CN107217174A - Ni Cr based high-temperature alloys and its preparation and detection method - Google Patents
Ni Cr based high-temperature alloys and its preparation and detection method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
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- C22C1/02—Making non-ferrous alloys by melting
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
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- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
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- G01N2203/0226—High temperature; Heating means
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses Ni Cr based high-temperature alloys and its preparation and detection method.Ni Cr based high-temperature alloys, by weight percentage, including C：0.05%~0.09%, Cr：14.00%~16.00%, Al：2.40%~2.70%, Ti：1.9%~2.20%, W：6.00%~7.00%, Mo：3.00%~4.00%, Co：0.40%~0.80%, V：0.40%~0.60% and surplus Ni and inevitable impurity.Ni Cr based high-temperature alloys of the present invention, composition and preparation method are optimized, and alloy material is had high tensile strength and creep rupture strength in the range of 650 DEG C~850 DEG C, reduce the content of impurity element；Solution, which is poured into, in preparation process consumes itself electrode, prepares simply, reduces manufacturing cost；Heat resistance is improved simultaneously, alloy material tissue stabilization in use and combination property is improved, so as to improve the life-span of the product manufactured by this kind of alloy material, has good economic benefit and social benefit, is adapted to promote the use of.
Description
Technical field
The present invention relates to wrought superalloy material and preparation method thereof, more particularly to Ni-Cr based high-temperature alloys and its system
Preparation Method.
Background technology
High temperature alloy plays an important role for development aero-engine and industry gas turbine.At present, turbine acc power
Continuous improvement, the demand to high-performance high-temperature alloy material also increases therewith, and existing alloy material impurity element contains
Amount is higher, and there is solution and pour into can not consume itself electrode, and heat resistance is poor, and manufacturing cost is high, manufactures complexity etc.
Shortcomings.
The content of the invention
It is an object of the invention to provide new Ni-Cr based high-temperature alloys.
Ni-Cr based high-temperature alloys, by weight percentage, including C：0.05%~0.09%, Cr：14.00%~
16.00%th, Al：2.40%~2.70%, Ti：1.9%~2.20%, W：6.00%~7.00%, Mo：3.00%~
4.00%th, Co：0.40%~0.80%, V：0.40%~0.60% and surplus Ni and inevitable impurity.
Preferably, above-mentioned Ni-Cr based high-temperature alloys, by weight percentage, including C：0.06%~0.08%,
Cr：14.80%~15.50%, Al：2.50%~2.66%, Ti：2.0%~2.10%, W：6.09%~6.78%, Mo：
3.16%~3.82%, Co：0.55%~0.78%, V：0.48%~0.56% and surplus Ni and inevitable impurity.
Preferably, above-mentioned Ni-Cr based high-temperature alloys, by weight percentage, including C：0.07%~0.08%,
Cr：15.10%~15.50%, Al：2.58%~2.66%, Ti：2.0%~2.10%, W：6.22%~6.78%, Mo：
3.36%~3.82%, Co：0.63%~0.78%, V：0.48%~0.53% and surplus Ni and inevitable impurity.
Preferably, above-mentioned impurity is：To account in terms of the high-temperature alloy material percentage by weight, Fe is less than or equal to
2.00%th, P is less than or equal to 0.010%, S and is less than or equal to less than or equal to 0.010%, B less than or equal to 0.020%, Ce
0.020%th, Cu is less than or equal to 0.10%, Si and is less than or equal to less than or equal to 0.30%, Mn less than or equal to 0.20%, Mg
0.005%.
Preferably, above-mentioned impurity is：To account in terms of the high-temperature alloy material percentage by weight, Fe is less than 2.00%, P
It is less than 0.010%, B less than 0.010%, S less than 0.020%, Ce less than 0.020%, Cu less than 0.10%, Si to be less than
0.30%th, Mn is less than 0.20%, Mg and is less than 0.005%.
Another object of the present invention is the preparation method for providing Ni-Cr based high-temperature alloys.
The preparation method of Ni-Cr based high-temperature alloys, comprises the following steps：
Step A, take needed for element melting in vaccum sensitive stove, 1500~1520 DEG C of smelting temperature, in fusion process
The content of each element is adjusted, its weight ratio is met design requirement, solution pours into consutrode；
Step B, the consutrode for pouring into step A remelting refining in consumable electrode vacuum furnace, remelting is into ESR ingot；
Step C, rod iron is made in step B ESR ingot heats forged；
Step D, will step C rod iron forging after be air-cooled to room temperature；
Step E, the rod iron surface treatment by step D, the light that enters to drive a vehicle to rod iron surface processing, eliminating surface defect simultaneously makes steel
Rod size, shape, surface quality meet design requirement.
