CN110230004A - One kind austenitic heat-resistance steel containing aluminium and preparation method thereof - Google Patents
One kind austenitic heat-resistance steel containing aluminium and preparation method thereof Download PDFInfo
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- CN110230004A CN110230004A CN201910522036.9A CN201910522036A CN110230004A CN 110230004 A CN110230004 A CN 110230004A CN 201910522036 A CN201910522036 A CN 201910522036A CN 110230004 A CN110230004 A CN 110230004A
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- aluminium
- austenitic heat
- resistance steel
- containing aluminium
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 92
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 239000004411 aluminium Substances 0.000 title claims abstract description 86
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 79
- 239000010959 steel Substances 0.000 title claims abstract description 79
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 39
- 239000000203 mixture Substances 0.000 claims abstract description 39
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 30
- 238000005275 alloying Methods 0.000 claims abstract description 29
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 29
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 17
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 16
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 15
- 230000006698 induction Effects 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims abstract description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 41
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 239000011572 manganese Substances 0.000 claims description 15
- 239000010955 niobium Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 12
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 12
- 239000010962 carbon steel Substances 0.000 claims description 12
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 229910000592 Ferroniobium Inorganic materials 0.000 claims description 7
- ZFGFKQDDQUAJQP-UHFFFAOYSA-N iron niobium Chemical compound [Fe].[Fe].[Nb] ZFGFKQDDQUAJQP-UHFFFAOYSA-N 0.000 claims description 7
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 2
- -1 aluminium Gold Chemical compound 0.000 claims 3
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 229910001566 austenite Inorganic materials 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000000956 alloy Substances 0.000 description 4
- 206010020843 Hyperthermia Diseases 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 230000036031 hyperthermia Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 230000003026 anti-oxygenic effect Effects 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000004584 weight gain Effects 0.000 description 2
- 235000019786 weight gain Nutrition 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 229910000952 Be alloy Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
Abstract
The invention discloses a kind of austenitic heat-resistance steels containing aluminium and preparation method thereof.It is indicated with weight percentage, the alloying element group of the austenitic heat-resistance steel containing aluminium becomes Al 1.0~5.0%, C 0.3~0.5%, Cr 13.0~23.0%, Ni 18.0~22.0%, Si 0.5~2.0%, Mn 0.5~2.0%, Nb 0~2.0%, surplus Fe.Raw material is put into medium-frequency induction furnace first and is melted, each chemical component composition meets the content requirement of each component in alloying element composition in gained aluminium alloy after fusing, and temperature reaches 1620~1680 DEG C；Gained aluminium alloy, which is poured out, to be poured, and product austenitic heat-resistance steel containing aluminium is obtained after casting.While the present invention introduces Al element in austenitic heat-resistance steel, the content of Cr element is reduced, is not only advantageous to improve the high-temperature oxidation resistance of heat resisting steel, and can simultaneously reduce the cost of heat resisting steel.
Description
One, technical field:
The invention belongs to technical field of metal material, and in particular to a kind of high-temperature oxidation resistant austenitic heat-resistance steel containing aluminium and its
Preparation method, this contains the component that aluminium austenitic heat-resistance steel is suitable for being used for a long time under high temperature even corrosive environment operating condition, such as coal dust
The components such as burner nozzle, grate-cooler grate plate and hyperthermia radiation pipe.
