CA2392754A1 - Method for the production of a heat resistant alloy with good resistance to high-temerature oxidation - Google Patents
Method for the production of a heat resistant alloy with good resistance to high-temerature oxidation Download PDFInfo
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- CA2392754A1 CA2392754A1 CA002392754A CA2392754A CA2392754A1 CA 2392754 A1 CA2392754 A1 CA 2392754A1 CA 002392754 A CA002392754 A CA 002392754A CA 2392754 A CA2392754 A CA 2392754A CA 2392754 A1 CA2392754 A1 CA 2392754A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/012—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/017—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of aluminium or an aluminium alloy, another layer being formed of an alloy based on a non ferrous metal other than aluminium
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
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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
- C21D2251/00—Treating composite or clad material
- C21D2251/02—Clad material
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- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention relates to a method for the production of an alloy, with high temperature oxidation resistance and high heat resistance, which comprises coating a base material made from an austenitic, heat resistant nickel-based alloy, or cobalt-based alloy or stainless steel, with high plasticity. Said coating is a layer of aluminium or an aluminium alloy applied on one or both sides. The composite material formed as above, from base material and an aluminium coating with good adhesion, is brought to the final dimensions thereof, by forming with or without intermediate annealing.
Description
Method for the production of a heat resistant alloy with good resistance to high-temperature oxidation The present invention relates to a method for producing an alloy with good resistance to high-temperature oxidation and good thermal stability.
Very frequently, because of their good resistance to oxidation and their good thermal stability, stainless steels and nickel based alloys that contain aluminum are used in industrial furnaces and terotechnology, in motor vehicle exhaust systems, as well as for alloys used in resistors, or heat conductors. If, for reasons of economy, thinner wall thicknesses, andlor high temperatures andlor component loads are selected, the aluminum contents between 1-3% that are found in typical nickel based alloys, as defined by Material Numbers 2.4633 or 2.4851 (DIN Material Numbers), are inadequate for forming a protective layer of aluminum oxide over a protracted period of time. The chromium oxides that form as a result of aluminum depletion entail the danger that they will evaporate at temperatures above 1000°C and contaminate the annealing material.
Metallic materials based on iron-chromium-aluminum, as a described by Material Number DIN 1.4767, are used, for example, as carrier foils in metal exhaust gas catalyzers or as electrical heat conductors.
Usually, these iron based alloys contain approximately 20% chromium, 5%
aluminum, and additives of zirconium, titanium, and rare earth metals (lanthanoids) as described, for example, in DE-C 3706415, which improve the adhesion of the oxide layer and thus the required resistance to oxidation at elevated temperatures of up to 1200°C.
At present, metal foils that are 50-70 ~cm thick are used as carriers for automobile exhaust gas catalyzers. In response to ever-increasing environmental concerns, the thickness of the foils is constantly decreasing. To the same extent that the thickness of the foils is being reduced, demands for increased thermal stability are being imposed, and these cannot be satisfied even with the alloys that are described in EP-A
0516097.
DE-C 19524234 describes a ductile nickel based alloy with 25-30% chromium, 8-iron, and 2.4-3.0% aluminum. This material is characterised by a high level of thermal stability and long-time rupture strength at temperatures of up to 1200"C.
Foils that are thinner than 50 ~,m, which are intended for use as automobile exhaust gas catalyzers, taking into account the present level of development, can only be produced in this alloy under difficult conditions and at great cost.
The iron based alloys that have been described, and which contain approximately 20%
chromium, 5% aluminum, and additives of zirconium, titanium, and rare earth metals, are distinguished by outstanding resistance to high-temperature oxidation;
however, because of their ferritic structure they frequently do not have the thermal stability that is required for many high-temperature applications. Nickel-based alloys as described, for example, by DIN Material Number 2.4851, possess good heat resistance combined with good thermal stability because of their austenitic microstructure. In comparison to the above described ferritic materials, relative to resistance to high-temperature oxidation, these alloys exhibit poor behaviour since an increase in the aluminum content in nickel based ductile alloys to more than 4% has not been possible up to now because of the reforming problems connected with a high aluminum contents. But it is precisely the combination of thermal stability and good resistance to high-temperature oxidation that is so urgently required for automobile exhaust catalysts, in furnace and terotechnology, and in waste gas plants, in order to control process parameters.
