CN110241319A - A method of preparing fine grain Cu-Ni-Mn alloy - Google Patents
A method of preparing fine grain Cu-Ni-Mn alloy Download PDFInfo
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- CN110241319A CN110241319A CN201910535727.2A CN201910535727A CN110241319A CN 110241319 A CN110241319 A CN 110241319A CN 201910535727 A CN201910535727 A CN 201910535727A CN 110241319 A CN110241319 A CN 110241319A
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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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- C22C9/06—Alloys based on copper with nickel or cobalt 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
- 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
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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
- C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
Abstract
The invention discloses a kind of methods for preparing fine grain Cu-Ni-Mn alloy, specific steps include: to prepare Cu-Ni-Mn alloy using vacuum induction melting method first, then the Cu-Ni-Mn alloy cast ingot of preparation is subjected to high temperature hot rolling deformation, obtain Cu-Ni-Mn sheet alloy, then obtained Cu-Ni-Mn sheet alloy is subjected to room temperature cold deformation processing, the Cu-Ni-Mn sheet alloy after cold deformation is finally subjected to Electric Pulse Treatment, obtain fine grain and the Cu-Ni-Mn alloy without microsegregation, the method and process period of the invention is short and environmentally protective, place mat has been made for the further heat treatment synthesizing processing of later period Cu-Ni-Mn alloy.
Description
Technical field
The invention belongs to the polynary Cu field of alloy preparation technology of fine grain, specifically a kind of to prepare fine grain Cu-Ni-Mn alloy
Method.
Background technique
Cu-Ni-Mn alloy is also known as manganese-copper, is that one kind that addition Mn element is formed in Cu-Ni alloy substrate is high-strength
Spend elastic copper alloy.Due to Cu and Ni infinitely dissolve, Mn element solubility in Cu-Ni alloy substrate is limited, therefore, the alloy
MnNi precipitated phase is capable of forming to realize heat treatment reinforcement, strength of alloy can reach after fixation rates
1000MPa or more.Meanwhile Cu-Ni-Mn alloy also has good high-temperature behavior and anti-stress corrosion performance, conductive, thermal conductivity
Can be good, thus production cost and environmental pollution can be effectively reduced as a kind of alternative materials of beryllium-bronze in the alloy.Mesh
Before, Cu-Ni-Mn alloy cast ingot is mainly prepared by vacuum induction melting furnace, is post-processed then mainly to be heat-treated in traditional burner
Based on.But since Cu-Ni-Mn alloy is a kind of multicomponent copper alloy, for solutes content close to 40wt%, all kinds of solutes are first in alloy
Element addition changes the casting character of alloy substrate, thus in alloy graining process due to constitutional supercooling cause alloy grain with
Based on dendrite growth, component segregation is existed simultaneously, each section grain size is different in tissue, seriously affects alloy military service
Energy.Existing fixation rates technique can obtain high rigidity, high intensity Cu-Ni-Mn alloy, but due to Microstructures of As cast Alloys
Inhomogeneities cause alloy aging handle after precipitated phase be unevenly distributed, dendrite intergranular easily occur the second phase of brittleness aggregation,
Alloy plasticity sharply deteriorates, and will lead to components in use and brittle fracture occurs, and then fail.
Summary of the invention
The object of the present invention is to provide a kind of methods for preparing fine grain Cu-Ni-Mn alloy, change existing heat treatment side
Cu-Ni-Mn alloy dendrite grain growth mode under formula, solving alloy grain size, unevenly and after solidification component segregation is asked
Topic.
The technical scheme adopted by the invention is that a method of fine grain Cu-Ni-Mn alloy is prepared, specific steps are such as
Under:
Step 1, Cu-Ni-Mn alloy is prepared using vacuum induction melting method；
Step 2, the Cu-Ni-Mn alloy cast ingot prepared through step 1 is subjected to high temperature hot rolling deformation, obtains Cu-Ni-Mn conjunction
Golden plate material；
Step 3, the Cu-Ni-Mn sheet alloy obtained through step 2 is subjected to room temperature cold deformation processing；
Step 4, the Cu-Ni-Mn sheet alloy after step 3 cold deformation is subjected to Electric Pulse Treatment, obtains fine grain Cu-
Ni-Mn alloy.
