for further processing and realize industrialization, and just ingot casting is carried out simple solid solution aging in this method, there is not further plastic working, can not give full play to the performance of alloy, the application of product is very limited.
Summary of the invention
A kind of new copper nickel manganese elastic alloy, according to weight percent, the alloying element that described copper nickel manganese elastic alloy comprises is: 15%～20% nickel, 15%～20% manganese and micro-titanium, aluminium, phosphorus and rare earth, described content of elements is respectively: titanium: 0.1%, aluminium: 0.1%～1%, phosphorus: 0.05%, rare earth: 0%～0.1%; The weight percent sum of each component is 100% in the alloy, and surplus is copper and small amount of impurities.
Further, the weight percent of element nickel and manganese Mn is 1: 1 in the described alloy.
Further, described copper nickel manganese elastic alloy color is the white of light, tensile strength sigma
b: 965～1200MPa; Unit elongation δ: 1.5～4%; Hardness 300～374Hv; The new copper Magno of the high strength and high flexibility premium properties of elastic modulus E: 136～153GPa.
The preparation method of above-mentioned new copper nickel manganese elastic alloy, concrete technical process is:
A. prepare burden, feed intake and melting according to weight percent;
B. mill face;
C. homogenizing annealing;
D. hot rolling;
E. solution treatment;
F. cold roughing;
G. process annealing;
H. cold finish rolling;
I. ageing treatment.
Further, the melting that feeds intake described in the step a is in proper order: 1. copper+nickel; 2. after copper, nickel fusing, add manganese+aluminium, wherein manganese will entrain into stove with copper-clad; 3. add copper titanium master alloy and copper phosphorus master alloy and copper rare earth intermediate alloy before coming out of the stove; Be used for crystal grain thinning and removal of impurities; Smelting temperature is: 1150～1300 ℃; Pouring temperature is 1200 ℃ ± 20 ℃.
Further, the back melt that at every turn feeds intake in the described fusion process all covers with the thick charcoal layer of 10～15mm, and evenly is sprinkling upon on the charcoal layer with tiny graphite scale, covers the slit that charcoal layer stays fully.
Further, described homogenizing annealing, hot rolled temperature are: 800～900 ℃, be heat-up time: 2～10h; In the described process annealing operation, annealing temperature is: 600～750 ℃, the time is: 2～5h.
Further, in the described solution treatment operation, solid solubility temperature is: 600～800 ℃, soaking time is: 2～8h, the type of cooling is a water-cooled.
Further, in the described ageing treatment process, aging temp is: 400～500 ℃, the time is: 8～20h, the type of cooling is air cooling or furnace cooling.
Further, cold rolling total working modulus is between the described twice annealing: 50～80%, and the cold rolling total working modulus of finished product is: 40～60%.
Compared with prior art, the invention has the advantages that new copper nickel manganese elastic alloy, is that intensity, hardness, processing characteristics aspect all have superperformance, also has good comprehensive performances simultaneously.And, the preparation process of this alloy is fairly simple, technical process is short, thereby and by covering charcoal and graphite when the metal melting and in fusion process, adding alloyed metal and solve the very easily air-breathing problem that causes ingot casting inside to have a large amount of pores in the melting and casting process; By adding alloyed metal in the fusion process, and the addition sequence of controlling various alloyed metals adopt with mode and in the press working process specific annealing process make ingot casting solidifying with phase transition process in avoid fragility generation mutually, so solved alloy cast ingot problem that following process is handled etc. that is unfavorable for easy to crack in the press working process.This class alloy is widely used in making various elastic elements, be a kind of good high strength, high conductivity, snappiness copper base alloy, because it does not contain and any environment, human body harmful's element is had excellent comprehensive performances again, be the good substitute of traditional elastic alloy such as berylliumbronze.
Embodiment
By the following examples the present invention is described in further detail.
Embodiment 1
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% cerium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 1.
