CN118103540A - Austenitic alloys, blanks, and components and methods - Google Patents
Austenitic alloys, blanks, and components and methods Download PDFInfo
- Publication number
- CN118103540A CN118103540A CN202280068677.1A CN202280068677A CN118103540A CN 118103540 A CN118103540 A CN 118103540A CN 202280068677 A CN202280068677 A CN 202280068677A CN 118103540 A CN118103540 A CN 118103540A
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- CN
- China
- Prior art keywords
- alloy
- temperature
- tempering
- melt
- solid
- Prior art date
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 22
- 239000000956 alloy Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 13
- -1 blanks Substances 0.000 title description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052796 boron Inorganic materials 0.000 claims abstract 2
- 238000005496 tempering Methods 0.000 claims description 16
- 238000000137 annealing Methods 0.000 claims description 7
- 239000010955 niobium Substances 0.000 claims 2
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 229910052758 niobium Inorganic materials 0.000 claims 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 14
- 239000011651 chromium Substances 0.000 abstract description 9
- 229910052759 nickel Inorganic materials 0.000 abstract description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052804 chromium Inorganic materials 0.000 abstract description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011733 molybdenum Substances 0.000 abstract description 4
- 239000011572 manganese Substances 0.000 abstract 2
- 239000010936 titanium Substances 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- 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
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/02—Hardening by precipitation
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- 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
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/004—Dispersions; Precipitations
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to an alloy having at least the following (in wt.%) properties: 0.03% -0.08% of carbon (C), 0.2% -0.4% of silicon (Si), 1.6% -2.0% of manganese (Mn), 4.0% -5.0% of molybdenum (Mo), 20.0% -25.0% of chromium (Cr), 24.0% -27.0% of nickel (Ni), 0.25% -0.35% of vanadium (V), 2.0% -2.3% of titanium (Ti), 0.4% -0.6% of aluminum (Al), 0.004% -0.006% of boron (B) and iron (Fe).
Description
Technical Field
The present invention relates to an austenitic alloy, a blank and/or component made of said alloy and a method of manufacturing.
Background
Depending on the application conditions, rotor forging disks have hitherto been produced from different forged steels.
Thus, niCrMoV is used for compressor disks or CrMoWVNbN is used for turbine disks.
The application conditions and design requirements are decisive for the choice of forging material.
For the selection of forging materials, it is always necessary to ensure a balance of strength and toughness in order to comply with design requirements.
Currently, the iron-based material with the highest use temperature is martensitic.
For higher use temperatures, no solution currently exists.
There are considerations for the use of nickel-based discs.
With the aid of the nickel-based disc, a service temperature of greater than 923K should theoretically be possible.
However, the member composed of nickel (Ni) has the following drawbacks, and thus the use is discussed:
Very high costs compared to discs made of steel,
Longer processing times in production.
Disclosure of Invention
Accordingly, an object of the present invention is to solve the above-mentioned problems.
The object is achieved by an alloy according to claim 1, a component or blank according to claim 6 and a method according to claim 7.
Further advantageous measures are listed in the dependent claims, which can be combined with one another at will in order to achieve further advantages.
The description only shows embodiments of the invention.
Verification of austenitic steels has led to applicability to higher application temperatures in principle.
In principle, the chemistry and heat treatment are sufficient to withstand the challenges of using the forged component for energy generating facilities at temperatures greater than 873K.
The iron-based composition has the following terms (in wt.%) here:
iron (Fe), especially the balance iron (Fe),
Optionally, a
In particular, the alloy is composed of said elements.
The following compositions should be used constructively preferably:
Particular embodiments are:
preferably, a PREN value of greater than 32 (DIN 81249-2) should be followed:
PREN＝％Cr+3.3*％Mo。
the background is as follows:
a) Corrosion resistance
By increasing the chromium content from 14% to more than 20% by weight, the resistance to HTK2 is increased.
The background is to constitute a stable chromium (Cr) 2O3 layer with a sufficiently high Cr reserve.
Meanwhile, by increasing molybdenum (Mo), corrosion resistance to chlorine-containing media under high temperature corrosion conditions is increased.
The action of molybdenum (Mo) and chromium (Cr) is not only fixed in this context in the high temperature range, but will also lead to an improved corrosion protection for marine applications.
B) Notch embrittlement
By increasing the chromium and molybdenum content, an increase in strength is caused. In one aspect, the lifting is desirable. On the other hand, it is necessary to exert the influence by selecting the tempering conditions such that the risk of embrittlement of the notch is low/there is sufficient toughness.
In this context, the optimal Quality Heat Treatment (QHT) should preferably be determined by tempering tests. Preferably, a QHT tempering treatment of grade 2 or grade 3 is used.
The first point for this is the following minimum temperature.
In particular, "> =" temperature lies in the values indicated, for example "> = 1013K" in particular "= 1013K".
The solid-melt annealing temperature is preferably always the highest temperature.
Thus, the temperature of the 1 st tempering is in particular at least 100K or at least 200K lower than the solid-melt annealing temperature.
The subsequent temperature for the subsequent 2 nd or 3 rd tempering is again at least 20K lower, in particular compared to the solid-melt annealing temperature.
The temperature of the 3 rd tempering is lower than or equal to the temperature of the 2 nd tempering.
Advantages other than being used mainly as a forged component in an energy generating apparatus:
The range of use of the "inexpensive" iron-based alloy is expanded compared to "expensive nickel-based materials". Faster workability of the iron-based rotor member compared to nickel-based materials,
Experience in the construction, production and manufacture of high alloy iron-based alloys can be largely exploited. This is especially helpful for all probabilistic schemes,
The application temperature can be increased to achieve efficiency and performance improvements of the machine without external cooling.