GB-A 1, 116, 377 describes a composite material in which an AI-2024 alloy, which is optionally coated with a 7072 alloy, is bonded to a sheet of an austenitic alloy by rolling.
The austenitic alloy is to have 8-10% nickel and 14-8% chromium. The aluminum content should amount to 0.75-1.5%, the carbon content should amount to a maximum of 0.09%, the manganese content should amount to a maximum of 1.6%, the sulphur content should be at a maximum of 0.03%, and the chromium content should amount to a maximum of 1.0%. Prior to the rolling process, the AI-2024 alloy, optionally configured as a composite, is heated to 482°C for 10 minutes. After the rolling process, it is annealed at 493°C for 20 minutes and subsequently cooled in cold water.
Very frequently, because of their good resistance to oxidation and their good thermal stability, stainless steels and nickel based alloys that contain aluminum are used in industrial furnaces and terotechnology, in motor vehicle exhaust systems, as well as for alloys used in resistors, or heat conductors. If, for reasons of economy, thinner wall thicknesses, andlor high temperatures andlor component loads are selected, the aluminum contents between 1-3% that are found in typical nickel based alloys, as defined by Material Numbers 2.4633 or 2.4851 (DIN Material Numbers), are inadequate for forming a protective layer of aluminum oxide over a protracted period of time. The chromium oxides that form as a result of aluminum depletion entail the danger that they will evaporate at temperatures above 1000°C and contaminate the annealing material.
Metallic materials based on iron-chromium-aluminum, as a described by Material Number DIN 1.4767, are used, for example, as carrier foils in metal exhaust gas catalyzers or as electrical heat conductors.
Usually, these iron based alloys contain approximately 20% chromium, 5%
aluminum, and additives of zirconium, titanium, and rare earth metals (lanthanoids) as described, for example, in DE-C 3706415, which improve the adhesion of the oxide layer and thus the required resistance to oxidation at elevated temperatures of up to 1200°C.
At present, metal foils that are 50-70 ~cm thick are used as carriers for automobile exhaust gas catalyzers. In response to ever-increasing environmental concerns, the thickness of the foils is constantly decreasing. To the same extent that the thickness of the foils is being reduced, demands for increased thermal stability are being imposed, and these cannot be satisfied even with the alloys that are described in EP-A
0516097.
DE-C 19524234 describes a ductile nickel based alloy with 25-30% chromium, 8-iron, and 2.4-3.0% aluminum. This material is characterised by a high level of thermal stability and long-time rupture strength at temperatures of up to 1200"C.
Foils that are thinner than 50 ~,m, which are intended for use as automobile exhaust gas catalyzers, taking into account the present level of development, can only be produced in this alloy under difficult conditions and at great cost.
The iron based alloys that have been described, and which contain approximately 20%
chromium, 5% aluminum, and additives of zirconium, titanium, and rare earth metals, are distinguished by outstanding resistance to high-temperature oxidation;
however, because of their ferritic structure they frequently do not have the thermal stability that is required for many high-temperature applications. Nickel-based alloys as described, for example, by DIN Material Number 2.4851, possess good heat resistance combined with good thermal stability because of their austenitic microstructure. In comparison to the above described ferritic materials, relative to resistance to high-temperature oxidation, these alloys exhibit poor behaviour since an increase in the aluminum content in nickel based ductile alloys to more than 4% has not been possible up to now because of the reforming problems connected with a high aluminum contents. But it is precisely the combination of thermal stability and good resistance to high-temperature oxidation that is so urgently required for automobile exhaust catalysts, in furnace and terotechnology, and in waste gas plants, in order to control process parameters.
GB-A 1, 116, 377 describes a composite material in which an AI-2024 alloy, which is optionally coated with a 7072 alloy, is bonded to a sheet of an austenitic alloy by rolling.
The austenitic alloy is to have 8-10% nickel and 14-8% chromium. The aluminum content should amount to 0.75-1.5%, the carbon content should amount to a maximum of 0.09%, the manganese content should amount to a maximum of 1.6%, the sulphur content should be at a maximum of 0.03%, and the chromium content should amount to a maximum of 1.0%. Prior to the rolling process, the AI-2024 alloy, optionally configured as a composite, is heated to 482°C for 10 minutes. After the rolling process, it is annealed at 493°C for 20 minutes and subsequently cooled in cold water.