Copper nickel manganese elastic alloy becomes to be grouped into example (weight %) among table 1 embodiment 1
| Alloying element | Ni | Mn | Al | Ce | Ti | P | Cu |
| Content | 15 | 15 | 0.2 | 0.02 | 0.1 | 0.05 | Surplus |
The preparation method:
1. melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, charcoal layer with 10～15mm covers bath surface fully, spread on charcoal layer evenly with tiny graphite scale, purpose is that the slit that charcoal layer stays is covered fully, covers smelting furnace with graphite cake then again; Carry out rapid heating, melting according to melting technology; Treat in the stove raw material all after the fusing, the manganese sheet that adds aluminium flake and wrap up in, and with charcoal, the covering of graphite scale melt with copper-clad, the covering method of use and cladding thickness are with preceding identical; After the manganese sheet melts fully, add copper-10% cerium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, cover melt with charcoal, graphite scale then, graphite cake covers smelting furnace, and the covering method of use and cladding thickness are with preceding identical; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures;
2. mill face: the oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 850 ℃, homogenizing insulation 3 hours.
4. hot rolling: by hot rolling the alloy billet is carried out 63% deformation process.
5. solution treatment: will be heated to 750 ℃ of insulation 3h, water-cooled through the hot rolled alloy.
6. cold roughing: will carry out 80% cold deformation processing through the alloy of solution treatment.
7. process annealing: the alloy after cold rolling is packed in the heat-treatment of annealing stove,, eliminate cold rolling work hardening fully 700 ℃ of insulations 2 hours down.
8. cold finish rolling: alloy carried out 52% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the heat-treatment of annealing stove, at 450 ℃ of insulations 8 hours down, furnace cooling.
Embodiment 2
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% lanthanum master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 2.
Copper nickel manganese elastic alloy becomes to be grouped into example (weight %) among table 2 embodiment 2
| Alloying element | Ni | Mn | Al | La | Ti | P | Cu |
| Content | 15 | 15 | 0.2 | 0.02 | 0.1 | 0.05 | Surplus |
The preparation method:
1, melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, with the charcoal layer covering of 10～15mm, spread on charcoal layer evenly with tiny graphite scale again, purpose is to cover the slit that charcoal layer stays, and covers smelting furnace with graphite cake then; Carry out rapid heating, melting according to melting technology; Treat that raw material all melts the manganese sheet that the back adds aluminium flake and wraps up in copper-clad in the stove, and with charcoal, graphite scale covering melt, the covering method of use and cladding thickness are with preceding identical; After the manganese sheet melts fully, add copper-10% lanthanum master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, cover melt with charcoal, graphite scale then, the covering method of use and cladding thickness are with preceding identical; Graphite cake covers smelting furnace; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures.
2. mill face: the oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 800 ℃, homogenizing insulation 4 hours.
4. hot rolling: by hot rolling the alloy billet is carried out 65% deformation process.
5. solution treatment: will be heated to 700 ℃ of insulation 2h, water-cooled through the hot rolled alloy.
6. cold roughing: will carry out 70% cold deformation processing through the alloy of solution treatment.
7. process annealing: the alloy after cold rolling is packed in the heat-treatment of annealing stove,, eliminate cold rolling work hardening fully 650 ℃ of insulations 3 hours down.
8. cold finish rolling: alloy carried out 50% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the heat-treatment of annealing stove, at 450 ℃ of insulations 10 hours down, furnace cooling.
Embodiment 3
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% lanthanum master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 3.
Copper nickel manganese elastic alloy becomes to be grouped into example among table 3 embodiment 3
| Alloying element | Ni | Mn | Al | La | Ti | P | Cu |
| Content (weight %) | 15 | 15 | 0.2 | 0.04 | 0.1 | 0.05 | Surplus |
The preparation method:
1. melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, with the charcoal layer covering of 10～15mm, spread on charcoal layer evenly with tiny graphite scale again, purpose is to cover the slit that charcoal layer stays, and covers smelting furnace with graphite cake then; Carry out rapid heating, melting according to melting technology; Treat that raw material all melts the manganese sheet that the back adds aluminium flake and wraps up in copper-clad in the stove, and with charcoal, graphite scale covering melt, the covering method of use and cladding thickness are with preceding identical; After the manganese sheet melts fully, add copper-10% lanthanum master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, cover melt with charcoal, graphite scale then, the covering method of use and cladding thickness are with preceding identical; Graphite cake covers smelting furnace; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures.
