EP2059623A1 - Rustproof austenitic cast steel, method for production and use thereof - Google Patents
Rustproof austenitic cast steel, method for production and use thereofInfo
- Publication number
- EP2059623A1 EP2059623A1 EP07787731A EP07787731A EP2059623A1 EP 2059623 A1 EP2059623 A1 EP 2059623A1 EP 07787731 A EP07787731 A EP 07787731A EP 07787731 A EP07787731 A EP 07787731A EP 2059623 A1 EP2059623 A1 EP 2059623A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- content
- cast steel
- sub
- aqu
- steel
- 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.)
- Ceased
Links
- 229910001208 Crucible steel Inorganic materials 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 79
- 239000011651 chromium Substances 0.000 claims abstract description 54
- 238000005266 casting Methods 0.000 claims abstract description 36
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 31
- 239000000956 alloy Substances 0.000 claims abstract description 31
- 230000000694 effects Effects 0.000 claims abstract description 31
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 30
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 29
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 24
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 22
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010703 silicon Substances 0.000 claims abstract description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 15
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 10
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 10
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 238000005057 refrigeration Methods 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 38
- 239000010959 steel Substances 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 239000011572 manganese Substances 0.000 claims description 19
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 10
- 239000011733 molybdenum Substances 0.000 claims description 10
- 239000010955 niobium Substances 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000010941 cobalt Substances 0.000 claims description 8
- 229910017052 cobalt Inorganic materials 0.000 claims description 8
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 8
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 8
- 239000010937 tungsten Substances 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 5
- 238000005275 alloying Methods 0.000 claims description 4
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 229910001566 austenite Inorganic materials 0.000 description 15
- 229910001220 stainless steel Inorganic materials 0.000 description 8
- 229910000859 α-Fe Inorganic materials 0.000 description 8
- 239000010935 stainless steel Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 229910000734 martensite Inorganic materials 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 101100218329 Caenorhabditis elegans atz-1 gene Proteins 0.000 description 1
- 241000221535 Pucciniales Species 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229960005191 ferric oxide Drugs 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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 by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
-
- 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
-
- 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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Definitions
- the innovation relates to a stainless austenitic cast steel, a process for its production, and its use.
- Stainless austenitic cast steel alloys are not alloyed with aluminum and generally contain about 1% silicon. Aluminum and higher silicon contents negatively influence the degree of purity of the cast steel, if the contact of the molten steel with oxygen in the metallurgical production process is not prevented. For this reason, the aluminum and silicon content in stainless austenitic cast steel alloys is minimized.
- austenitic stainless steel cast stainless steel generally has d-ferrite contents of 5 to 10%.
- the ⁇ ferrite content levels cause an increase in the 0.2% yield strength and tensile strength and a decrease in elongation at break compared to the purely austenitic microstructure state.
- a coordinated nickel and chromium equivalent is set via the chemical composition of the cast steel. Due to the low d-ferrite content, the solidification structure is changed. Unwanted segregation products that accumulate at the grain boundaries are reduced, which has a positive effect on the hot crack sensitivity.
- the chromium content in stainless austenitic cast steel is about 19%.
- molybdenum contents of 2 to 3% are often alloyed.
- the chromium and molybdenum contents lead to the formation of a passivating protective layer, whereby the Corrosion resistance is increased especially against halides.
- the ferrite formation is supported.
- the nickel content in stainless steel is about 10% and the carbon content is about 0.03% [1-3, 6]. Changes in the chemical composition make it possible to produce cast steel alloys with special properties.
- a stainless steel casting is given, which has a high resistance to vibration cracking and high pitting corrosion resistance.
- the TRIP effect (transformation induced plasticity) in austenitic cast steel alloys has not yet been investigated in contrast to austenitic steels.
- Technical applications that use the TRIP effect in austenitic cast steel have also been canceled.
- the reason for this is obviously due to the fact that austenitic cast steel is not cold-formed and the parts made from it are used in the cast state.
- the TRIP effect in cast alloys can not technically be used to improve cold workability.
- austenitic lightweight steels which have a TRIP effect at room temperature and may be alloyed with, inter alia, aluminum and silicon are used in wrought alloys in various industries.
- austenitic stainless steels and non-passivating steels, e.g. the high manganese austenitic lightweight steels. These steels are characterized by a high cold workability due to the TRIP effect [4, 5].