The features of the present invention also characterized in that:
The detailed process of Cu-Ni-Mn alloy is wherein prepared in step 1 using vacuum induction melting method are as follows: electrolytic nickel, electrolysis
Manganese and copper are that 2:2:6 carries out ingredient according to mass ratio, and smelting temperature is 1135 DEG C~1165 DEG C, is protected after ingredient is completely melt
Then temperature is added the alterant of ingredient quality 0.1%, is poured, is obtained with water cooled copper mould again after heating stirring 15min~20min
Cu-Ni-Mn alloy cast ingot；
Wherein copper is T2 fine copper；
Wherein alterant is boron powder；
Wherein ingredient is completely melt that rear soaking time is 5min~10min；
Wherein step 3 high temperature hot rolling deformation detailed process are as follows: close the Cu-Ni-Mn after step 1 vacuum induction melting
Golden ingot casting is placed in hydrogen heating furnace, and heating temperature is 845 DEG C~855 DEG C, and soaking time is 110min~130min, heating knot
Temperature is not less than 745 DEG C after beam, obtains Cu-Ni-Mn sheet alloy；
Wherein Cu-Ni-Mn sheet alloy is with a thickness of 4.5mm~5.5mm；
The wherein detailed process that room temperature cold deformation is handled in step 3 are as follows: the Cu-Ni-Mn sheet alloy that will be obtained through step 2
Surface is polished, and then carries out cold deformation processing under room temperature environment using horizontal cold-rolling mill；
Wherein in step 4 Electric Pulse Treatment detailed process are as follows: will be through step 3 treated Cu-Ni-Mn sheet alloy table
Face is polished, and then sets charging voltage as 40V~60V, and pulse frequency is 275Hz~375Hz, after Electric Pulse Treatment
It is air-cooled, obtain the Cu-Ni-Mn alloy of fine grain；
Wherein electrical pulse processing time is 150s~600s.
The beneficial effects of the present invention are:
A kind of method preparing fine grain Cu-Ni-Mn alloy of the invention prepares fine grain using deformation+Electric Pulse Treatment
Grain Cu-Ni-Mn alloy is improved microcosmic inclined in As-cast Microstructure by carrying out hot rolling treatment to as cast condition Cu-Ni-Mn alloy
Analysis, making alloy, deformation occurs more than recrystallization temperature, improves the processing performance of alloy and changes as cast condition branch crystalline form
Looks；The defects of handling in combination with room temperature cold deformation, a large amount of dislocations and twin are introduced in alloy structure, effectively promotes electricity
Secondly the forming core of the tiny recrystal grain of pulse treatment process introduces Electric Pulse Treatment technique, ensure that alloy in a short time
Buy back policy quickly occurs, has refined alloy grain, has eliminated deformation process dislocation tangle.
Detailed description of the invention
Fig. 1 is Cu-Ni-Mn after vacuum induction melting in a kind of method for preparing fine grain Cu-Ni-Mn alloy of the invention
As-cast Microstructure photo；
Fig. 2 is in a kind of method for preparing fine grain Cu-Ni-Mn alloy of the invention in embodiment 2 at deformation+electric pulse
Cu-Ni-Mn alloy structure photo after reason；
Fig. 3 is in a kind of method for preparing fine grain Cu-Ni-Mn alloy of the invention in embodiment 2 at deformation+electric pulse
Alloy rigidity comparing result after Cu-Ni-Mn alloy and induction melting after reason；
Fig. 4 is in a kind of method for preparing fine grain Cu-Ni-Mn alloy of the invention at embodiment 1-3 deformation+electric pulse
The comparing result of Cu-Ni-Mn alloy grain size after reason.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The present invention provides a kind of method for preparing fine grain Cu-Ni-Mn alloy, the specific steps are as follows:
Step 1, prepare Cu-Ni-Mn alloy using vacuum induction melting method: electrolytic nickel, electrolytic manganese and T2 fine copper are according to matter
For amount than being that 2:2:6 carries out ingredient, smelting temperature is 1135 DEG C~1165 DEG C, and 5min~10min is kept the temperature after ingredient is completely melt,
Then the alterant boron powder of ingredient quality 0.1% is added, is poured, is obtained with water cooled copper mould again after heating stirring 15min~20min
