CN110306080A - A kind of new type corrosion resistant nickel-base alloy and its production technology - Google Patents
A kind of new type corrosion resistant nickel-base alloy and its production technology Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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Abstract
The present invention discloses a kind of new type corrosion resistant nickel-base alloy and its production technology, wherein nickel-base alloy composition by weight percent are as follows: Cu29.5%~31.5%；Al2.67%~3.45%；Fe1.36%~1.83%；Cr1.23%~1.48%；Mn0.86%~1.13%；Ti0.53%~0.82%；Nb0.34%~0.61%；Ta0.29%~0.57%；Si0.31%~0.44%；C0.046%~0.085%；S≤0.005%；Ni supplies surplus.The new type corrosion resistant nickel-base alloy has following distinguishing feature: metallic element Ni is face-centred cubic structure, has fabulous crystallography stability, can accommodate more alloying element, and after alloying element cu and Cr is added, the thermodynamic stability of alloy is significantly improved；The metallic elements such as Cr, Nb, Ta can aoxidize to form fine and close passivating film in alloy surface, dramatically increase the corrosion resistance of alloy material；The nonmetalloids such as the metallic elements such as Al, Ti, Fe, Mn and Si, C, S, significantly improve the comprehensive mechanical property of alloy material.In addition, the present invention prepares nickel-base alloy using the production technology of admittedly molten added-time effect, microstructure of the alloy uniformity, alloy finished product quality are stablized.
Description
Technical field
The present invention relates to technical field of alloy material, specially a kind of new type corrosion resistant nickel-base alloy and its production technology.
Background technique
Heat exchanger peculiar to vessel is the important equipment of marine engine room, for realizing the heat exchange of medium inside and outside heat exchanger.Heat exchanger
With extensive use, in the central cooler of ship, cylinder sleeve water cooler, engine cooling apparatus, host cooler, recirculated water cooling
But there is use on the devices such as device, seawater preheating device, waste-heat recovery device and sea water desalination host.For in marine environment
The ship of operation, since seawater obtains, convenient, cost is extremely low, usually using heat exchanging fluid of the seawater as heat exchanger peculiar to vessel
Medium.However, since seawater has stronger corrosivity, so that heat exchanger etching problem is especially prominent, heat exchange caused by corroding
The problems such as device line clogging, leakage, happens occasionally, and not only reduces heat exchange efficiency, in some instances it may even be possible to cause the accident.Statistical result shows
In the reason of causing heat exchanger to damage, 90% is as caused by seawater corrosion problem.
Serious seawater corrosion problem has shell, plate, valve, the flange etc. of composition heat exchanger with seawater and directly connects
The component of touching proposes higher corrosion resistance requirement.Currently, common heat exchanger is SUS304,316L etc. with corrosion resistant material
Stainless steel, copper alloy and titanium alloy etc..But existing corrosion resistant alloy material is not reasonable since its element forms, and gives birth in addition
Also existing defects on production. art, keep the service life of its seawater corrosion resistance shorter, need to be replaced frequently, costly.In addition, for valence
Lattice factor considers that most of ship for civil use selects carbon steel as heat exchanger material.Compared to the conjunction of stainless steel and addition noble metal
The corrosion resistance of Jin Gang, carbon steel are worse, and are easy to cause corrosion problem, and then aggravate the extent of corrosion of heat exchanger, cause
Huge economic loss.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of new type corrosion resistant nickel-base alloy and its production technology, have
The advantages that good sea water corrosion resistant.
(2) technical solution
For the purpose for realizing above-mentioned sea water corrosion resistant, in a first aspect, the present invention provides a kind of new type corrosion resistant nickel
Based alloy, the composition by weight percent of nickel-base alloy are as follows:
Cu:29.5%~31.5%；
Al:2.67%~3.45%；
Fe:1.36%~1.83%；
Cr:1.23%~1.48%；
Mn:0.86%~1.13%；
Ti:0.53%~0.82%；
Nb:0.34%~0.61%；
Ta:0.29%~0.57%
Si:0.31%~0.44%；
C:0.046%~0.085%；
S :≤0.005%；
Ni: surplus is supplied.