EP-A 0 511 699 and DE-A 196 52 399 describes ferritic alloys coated with aluminum, as well as reforming and heat treatment, although these are not usable on austenitic alloys.
Finally, US-A 4,535,034 describes an austenitic alloy of the following composition:
maximum 0.7% carbon, maximum 3% silicon, maximum 2% manganese, 10-40%
nickel, 9-30% chromium, 2-8% aluminum, and the remainder iron, in addition to impurities caused by the production process. The alloy is in the form of sheet metal that is coated with aluminum and then subjected to heat treatment. Reforming is not described, and neither is it possible, since intermetallic phases are formed in the boundary layers. It is preferred that this composite material be used in major terotechnology projects.
Thus, it is the objective of the present invention to describe a method and an alloy with which components with dimensions of less than 50 ~,m can be manufactured without any increased outlay, and which has a high level of resistance to high-temperature oxidation, and thermal stability of greater than 50 MPa at up to 1000°C. The alloy is intended for use in a wide variety of applications.
Finally, US-A 4,535,034 describes an austenitic alloy of the following composition:
maximum 0.7% carbon, maximum 3% silicon, maximum 2% manganese, 10-40%
nickel, 9-30% chromium, 2-8% aluminum, and the remainder iron, in addition to impurities caused by the production process. The alloy is in the form of sheet metal that is coated with aluminum and then subjected to heat treatment. Reforming is not described, and neither is it possible, since intermetallic phases are formed in the boundary layers. It is preferred that this composite material be used in major terotechnology projects.
Thus, it is the objective of the present invention to describe a method and an alloy with which components with dimensions of less than 50 ~,m can be manufactured without any increased outlay, and which has a high level of resistance to high-temperature oxidation, and thermal stability of greater than 50 MPa at up to 1000°C. The alloy is intended for use in a wide variety of applications.
This objective has been achieved by a method for producing an alloy with a high level of resistance to high-temperature oxidation and by a high level of thermal stability, a base material of an austenitic, thermally stable nickel based alloy or an austenitic cobalt based alloy or an austenitic stainless steel with good reforming properties being coated on one or both sides with a layer of aluminum or an aluminum alloy and this composite material, formed from the basic material and the aluminum coating, which has good adhesive properties being brought to its end dimensions by reforming, with or without the intermediate annealing, a base material of the following analysis (in mass-%) being used:
Nickel Chromium Carbon Aluminum Iron 20 - 80 10 - 35 0.01 - 0.4 < 4 Remainder + the usual tramp elements this basic material that is used containing at least one of the following maximal additives (in mass-%):
Nickel Chromium Carbon Aluminum Iron 20 - 80 10 - 35 0.01 - 0.4 < 4 Remainder + the usual tramp elements this basic material that is used containing at least one of the following maximal additives (in mass-%):
5% cobalt, 10% molybdenum, 4% tungsten, 4% niobium, 5% tantalum, 4% silicon, 3%
titanium, 5% copper.
On the other hand, this objective has been achieved with a method far producing an alloy with good resistance to high-temperature oxidation, and a high level of thermal stability, a base material of an austenitic, thermally stable nickel based alloy, an austenitic cobalt based alloy, or austenitic stainless steel with good reforming properties a being coated on one or both sides with a layer of aluminum or an aluminum alloy, and this composite material, formed from the base material and the aluminum coating, which has good adhesive properties, being brought to its end dimensions, with or without intermediate annealing, when a base material of the following analysis (in mass-%) is used:
Nickel Chromium Carbon Aluminum Iron 20 - 80 10 - 35 0.01 - 0.4 < 4 Remainder + the usual tramp elements when the base material that is used contains of least one of the following maximal additives (in mass-%):
20% cobalt, 28% molybdenum, 11 % tungsten, 5% niobium, 12% tantalum, 4%
silicon, 5% titanium, 5% copper, 2.5% zirconium.
Advantageous developments of the object of the present invention as set out in the primary claims are described in the associated secondary claims.