Cu-Ni-Mn alloy cast ingot, is the Cu-Ni-Mn alloy structure after vacuum induction melting as shown in Figure 1, and crystal grain is that size is uneven
Dendrite, crystallite dimension is coarse；
Step 2, the Cu-Ni-Mn alloy cast ingot prepared through step 1 is subjected to high temperature hot rolling deformation: will be through step 1 vacuum sense
Cu-Ni-Mn alloy cast ingot after answering melting is placed in hydrogen heating furnace, and heating temperature is 845 DEG C~855 DEG C, and soaking time is
110min~130min carries out Homogenization Treatments, and temperature is not less than 745 DEG C after heating, obtains Cu-Ni-Mn sheet alloy,
Cu-Ni-Mn sheet alloy is with a thickness of 4.5mm~5.5mm；
Step 3, the Cu-Ni-Mn sheet alloy obtained through step 2 is subjected to room temperature cold deformation processing: will be obtained through step 2
Cu-Ni-Mn sheet alloy surface polish, cold deformation processing is then carried out under room temperature environment using horizontal cold-rolling mill,
It is 20~50% that deformation process, which controls Cu-Ni-Mn alloy deformation amount, and deformation process back and forth guarantees each section twice per pass
Deform uniformity；
Step 4, the Cu-Ni-Mn sheet alloy after step 3 cold deformation is subjected to Electric Pulse Treatment, obtains fine grain Cu-
Ni-Mn alloy: will through step 3, treated that Cu-Ni-Mn sheet alloy surface is polished, then set charging voltage as 40V
~60V, pulse frequency be 275Hz~375Hz, Electric Pulse Treatment 150s~600s, after it is air-cooled, obtain fine grain, without micro-
See the Cu-Ni-Mn alloy of segregation.
High temperature hot rolling deformation treatment temperature is higher than Cu-Ni-Mn alloy recrystallization treatment temperature, the Homogenization Treatments before hot rolling
Solute atoms diffusion is promoted at high temperature, therefore improves Cu-Ni-Mn alloy casting state microstructure component segregation, meanwhile, heat
It rolls treatment process alloy structure and severe plastic deformation occurs at high temperature, dynamic recrystallization, original branch Jingjing occur for alloy
Grain occurs to be crushed, and becomes part equiax crystal crystal grain from dendrite, subsequent room temperature cold deformation process resistance of deformation is big, therefore is closing
The defects of high density dislocation and twin are introduced in payment organization, high deformation energy storage provides for the subsequent Electric Pulse Treatment process of alloy
Driving force is recrystallized, the forming core of tiny recrystal grain is promoted；Secondly, Electric Pulse Treatment is as a kind of novel, quick, efficient
Heat treatment can allow cold deformation Cu-Ni- in a short time due to the collective effect of joule heating effect and electromigration effect
Perfect recrystallization occurs for Mn alloy, so that alloy grain be made to be evolved into tiny equiax crystal, has refined alloy structure, has guaranteed the later period
Ageing treatment can obtain high-intensitive and high-ductility simultaneously.
A kind of method preparing fine grain Cu-Ni-Mn alloy of the invention prepares fine grain using deformation+Electric Pulse Treatment
Grain Cu-Ni-Mn alloy is improved microcosmic inclined in As-cast Microstructure by carrying out hot rolling treatment to as cast condition Cu-Ni-Mn alloy
Analysis, making alloy, deformation occurs more than recrystallization temperature, improves the processing performance of alloy and changes as cast condition branch crystalline form
Looks；The defects of handling in combination with room temperature cold deformation, a large amount of dislocations and twin are introduced in alloy structure, effectively promotes electricity
Secondly the forming core of the tiny recrystal grain of pulse treatment process introduces Electric Pulse Treatment technique, ensure that alloy in a short time
Buy back policy quickly occurs, has refined alloy grain, has eliminated deformation process dislocation tangle.At deformation+electric pulse
The Cu-Ni-Mn alloy structure for managing preparation is uniform, and crystallite dimension is substantially distributed in 5 μm~10 μ ms, original as cast condition dendrite
Crystal grain becomes tiny equiax crystal crystal grain, and crystal grain is sufficiently refined, and the Cu-Ni-Mn alloy rigidity after Electric Pulse Treatment
It is worth up to 160HB.