Preferably, the composition by weight percent of the nickel-base alloy are as follows: Cu:31.5%, Al:2.67%, Fe:1.36%,
Cr:1.23%, Mn:0.86%, Ti:0.53%, Nb:0.34%, Ta:0.29%, Si:0.31%, C:0.046%, S:
0.002%, surplus Ni.
Preferably, the composition by weight percent of the nickel-base alloy are as follows: Cu:29.5%, Al:3.15%, Fe:1.83%,
Cr:1.48%, Mn:1.13%, Ti:0.82%, Nb:0.61%, Ta:0.57%, Si:0.44%, C:0.085%, S:
0.005%, surplus Ni.
Preferably, the composition by weight percent of the nickel-base alloy are as follows: Cu:30.5%, Al:3.27%, Fe:1.64%,
Cr:1.37%, Mn:0.93%, Ti:0.69%, Nb:0.51%, Ta:0.46%, Si:0.38%, C:0.068%, S:
0.0035%, surplus Ni.
On the other hand, the present invention provides a kind of production technologies of new type corrosion resistant nickel-base alloy, comprising the following steps:
S10, each component for weighing following weight percent are put into vacuum melting furnace for vacuum melting:
Cu:29.5%~31.5%；
Al:2.67%~3.45%；
Fe:1.36%~1.83%；
Cr:1.23%~1.48%；
Mn:0.86%~1.13%；
Ti:0.53%~0.82%；
Nb:0.34%~0.61%；
Ta:0.29%~0.57%；
Si:0.31%~0.44%；
C:0.046%~0.085%；
Ni: surplus is supplied；
S20, the in-furnace temperature of vacuum melting furnace is maintained to 1550 DEG C~1630 DEG C, 1~1.5h of vacuum melting；
S30, production melt is stood into curing 0.5h at 1500 DEG C~1550 DEG C；
S40, production melt is poured into casting mould, room temperature is cooling, and ingot casting is made；
S50, the ingot casting is carried out to cut riser and descaling treatment；
S60, ingot casting is heated to 1200 DEG C~1250 DEG C, carries out forging and stamping processing, forging is made；
S70, forging is heat-treated, nickel-base alloy finished product is made.
Preferably, the heat treatment process are as follows: forging is heated to 480 DEG C ± 5 DEG C from room temperature in the heat treatment furnace, and is protected
1.5~2h of temperature；Continue to be heated to 720 DEG C ± 5 DEG C, and keeps the temperature 12~16h；Subsequent forging is down to 480 DEG C ± 5 from 720 DEG C ± 5 DEG C
DEG C, cooling is 10~12 hours time-consuming, then cools to room temperature with the furnace, and nickel-base alloy finished product is made.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of new type corrosion resistant nickel-base alloy and its production technology, have following
The utility model has the advantages that
1, the comprehensive performance of alloy is in the type for each element for fundamentally depending on adding in alloy, content and production work
Skill.New type corrosion resistant nickel-base alloy in the present invention is by 12 kinds of metals such as Ni, Cu, Al, Fe, Cr, Mn, Ti, Nb, Ta, Si, C and S
And the multicomponent alloy of nonmetalloid composition, the proportion of each alloying element are reasonable；The preparation process imitated simultaneously using the admittedly molten added-time,
Methodological science is advanced.
2, the new type corrosion resistant nickel-base alloy in the present invention has following distinguishing feature: 1) the metallic element Ni in alloy is face
Heart cubic structure has fabulous crystallography stability, can accommodate more alloying element, and alloying element cu and Cr is being added
Afterwards, the thermodynamic stability of alloy significantly improves, and being formed by multicomponent alloy is single-phase solid solution, and uniformity consistency is good；2)
The metallic elements such as Cr, Nb, the Ta added in the alloy are easy to form fine and close passivation in alloy surface in Oxidant
Film, the passivating film have excellent corrosion resistance；The metallic elements such as Al, Ti, Fe, the Mn 3) added in the alloy and Si,
C, the nonmetalloids such as S can significantly improve the comprehensive mechanical property of alloy material；4) using the production technology of admittedly molten added-time effect
New type corrosion resistant nickel-base alloy is prepared, microstructure of the alloy uniformity, alloy finished product quality are stablized.