- High Manganese austenitic steels usually contain less than 12% chromium, which is why they are not stainless. In these steels, iron-oxide layers form on the surface and the material rusts. If aluminum and silicon oxides are embedded in these rust layers, the corrosion resistance increases.
- a manganese-containing high-strength lightweight structural steel is described.
- the concentrations for the alloying elements aluminum, silicon, nickel, manganese and Nitrogen are similar to the concentrations of the steel mold casting according to the invention.
- this steel contains chromium contents of less than 10% and is thus not a stainless steel.
- this steel is not used in the cast state, but transformed for body and prestressed concrete parts from semi-finished products.
- Hot or cold rolled semi-finished products serve as starting material for cold-formed parts.
- the TRIP effect in austenitic wrought alloys is controlled by the chemical composition of the austenite and the forming conditions [5].
- a disadvantage of the prior art is the non-use of known from austenitic wrought alloys TRIP effect for cast steel to improve its properties.
- Ni aqu % Ni + 30% C + 18% N + 0.5% Mn + 0.3% Co + 0.2% Cu - 0.2% Al (2)
- the advantages of the austenitic cast steel alloys according to the invention lie in the increase in tensile strength and elongation at break. This means that the TRIP effect makes the cast steel stronger and at the same time tougher. He can thus absorb greater forces under load and deform more, without breaking. The scope of the TRIP-Stahlformgusslegtechniken invention is thereby extended. Above all, the resulting lightweight construction saves energy and material costs.
- Tensile strengths of greater than 550 MPa and elongations at break of more than 30% are achieved for the inventive cast steel. In this way, parts cast from the cast steel can be equipped with a kind of crash reserve. This means that the cast steel mold is cast and integrated into an application without being subjected to a tensile load. However, if there is a crash or heavy load, the part can absorb high tensile and elongation at break due to the potential to exhibit the TRIP effect.
- the TRIP effect can be influenced by the chemical composition of austenite.
- a vote of the austenite and ferrite stabilizing elements differ with the same chemical composition.
- austenitic cast structures exhibit settling-related segregations, which are largely retained during technical cooling.
- dendritic solidification influences the defect structure of austenite.
- austenite-stabilizing elements accumulate preferentially in austenite. At the same time austenite is depleted of ferrite stabilizing elements. The influence of these factors on the TRIP effect in cast steel alloys is not yet known.
- the cast structure of the material according to the invention must consist of metastable austenite.
- the austenite has a tendency to form deformation-induced martensite at room temperature and at low temperatures.
- a corresponding chromium and nickel equivalent is set in austenitic cast steel. That is, the chemical composition of the steels must be matched with respect to the ferrite-stabilizing and austenite-stabilizing elements, as stated in the claim.
- the chrome and nickel equivalent for austenitic cast steel with TRIP effect differs from the chromium and nickel equivalent for austenitic wrought alloys with TRIP effect.
- Nickel and / or manganese are alloyed with austenitic cast steel to form austenite at high temperatures.
- Manganese is used as a cheaper substitution element for nickel. This is usually associated with a deterioration of corrosion resistance.
- the addition of nitrogen may compensate for this negative effect. Nitrogen improves the strength and corrosion properties [8] and at the same time achieves austenite stabilization.
- the chromium content of the cast steel according to the invention is between 12 and 20% but under 10%. Steel with more than 12% chromium is the guarantor for the passivation of the material.
- chromium is alloyed as a ferrite-stabilizing element. At the same time, it also influences austenite stability by causing martensite formation increasing chromium content difficult.
- the contents of austenite- and ferrite-stabilizing elements are to be matched to one another.
- the elements aluminum and silicon are used to adjust once the required chromium or nickel equivalent.
- the influence of austenite-dissolved aluminum and silicon on the corresponding equivalents is described by means of impact factors.
- different levels of aluminum and silicon can be used to set the TRIP effect in a targeted manner via the solution or precipitation state of nitrides, such as AlN.
- nitrides such as AlN.
- finely dispersed AlN precipitates in the fine-grained austenite additionally improve the profile of the cast steel in terms of its strength and toughness properties.
- the more readily available elements silicon and aluminum can replace more expensive alloying elements in steel, such as nickel and chromium.
- the austenitic cast stainless steel according to the invention has a manganese content of 0 to 25%, a chromium content of 12 to 20%, but never less than 10%, a nickel content of 0 to 12%, a niobium content of 0 to 1, 2%, a Tantalum content of 0 to 1, 2%, a carbon content of 0.01 to 0.15%, a nitrogen content of 0.005 to 0.5%, a copper content of 0 to 4%, a cobalt content of 0 to 1%, a molybdenum content of 0 to 4%, a tungsten content of 0 to 3%, a titanium content of 0 to 1% and a vanadium content of 0 to 0.15%.