Embodiment 1
It prepares fine grain Cu-Ni-Mn alloy: Cu-Ni-Mn alloy is prepared using vacuum induction melting method, using T2 fine copper,
Electrolytic nickel, electrolytic manganese are 2:2:6 proportion ingredient according to mass ratio, and smelting temperature is carried out at 1145 DEG C, and furnace charge is protected after being completely melt
Then warm 5min adds the alterant boron powder of quality of furnace charge 0.1%, is poured, is obtained with water cooled copper mould again after heating stirring 15min
Cu-Ni-Mn alloy cast ingot；
Cu-Ni-Mn alloy cast ingot after vacuum induction melting is placed in hydrogen heating furnace, sets heating temperature as 845
DEG C, soaking time is that 110min carries out Homogenization Treatments, and the hot rolling under the treatment temperature after heat preservation, control finishing temperature is not
Lower than 745 DEG C, plate thickness control is in 5mm or so after rolling.
Cu-Ni-Mn sheet alloy surface after hot rolling treatment is polished, recycles horizontal cold-rolling mill in room temperature environment
Lower progress cold deformation processing, it is 20% that deformation process, which controls alloy deformation amount, and deformation process back and forth guarantees twice per pass
Each section deforms uniformity.
Will through room temperature cold deformation, treated that Cu-Ni-Mn sheet alloy surface is polished, then set charging voltage as
60V, pulse frequency 375Hz, electrical pulse processing time 150s, after treatment is air-cooled, and it is uniformly tiny etc. for obtaining crystal grain
Axialite, the Cu-Ni-Mn alloy of no microsegregation.
Embodiment 2
Deformation+Electric Pulse Treatment prepares fine grain Cu-Ni-Mn alloy, prepares Cu-Ni-Mn using vacuum induction melting method
Alloy uses T2 fine copper, electrolytic nickel, electrolytic manganese according to mass ratio for 2:2:6 proportion ingredient, and smelting temperature is carried out at 1165 DEG C,
Heat preservation 10min adds alterant boron powder etc. after furnace charge is completely melt, is poured again with water cooled copper mould after heating stirring 20min, obtains Cu-
Ni-Mn alloy cast ingot；
Cu-Ni-Mn alloy cast ingot after vacuum induction melting is placed in hydrogen heating furnace, sets heating temperature as 855
DEG C, soaking time is that 130min carries out Homogenization Treatments, and the hot rolling under the treatment temperature after heat preservation, control finishing temperature is not
Lower than 755 DEG C, plate thickness control is in 5mm or so after rolling；
Cu-Ni-Mn sheet alloy surface after hot rolling treatment is polished, recycles horizontal cold-rolling mill in room temperature environment
Lower progress cold deformation processing, it is 50% that deformation process, which controls alloy deformation amount, and deformation process back and forth guarantees twice per pass
Each section deforms uniformity；
Will through room temperature cold deformation, treated that Cu-Ni-Mn sheet alloy surface is polished, then set charging voltage as
50V, pulse frequency 325Hz, electrical pulse processing time 300s, after treatment is air-cooled, and it is uniformly tiny etc. for obtaining crystal grain
Axialite, the Cu-Ni-Mn alloy of no microsegregation, hardness is 165HB after alloy treatment.
The Cu-Ni-Mn obtained in such a way that deformation+Electric Pulse Treatment combines under the present embodiment is illustrated in figure 2 to close
Payment organization, it can be seen that Cu-Ni-Mn alloy grain is by size after hot rolling deformation, cold rolling at room temperature deformation and Electric Pulse Treatment
Non-uniform coarse dendrite is evolved into uniformly tiny equiax crystal crystal grain, organizes more uniform；
Be as shown in Figure 3 under the present embodiment using the Cu-Ni-Mn alloy and induction melting after deformation+Electric Pulse Treatment after
Alloy rigidity comparing result: Cu-Ni-Mn alloy rigidity is 165HB under the embodiment of the present invention as can see from Figure 3, and is felt
Answering alloy rigidity after melting is 105HB.
Embodiment 3
Prepare fine grain Cu-Ni-Mn alloy: using vacuum induction melting method prepare Cu-Ni-Mn alloy, using T2 fine copper,
Electrolytic nickel, electrolytic manganese are 2:2:6 proportion ingredient according to mass ratio, and smelting temperature is carried out at 1150 DEG C, and furnace charge is protected after being completely melt
Then warm 8min adds the alterant boron powder of quality of furnace charge 0.1%, is poured, is obtained with water cooled copper mould again after heating stirring 18min
Cu-Ni-Mn alloy cast ingot.