Two, background technique:
Currently, the center of grate-cooler grate plate in the coal burner nozzle in thermal power plant, cement industry, aluminium oxide calcining
Cylinder, the hyperthermia radiation pipe in Industrial Stoves, components such as ethylene cracking tube etc. work under the high temperature conditions for a long time in chemical engineering industry
Component usually select chromium-nickel austenite heat resisting steel, such as ZG40Cr25Ni20 (HK40) heat resisting steel.Chromium-nickel austenite heat resisting steel master
It will be by generating Cr in alloy surface2O3Protective film plays antioxidant effect, but in high temperature oxidative atmosphere especially high temperature corrosion gas
Under atmosphere, Cr2O3It is readily converted into volatile materials and destroys protective film, alloy antioxygenic property is greatly reduced；In addition, the steel
Kind mainly by generating a large amount of richness Cr carbide M in the alloy23C6Preferable elevated temperature strength and high-temperature wear behavior are obtained, but
Be alloy under the high temperature conditions long service when, M23C6Can gradually be grown up roughening, to make its mechanical property with using the time
Extend and declines rapidly, the M of larger size23C6It is barren also to will cause interface Cr element, drops low-alloyed antioxygenic property.
2007, Yamamoto et al. was reported with Al2O3For anti oxidation layer novel austenite stainless steel (phosphorus content <
0.1wt%), Cr is formed on surface2O3Traditional stainless steel of film is compared, alloy tool while not reducing creep-resistant property
Have higher using temperature and better resistance to environmental attack ability (Science, 2007,316:433-436).But this kind of steel makes
It is relatively low with temperature, usually at 900 DEG C or less.In recent years, with Al2O3For anti oxidation layer steel extend to phosphorus content it is higher (>
In heat resisting steel 0.3wt%) (Oxidation Metals, 2017,87:1-10；Journal of Iron and Steel
Research, 2012,19:62-66), temperature is used to improve it.But these heat resisting steel amounts containing Cr it is universal it is higher (>
24wt%).Al and Cr is ferrite former, and when Cr too high levels, addition Al element can make to go out in austenitic heat-resistance steel
Existing more ferrite, is unfavorable in applied at elevated temperature；Content by increasing nickel element can eliminate ferrite, but can obviously increase
Add the cost of heat resisting steel.In addition, the preparation method of the heat resisting steel containing aluminium also has a major impact cost.
Therefore, exploitation has the low cost austenitic heat-resistance steel containing aluminium and preparation method thereof of excellent antioxidant performance, to mentioning
It increases the temperature even service life of corrosive environment workpiece, reduction production cost and all has important meaning.
Three, summary of the invention:
The technical problem to be solved by the present invention is according to current austenitic heat-resistance steel the deficiencies in the prior art it
Place, the present invention provide a kind of low cost austenitic heat-resistance steel containing aluminium and preparation method thereof with good high-temperature oxidation resistance.
To solve the above-mentioned problems, the technical solution adopted by the present invention is that:
The present invention provides a kind of austenitic heat-resistance steel containing aluminium, is indicated with weight percentage, the austenite heat-resistance containing aluminium
The alloying element of steel forms are as follows: and Al 1.0~5.0%, C 0.3~0.5%, Cr 13.0~23.0%, Ni 18.0~
22.0%, Si 0.5~2.0%, Mn 0.5~2.0%, Nb 0~2.0%, surplus Fe.
According to above-mentioned austenitic heat-resistance steel containing aluminium, the alloying element of the austenitic heat-resistance steel containing aluminium is formed are as follows: Al
2.0~4.0%, C 0.3~0.5%, Cr 13.0~23.0%, Ni 18.0~22.0%, Si 0.5~2.0%, Mn 0.5
~2.0%, Nb 0~2.0%, surplus Fe.
According to above-mentioned austenitic heat-resistance steel containing aluminium, the alloying element of the austenitic heat-resistance steel containing aluminium is formed are as follows: Al
1.0~5.0%, C 0.3~0.5%, Cr 16.0~20.0%, Ni 18.0~22.0%, Si 0.5~2.0%, Mn 0.5
~2.0%, Nb 0~2.0%, surplus Fe.
According to above-mentioned austenitic heat-resistance steel containing aluminium, the alloying element of the austenitic heat-resistance steel containing aluminium is formed are as follows: Al
2.0~4.0%, C 0.3~0.5%, Cr 16.0~20.0%, Ni 18.0~22.0%, Si 0.5~2.0%, Mn 0.5
~2.0%, Nb 0~2.0%, surplus Fe.