The object of the present invention refers to a method for producing a multi-layer composite material, in which a base material of an austenitic, thermally stable nickel based alloy or cobalt based alloy or stainless steel with good reforming properties is coated on one or both sides with a layer of aluminum or an aluminum alloy, and this composite material, which is formed from the base material and the aluminum coating, which has good adhesive properties, is brought to its end dimensions, with or without intermediate annealing, and then homogenized at a temperature of greater than 600°C.
The homogenization can be carried out at the intermediate or end dimensions or in a subsequent step in the process, depending on the demands that are made on the end product.
Most surprisingly, an homogenous material with good thermal stability and a high level of resistance to high-temperature oxidation resistance, which is simple to work, can be produced by this method.
This objective has been achieved by an alloy with a high level of resistance to high-temperature oxidation and a high level of thermal stability with a base material consisting of the following (in mass-%) Nickel: 20-80%
Chromium: 10-35%
Carbon: 0.01-0.4%
Aluminum: < 4%
Iron: remainder which includes impurities caused by production conditions, with the least one of the following maximal additives (in mass-%):
titanium, 5% copper.
On the other hand, this objective has been achieved with a method far producing an alloy with good resistance to high-temperature oxidation, and a high level of thermal stability, a base material of an austenitic, thermally stable nickel based alloy, an austenitic cobalt based alloy, or austenitic stainless steel with good reforming properties a being coated on one or both sides with a layer of aluminum or an aluminum alloy, and this composite material, formed from the base material and the aluminum coating, which has good adhesive properties, being brought to its end dimensions, with or without intermediate annealing, when a base material of the following analysis (in mass-%) is used:
Nickel Chromium Carbon Aluminum Iron 20 - 80 10 - 35 0.01 - 0.4 < 4 Remainder + the usual tramp elements when the base material that is used contains of least one of the following maximal additives (in mass-%):
20% cobalt, 28% molybdenum, 11 % tungsten, 5% niobium, 12% tantalum, 4%
silicon, 5% titanium, 5% copper, 2.5% zirconium.
Advantageous developments of the object of the present invention as set out in the primary claims are described in the associated secondary claims.
The object of the present invention refers to a method for producing a multi-layer composite material, in which a base material of an austenitic, thermally stable nickel based alloy or cobalt based alloy or stainless steel with good reforming properties is coated on one or both sides with a layer of aluminum or an aluminum alloy, and this composite material, which is formed from the base material and the aluminum coating, which has good adhesive properties, is brought to its end dimensions, with or without intermediate annealing, and then homogenized at a temperature of greater than 600°C.
The homogenization can be carried out at the intermediate or end dimensions or in a subsequent step in the process, depending on the demands that are made on the end product.
Most surprisingly, an homogenous material with good thermal stability and a high level of resistance to high-temperature oxidation resistance, which is simple to work, can be produced by this method.
This objective has been achieved by an alloy with a high level of resistance to high-temperature oxidation and a high level of thermal stability with a base material consisting of the following (in mass-%) Nickel: 20-80%
Chromium: 10-35%
Carbon: 0.01-0.4%
Aluminum: < 4%
Iron: remainder which includes impurities caused by production conditions, with the least one of the following maximal additives (in mass-%):
Cobalt: 5%
Molybdenum: 10%
Tungsten: 4%
Niobium: 4%
Tantalum: 5%
Silicon: 4%
Titanium: 3%
Copper: 5%
this base material being coated on one or both sides with a layer of aluminum or an aluminum alloy.
As an alternative, this objective can be achieved by an alloy with a high level resistance to high-temperature oxidation and a high level of thermal stability, with the base material consisting of the following (in mass-%) Nickel: 20-80%
Chromium: 10-35%
Carbon: 0.01-0.4%
Aluminum < 4%
Iron: remainder which includes impurities caused by production conditions, with the least one of the following maximal additives (in mass-%):
Molybdenum: 10%
Tungsten: 4%
Niobium: 4%
Tantalum: 5%
Silicon: 4%
Titanium: 3%
Copper: 5%
this base material being coated on one or both sides with a layer of aluminum or an aluminum alloy.