Cu-Ni-Mn alloy cast ingot after vacuum induction melting is placed in hydrogen heating furnace, sets heating temperature as 850
DEG C, soaking time is that 120min carries out Homogenization Treatments, and the hot rolling under the treatment temperature after heat preservation, control finishing temperature is not
Lower than 750 DEG C, plate thickness control is in 5mm or so after rolling；
Cu-Ni-Mn sheet alloy surface after hot rolling treatment is polished, recycles horizontal cold-rolling mill in room temperature environment
Lower progress cold deformation processing, it is 38% that deformation process, which controls alloy deformation amount, and deformation process back and forth guarantees twice per pass
Each section deforms uniformity；
Will through room temperature cold deformation, treated that Cu-Ni-Mn sheet alloy surface is polished, then set charging voltage as
40V, pulse frequency 275Hz, electrical pulse processing time 600s, after treatment is air-cooled, and it is uniformly tiny etc. for obtaining crystal grain
Axialite, the Cu-Ni-Mn alloy of no microsegregation.
It is illustrated in figure 4 the Cu-Ni-Mn alloy grain size result that embodiment 1-3 is obtained.
Embodiment 4
It prepares fine grain Cu-Ni-Mn alloy: Cu-Ni-Mn alloy, electrolytic nickel, electrolysis is prepared using vacuum induction melting method
Manganese, T2 fine copper are 2:2:6 proportion ingredient according to mass ratio, and smelting temperature is carried out at 1155 DEG C, and furnace charge is kept the temperature after being completely melt
Then 10min adds the alterant boron powder of quality of furnace charge 0.1%, is poured, is obtained with water cooled copper mould again after heating stirring 20min
Cu-Ni-Mn alloy cast ingot.
Cu-Ni-Mn alloy cast ingot after vacuum induction melting is placed in hydrogen heating furnace, sets heating temperature as 848
DEG C, soaking time is that 125min carries out Homogenization Treatments, and the hot rolling under the treatment temperature after heat preservation, control finishing temperature is not
Lower than 753 DEG C, plate thickness control is in 5mm or so after rolling；
Cu-Ni-Mn sheet alloy surface after hot rolling treatment is polished, recycles horizontal cold-rolling mill in room temperature environment
Lower progress cold deformation processing, it is 50% that deformation process, which controls alloy deformation amount, and deformation process back and forth guarantees twice per pass
Each section deforms uniformity；
Will through room temperature cold deformation, treated that Cu-Ni-Mn sheet alloy surface is polished, then set charging voltage as
60V, pulse frequency 375Hz, electrical pulse processing time 300s, after treatment is air-cooled, and it is uniformly tiny etc. for obtaining crystal grain
Axialite, the Cu-Ni-Mn alloy of no microsegregation.
Embodiment 5
It prepares fine grain Cu-Ni-Mn alloy: Cu-Ni-Mn alloy, electrolytic nickel, electrolysis is prepared using vacuum induction melting method
Manganese, T2 fine copper are 2:2:6 proportion ingredient according to mass ratio, and smelting temperature is carried out at 1165 DEG C, and furnace charge is kept the temperature after being completely melt
Then 7min adds the alterant boron powder of quality of furnace charge 0.1%, is poured, is obtained with water cooled copper mould again after heating stirring 16min
Cu-Ni-Mn alloy cast ingot；
Cu-Ni-Mn alloy cast ingot after vacuum induction melting is placed in hydrogen heating furnace, sets heating temperature as 855
DEG C, soaking time is that 12min carries out Homogenization Treatments, and the hot rolling under the treatment temperature after heat preservation, control finishing temperature is not
Lower than 755 DEG C, plate thickness control is in 5mm or so after rolling；
Cu-Ni-Mn sheet alloy surface after hot rolling treatment is polished, recycles horizontal cold-rolling mill in room temperature environment
Lower progress cold deformation processing, it is 38% that deformation process, which controls alloy deformation amount, and deformation process back and forth guarantees twice per pass
Each section deforms uniformity.