Preferably, the operating condition of remelting refining is as follows in above-mentioned steps B：
1) vacuum：Vacuum degree of cold state ＜ 0.13Pa；
2) electric power system：Its voltage is 23V ± 1V, and electric current is 5000 ± 200A.
Preferably, above-mentioned steps C concrete operations are：Rod iron is heated to 1000~1020 DEG C, 2~4 hours are incubated
After be warming up to 1170~1190 DEG C insulation 20~30 hours jackets of coming out of the stove, reheating in furnace start after 1~2 hour forging.
Present invention also offers the mechanical property test method of Ni-Cr based high-temperature alloys, comprise the following steps：
(1) rod iron for taking the preparation method by above-mentioned Ni-Cr based high-temperature alloys to prepare is sample；
(2) sample is heat-treated, and is placed on temperature in 1210 ± 10 DEG C of environment, to carry out air cooling after insulation 2.0h, then carry out
Temperature is 1050 ± 10 DEG C, and air cooling is carried out after insulation 4.0h, and sample then is placed on into temperature for 800 ± 10 DEG C, 16.0h is incubated
Air cooling afterwards；
(3) high-temperature behavior is detected, it is 850 DEG C of environment that the sample after being heat-treated in step (2) is placed on into temperature, detects it
Tensile strength Rm >=640Mpa, elongation A >=6.0%, contraction percentage of area Z >=9.0%；Temperature is 850 DEG C, stress is
265Mpa, its stress rupture time >=50h.
Ni-Cr based high-temperature alloys of the present invention can be described as Ni-Cr based precipitation hardening type wrought superalloy materials again, be
Simplicity of exposition, the present invention is referred to as Ni-Cr based high-temperature alloys.
The present invention has the advantage that compared with prior art：Ni-Cr based high-temperature alloys of the present invention, to composition and preparation
Method is optimized, and alloy material is had high tensile strength and creep rupture strength, reduction in the range of 650 DEG C~850 DEG C
The content of impurity element；Solution, which is poured into, in preparation process consumes itself electrode, prepares simply, reduces manufacturing cost；Together
When improve heat resistance, improve alloy material tissue stabilization in use and combination property, pass through so as to improve
In the life-span of the product of this kind of alloy material manufacture, there is good economic benefit and social benefit, be adapted to promote the use of.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1Ni-Cr based high-temperature alloys and preparation method thereof, detection method
Ni-Cr based high-temperature alloys, by weight percentage, including C：0.09%th, Cr：14.00%th, Al：2.40%th, Ti：
2.20%th, W：7.00%th, Mo：3.00%th, Co：0.80%th, V：0.40%, and surplus Ni and inevitable impurity.
The preparation method of this example Ni-Cr based high-temperature alloys, comprises the following steps：
Step A, take needed for element melting in vaccum sensitive stove, 1500~1520 DEG C of smelting temperature, in fusion process
The content of each element is adjusted, its weight ratio is met design requirement, solution pours into consutrode；
Step B, the consutrode for pouring into step A remelting refining in consumable electrode vacuum furnace, remelting is into ESR ingot；Remelting
The operating condition of refining is as follows：
1), vacuum：Vacuum degree of cold state ＜ 0.13Pa；
2), electric power system：Its voltage is 23V ± 1V, and electric current is 5000 ± 200A.
Step C, rod iron is made in step B ESR ingot heats forged, concrete operations are：Rod iron is heated to 1000~
1020 DEG C, insulation is warming up to 1170~1190 DEG C of insulations, 20~30 hours jackets of coming out of the stove after 2~4 hours, and reheating in furnace 1~2 is small
When after start forging.
Step D, will step C rod iron forging after be air-cooled to room temperature；
Step E, the rod iron surface treatment by step D, the light that enters to drive a vehicle to rod iron surface processing, eliminating surface defect simultaneously makes steel
Rod size, shape, surface quality meet design requirement.