As an alternative, this objective can be achieved by an alloy with a high level resistance to high-temperature oxidation and a high level of thermal stability, with the base material consisting of the following (in mass-%) Nickel: 20-80%
Chromium: 10-35%
Carbon: 0.01-0.4%
Aluminum < 4%
Iron: remainder which includes impurities caused by production conditions, with the least one of the following maximal additives (in mass-%):
Cobalt: 20%
Molybdenum: 28%
Tungsten: 11 Niobium: 5%
Tantalum: 12%
Silicon: 4%
Titanium: 5%
Copper: 5%
Zirconium: 2.5%
this base material being coated on one or both sides with a layer of aluminum or an aluminum alloy.
The preferred areas of application for the object of the present invention are as follows:
-catalyst carrier foils -heat conductors or material for resistors -components in industrial furnaces or terotechnology -exhaust gas systems used in motor vehicles.
A number of examples that document the good material properties of the object of the present invention are set out below.
Molybdenum: 28%
Tungsten: 11 Niobium: 5%
Tantalum: 12%
Silicon: 4%
Titanium: 5%
Copper: 5%
Zirconium: 2.5%
this base material being coated on one or both sides with a layer of aluminum or an aluminum alloy.
The preferred areas of application for the object of the present invention are as follows:
-catalyst carrier foils -heat conductors or material for resistors -components in industrial furnaces or terotechnology -exhaust gas systems used in motor vehicles.
A number of examples that document the good material properties of the object of the present invention are set out below.
s Example 1 The base material is of the following composition:
Ni Cr C Mn Si AI Ti Fe 31.5 20.1 0.02 0.4 0.4 0.2 0.4 Remainder The base material was cast as a block, heated to form an ingot, and then processed to form a 3.5-mm thick, hot-rolled strip. It was then cold rolled to its thickness of 0.6 mm, soft annealed, and then coated with a layer of 4.7 mass-% aluminum by roll bonding.
The coated composite material could then be rolled out to a 50 ~,m thick foil without further heat treatment. After homogenization at a temperature above 600°C, this resulted in a homogenous material with a thermal stability of 60 MPa at 1000°C.
Resistance to high-temperature oxidation was tested after the material had been kept at 1100 degrees Celsius. After 400 hours, the mass of the sample changed by less than 7.6%.
Example 2 The base material was of the following composition:
Ni Cr C Mn Si AI Ti Fe 30.5 20.1 0.04 0.4 0.5 0.3 0.4 Remainder The base material was cast as a block, heated to form an ingot, and then processed to form a 3.5-mm thick, hot-rolled strip. It was then cold rolled to its thickness of 0.6 mm, soft annealed, and then coated with a layer of 4.7 mass-% aluminum by roll bonding.
The coated composite material could then be rolled out to a 50 ~cm thick foil without further heat treatment.
Ni Cr C Mn Si AI Ti Fe 31.5 20.1 0.02 0.4 0.4 0.2 0.4 Remainder The base material was cast as a block, heated to form an ingot, and then processed to form a 3.5-mm thick, hot-rolled strip. It was then cold rolled to its thickness of 0.6 mm, soft annealed, and then coated with a layer of 4.7 mass-% aluminum by roll bonding.
The coated composite material could then be rolled out to a 50 ~,m thick foil without further heat treatment. After homogenization at a temperature above 600°C, this resulted in a homogenous material with a thermal stability of 60 MPa at 1000°C.
Resistance to high-temperature oxidation was tested after the material had been kept at 1100 degrees Celsius. After 400 hours, the mass of the sample changed by less than 7.6%.
Example 2 The base material was of the following composition:
Ni Cr C Mn Si AI Ti Fe 30.5 20.1 0.04 0.4 0.5 0.3 0.4 Remainder The base material was cast as a block, heated to form an ingot, and then processed to form a 3.5-mm thick, hot-rolled strip. It was then cold rolled to its thickness of 0.6 mm, soft annealed, and then coated with a layer of 4.7 mass-% aluminum by roll bonding.
The coated composite material could then be rolled out to a 50 ~cm thick foil without further heat treatment.