Examples of iron-based (Fe) materials are:
Claims (15)
1. An alloy is provided, which is made of a metal,
The alloy has at least the following (in wt.%) and is composed in particular of:
iron (Fe), especially the balance iron (Fe),
Optionally, a
2. An alloy according to claim 1,
The alloy has one, especially two, more especially all elements selected from boron (B), tungsten (W) and niobium (Nb).
3. The alloy according to either or both of claim 1 or 2,
The alloy has 0.4% to 0.6% aluminum (Al).
4. The alloy according to either or both of claim 1 or 2,
The alloy has up to 0.06% aluminum (Al),
In particular with up to 0.01% of aluminium (Al),
More particularly 0.004% -0.006% aluminum (Al).
5. The alloy according to any one or more of claim 1, 2, 3 or 4,
The alloy has the following values: % Cr+3.3wt% Mo is not less than 32.
6. A blank or a component of a blank or component,
The blank or member having an alloy according to any one or more of claims 1,2, 3, 4 or 5.
7. A method for heat treating an alloy, blank or component according to any one or more of claims 1,2, 3, 4 or 5 or 6, by means of a solid-melt anneal, in particular a solid-melt anneal, and at least two tempers, in particular only two tempers.
8. The method according to claim 7,
Wherein the melt-fixing annealing is carried out in at least 1243K, in particular in 1243K.
9. The method according to claim 7 or 8,
Wherein the first tempering is carried out at a temperature at least 100K below the solid-melt annealing, in particular at least 1013K, more in particular 1013K.
10. The method according to claim 7 or 8,
Wherein the first tempering is carried out at a temperature at least 100K below the solid-melt annealing, in particular at least 973K, more in particular 973K.
11. The method according to any one or more of claim 7, 8, 9 or 10,
Wherein the second tempering temperature is at least 20K lower than the first tempering temperature.
12. The method according to any one or more of claim 7, 8, 9, 10 or 11,
Wherein the second tempering temperature is at least 923K, in particular 923K.
13. The method according to any one or more of claim 7, 8, 9, 10, 11 or 12,
Wherein the third tempering temperature is not higher than the second tempering temperature.
14. The method according to any one or more of claim 7, 8, 9, 10, 11, 12 or 13,
Wherein the third tempering temperature is at least 923K, in particular 923K.
15. The method of any one or more of claim 7, 8, 9, 10, 11, 12, 13 or 14,
The method is carried out by means of solution annealing and only three tempering.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021211652.3 | 2021-10-15 | ||
| DE102021211652.3A DE102021211652A1 (en) | 2021-10-15 | 2021-10-15 | Austenitic alloy, blank and part and process |
| PCT/EP2022/075062 WO2023061673A1 (en) | 2021-10-15 | 2022-09-09 | Austenite alloy, blank and component, and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118103540A true CN118103540A (en) | 2024-05-28 |
Family
ID=83691088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280068677.1A Pending CN118103540A (en) | 2021-10-15 | 2022-09-09 | Austenitic alloys, blanks, and components and methods |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4377487A1 (en) |
| CN (1) | CN118103540A (en) |
| DE (1) | DE102021211652A1 (en) |
| WO (1) | WO2023061673A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3018537A1 (en) | 1979-05-17 | 1980-11-27 | Daido Steel Co Ltd | CONTROLLED INCLUDING AUTOMATIC STEEL AND METHOD FOR THE PRODUCTION THEREOF |
| DD220845A1 (en) | 1984-01-26 | 1985-04-10 | Mai Edelstahl | METHOD FOR DELAYING THE AGING EXPERIENCE OF NICKEL ALLOYS AND THEIR USE |
| US20060275168A1 (en) * | 2005-06-03 | 2006-12-07 | Ati Properties, Inc. | Austenitic stainless steel |
| EP1975270A1 (en) | 2007-03-31 | 2008-10-01 | Daido Tokushuko Kabushiki Kaisha | Austenitic free cutting stainless steel |
| JP4702900B2 (en) * | 2008-04-18 | 2011-06-15 | 株式会社日立メタルプレシジョン | Fe-base alloy clip and manufacturing method thereof |
| PL227405B1 (en) | 2012-12-19 | 2017-11-30 | SYSTEM Spółka Akcyjna | Method for laser deposition of a metal layer on a metal element |
| PL222831B1 (en) | 2012-12-31 | 2016-09-30 | Plasma System Spółka Akcyjna | Method for regenerating and increase the durability of the metallurgical cylinder |
| US11198930B2 (en) * | 2014-09-19 | 2021-12-14 | Nippon Steel Corporation | Austenitic stainless steel plate |
| WO2017002523A1 (en) * | 2015-07-01 | 2017-01-05 | 新日鐵住金株式会社 | Austenitic heat-resistant alloy and welded structure |
-
2021
- 2021-10-15 DE DE102021211652.3A patent/DE102021211652A1/en active Pending
-
2022
- 2022-09-09 CN CN202280068677.1A patent/CN118103540A/en active Pending
- 2022-09-09 WO PCT/EP2022/075062 patent/WO2023061673A1/en unknown
- 2022-09-09 EP EP22789472.2A patent/EP4377487A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021211652A8 (en) | 2023-06-15 |
| DE102021211652A1 (en) | 2023-04-20 |
| EP4377487A1 (en) | 2024-06-05 |
| DE102021211652A9 (en) | 2023-07-27 |
| WO2023061673A1 (en) | 2023-04-20 |
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