Will through room temperature cold deformation, treated that Cu-Ni-Mn sheet alloy surface is polished, then set charging voltage as
50V, pulse frequency 325Hz, electrical pulse processing time 300s, after treatment is air-cooled, and it is uniformly tiny etc. for obtaining crystal grain
Axialite, the Cu-Ni-Mn alloy of no microsegregation.
Claims (10)
1. a kind of method for preparing fine grain Cu-Ni-Mn alloy, which is characterized in that specific step is as follows:
Step 1, Cu-Ni-Mn alloy is prepared using vacuum induction melting method；
Step 2, the Cu-Ni-Mn alloy cast ingot prepared through step 1 is subjected to high temperature hot rolling deformation, obtains Cu-Ni-Mn alloy sheets
Material；
Step 3, the Cu-Ni-Mn sheet alloy obtained through step 2 is subjected to room temperature cold deformation processing；
Step 4, the Cu-Ni-Mn sheet alloy after step 3 cold deformation is subjected to Electric Pulse Treatment, obtains fine grain Cu-Ni-
Mn alloy.
2. a kind of method for preparing fine grain Cu-Ni-Mn alloy according to claim 1, which is characterized in that the step
The detailed process of Cu-Ni-Mn alloy is prepared in 1 using vacuum induction melting method are as follows: electrolytic nickel, electrolytic manganese and copper are according to mass ratio
Ingredient is carried out for 2:2:6, smelting temperature is 1135 DEG C~1165 DEG C, keeps the temperature after ingredient is completely melt, ingredient matter is then added
0.1% alterant is measured, is poured again with water cooled copper mould after heating stirring 15min~20min, obtains Cu-Ni-Mn alloy cast ingot.
3. a kind of method for preparing fine grain Cu-Ni-Mn alloy according to claim 2, which is characterized in that the copper is
T2 fine copper.
4. a kind of method for preparing fine grain Cu-Ni-Mn alloy according to claim 2, which is characterized in that described rotten
Agent is boron powder.
5. a kind of method for preparing fine grain Cu-Ni-Mn alloy according to claim 2, which is characterized in that the ingredient
It is completely melt that rear soaking time is 5min~10min.
6. a kind of method for preparing fine grain Cu-Ni-Mn alloy according to claim 1, which is characterized in that the step
2 high temperature hot rolling deformation detailed processes are as follows: the Cu-Ni-Mn alloy cast ingot after step 1 vacuum induction melting is placed in hydrogen and is added
In hot stove, heating temperature is 845 DEG C~855 DEG C, and soaking time is 110min~130min, and temperature is not less than after heating
745 DEG C, obtain Cu-Ni-Mn sheet alloy.
7. a kind of method for preparing fine grain Cu-Ni-Mn alloy according to claim 6, which is characterized in that the Cu-
Ni-Mn sheet alloy is with a thickness of 4.5mm~5.5mm.
8. a kind of method for preparing fine grain Cu-Ni-Mn alloy according to claim 1, which is characterized in that the step
The detailed process that room temperature cold deformation is handled in 3 are as follows: the Cu-Ni-Mn sheet alloy surface obtained through step 2 is polished, so
Carry out cold deformation processing under room temperature environment using horizontal cold-rolling mill afterwards.
9. a kind of method for preparing fine grain Cu-Ni-Mn alloy according to claim 1, which is characterized in that the step
The detailed process of Electric Pulse Treatment in 4 are as follows: will through step 3, treated that Cu-Ni-Mn sheet alloy surface is polished, then
Charging voltage being set as 40V~60V, pulse frequency is 275Hz~375Hz, it is air-cooled after Electric Pulse Treatment, obtain fine grain
Cu-Ni-Mn alloy.
10. a kind of method for preparing fine grain Cu-Ni-Mn alloy according to claim 9, which is characterized in that the electricity
Pulse handles the time as 150s~600s.
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| CN113695388A (en) * | 2021-08-31 | 2021-11-26 | 山西春雷铜材有限责任公司 | Production method of copper-manganese-nickel hot rolled coil |
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| CN111004936A (en) * | 2019-12-30 | 2020-04-14 | 西安理工大学 | Preparation method of high-strength and high-corrosion-resistance Cu-Ni-Mn alloy |
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| CN113695388B (en) * | 2021-08-31 | 2023-08-08 | 山西春雷铜材有限责任公司 | Production method of copper-manganese-nickel hot rolled coil |
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Application publication date: 20190917 |