Claims (11)
1. Method for producing an alloy with a high level of resistance to high-temperature oxidation and a high level of thermal stability, a base material of an austenitic, thermally stable nickel based alloy or an austenitic cobalt based alloy or an austenitic stainless steel with good reforming properties being coated on one or both sides with a layer of aluminum or an aluminum alloy, this composite material, formed from the base material and the aluminum coating, which has good adhesive properties being brought to its end dimensions by reforming, with or without the intermediate annealing, a base material of the following analysis (in mass-%) being used:
Nickel Chromium Carbon Aluminum Iron 20 - 80 10 - 35 0.01 - 0.4 < 4 Remainder + the usual tramp elements this basic material that is used containing at least one of the following maximal additives (in mass-%):
5% cobalt, 10% molybdenum, 4% tungsten, 4% niobium, 5% tantalum, 4% silicon, 3%
titanium, 5% copper.
Nickel Chromium Carbon Aluminum Iron 20 - 80 10 - 35 0.01 - 0.4 < 4 Remainder + the usual tramp elements this basic material that is used containing at least one of the following maximal additives (in mass-%):
5% cobalt, 10% molybdenum, 4% tungsten, 4% niobium, 5% tantalum, 4% silicon, 3%
titanium, 5% copper.
2. Method for producing an alloy with a high level of resistance to high-temperature oxidation and a high level of the thermal stability, a base material of an austenitic, thermally stable nickel based alloy or an austenitic cobalt based alloy, or austenitic stainless steel with good reforming properties being coated on one or both sides with a layer of aluminum or an aluminum alloy, this composite material, formed from the base material and the aluminum coating, which has good adhesive properties, being brought to its end dimensions, with or without intermediate annealing, when a base material of the following analysis (in mass-%) is used:
Nickel Chromium Carbon Aluminum Iron 20 - 80 10 - 35 0.01 - 0.4 < 4 Remainder + the usual tramp elements when the base material that is used contains of least one of the following maximal additives (in mass-%):
20% cobalt, 28% molybdenum, 11% tungsten, 5% niobium 12% tantalum, 4%
silicon, 5% titanium, 5% copper, 2.5% zirconium.
Nickel Chromium Carbon Aluminum Iron 20 - 80 10 - 35 0.01 - 0.4 < 4 Remainder + the usual tramp elements when the base material that is used contains of least one of the following maximal additives (in mass-%):
20% cobalt, 28% molybdenum, 11% tungsten, 5% niobium 12% tantalum, 4%
silicon, 5% titanium, 5% copper, 2.5% zirconium.
3. Method as defined in Claim 1 or Claim 2, characterized in that the multilayer composite material is homogenized at a temperature of greater than 600°C, when at its end dimensions.
4. Method as defined in one of the Claims 1 to 3, characterised in that the homogenization is carried out on the end product when at its intermediate/end dimensions or in a subsequent step in the process, depending an the demands placed on the end product.
5. Method as defined in one of the Claims 1 to 4, characterised in that base material that is used contains one or a plurality of elements with an affinity for oxygen, rare earth metals, hafnium, zirconium, silicon, titanium, yttrium or aluminum.
6. Alloy with a high level of resistance to high-temperature oxidation and a high level of thermal stability with a base material consisting of the following (in mass-%) Nickel: 20-80%
Chromium: 10-35%
Carbon: 0.01-0.4%
Aluminum: < 4%
Iron: remainder which includes impurities caused by production. conditions, with the least one of the following maximal additives (in mass-%) Cobalt: 5%
Molybdenum: 10%
Tungsten: 4%
Niobium: 4%
Tantalum: 5%
Silicon: 4%
Titanium: 3%
Copper: 5%
this base material being coated on one or both sides with a layer of aluminum or an aluminum alloy.
Chromium: 10-35%
Carbon: 0.01-0.4%
Aluminum: < 4%
Iron: remainder which includes impurities caused by production. conditions, with the least one of the following maximal additives (in mass-%) Cobalt: 5%
Molybdenum: 10%
Tungsten: 4%
Niobium: 4%
Tantalum: 5%
Silicon: 4%
Titanium: 3%
Copper: 5%
this base material being coated on one or both sides with a layer of aluminum or an aluminum alloy.