3, the new type corrosion resistant nickel-base alloy and its production technology, compared with having similar corrosion resistant alloy, of the invention is novel
Corrosion-resistant nickel-base alloy has following dramatically different: 1) comprehensive mechanical property is different: test result shows novel resistance in the present invention
The room temperature tensile strength of erosion nickel-base alloy can achieve 1370MP, and yield strength can achieve 935MPa, and elongation percentage can achieve
27%, hardness can achieve 34.5HRC, and the technical level of conventional nickel-based alloys is (such as before the remote superorder of comprehensive mechanical property index
The tensile strength of certain model nickel-base alloy Monel K500 is 896MPa, yield strength 551MPa, elongation 20%)；2)
Corrosion Resistant Mechanism is different: existing corrosion resistant alloy mainly delays to corrode by improving the comprehensive mechanical property of alloy；Of the invention
New type corrosion resistant nickel-base alloy is while significantly improving alloy comprehensive mechanical property, also by the way that the metals such as Cr, Nb, Ta member is added
Element makes it aoxidize to form one layer of fine and close passivating film in alloy surface, reaches dual corrosion resistant effect；3) corrosion resistance is not
Same: new type corrosion resistant nickel-base alloy of the invention, rationally due to alloying element proportion, production technology section emulates the advanced, made conjunction
Corrosion resistance of the gold in the corrosive medias such as acidity, seawater, salt fog, atmosphere is very excellent, is significantly better than existing at present
Corrosion-resistant nickel-base alloy.Corrosion-resistant in actual environment the experimental results showed that, New Nickel-Based Alloy of the invention to various concentration and
At a temperature of hydrofluoric acid show corrosion resistance；Different from conventional nickel-based alloys such as monel metal etc., New Nickel of the invention
Based alloy is greater than concentration in addition to having corrosion resistance for low-concentration sulfuric acid due to the addition of the alloying elements such as Cr, Nb, Ta
85% sulfuric acid also shows good corrosion resisting property；Corrosion rate in seawater different in flow rate is respectively less than 0.013mm/a, and
The corrosion rate of monel metal is 0.020mm/a；In 150 DEG C~250 DEG C of high-temperature steam, test 1500 hours, this hair
The corrosion rate of bright nickel-base alloy is 0.015mm/a, and the corrosion rate of monel metal is 0.026mm/a under identical operating condition, by
Nickel-base alloy in the present invention has good corrosion resistance, the heat exchanger peculiar to vessel made of the nickel-base alloy, seawater
Etching problem is effectively suppressed, and service life averagely improves 2~4 times, and long period heat exchange efficiency improves 65% or more.
Detailed description of the invention
Fig. 1 show the micro- metallographic microscope of new type corrosion resistant nickel-base alloy finished product tissue of the invention.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment one
A kind of new type corrosion resistant nickel-base alloy:
New type corrosion resistant nickel-base alloy, composition by weight percent are as follows: Cu:31.5%, Al:2.67%, Fe:1.36%, Cr:
1.23%, Mn:0.86%, Ti:0.53%, Nb:0.34%, Ta:0.29%, Si:0.31%, C:0.046%, S:0.002%,
Surplus is Ni；
The production technology of new type corrosion resistant nickel-base alloy, comprising the following steps:
S10, raw material, the weight percent composition of raw material are chosen are as follows: 31.5% fine copper, 2.67% electrolytic aluminium,
1.36% iron powder, 1.23% pure chromium, 0.86% electrolytic manganese, 0.53% pure titanium, 0.34% niobium, 0.29% tantalum,
0.31% pure silicon, 0.046% carbon dust, 0.002% sulphur, the electrolytic nickel of surplus；Raw material is put into vacuum intermediate-frequency smelting furnace
Interior carry out melting；
S20, the in-furnace temperature of vacuum melting furnace is warming up to 1580 DEG C, then the temperature in vacuum melting furnace is maintained at
1580 DEG C of progress vacuum meltings continue 1h；
S30, the melt produced after vacuum melting is stood to curing 0.5h at 1500 DEG C；
S40, the melt stood after curing is poured into casting mould, then carries out room temperature cooling, ingot casting is made；
S50, manufactured ingot casting is carried out to cut riser and descaling treatment；
S60, the ingot casting after cutting riser and scale removal is heated to 1200 DEG C, carries out forging and stamping processing, forging is made
Part；
Carry out following heat treatment in the heat treatment furnace to gained forging after S70, forging and stamping: gained forging is being heat-treated
475 DEG C are heated to from room temperature in furnace, heating is 2 hours time-consuming, keeps the temperature 1.5 hours, and then forging is heated to 715 DEG C from 475 DEG C, rises
It is warm 2 hours time-consuming, 12 hours are kept the temperature, forging is down to 475 DEG C from 715 DEG C later, and cooling is 10 hours time-consuming, then with heat-treatment furnace
It is cooled to room temperature, nickel-base alloy finished product is made.