2. mill face: the oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 900 ℃, homogenizing insulation 5 hours.
4. hot rolling: ingot casting carries out 60% distortion after milling face, homogenizing insulation processing.
5. solid solution: will be heated to 750 ℃ of insulation 3h, water-cooled through the hot rolled alloy.
6. cold rolling: as will to carry out 75% cold deformation processing through the alloy of solution treatment.
7. process annealing: the alloy after cold rolling is packed in the heat-treatment of annealing stove,, eliminate cold rolling work hardening fully 750 ℃ of insulations 3 hours down.
8. cold finish rolling: alloy carried out 60% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the heat-treatment of annealing stove, at 500 ℃ of insulations 8 hours down, furnace cooling.
Embodiment 4
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% iridium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 4.
Copper nickel manganese elastic alloy becomes to be grouped into example among table 4 embodiment 4
| Alloying element | Ni | Mn | Al | Y | Ti | P | Cu |
| Content (weight %) | 15 | 15 | 0.2 | 0.04 | 0.1 | 0.05 | Surplus |
The preparation method:
1. melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, with the charcoal layer covering of 10～15mm, spread on charcoal layer evenly with tiny graphite scale again, purpose is to cover the slit that charcoal layer stays, and covers smelting furnace with graphite cake then; Carry out rapid heating, melting according to melting technology; Treat that raw material all melts the manganese sheet that the back adds aluminium flake and wraps up in copper-clad in the stove, and with charcoal, graphite scale covering melt, the covering method of use and cladding thickness are with preceding identical; After the manganese sheet melts fully, add copper-10% iridium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, cover melt with charcoal, graphite scale then, the covering method of use and cladding thickness are with preceding identical; Graphite cake covers smelting furnace; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures.
2. mill face: the oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 900 ℃, homogenizing insulation 3 hours.
4. hot rolling: ingot casting is after milling face, and homogenizing is handled, and carries out 65% distortion again.
5. solid solution: will be heated to 750 ℃ of insulation 5h, water-cooled through the hot rolled alloy.
6. cold rolling: as will to carry out 80% cold deformation processing through the alloy of solution treatment.
7. process annealing: the alloy after cold rolling is packed in the heat-treatment of annealing stove,, eliminate cold rolling work hardening fully 600 ℃ of insulations 5 hours down.
8. cold finish rolling: alloy carried out 58% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the heat-treatment of annealing stove, at 400 ℃ of insulations 12 hours down, furnace cooling.
Embodiment 5
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% iridium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 5.
Copper nickel manganese elastic alloy becomes to be grouped into example (weight %) among table 5 embodiment 5
| Alloying element | Ni | Mn | Al | Y | Ti | P | Cu |
| Content | 15 | 15 | 0.2 | 0.06 | 0.1 | 0.05 | Surplus |
The preparation method:
1. melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, with the charcoal layer covering of 10～15mm, spread on charcoal layer evenly with tiny graphite scale again, purpose is to cover the slit that charcoal layer stays, and covers smelting furnace with graphite cake then; Carry out rapid heating, melting according to melting technology; Treat that raw material all melts the manganese sheet that the back adds aluminium flake and wraps up in copper-clad in the stove, and with charcoal, graphite scale covering melt, the covering method of use and cladding thickness are with preceding identical; After the manganese sheet melts fully, add copper-10% iridium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, cover melt with charcoal, graphite scale then, the covering method of use and cladding thickness are with preceding identical; Graphite cake covers smelting furnace; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures.
2. mill face: the oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 850 ℃, homogenizing insulation 3 hours.
4. hot rolling: ingot casting after the homogenizing, carries out 65% deformation process through milling face.
5. solid solution: will be heated to 800 ℃ of insulation 2h, water-cooled through the hot rolled alloy.
6. cold rolling: as will to carry out 75% cold deformation processing through the alloy of solution treatment.