The mechanical property test method of Ni-Cr based high-temperature alloys, comprises the following steps：
(1) rod iron for taking the preparation method by above-mentioned Ni-Cr based high-temperature alloys to prepare is sample；
(2) sample is heat-treated, and is placed on temperature in 1210 ± 10 DEG C of environment, to carry out air cooling after insulation 2.0h, then carry out
Temperature is 1050 ± 10 DEG C, and air cooling is carried out after insulation 4.0h, and sample then is placed on into temperature for 800 ± 10 DEG C, 16.0h is incubated
Air cooling afterwards；
(3) high-temperature behavior is detected, it is 850 DEG C of environment that the sample after being heat-treated in step (2) is placed on into temperature, detects it
Tensile strength Rm >=640Mpa, elongation A >=6.0%, contraction percentage of area Z >=9.0%；Temperature is 850 DEG C, stress is
265Mpa, its stress rupture time >=50h.
Embodiment 2Ni-Cr based high-temperature alloys and preparation method thereof, detection method
Ni-Cr based high-temperature alloys, by weight percentage, including C：0.07%th, Cr：15.50%th, Al：2.63%th, Ti：
2.0%th, W：6.78%th, Mo：3.82%th, Co：0.63%th, V：0.51% and surplus Ni and inevitable impurity.
The preparation method of this example Ni-Cr based high-temperature alloys, comprises the following steps：
Step A, take needed for element melting in vaccum sensitive stove, 1510~1518 DEG C of smelting temperature, in fusion process
The content of each element is adjusted, its weight ratio is met design requirement, solution pours into consutrode；
Step B, the consutrode for pouring into step A remelting refining in consumable electrode vacuum furnace, remelting is into ESR ingot；Remelting
The operating condition of refining is as follows：
1), vacuum：Vacuum degree of cold state ＜ 0.13Pa；
2), electric power system：Its voltage is 23V ± 1V, and electric current is 5000 ± 200A.
Step C, rod iron is made in step B ESR ingot heats forged, concrete operations are：Rod iron is heated to 1010~
1017 DEG C, insulation is warming up to 1178~1185 DEG C of insulations, 22 hours jackets of coming out of the stove after 3.5 hours, and reheating in furnace is opened after 1.5 hours
Begin to forge.
Step D, will step C rod iron forging after be air-cooled to room temperature；
Step E, the rod iron surface treatment by step D, the light that enters to drive a vehicle to rod iron surface processing, eliminating surface defect simultaneously makes steel
Rod size, shape, surface quality meet design requirement.
The mechanical property test method of Ni-Cr based high-temperature alloys, comprises the following steps：
(1) rod iron for taking the preparation method by above-mentioned Ni-Cr based high-temperature alloys to prepare is sample；
(2) sample is heat-treated, and is placed on temperature in 1210 ± 10 DEG C of environment, to carry out air cooling after insulation 2.0h, then carry out
Temperature is 1050 ± 10 DEG C, and air cooling is carried out after insulation 4.0h, and sample then is placed on into temperature for 800 ± 10 DEG C, 16.0h is incubated
Air cooling afterwards；
(3) high-temperature behavior is detected, it is 850 DEG C of environment that the sample after being heat-treated in step (2) is placed on into temperature, detects it
Tensile strength Rm >=640Mpa, elongation A >=6.0%, contraction percentage of area Z >=9.0%；Temperature is 850 DEG C, stress is
265Mpa, its stress rupture time >=50h.
Embodiment 1 and embodiment 2Ni-Cr based high-temperature alloys are through mechanics properties testing, and its hot test data refers to table 1.
Table 1
The provable aero-engine fastener-parts manufactured using Ni-Cr based high-temperature alloys of the present invention of experimental result, energy
Enough meet the use requirement of its working environment.
Embodiment 3Ni-Cr based high-temperature alloys
Ni-Cr based high-temperature alloys, by weight percentage, including C：0.08%th, Cr：15.10%th, Al：2.66%th, Ti：
2.10%th, W：6.22%th, Mo：3.36%th, Co：0.78%th, V：0.48% and surplus Ni and inevitable impurity.
Embodiment 4Ni-Cr based high-temperature alloys
Ni-Cr based high-temperature alloys, by weight percentage, including C：0.076%th, Cr：15.40%th, Al：2.58%th, Ti：
2.07%th, W：6.61%th, Mo：3.55%th, Co：0.69%th, V：0.53% and surplus Ni and inevitable impurity.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (9)
1.Ni-Cr based high-temperature alloys, it is characterised in that by weight percentage, including C：0.05%~0.09%, Cr：
14.00%~16.00%, Al：2.40%~2.70%, Ti：1.9%~2.20%, W：6.00%~7.00%, Mo：
3.00%~4.00%, Co：0.40%~0.80%, V：0.40%~0.60% and surplus Ni and inevitable impurity.