7. Alloy with a high level of resistance to high-temperature oxidation and a high level of thermal stability with a base material consisting of the following (in mass-%) Nickel: 20-80%
Chromium: 10-35%
Carbon: 0.01-0.4%
Aluminum: < 4%
Iron: remainder which includes impurities caused by production conditions, with the least one of the following maximal additives (in mass-%) Cobalt: 20%
Molybdenum: 28%
Tungsten: 11%
Niobium: 5%
Tantalum: 12%
Silicon: 4%
Titanium: 5%
Copper: 5%
Zirconium: 2.5%
this base material being coated on one or both sides with a layer of aluminum or an aluminum alloy.
Chromium: 10-35%
Carbon: 0.01-0.4%
Aluminum: < 4%
Iron: remainder which includes impurities caused by production conditions, with the least one of the following maximal additives (in mass-%) Cobalt: 20%
Molybdenum: 28%
Tungsten: 11%
Niobium: 5%
Tantalum: 12%
Silicon: 4%
Titanium: 5%
Copper: 5%
Zirconium: 2.5%
this base material being coated on one or both sides with a layer of aluminum or an aluminum alloy.
8. Use of the alloy as defined in Claim 6 or Claim 7 as a catalyzer carrier foil.
9. Use of the alloy as defined in Claim 6 or Claim 7 as a heat conductor or as resistor material.
10. Use of the alloy as defined in Claim 6 or Claim 7 in the construction of industrial furnaces.
11. Use of the alloy as defined in Claim 6 or Claim 7, in exhaust gas systems for motor vehicles.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19957646A DE19957646A1 (en) | 1999-11-30 | 1999-11-30 | Alloy production comprises coating base material made of austenitic nickel-based alloy or cobalt-based alloy or special steel on one or both sides with layer of aluminum or aluminum alloy |
| DE19957646.7 | 1999-11-30 | ||
| PCT/EP2000/008743 WO2001039971A1 (en) | 1999-11-30 | 2000-09-07 | Method for the production of a heat resistant alloy with good high temperature oxidation resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2392754A1 true CA2392754A1 (en) | 2001-06-07 |
Family
ID=7930891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002392754A Abandoned CA2392754A1 (en) | 1999-11-30 | 2000-09-07 | Method for the production of a heat resistant alloy with good resistance to high-temerature oxidation |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP1235682B1 (en) |
| JP (1) | JP2003515457A (en) |
| KR (1) | KR100503672B1 (en) |
| CN (1) | CN1284666C (en) |
| AT (1) | ATE252450T1 (en) |
| CA (1) | CA2392754A1 (en) |
| DE (2) | DE19957646A1 (en) |
| DK (1) | DK1235682T3 (en) |
| ES (1) | ES2207553T3 (en) |
| HK (1) | HK1051166A1 (en) |
| WO (1) | WO2001039971A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9815147B2 (en) | 2014-04-04 | 2017-11-14 | Special Metals Corporation | High strength Ni—Cr—Mo—W—Nb—Ti welding product and method of welding and weld deposit using the same |
| US10870908B2 (en) | 2014-02-04 | 2020-12-22 | Vdm Metals International Gmbh | Hardening nickel-chromium-iron-titanium-aluminium alloy with good wear resistance, creep strength, corrosion resistance and processability |
| US11098389B2 (en) | 2014-02-04 | 2021-08-24 | Vdm Metals International Gmbh | Hardened nickel-chromium-titanium-aluminum alloy with good wear resistance, creep resistance, corrosion resistance and workability |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200301784A (en) * | 2002-01-09 | 2003-07-16 | Thyssenkrupp Vdm Gmbh | Heat-resistant and high-temperature-oxidation-resistant alloy, method for the production of the same |
| SE527174C2 (en) * | 2003-12-30 | 2006-01-17 | Sandvik Intellectual Property | Method of manufacturing an austenitic stainless steel alloy by coating with aluminum and its use in high temperature applications |