Nickel-base alloy finished surface 5 different random sites are clicked through using X-ray photoelectron spectroscopic analysis instrument (XPS)
The measurement and analysis of alloying element type and content are gone.The Measurement results of each element power spectrum are shown: 1) obtained by
Contain elements different in Cu, Al, Fe, Cr, Mn, Ti, Nb, Ta, Si, C, S and Ni etc. 12 in alloy；2) in 5 different tests
The content consistency of location point, each alloying element is fabulous；3) mean value of the weight percent of each alloying element are as follows: Cu:31.5%,
Al:2.67%, Fe:1.36%, Cr:1.23%, Mn:0.86%, Ti:0.53%, Nb:0.34%, Ta:0.29%, Si:
0.31%, C:0.046%, S:0.002%, Ni:60.86%.
Be respectively adopted scanning electron microscope (SEM) and metallographic microscope to the section of prepared nickel-base alloy finished product into
The detection of row surface characteristic and analysis (please referring to Fig. 1).The result shows that the microstructure and tissue of obtained nickel-base alloy finished product
The uniformity of metallographic is preferable.
Mechanics Performance Testing has been carried out to obtained nickel-base alloy finished product, the results showed that, room temperature tensile strength is
1350MP, yield strength 935MPa, elongation percentage 22%, hardness 33.2HRC.
The corrosion resistance test under different operating conditions has been carried out to obtained nickel-base alloy finished product, the results showed that, the Ni-based conjunction
Gold shows corrosion resistance to hydrofluoric acid of the various concentration at a temperature of；In addition to there is corrosion resistance for low-concentration sulfuric acid, for
Sulfuric acid of the concentration greater than 85% also shows good corrosion resisting property；Corrosion rate in seawater different in flow rate is respectively less than
0.013mm/a；It in 250 DEG C of high-temperature steam, tests 1500 hours, the corrosion rate of the nickel-base alloy is 0.015mm/a.
Various test results in the present embodiment show a kind of new type corrosion resistant nickel-base alloy provided by the invention and its production
Technique, since each alloying element proportion design is reasonable, after the production technology using admittedly molten added-time effect, obtained nickel-base alloy at
Each element in product is uniformly distributed in the alloy, metallographic structure uniformity；Crystallography stability is good, and comprehensive mechanical property is excellent
It is different；Each alloying element passes through the mechanical property of raising alloy material and forms the different roles mechanism such as passivating film in alloy surface,
So that obtained nickel-base alloy finished product shows fabulous corrosion resistance in different corrosive mediums.
Embodiment two
A kind of new type corrosion resistant nickel-base alloy and its production technology:
New type corrosion resistant nickel-base alloy, composition by weight percent are as follows: Cu:29.5%, Al:3.15%, Fe:1.83%, Cr:
1.48%, Mn:1.13%, Ti:0.82%, Nb:0.61%, Ta:0.57%, Si:0.44%, C:0.085%, S:0.005%,
Surplus is Ni.