Additionally, it is provided a kind of preparation method of austenitic heat-resistance steel containing aluminium, the preparation method comprises the following steps:
A, give up carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon and pure nickel of raw material is put into medium-frequency induction furnace first
In melted, each chemical component composition meets the alloying element of the above-mentioned austenitic heat-resistance steel containing aluminium in gained aluminium alloy after fusing
The content requirement of other each components in composition in addition to aluminium, niobium, temperature reach 1620~1680 DEG C；
Alternatively, give up carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon, pure nickel and ferro-niobium of raw material is put into intermediate frequency first
It is melted in electric induction furnace, each chemical component composition meets the above-mentioned austenitic heat-resistance steel containing aluminium in gained aluminium alloy after fusing
The content requirement of other each components in alloying element composition in addition to aluminum, temperature reach 1620~1680 DEG C；
B, fine aluminium is added step a and melted in resulting aluminium alloy using ladle bottom pouring process and sufficiently reacted, after addition
Its aluminium content is set to meet the content requirement of aluminium described in the alloying element composition of the above-mentioned austenitic heat-resistance steel containing aluminium；
C, aluminium alloy obtained by step b is poured out and is poured, pouring temperature is 1500~1580 DEG C, and product is obtained after casting
Austenitic heat-resistance steel containing aluminium.
According to the preparation method of the above-mentioned austenitic heat-resistance steel containing aluminium, fine aluminium described in step b be bulk, specification be 5~
20mm。
Product of the present invention austenitic heat-resistance steel containing aluminium is primarily adapted for use in coal burner nozzle, the water in production thermal power plant
Grate-cooler grate plate in bricklayer's's industry, the central tube of aluminium oxide calcining, the resistance to heated work pieces of heat-treatment furnace, the hyperthermia radiation in Industrial Stoves
Ethylene cracking tube, magnesium smelting reducing reactor etc. work under the conditions of high temperature even corrosive environment for a long time in pipe, chemical engineering industry
Component.
Positive beneficial effect of the invention:
1, while technical solution of the present invention introduces Al element in austenitic heat-resistance steel, the content of Cr element is reduced, no
But is conducive to improve the high-temperature oxidation resistance of heat resisting steel, and can simultaneously reduce the cost of heat resisting steel.
2, technical solution of the present invention is in the preparation method of the austenitic heat-resistance steel containing aluminium, using relatively inexpensive useless carbon steel,
Low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon, pure nickel and fine aluminium make raw material, add aluminium element, operation letter using ladle bottom pouring process
Just, production cost is low for folk prescription.
3, technical solution of the present invention can add suitable ferro-niobium according to actual condition needs, resistance to improve austenite containing aluminium
The high-temperature creep resistance of hot steel.
Four, Detailed description of the invention:
The XRD spectrum of heat resisting steel in Fig. 1 embodiment of the present invention 5 and comparative example；
The oxidizing dynamics curve of heat resisting steel in Fig. 2 embodiment of the present invention 5 and comparative example.
In Fig. 1: embodiment 5 and the matrix of the comparative example without Al containing Al 3.5% are austenite.
In Fig. 2: under the conditions of 1100 DEG C, the oxidation weight gain of embodiment 5 is substantially reduced in comparative example；Embodiment 5 passes through
Oxidation weight gain after 480h oxidation is 54.27g/m2, it is only the 5.2% of comparative example.
Five, specific embodiment:
The present invention is further explained with reference to embodiments, but is not intended to limit the range of technical solution of the present invention protection.
Comparative example:
A kind of austenitic heat-resistance steel, is indicated with weight percentage, alloying element composition are as follows: C 0.4%, Cr 18.0%,
Ni 20.0%, Si 1.0%, Mn 1.0%, Nb 0.7%, surplus Fe.