| JP2006320951A (en) * | 2005-05-20 | 2006-11-30 | Kagoshima Univ | Composite material and its manufacturing method |
| US8512485B2 (en) * | 2011-01-03 | 2013-08-20 | General Electric Company | Alloy |
| CN103381678A (en) * | 2013-08-08 | 2013-11-06 | 常熟市东方特种金属材料厂 | Washable metal |
| CN104480350A (en) * | 2014-10-20 | 2015-04-01 | 江苏青阳管业有限公司 | Anticorrosion alloy plating for equipment |
| CN105755320A (en) * | 2016-03-31 | 2016-07-13 | 苏州睿昕汽车配件有限公司 | Preparation method of high-strength piston material of automobile diesel engine |
| CN108610821A (en) * | 2018-05-24 | 2018-10-02 | 台州市路桥博尔美塑粉有限公司 | A kind of refractory metal type powdery paints and preparation method thereof |
| CN115233107A (en) * | 2022-07-28 | 2022-10-25 | 中国核动力研究设计院 | Al-containing austenitic stainless steel for supercritical fluid gas-cooled reactor cladding and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1116377A (en) * | 1964-07-02 | 1968-06-06 | Reynolds Metals Co | Metal composites |
| US4535034A (en) * | 1983-12-30 | 1985-08-13 | Nippon Steel Corporation | High Al heat-resistant alloy steels having Al coating thereon |
| US4829655A (en) * | 1987-03-24 | 1989-05-16 | W. R. Grace & Co.-Conn. | Catalyst support and method for making same |
| EP0511699B1 (en) * | 1991-04-29 | 1995-08-09 | General Motors Corporation | Aluminium-coated iron-chromium foil containing additions of rare earths or yttrium |
| US5976708A (en) * | 1995-11-06 | 1999-11-02 | Isuzu Ceramics Research Institute Co., Ltd. | Heat resistant stainless steel wire |
| DE19652399A1 (en) * | 1996-12-17 | 1998-06-18 | Krupp Vdm Gmbh | Production of multicomponent foil |
-
1999
- 1999-11-30 DE DE19957646A patent/DE19957646A1/en not_active Withdrawn
-
2000
- 2000-09-07 DK DK00964136T patent/DK1235682T3/en active
- 2000-09-07 EP EP00964136A patent/EP1235682B1/en not_active Expired - Lifetime
- 2000-09-07 CN CNB008160473A patent/CN1284666C/en not_active Expired - Fee Related
- 2000-09-07 JP JP2001541685A patent/JP2003515457A/en active Pending
- 2000-09-07 DE DE50004201T patent/DE50004201D1/en not_active Expired - Lifetime
- 2000-09-07 ES ES00964136T patent/ES2207553T3/en not_active Expired - Lifetime
- 2000-09-07 KR KR10-2002-7006851A patent/KR100503672B1/en not_active IP Right Cessation
- 2000-09-07 AT AT00964136T patent/ATE252450T1/en not_active IP Right Cessation
- 2000-09-07 CA CA002392754A patent/CA2392754A1/en not_active Abandoned
- 2000-09-07 WO PCT/EP2000/008743 patent/WO2001039971A1/en not_active Application Discontinuation
-
2003
- 2003-05-16 HK HK03103466A patent/HK1051166A1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10870908B2 (en) | 2014-02-04 | 2020-12-22 | Vdm Metals International Gmbh | Hardening nickel-chromium-iron-titanium-aluminium alloy with good wear resistance, creep strength, corrosion resistance and processability |
| US11098389B2 (en) | 2014-02-04 | 2021-08-24 | Vdm Metals International Gmbh | Hardened nickel-chromium-titanium-aluminum alloy with good wear resistance, creep resistance, corrosion resistance and workability |
| US9815147B2 (en) | 2014-04-04 | 2017-11-14 | Special Metals Corporation | High strength Ni—Cr—Mo—W—Nb—Ti welding product and method of welding and weld deposit using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20020058052A (en) | 2002-07-12 |
| DE19957646A1 (en) | 2001-05-31 |
| EP1235682A1 (en) | 2002-09-04 |
| KR100503672B1 (en) | 2005-07-22 |
| WO2001039971A1 (en) | 2001-06-07 |
| CN1284666C (en) | 2006-11-15 |
| DK1235682T3 (en) | 2004-02-02 |
| HK1051166A1 (en) | 2003-07-25 |
| DE50004201D1 (en) | 2003-11-27 |
| JP2003515457A (en) | 2003-05-07 |
| CN1391517A (en) | 2003-01-15 |
| ATE252450T1 (en) | 2003-11-15 |
| ES2207553T3 (en) | 2004-06-01 |
| EP1235682B1 (en) | 2003-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |