EP3899064A1 - Superaustenitischer werkstoff - Google Patents
Superaustenitischer werkstoffInfo
- Publication number
- EP3899064A1 EP3899064A1 EP19829564.4A EP19829564A EP3899064A1 EP 3899064 A1 EP3899064 A1 EP 3899064A1 EP 19829564 A EP19829564 A EP 19829564A EP 3899064 A1 EP3899064 A1 EP 3899064A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- material according
- nitrogen
- detection limit
- manganese
- molybdenum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 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
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- 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
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- 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
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
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- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
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- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
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- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
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- 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
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
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- 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
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
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- 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
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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- 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
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
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- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- 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
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- 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- 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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- 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
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- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- 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
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- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
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- 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
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- 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
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- 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
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
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- 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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Definitions
- the invention relates to a super-austenitic material and a method for its manufacture.
- Such materials are used for. B. used in chemical plant construction, under maritime conditions or in oil field or gas field technology.
- a requirement for such materials is that they withstand a corrosive attack, in particular an attack in media with high chloride concentrations or sulfuric acid conditions.
- Such materials are e.g. known from CN 107876562 A, CN 104195446 A or DE 43 42 188.
- EP 1 069 202 A1 discloses a paramagnetic, corrosion-resistant, austenitic steel with a high yield strength, strength and toughness, which is said to be corrosion-resistant, particularly in media with a high chloride concentration, this steel being 0.6% by weight to 1.4% by weight .-% nitrogen should contain, with 17 to 24 wt .-% chromium, manganese and nitrogen are included.
- WO 02/02837 Al discloses a corrosion-resistant material for use in media with a high chloride concentration in oil field technology. This is a chromium nickel molybdenum super austenite, which is formed with comparatively low nitrogen contents, but with very high chromium and very high nickel contents.
- chrome manganese nitrogen steels are a rather inexpensive alloy composition that nevertheless offers an excellent combination of strength, toughness and corrosion resistance.
- the chromium nickel molybdenum steels mentioned achieve significantly higher corrosion resistance than chromium manganese nitrogen steels, but are associated with considerably higher costs due to the very high nickel content.
- MARC % Cr + 3.3 x% Mo + 20 x% N + 20 x% C - 0.25 x% Ni - 0.5 x% Mn.
- Comparable steel grades are also known for use as shipbuilding steels for submarines, which are chromium-nickel manganese nitrogen steels which are also alloyed with niobium to stabilize the carbon, but this worsens the impact strength. These steels generally have less manganese and therefore have a relatively good corrosion resistance, but do not achieve the strength of pure high nitrogen alloyed CrMnN steels.
- the object of the invention is to provide a super-austenitic, high-strength and tough material that can be produced in a comparatively simple and inexpensive manner and is particularly suitable for a sulfuric acid corrosive environment.
- the material is to be used in shipbuilding and chemical plant construction or the combination of both, in particular flue gas desulfurization systems from seagoing ships. All other areas in which a particularly acidic or acid gas attack can be expected.
- the material has a completely austenitic structure even after an optional cold forming. After strain hardening, the yield strength should be R p o, 2 > 1000 MPa.
- the alloy according to the invention has in particular the following composition (all figures in% by weight):
- Phosphorus (P) ⁇ 0.05 ⁇ 0.05 ⁇ 0.05
- V Vanadium (V) ⁇ 0.5 ⁇ 0.3 below the detection limit tungsten (W) ⁇ 0.5 ⁇ 0.1 below the detection limit copper (Cu) 0.5-5.0 0.75-3.5 1.0 2.0
- Co Co
- Ti titanium
- AI detection limit aluminum
- Nb nickel
- the steel according to the invention should be free of precipitation, since precipitation is negative for toughness and corrosion resistance.
- the carbon content is particularly limited to 0.50%.
- the copper content is deliberately increased.
- Carbon can be contained in contents of up to 0.50% in a steel alloy according to the invention. Carbon is an austenite former and has a positive effect on high mechanical properties. With a view to avoiding carbide precipitates, the carbon content should be set between 0.01 and 0.25%, preferably between 0.01 and 0.10%.
- Silicon is provided in a content of up to 0.5% and serves mainly to deoxidize the steel.
- the specified upper limit certainly prevents the formation of intermetallic phases. Since silicon is also a ferrite former, the upper limit with a safety range has also been selected in this regard. In particular, silicon can be provided in a content of 0.1-0.4%.
- Manganese is contained in amounts of 0.1 - 5%. This is an extremely low value compared to prior art materials. So far it has been assumed that manganese levels of more than 19%, if possible more than 20%, are necessary for high nitrogen solubility.
- the lower limit for manganese can be selected at 0.1 or 0.5 or 1.0 or 2.0 or 2.5%.