Comparative example austenitic heat-resistance steel the preparation method comprises the following steps:
Useless carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon, pure nickel and ferro-niobium are put into medium-frequency induction furnace and carried out
Fusing, after the chemical composition content of aluminium alloy is met the requirements after fusing, adjust temperature to 1650 DEG C, then by aluminium alloy pour out into
Row casting, pouring temperature are 1530 DEG C, and the austenitic heat-resistance steel of comparative example is obtained after casting.
Embodiment 1:
The present embodiment austenitic heat-resistance steel containing aluminium, is indicated with weight percentage, alloying element composition are as follows: Al1.0%, C
0.4%, Cr 23.0%, Ni 20.0%, Si 1.0%, Mn 1.0%, surplus Fe.
The detailed step of the preparation method of the present embodiment austenitic heat-resistance steel containing aluminium is as follows:
A, give up carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon and pure nickel of raw material is put into medium-frequency induction furnace first
In melted, each chemical component composition meets in the present embodiment alloying element composition in addition to aluminum in gained aluminium alloy after fusing
Other each components content requirement, temperature reaches 1650 DEG C；
B, blocky fine aluminium (about 5mm) is added in the resulting aluminium alloy of step a fusing using ladle bottom pouring process and is carried out sufficiently
Reaction makes its aluminium content meet the content requirement of aluminium described in the present embodiment alloying element composition after addition；
C, then aluminium alloy obtained by step b is poured out and is poured, pouring temperature is 1530 DEG C, and product is obtained after casting and is contained
Aluminium austenitic heat-resistance steel.
Embodiment 2:
The present embodiment austenitic heat-resistance steel containing aluminium, is indicated with weight percentage, alloying element composition are as follows: Al 3.5%, C
0.4%, Cr 18.0%, Ni 20.0%, Si 1.0%, Mn 1.0%, surplus Fe.
The detailed step of the preparation method of the present embodiment austenitic heat-resistance steel containing aluminium is as follows:
A, give up carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon and pure nickel of raw material is put into medium-frequency induction furnace first
In melted, each chemical component composition meets in the present embodiment alloying element composition in addition to aluminum in gained aluminium alloy after fusing
Other each components content requirement, temperature reaches 1650 DEG C；
B, blocky fine aluminium (about 10mm) is added in the resulting aluminium alloy of step a fusing using ladle bottom pouring process and is carried out sufficiently
Reaction makes its aluminium content meet the content requirement of aluminium described in the present embodiment alloying element composition after addition；
C, then aluminium alloy obtained by step b is poured out and is poured, pouring temperature is 1530 DEG C, and product is obtained after casting and is contained
Aluminium austenitic heat-resistance steel.
Embodiment 3:
The present embodiment austenitic heat-resistance steel containing aluminium, is indicated with weight percentage, alloying element composition are as follows: Al 5.0%, C
0.4%, Cr 13.0%, Ni 22.0%, Si 1.0%, Mn 1.0%, surplus Fe.
The detailed step of the preparation method of the present embodiment austenitic heat-resistance steel containing aluminium is as follows:
A, give up carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon and pure nickel of raw material is put into medium-frequency induction furnace first
In melted, each chemical component composition meets in the present embodiment alloying element composition in addition to aluminum in gained aluminium alloy after fusing
Other each components content requirement, temperature reaches 1650 DEG C；
B, blocky fine aluminium (about 20mm) is added in the resulting aluminium alloy of step a fusing using ladle bottom pouring process and is carried out sufficiently
Reaction makes its aluminium content meet the content requirement of aluminium described in the present embodiment alloying element composition after addition；
C, then aluminium alloy obtained by step b is poured out and is poured, pouring temperature is 1530 DEG C, and product is obtained after casting and is contained
Aluminium austenitic heat-resistance steel.
Embodiment 4:
The present embodiment austenitic heat-resistance steel containing aluminium, is indicated with weight percentage, alloying element composition are as follows: Al 1.5%, C
0.4%, Cr 18.0%, Ni 20.0%, Si 1.0%, Mn 1.0%, Nb 0.7%, surplus Fe.
The detailed step of the preparation method of the present embodiment austenitic heat-resistance steel containing aluminium is as follows:
A, give up carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon, pure nickel and ferro-niobium of raw material is put into Medium frequency induction first
It is melted in electric furnace, each chemical component composition meets in the present embodiment alloying element composition except aluminium in gained aluminium alloy after fusing
Except other each components content requirement, temperature reaches 1650 DEG C；
B, blocky fine aluminium (about 10mm) is added in the resulting aluminium alloy of step a fusing using ladle bottom pouring process and is carried out sufficiently
Reaction makes its aluminium content meet the content requirement of aluminium described in the present embodiment alloying element composition after addition；
C, then aluminium alloy obtained by step b is poured out and is poured, pouring temperature is 1530 DEG C, and product is obtained after casting and is contained
Aluminium austenitic heat-resistance steel.
Embodiment 5:
The present embodiment austenitic heat-resistance steel containing aluminium, is indicated with weight percentage, alloying element composition are as follows: Al 3.5%, C
0.4%, Cr 18.0%, Ni 20.0%, Si 1.0%, Mn 1.0%, Nb 0.7%, surplus Fe.
The detailed step of the preparation method of the present embodiment austenitic heat-resistance steel containing aluminium is as follows:
A, give up carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon, pure nickel and ferro-niobium of raw material is put into Medium frequency induction first
It is melted in electric furnace, each chemical component composition meets in the present embodiment alloying element composition except aluminium in gained aluminium alloy after fusing
Except other each components content requirement, temperature reaches 1650 DEG C；
B, blocky fine aluminium (about 10mm) is added in the resulting aluminium alloy of step a fusing using ladle bottom pouring process and is carried out sufficiently
Reaction makes its aluminium content meet the content requirement of aluminium described in the present embodiment alloying element composition after addition；
C, then aluminium alloy obtained by step b is poured out and is poured, pouring temperature is 1530 DEG C, and product is obtained after casting and is contained
Aluminium austenitic heat-resistance steel.
Embodiment 6:
The present embodiment austenitic heat-resistance steel containing aluminium, is indicated with weight percentage, alloying element composition are as follows: Al 4.5%, C
0.4%, Cr 13.0%, Ni 22.0%, Si 1.0%, Mn 1.0%, Nb 1.5%, surplus Fe.
The detailed step of the preparation method of the present embodiment austenitic heat-resistance steel containing aluminium is as follows:
A, give up carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon, pure nickel and ferro-niobium of raw material is put into Medium frequency induction first
It is melted in electric furnace, each chemical component composition meets in the present embodiment alloying element composition except aluminium in gained aluminium alloy after fusing
Except other each components content requirement, temperature reaches 1650 DEG C；
B, blocky fine aluminium (about 20mm) is added in the resulting aluminium alloy of step a fusing using ladle bottom pouring process and is carried out sufficiently
Reaction makes its aluminium content meet the content requirement of aluminium described in the present embodiment alloying element composition after addition；
C, then aluminium alloy obtained by step b is poured out and is poured, pouring temperature is 1530 DEG C, and product is obtained after casting and is contained
Aluminium austenitic heat-resistance steel.
Claims (6)
1. a kind of austenitic heat-resistance steel containing aluminium, which is characterized in that indicated with weight percentage, the austenitic heat-resistance steel containing aluminium
Alloying element composition are as follows: Al 1.0~5.0%, C 0.3~0.5%, Cr 13.0~23.0%, Ni 18.0~22.0%,
Si 0.5~2.0%, Mn 0.5~2.0%, Nb 0~2.0%, surplus Fe.
2. austenitic heat-resistance steel containing aluminium according to claim 1, which is characterized in that the conjunction of the austenitic heat-resistance steel containing aluminium
Gold element composition are as follows: Al 2.0~4.0%, C 0.3~0.5%, Cr 13.0~23.0%, Ni 18.0~22.0%, Si
0.5~2.0%, Mn 0.5~2.0%, Nb 0~2.0%, surplus Fe.
3. austenitic heat-resistance steel containing aluminium according to claim 1, which is characterized in that the conjunction of the austenitic heat-resistance steel containing aluminium
Gold element composition are as follows: Al 1.0~5.0%, C 0.3~0.5%, Cr 16.0~20.0%, Ni 18.0~22.0%, Si
0.5~2.0%, Mn 0.5~2.0%, Nb 0~2.0%, surplus Fe.
4. austenitic heat-resistance steel containing aluminium according to claim 1, which is characterized in that the conjunction of the austenitic heat-resistance steel containing aluminium
Gold element composition are as follows: Al 2.0~4.0%, C 0.3~0.5%, Cr 16.0~20.0%, Ni 18.0~22.0%, Si
0.5~2.0%, Mn 0.5~2.0%, Nb 0~2.0%, surplus Fe.
5. a kind of preparation method of austenitic heat-resistance steel containing aluminium, which is characterized in that the preparation method comprises the following steps:
A, first by raw material give up carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon and pure nickel be put into medium-frequency induction furnace into
Row fusing, after fusing in gained aluminium alloy each chemical component composition meet it is other each in addition to aluminium, niobium in the claim 1
The content requirement of component, temperature reach 1620~1680 DEG C；
Alternatively, give up carbon steel, low-carbon ferrochromium, high carbon ferro-chrome, manganese iron, ferrosilicon, pure nickel and ferro-niobium of raw material is put into Medium frequency induction first
It is melted in electric furnace, each chemical component composition meets in the claim 1 in addition to aluminum in gained aluminium alloy after fusing
The content requirement of other each components, temperature reach 1620~1680 DEG C；
B, fine aluminium is added step a and melted in resulting aluminium alloy using ladle bottom pouring process and sufficiently reacted, make it after addition
Aluminium content meets the content requirement of aluminium described in claim 1；
C, aluminium alloy obtained by step b is poured out and is poured, pouring temperature is 1500~1580 DEG C, and product is obtained after casting containing aluminium
Austenitic heat-resistance steel.
6. the preparation method of the austenitic heat-resistance steel according to claim 5 containing aluminium, it is characterised in that: pure described in step b
Aluminium is bulk, and specification is 5~20mm.
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| CN115074626A (en) * | 2022-06-24 | 2022-09-20 | 青岛新力通工业有限责任公司 | Alloy and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110952032A (en) * | 2019-10-30 | 2020-04-03 | 武汉科技大学 | Low-cost aluminum-containing heat-resistant steel and preparation method thereof |
| CN110952032B (en) * | 2019-10-30 | 2021-01-15 | 武汉科技大学 | Low-cost aluminum-containing heat-resistant steel and preparation method thereof |
| CN112301283A (en) * | 2020-10-30 | 2021-02-02 | 上海材料研究所 | Precipitation hardening austenitic alloy steel with high expansibility and thermal stability and method for manufacturing same |
| CN114318169A (en) * | 2021-11-16 | 2022-04-12 | 上海交通大学 | Aluminum-containing austenitic stainless steel resistant to supercritical water/supercritical carbon dioxide corrosion |
| CN115011879A (en) * | 2022-06-23 | 2022-09-06 | 西北工业大学 | Austenitic heat-resistant steel and heat treatment method thereof |
| CN115011879B (en) * | 2022-06-23 | 2024-02-06 | 西北工业大学 | Austenitic heat-resistant steel and heat treatment method thereof |
| CN115074626A (en) * | 2022-06-24 | 2022-09-20 | 青岛新力通工业有限责任公司 | Alloy and preparation method thereof |
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