The production technology of new type corrosion resistant nickel-base alloy, comprising the following steps:
S10, raw material, the weight percent composition of raw material are chosen are as follows: 29.5% fine copper, 3.15% electrolytic aluminium,
1.83% iron powder, 1.48% pure chromium, 1.13% electrolytic manganese, 0.82% pure titanium, 0.61% niobium, 0.57% tantalum,
0.44% pure silicon, 0.085% carbon dust, 0.005% sulphur, the electrolytic nickel of surplus；Raw material is put into vacuum intermediate-frequency smelting furnace
Interior carry out melting；
S20, the in-furnace temperature of vacuum melting furnace is warming up to 1630 DEG C, then the temperature in vacuum melting furnace is maintained at
1630 DEG C of progress vacuum meltings continue 1.5h；
S30, the melt produced after vacuum melting is stood to curing 0.5h at 1550 DEG C；
S40, the melt stood after curing is poured into casting mould, then carries out room temperature cooling, ingot casting is made；
S50, manufactured ingot casting is carried out to cut riser and descaling treatment；
S60, the ingot casting after cutting riser and scale removal is heated to 1250 DEG C, carries out forging and stamping processing, forging is made
Part；
Carry out following heat treatment in the heat treatment furnace to gained forging after S70, forging and stamping: gained forging is being heat-treated
485 DEG C are heated to from room temperature in furnace, heating is 2 hours time-consuming, keeps the temperature 2 hours, and then forging is heated to 725 DEG C from 485 DEG C, heating
It is 2 hours time-consuming, 16 hours are kept the temperature, forging is down to 485 DEG C from 725 DEG C later, and cooling is 12 hours time-consuming, then cools to room with the furnace
Nickel-base alloy finished product is made in temperature.
Nickel-base alloy finished surface 5 different random sites are clicked through using X-ray photoelectron spectroscopic analysis instrument (XPS)
The measurement and analysis of alloying element type and content are gone.The Measurement results of each element power spectrum are shown: 1) obtained by
Contain elements different in Cu, Al, Fe, Cr, Mn, Ti, Nb, Ta, Si, C, S and Ni etc. 12 in alloy；2) in 5 different tests
The content consistency of location point, each alloying element is fabulous；3) mean value of the weight percent of each alloying element are as follows: Cu:29.5%,
Al:3.15%, Fe:1.83%, Cr:1.48%, Mn:1.13%, Ti:0.82%, Nb:0.61%, Ta:0.57%, Si:
0.44%, C:0.085%, S:0.005%, Ni:60.38%.
Be respectively adopted scanning electron microscope (SEM) and metallographic microscope to the section of prepared nickel-base alloy finished product into
The detection of row surface characteristic and analysis (please referring to Fig. 1).The result shows that the microstructure and tissue of obtained nickel-base alloy finished product
The uniformity of metallographic is preferable.
Mechanics Performance Testing has been carried out to obtained nickel-base alloy finished product, the results showed that, room temperature tensile strength is
1278MP, yield strength 891MPa, elongation percentage 27%, hardness 32.7HRC.
The corrosion resistance test under different operating conditions has been carried out to obtained nickel-base alloy finished product, the results showed that, the Ni-based conjunction
Gold shows corrosion resistance to hydrofluoric acid of the various concentration at a temperature of；In addition to there is corrosion resistance for low-concentration sulfuric acid, for
Sulfuric acid of the concentration greater than 85% also shows good corrosion resisting property；Corrosion rate in seawater different in flow rate is respectively less than
0.013mm/a；It in 250 DEG C of high-temperature steam, tests 1500 hours, the corrosion rate of the nickel-base alloy is 0.015mm/a.
Various test results in the present embodiment show a kind of new type corrosion resistant nickel-base alloy provided by the invention and its production
Technique, since each alloying element proportion design is reasonable, after the production technology using admittedly molten added-time effect, obtained nickel-base alloy at
Each element in product is uniformly distributed in the alloy, metallographic structure uniformity；Crystallography stability is good, and comprehensive mechanical property is excellent
It is different；Each alloying element passes through the mechanical property of raising alloy material and forms the different roles mechanism such as passivating film in alloy surface,
So that obtained nickel-base alloy finished product shows fabulous corrosion resistance in different corrosive mediums.
Embodiment three
A kind of new type corrosion resistant nickel-base alloy:
New type corrosion resistant nickel-base alloy, composition by weight percent are as follows: Cu:30.5%, Al:3.27%, Fe:1.64%, Cr:
1.37%, Mn:0.93%, Ti:0.69%, Nb:0.51%, Ta:0.46%, Si:0.38%, C:0.068%, S:
0.0035%, surplus Ni.
The production technology of new type corrosion resistant nickel-base alloy, comprising the following steps:
S10, raw material, the weight percent composition of raw material are chosen are as follows: 30.5% fine copper, 3.27% electrolytic aluminium,
1.64% iron powder, 1.37% pure chromium, 0.93% electrolytic manganese, 0.69% pure titanium, 0.51% niobium, 0.46% tantalum,
0.38% pure silicon, 0.068% carbon dust, 0.0035% sulphur, the electrolytic nickel of surplus；Raw material is put into vacuum intermediate-frequency smelting furnace
Interior carry out melting；
S20, the in-furnace temperature of vacuum melting furnace is warming up to 1600 DEG C, then the temperature in vacuum melting furnace is maintained at
1600 DEG C of progress vacuum melting 1.5h；
S30, the melt produced after vacuum melting is stood to curing 0.5h at 1530 DEG C；
S40, the melt stood after curing is poured into casting mould, then carries out room temperature cooling, ingot casting is made；
S50, manufactured ingot casting is carried out to cut riser and descaling treatment；
S60, ingot casting is heated to 1230 DEG C, carries out forging and stamping processing, forging is made；
Carry out following heat treatment in the heat treatment furnace to gained forging after S70, forging and stamping: gained forging is being heat-treated
480 DEG C are heated to from room temperature in furnace, heating is 2 hours time-consuming, keeps the temperature 2 hours, and then forging is heated to 720 DEG C from 480 DEG C, heating
It is 2 hours time-consuming, 14 hours are kept the temperature, forging is down to 480 DEG C from 720 DEG C later, and cooling is 11 hours time-consuming, then cools to room with the furnace
Nickel-base alloy finished product is made in temperature.
Nickel-base alloy finished surface 5 different random sites are clicked through using X-ray photoelectron spectroscopic analysis instrument (XPS)
The measurement and analysis of alloying element type and content are gone.The Measurement results of each element power spectrum are shown: 1) obtained by
Contain elements different in Cu, Al, Fe, Cr, Mn, Ti, Nb, Ta, Si, C, S and Ni etc. 12 in alloy；2) in 5 different tests
The content consistency of location point, each alloying element is fabulous；3) mean value of the weight percent of each alloying element are as follows: Cu:30.5%,
Al:3.27%, Fe:1.64%, Cr:1.37%, Mn:0.93%, Ti:0.69%, Nb:0.51%, Ta:0.46%, Si:
0.38%, C:0.068%, S:0.0035%, Ni:60.1785%.
Be respectively adopted scanning electron microscope (SEM) and metallographic microscope to the section of prepared nickel-base alloy finished product into
The detection of row surface characteristic and analysis (please referring to Fig. 1).The result shows that the microstructure and tissue of obtained nickel-base alloy finished product
The uniformity of metallographic is preferable.
Mechanics Performance Testing has been carried out to obtained nickel-base alloy finished product, the results showed that, room temperature tensile strength is
1233MP, yield strength 857MPa, elongation percentage 24%, hardness 34.5HRC.
The corrosion resistance test under different operating conditions has been carried out to obtained nickel-base alloy finished product, the results showed that, the Ni-based conjunction
Gold shows corrosion resistance to hydrofluoric acid of the various concentration at a temperature of；In addition to there is corrosion resistance for low-concentration sulfuric acid, for
Sulfuric acid of the concentration greater than 85% also shows good corrosion resisting property；Corrosion rate in seawater different in flow rate is respectively less than
0.013mm/a；It in 250 DEG C of high-temperature steam, tests 1500 hours, the corrosion rate of the nickel-base alloy is 0.015mm/a.