- the upper limit for manganese can be chosen at 3.0 or 3.5 or 4.0 or 4.5 or 5.0%.
- Chromium levels of 17% or more prove to be necessary for a higher corrosion resistance. According to the invention, at least 23% and at most 33% chromium are contained. So far it has been assumed that levels higher than 23% adversely affect magnetic permeability because chromium is one of the ferrite stabilizing elements. In contrast, it was found with the alloy according to the invention that even very high chromium contents above 23% do not have a negative influence on the magnetic permeability in the present alloy, but, as is known, the resistance to pitting and stress corrosion cracking are optimally influenced.
- the lower limit for chrome can be selected at 23 or 24 or 25 or 26%.
- the upper limit for chromium can be selected at 28 or 29 or 30 or 31 or 32%.
- Molybdenum is an element that contributes significantly to corrosion resistance in general and pitting corrosion resistance in particular, whereby the effect of molybdenum is enhanced by nickel. According to the invention, 2.0 to 5.0% molybdenum is added. It has also been shown that Mo contents of> 5% and especially> 6% lead to strong segregation behavior, which increases the tendency of Sigma phase to excrete, which in turn would reduce the corrosion resistance.
- the lower limit for molybdenum can be selected at 2.0 or 2.2 or 2.3 or 2.4 or 2.5 or 3.0 or 3.2 or 3.3 or 3.4 or 3.5%.
- the upper limit for molybdenum can be chosen at 4.4 or 4.5 or 4.6 or 4.7 or 4.8 or 4.9 or 5.0%.
- tungsten is present in contents below 0.5% and contributes to increasing the corrosion resistance.
- the upper limit for tungsten can be chosen at 0.5 or 0.4 or 0.3 or 0.2 or 0.1% or below the detection limit (ie without any deliberate allowance).
- nickel is present in contents of 10 to 20%, as a result of which high stress corrosion cracking resistance is achieved in media containing chloride.
- the lower limit for nickel can be selected at 10 or 11 or 12 or 13 or 14 or 15%.
- the upper limit for nickel can be selected at 17 or 18 or 19%.
- the upper limit value for copper was selected to be ⁇ 5%, preferably ⁇ 3% or ⁇ 2.5%, in particular ⁇ 2%.
- the lower limit for copper can be selected at 0.6 or 0.7 or 0.8 or 0.9 or 1 or 1.1%.
- One area of application is specifically flue gas scrubbing, especially e.g. for seagoing ships. With these contents, on the one hand, good resistance to sulfuric acid and acid gas attack can be achieved, on the other hand, the excretion of chromium nitrides can be largely prevented by the total alloy, as mentioned above.
- Levels of up to 5% can be provided in particular for the substitution of nickel.
- the upper limit for cobalt can be selected at 5 or 3 or 1 or 0.5 or 0.4 or 0.3 or 0.2 or 0.1% or below the detection limit (i.e. without any deliberate addition).
- Nitrogen is contained from 0.40 to 0.90% in order to ensure high strength. Furthermore, nitrogen contributes to corrosion resistance and is a strong austenite former, which is why contents higher than 0.40% are favorable.
- the upper limit of nitrogen is limited to 0.90%, whereby it has been shown that, in spite of the very low manganese content, set to known alloys, these high nitrogen contents can be achieved in the alloy. Because of the good nitrogen solubility on the one hand and the disadvantages that are obtained with higher nitrogen contents, in particular above 0.90%, any pressure embroidery within a DESU route is even forbidden.
- the nitrogen to carbon ratio is greater than 15.
- the lower limit for nitrogen can be chosen at 0.40 or 0.45%.
- the upper limit for nitrogen can be selected at 0.90 or 0.80 or 0.70 or 0.65 or 0.60%.
- the method according to the invention is also inexpensive, since the complex pressure embroidery is not necessary, which in turn means that the associated remelting can also be dispensed with.
- Boron, aluminum and sulfur can also be included as further alloy components, but only optionally.
- the alloy components vanadium and titanium are not necessarily contained in the present steel alloy. Although these elements contribute positively to the solubility of nitrogen, the high level of nitrogen solubility according to the invention can also be provided in their absence.
- Niobium should not be contained in the alloy according to the invention, since it reduces the toughness and has historically only been used for setting carbon, which is not necessary for the alloy according to the invention.
- the levels of niobium are still tolerable up to 0.1%, but should not exceed the levels of inevitable impurities.
- FIG. 1 highly schematic of the Fiergna way and its alternatives
- Figure 3 a table with three different alloys within the inventive concept and the resulting actual values of the nitrogen content against the arithmetic nitrogen solubility of such an alloy according to the current teaching;
- FIG. 4 the strengths of the examples mentioned in FIG. 3 before any work hardening
- the components are melted under atmospheric conditions and then further treated by secondary metallurgy. Blocks are then cast, which are then hot formed immediately afterwards.
- ESR Electro slag remelting
- DESU pressure electroslag remelting
- the MARC formula has been optimized to the effect that it has been found that the usual nickel removal for the system according to the invention does not apply and that the limit value of 40 is necessary.
- FIG. 2 shows an example of the possible process routes for the production of the alloy composition according to the invention.
- a possible described route In the vacuum induction melting unit (VID), melted material is melted and treated by secondary metallurgy at the same time. The melt is then poured into ingot molds and solidifies there into blocks. These are then hot-formed in several steps, for example pre-forged on the long forging machine (Rotary Forging Machine) and brought to final dimensions in the multi-line rolling mill (Multiline Rolling Mill) or rolled out to sheet metal on a pair of roll stands. Depending on the requirements, a heat treatment step can be carried out.
- VID vacuum induction melting unit
- a cold forming step can be carried out.
- a superaustenitic material according to the invention can not only be produced via the described (and in particular shown in FIG. 2) production routes, the advantageous properties of the alloy according to the invention can also be achieved by a powder metallurgical production route.
- FIG. 3 shows three different variants within the alloy compositions according to the invention, with the nitrogen values measured in each case which have resulted in the procedure according to the invention in connection with the alloys according to the invention.
- This very high nitrogen content is in contradiction to the nitrogen solubility according to Stein, Satir, Kowandar and Medovar given in the right columns from “On restricting aspects in the production of non-magnetic Cr-Mn-N-alloy steels, Sailer, 2005.” Different temperatures are given for Medovar, but it can be seen that the high nitrogen values far exceed the theoretically expected.
- an austenitic, high-strength material with increased corrosion resistance and low nickel content is created, which at the same time shows high strength and paramagnetic behavior. Even after cold forming, there is a completely austenitic structure, so that it was possible to combine the positive properties of an inexpensive CrMnN steel with the excellent corrosion properties of a CrNiMo steel.
- a special feature of the invention is that, due to the high nitrogen content, the strain hardening rate is higher than that of other super austenites in order to be able to achieve tensile strengths (R m of 2000 MPa). This makes it possible as a final manufacturing step by cold rolling or other cold forming processes with high forming rates to achieve a high work hardening.
- Typical areas of application of the materials according to the invention are shipbuilding and chemical plant construction or the combination of both, in particular flue gas / sulfur plants of seagoing ships, but also all other areas in which an attack, in particular sulfuric acid, is to be expected.
- the strength can be further increased by cold forming as already described.
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- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Heat Treatment Of Steel (AREA)
- Conductive Materials (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
- Soft Magnetic Materials (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018133255.6A DE102018133255A1 (de) | 2018-12-20 | 2018-12-20 | Superaustenitischer Werkstoff |
| PCT/EP2019/086385 WO2020127789A1 (de) | 2018-12-20 | 2019-12-19 | Superaustenitischer werkstoff |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3899064A1 true EP3899064A1 (de) | 2021-10-27 |
| EP3899064C0 EP3899064C0 (de) | 2023-08-30 |
| EP3899064B1 EP3899064B1 (de) | 2023-08-30 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19829563.6A Active EP3899063B1 (de) | 2018-12-20 | 2019-12-19 | Superaustenitischer werkstoff |
| EP19829564.4A Active EP3899064B1 (de) | 2018-12-20 | 2019-12-19 | Superaustenitischer werkstoff |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
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| EP19829563.6A Active EP3899063B1 (de) | 2018-12-20 | 2019-12-19 | Superaustenitischer werkstoff |