7. process annealing: the alloy after cold rolling is packed in the heat-treatment of annealing stove,, eliminate cold rolling work hardening fully 700 ℃ of insulations 3 hours down.
8. cold finish rolling: alloy carried out 55% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the heat-treatment of annealing stove, at 500 ℃ of insulations 12 hours down, furnace cooling.
Embodiment 6
Alloy of the present invention adopts following raw material melting: electrolytic copper, electrolytic nickel, manganese sheet, copper-10% cerium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, fine aluminium.The composition of alloy sees Table 6.
Copper nickel manganese elastic alloy becomes to be grouped into example among table 6 embodiment 6
| Alloying element | Ni | Mn | Al | Ce | Ti | P | Cu |
| Content | 15 | 15 | 0.2 | 0.06 | 0.1 | 0.05 | Surplus |
The preparation method:
1. melting: adopt medium-frequency induction furnace to carry out melting.The addition sequence of alloy is: electrolytic copper, electrolytic nickel are put into smelting furnace, charcoal layer with 10～15mm covers, spread on charcoal layer evenly with tiny graphite scale, purpose is to cover the slit that charcoal layer stays fully, covers smelting furnace with graphite cake then again; Carry out rapid heating, melting according to melting technology; Treat that raw material all melts the manganese sheet that the back adds aluminium flake and wraps up in copper-clad in the stove, and cover melt fully that the covering method of use and cladding thickness are with preceding identical with charcoal, graphite scale; After the manganese sheet melts fully, add copper-10% cerium master alloy, copper-10% phosphorus master alloy, copper-20% titanium master alloy, cover melt with charcoal, graphite scale then, the covering method of use and cladding thickness are with preceding identical; Graphite cake covers smelting furnace; Stir insulation 5～10min; Come out of the stove, skim, casting makes this alloy billet.1150～1300 ℃ of alloy melting temps, 1200 ± 20 ℃ of pouring temperatures.
2. mill face: the oxide skin and the casting flaw on milling ingot casting surface.
3. homogenizing annealing: in process furnace, be heated to 850 ℃, homogenizing insulation 5 hours.
4. hot rolling: ingot casting after the homogenizing, carries out 65% deformation process through milling face.
5. solid solution: will be heated to 750 ℃ of insulation 3h, water-cooled through the hot rolled alloy.
6. cold rolling: as will to carry out 80% cold deformation processing through the alloy of solution treatment.
7. process annealing: the alloy after cold rolling is packed in the heat-treatment of annealing stove,, eliminate cold rolling work hardening fully 750 ℃ of insulations 2 hours down.
8. cold finish rolling: alloy carried out 56% cold finish rolling deformation process.
9. timeliness: the alloy after cold rolling is packed in the heat-treatment of annealing stove, at 450 ℃ of insulations 16 hours down, furnace cooling.
Table 7,8,9 is represented respectively is that the invention nickelin becomes to be grouped into (weight %) with comparative alloy salient features, comparative alloy and becomes to be grouped into (weight %) with nickelin of the present invention, represents among the present invention each alloy content and performance in the nickelin in mode intuitively.
Table 7 nickelin of the present invention and comparative alloy salient features
| Alloy | Young's modulus (GPa) | Tensile strength (MPa) | Unit elongation (%) | Hardness (Hv) |
| Comparative alloy QBe 2 | 122～137 | 1125～1175 | ≥1.5 | 320～360 |
| Nickelin | 136～153 | 965～1200 | 1.5～4 | 300～374 |
Table 8 comparative alloy becomes to be grouped into (weight %)
| Alloying element | Ni | Al | Si | Fe | Be | Cu |
| Alloy content | 0.2-0.5 | 0.15 | 0.15 | 0.15 | 1.8-2.1 | Surplus |
Table 9 nickelin of the present invention becomes to be grouped into (weight %)
| Alloying element | Ni | Mn | Al | Re | Ti | P | Cu |
| Alloy content | 15-20 | 15-20 | 0.5-1.0 | 0-0.1 | 0-0.1 | 0.05 | Surplus |
Claims (10)
1. new copper nickel manganese elastic alloy, it is characterized by, according to weight percent, the alloying element that described copper nickel manganese elastic alloy comprises is: 15%～20% nickel, 15%～20% manganese and micro-titanium, aluminium, phosphorus and rare earth, described content of elements is respectively titanium: 0.1%, aluminium: 0.1%～1%, phosphorus: 0.05%, rare earth: 0%～0.1%; The weight percent sum of each component is 100% in the alloy, and surplus is copper and small amount of impurities.