2. Ni-Cr based high-temperature alloys according to claim 1, it is characterised in that by weight percentage, including C：
0.06%~0.08%, Cr：14.80%~15.50%, Al：2.50%~2.66%, Ti：2.0%~2.10%, W：
6.09%~6.78%, Mo：3.16%~3.82%, Co：0.55%~0.78%, V：0.48%~0.56% and surplus Ni
With inevitable impurity.
3. Ni-Cr based high-temperature alloys according to claim 2, it is characterised in that by weight percentage, including C：
0.07%~0.08%, Cr：15.10%~15.50%, Al：2.58%~2.66%, Ti：2.0%~2.10%, W：
6.22%~6.78%, Mo：3.36%~3.82%, Co：0.63%~0.78%, V：0.48%~0.53% and surplus Ni
With inevitable impurity.
4. the Ni-Cr based high-temperature alloys according to claim 1-3 any one, it is characterised in that closed with accounting for the high temperature
Golden material weight percentages, the impurity is：Fe is less than or equal to 2.00%, P and is less than or waits less than or equal to 0.010%, S
In 0.010%, B be less than or equal to 0.020%, Ce be less than or equal to 0.020%, Cu be less than or equal to 0.10%, Si be less than or
It is less than or equal to 0.20%, Mg equal to 0.30%, Mn and is less than or equal to 0.005%.
5. Ni-Cr based high-temperature alloys according to claim 4, it is characterised in that the impurity is：Closed with accounting for the high temperature
Golden material weight percentages, Fe is less than 2.00%, P and is less than less than 0.010%, S less than 0.010%, B less than 0.020%, Ce
0.020%th, Cu is less than 0.10%, Si and is less than 0.30%, Mn less than 0.20%, Mg less than 0.005%.
6. the preparation method of the Ni-Cr based high-temperature alloys described in claim 1-5 any one, it is characterised in that including following
Step：
Step A, take needed for element melting in vaccum sensitive stove, 1500~1520 DEG C of smelting temperature adjusts in fusion process
The content of each element, makes its weight ratio meet design requirement, solution pours into consutrode；
Step B, the consutrode for pouring into step A remelting refining in consumable electrode vacuum furnace, remelting is into ESR ingot；
Step C, rod iron is made in step B ESR ingot heats forged；
Step D, will step C rod iron forging after be air-cooled to room temperature；
Step E, the rod iron surface treatment by step D, the light that enters to drive a vehicle to rod iron surface processing, eliminating surface defect simultaneously makes rod iron chi
Very little, shape, surface quality meet design requirement.
7. preparation method according to claim 6, it is characterised in that the operating condition of remelting refining is such as in the step B
Under：
1) vacuum：Vacuum degree of cold state ＜ 0.13Pa；
2) electric power system：Its voltage is 23V ± 1V, and electric current is 5000 ± 200A.
8. the preparation method according to claim 6 or 7, it is characterised in that the step C concrete operations are：By rod iron plus
Heat is to 1000~1020 DEG C, and insulation is warming up to 1170~1190 DEG C of insulations, 20~30 hours jackets of coming out of the stove after 2~4 hours, melt down
Start forging after reburning 1~2 hour.
The mechanical property test method of 9.Ni-Cr based high-temperature alloys, it is characterised in that comprise the following steps：
(1) rod iron for taking the preparation method by above-mentioned Ni-Cr based high-temperature alloys to prepare is sample；
(2) sample is heat-treated, and is placed on temperature in 1210 ± 10 DEG C of environment, to carry out air cooling after insulation 2.0h, then enter trip temperature
For 1050 ± 10 DEG C, air cooling is carried out after insulation 4.0h, sample is then placed on temperature for 800 ± 10 DEG C, it is empty after insulation 16.0h
It is cold；
(3) high-temperature behavior is detected, it is 850 DEG C of environment that the sample after being heat-treated in step (2) is placed on into temperature, detects its tension
Intensity Rm >=640Mpa, elongation A >=6.0%, contraction percentage of area Z >=9.0%；Temperature is 850 DEG C, stress is 265Mpa, its
The stress rupture time >=50h.
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Address after: 621700 West Section of Baolun Road, Henan Industrial Park, Jiangyou City, Mianyang City, Sichuan Province Applicant after: Sichuan Liuhe Special Metal Materials Co., Ltd. Address before: 621700 West Section of Baolun Road, Henan Industrial Park, Jiangyou City, Mianyang City, Sichuan Province Applicant before: Sichuan Liuhe Forging Company Ltd. |
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Application publication date: 20170929 |