Country Status (10)
| Country | Link |
|---|---|
| US (2) | US12410496B2 (de) |
| EP (2) | EP3899063B1 (de) |
| JP (2) | JP2022514920A (de) |
| CN (2) | CN113544295A (de) |
| CA (2) | CA3122044A1 (de) |
| DE (1) | DE102018133255A1 (de) |
| EA (2) | EA202191413A1 (de) |
| ES (2) | ES2956332T3 (de) |
| PL (2) | PL3899063T3 (de) |
| WO (2) | WO2020127788A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115261718A (zh) * | 2022-03-28 | 2022-11-01 | 江西宝顺昌特种合金制造有限公司 | 一种超级奥氏体不锈钢s34565板材及其制备方法 |
| US12365960B2 (en) | 2018-12-20 | 2025-07-22 | Voestalpine BOHLER Edelstahl GmbH & Co. | Drill string component with high corrosion resistance, and method for the production of same |
| US12410496B2 (en) | 2018-12-20 | 2025-09-09 | voestalpine BOHLER Edelstahl GmbH & Co. KG | Superaustenitic material |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116121667A (zh) * | 2021-11-14 | 2023-05-16 | 重庆三爱海陵实业有限责任公司 | 气门及其耐高温合金 |
| JP7845035B2 (ja) * | 2022-05-10 | 2026-04-14 | 大同特殊鋼株式会社 | 非磁性オーステナイト系ステンレス鋼材及びその製造方法 |
| CN115992330B (zh) * | 2023-02-17 | 2024-04-19 | 东北大学 | 一种高氮低钼超级奥氏体不锈钢及其合金成分优化设计方法 |
| DE102024111331A1 (de) * | 2024-04-23 | 2025-10-23 | Mahle International Gmbh | Verfahren zur Herstellung eines Motorflansches für einen Elektromotor |
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-
2018
- 2018-12-20 DE DE102018133255.6A patent/DE102018133255A1/de active Pending
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2019
- 2019-12-19 JP JP2021536112A patent/JP2022514920A/ja active Pending
- 2019-12-19 ES ES19829564T patent/ES2956332T3/es active Active
- 2019-12-19 CN CN201980092769.1A patent/CN113544295A/zh active Pending
- 2019-12-19 CA CA3122044A patent/CA3122044A1/en active Pending
- 2019-12-19 CA CA3124189A patent/CA3124189C/en active Active
- 2019-12-19 EA EA202191413A patent/EA202191413A1/ru unknown
- 2019-12-19 ES ES19829563T patent/ES2957403T3/es active Active
- 2019-12-19 EP EP19829563.6A patent/EP3899063B1/de active Active
- 2019-12-19 US US17/414,008 patent/US12410496B2/en active Active
- 2019-12-19 EA EA202191412A patent/EA202191412A1/ru unknown
- 2019-12-19 EP EP19829564.4A patent/EP3899064B1/de active Active
- 2019-12-19 CN CN201980092768.7A patent/CN113544294A/zh active Pending
- 2019-12-19 JP JP2021536111A patent/JP2022522092A/ja active Pending
- 2019-12-19 US US17/413,986 patent/US20220145436A1/en active Pending
- 2019-12-19 WO PCT/EP2019/086384 patent/WO2020127788A1/de not_active Ceased
- 2019-12-19 WO PCT/EP2019/086385 patent/WO2020127789A1/de not_active Ceased
- 2019-12-19 PL PL19829563.6T patent/PL3899063T3/pl unknown
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12365960B2 (en) | 2018-12-20 | 2025-07-22 | Voestalpine BOHLER Edelstahl GmbH & Co. | Drill string component with high corrosion resistance, and method for the production of same |
| US12410496B2 (en) | 2018-12-20 | 2025-09-09 | voestalpine BOHLER Edelstahl GmbH & Co. KG | Superaustenitic material |
| CN115261718A (zh) * | 2022-03-28 | 2022-11-01 | 江西宝顺昌特种合金制造有限公司 | 一种超级奥氏体不锈钢s34565板材及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA3122044A1 (en) | 2020-06-25 |
| EP3899063A1 (de) | 2021-10-27 |
| US20220145436A1 (en) | 2022-05-12 |
| EP3899063C0 (de) | 2023-08-30 |
| ES2956332T3 (es) | 2023-12-19 |
| PL3899063T3 (pl) | 2023-12-04 |
| ES2957403T3 (es) | 2024-01-19 |
| PL3899064T3 (pl) | 2023-11-20 |
| US12410496B2 (en) | 2025-09-09 |
| BR112021011844A8 (pt) | 2023-05-09 |
| WO2020127789A1 (de) | 2020-06-25 |
| CA3124189C (en) | 2023-10-31 |
| EA202191412A1 (ru) | 2021-09-28 |
| CA3124189A1 (en) | 2020-06-25 |
| BR112021011844A2 (pt) | 2021-08-31 |
| EP3899064C0 (de) | 2023-08-30 |
| JP2022522092A (ja) | 2022-04-14 |
| CN113544295A (zh) | 2021-10-22 |
| DE102018133255A1 (de) | 2020-06-25 |
| WO2020127788A1 (de) | 2020-06-25 |
| EA202191413A1 (ru) | 2021-09-28 |
| EP3899064B1 (de) | 2023-08-30 |
| JP2022514920A (ja) | 2022-02-16 |
| BR112021011849A2 (pt) | 2021-09-08 |
| CN113544294A (zh) | 2021-10-22 |
| US20240052469A2 (en) | 2024-02-15 |
| EP3899063B1 (de) | 2023-08-30 |
| US20230332282A1 (en) | 2023-10-19 |
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