Various test results in the present embodiment show a kind of new type corrosion resistant nickel-base alloy provided by the invention and its production
Technique, since each alloying element proportion design is reasonable, after the production technology using admittedly molten added-time effect, obtained nickel-base alloy at
Each element in product is uniformly distributed in the alloy, metallographic structure uniformity；Crystallography stability is good, and comprehensive mechanical property is excellent
It is different；Each alloying element passes through the mechanical property of raising alloy material and forms the different roles mechanism such as passivating film in alloy surface,
So that obtained nickel-base alloy finished product shows fabulous corrosion resistance in different corrosive mediums.
The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of new type corrosion resistant nickel-base alloy, it is characterised in that: the composition by weight percent of the nickel-base alloy are as follows:
Cu:29.5%~31.5%；
Al:2.67%~3.45%；
Fe:1.36%~1.83%；
Cr:1.23%~1.48%；
Mn:0.86%~1.13%；
Ti:0.53%~0.82%；
Nb:0.34%~0.61%；
Ta:0.29%~0.57%
Si:0.31%~0.44%；
C:0.046%~0.085%；
S :≤0.005%；
Ni: surplus is supplied.
2. a kind of new type corrosion resistant nickel-base alloy according to claim 1, it is characterised in that: the ingredient weight of the nickel-base alloy
Measure percentage are as follows: Cu:31.5%, Al:2.67%, Fe:1.36%, Cr:1.23%, Mn:0.86%, Ti:0.53%, Nb:
0.34%, Ta:0.29%, Si:0.31%, C:0.046%, S:0.002%, surplus Ni.
3. a kind of new type corrosion resistant nickel-base alloy according to claim 1, it is characterised in that: the ingredient weight of the nickel-base alloy
Measure percentage are as follows: Cu:29.5%, Al:3.15%, Fe:1.83%, Cr:1.48%, Mn:1.13%, Ti:0.82%, Nb:
0.61%, Ta:0.57%, Si:0.44%, C:0.085%, S:0.005%, surplus Ni.
4. a kind of new type corrosion resistant nickel-base alloy according to claim 1, it is characterised in that: the ingredient weight of the nickel-base alloy
Measure percentage are as follows: Cu:30.5%, Al:3.27%, Fe:1.64%, Cr:1.37%, Mn:0.93%, Ti:0.69%, Nb:
0.51%, Ta:0.46%, Si:0.38%, C:0.068%, S:0.0035%, surplus Ni.
5. a kind of production technology of new type corrosion resistant nickel-base alloy, which comprises the following steps:
S10, each component for weighing following weight percent are put into vacuum melting furnace for vacuum melting:
Cu:29.5%~31.5%；
Al:2.67%~3.45%；
Fe:1.36%~1.83%；
Cr:1.23%~1.48%；
Mn:0.86%~1.13%；
Ti:0.53%~0.82%；
Nb:0.34%~0.61%；
Ta:0.29%~0.57%；
Si:0.31%~0.44%；
C:0.046%~0.085%；
Ni: surplus is supplied；
S20, the in-furnace temperature of vacuum melting furnace is maintained to 1550 DEG C~1630 DEG C, 1~1.5h of vacuum melting；
S30, production melt is stood into curing 0.5h at 1500 DEG C~1550 DEG C；
S40, production melt is poured into casting mould, room temperature is cooling, and ingot casting is made；
S50, ingot casting is carried out to cut riser and descaling treatment；
S60, ingot casting is heated to 1200 DEG C~1250 DEG C, carries out forging and stamping processing, forging is made；
S70, forging is heat-treated, nickel-base alloy finished product is made.
6. a kind of production technology of new type corrosion resistant nickel-base alloy according to claim 5, it is characterised in that: the heat treatment
Technique are as follows: forging is heated to 480 DEG C ± 5 DEG C from room temperature in the heat treatment furnace, and keeps the temperature 1.5~2h；Continue to be heated to 720 DEG C
± 5 DEG C, and keep the temperature 12~16h；Subsequent forging is down to 480 DEG C ± 5 DEG C from 720 DEG C ± 5 DEG C, and cooling is 10~12 hours time-consuming, so
After cool to room temperature with the furnace, be made nickel-base alloy finished product.
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