2. new copper nickel manganese elastic alloy according to claim 1 is characterized by, and the weight percent of element nickel and manganese Mn is 1: 1 in the described alloy.
3. according to the described copper nickel of claim 1 manganese elastic alloy, it is characterized by, described copper nickel manganese elastic alloy color is the white of light; Tensile strength sigma
b: 965～1200MPa, unit elongation δ: 1.5～4%, hardness 300～374Hv, the new copper Magno of the high strength and high flexibility premium properties of elastic modulus E: 136～153GPa.
4. the preparation method of new copper nickel manganese elastic alloy according to claim 1 is characterized by, and concrete technical process is:
A. prepare burden, feed intake and melting according to weight percent;
B. mill face;
C. homogenizing annealing;
D. hot rolling;
E. solution treatment;
F. cold roughing;
G. process annealing;
H. cold finish rolling;
I. ageing treatment.
5. preparation method according to claim 4 is characterized by, and the melting that feeds intake described in the step a is in proper order: 1. copper+nickel; 2. after copper, nickel fusing, add manganese+aluminium, wherein manganese will entrain into stove with copper-clad; 3. add copper titanium master alloy and copper phosphorus master alloy and copper rare earth intermediate alloy before coming out of the stove; Be used for crystal grain thinning and removal of impurities; Smelting temperature is: 1150～1300 ℃; Pouring temperature is 1200 ℃ ± 20 ℃.
6. preparation method according to claim 4 is characterized by; The back melt that at every turn feeds intake in the described fusion process all covers with the thick charcoal layer of 10～15mm, and evenly is sprinkling upon on the charcoal layer with tiny graphite scale, covers the slit that charcoal layer stays fully.
7. preparation method according to claim 4 is characterized by, and described homogenizing annealing, hot rolled temperature are: 800～900 ℃, be heat-up time: 2～10h; In the described process annealing operation, annealing temperature is: 600～750 ℃, the time is: 2～5h.
8. preparation method according to claim 4 is characterized by, and in the described solution treatment operation, solid solubility temperature is: 600～800 ℃, soaking time is: 2～8h, the type of cooling is a water-cooled.
9. preparation method according to claim 4 is characterized by, and in the described ageing treatment process, aging temp is: 400～500 ℃, the time is: 8～20h, the type of cooling is air cooling or furnace cooling.
10. preparation method according to claim 4 is characterized by, and cold rolling total working modulus is between the described twice annealing: 50～80%, and the cold rolling total working modulus of finished product is: 40～60%.
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| CN112375938A (en) * | 2020-10-26 | 2021-02-19 | 有研工程技术研究院有限公司 | High-temperature-resistant ultrahigh-strength high-elasticity stress relaxation-resistant copper alloy and preparation method and application thereof |
| US11174533B2 (en) | 2017-07-03 | 2021-11-16 | Byd Company Limited | Cu-based microcrystal alloy and preparation method thereof |
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| CN114395711A (en) * | 2021-12-28 | 2022-04-26 | 有研工程技术研究院有限公司 | Anti-tarnishing and anti-corrosion copper alloy material with rapid bacteriostasis effect and preparation method thereof |
| CN114908271A (en) * | 2022-05-27 | 2022-08-16 | 中国科学院兰州化学物理研究所 | High-temperature-resistant copper alloy-based solid lubricating composite material and preparation method thereof |
| CN115537597A (en) * | 2022-09-20 | 2022-12-30 | 重庆川仪自动化股份有限公司 | Manganese-copper alloy with negative temperature coefficient of resistance, preparation method and application |
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