- the mechanical properties improve.
- the tensile strength increases to values of more than 550 MPa and the elongation at break of more than 30% is reached.
- the cast steel material behaves particularly tough despite the increased strength values.
- the erfmdungssiee steel casting has a high energy absorption capacity at room temperature and low temperatures.
- the energy absorption capacity at room temperature for these alloys is between about 0.30-0.40 J / mm 3 . This means that at a sudden stress, such.
- the steel casting is solidified and deformed at the same time, without breaking.
- the steel casting is particularly suitable for crash-stressed components in the automotive industry.
- the manganese content is from 0 to 25%, the chromium content from 12 to 20%, the nickel content from 0 to 12%, the niobium content from 0 to 1, 2%, the tantalum content from 0 to 0.2%, the carbon content of 0.01 to 0.15%, the nitrogen content of 0.005 to 0.5%, the copper content of 0 to 4%, the cobalt content of 0 to 1%, the molybdenum content of 0 to 4%, the tungsten content of 0 to 3%, the titanium content from 0 to 1%, and the vanadium content from 0 to 0.15%.
- the stainless austenitic cast steel according to the invention preferably has a chromium content of 16.5%, a nickel content of 6.5%, a silicon content of 1.1%, a manganese content of 7% and an aluminum content of 0.05%.
- the carbon content is 0.04% and the nitrogen content is 0.1% .4.
- Ni equi % Ni + 30% C + 18% N + 0.5% Mn + 0.3% Co + 0.2% Cu - 0.2% Al (2)
- the cast steel may be subjected to a heat treatment in a further step.
- the alloy used in the process has a manganese content of 0 to 25%, a chromium content of 12 to 20%, a nickel content of 0 to 12%, a niobium content of 0 to 1, 2%, a tantalum content of 0 to 0.2%. , a carbon content of 0.01 to 0.15 %, a nitrogen content of 0.005 to 0.5%, a copper content of 0 to 4%, a cobalt content of 0 to 1%, a molybdenum content of 0 to 4%, a tungsten content of 0 to 3%, a titanium content of 0 to 1 %, and a vanadium content of 0 to 0.15%.
- the alloy used in the process has a manganese content of 5 to 12%, a nickel content of 2 to 8%, a copper content of 0 to 2%, a cobalt content of 0 to 0.5%, a molybdenum content of 0 to 2.5%. , and / or a tungsten content of 0 to 0.5%.
- the object is also achieved by a cast steel, produced by a method as described above, characterized in that the cast steel has a tensile strength greater than 550 MPa and an elongation at break over 30%.
- the cast steel exhibits a TRIP effect under load.
- a method according to the invention for the use of a steel casting in a technical application comprises the steps of: carrying out the method steps of one of the methods as described above for the production of the cast steel; and use of the steel die casting in the technical application, wherein the use is carried out after the casting without the execution of a chipless forming process.
- Non-cutting or non-cutting forming processes are in the context of this invention, all forming processes that would trigger the TRIP process in the steel casting by mechanical action. These forming processes, such as rolling, forging, pressing, etc. are not carried out, so that the steel casting after use in the application still has the potential to show the TRIP effect and thus in the case of a load situation, a reserve in terms of tensile strength and elongation at break having.
- machining operations of the steel mold casting which do not trigger a TRIP effect, can be carried out without departing from the scope of the invention.
- the casting of steel is used as casting material for components used in plant and refrigeration technology, plants and components for the production of gases and liquefaction and fractionation of gases, for applications in vehicle and aircraft construction, for crash-impacted parts, such as crash boxes in motor vehicles Components for Transport of liquid gases and as a component, which is exposed to low temperatures, and / or used as a cast steel foam for foamed parts.
- An inventive component for vehicle or aircraft construction in particular crash box, A, B or C pillar of a motor vehicle, is designed as a steel mold casting as described above.
- the austenitic cast steel has an austenitic structure at room temperature with 5% ⁇ ferrite. Due to the tensile effect triggered TRIP effect tensile strengths of more than 550 MPa and elongation at break of more than 30% can be achieved. At temperatures below room temperature, the cast steel material behaves tough despite increased strength values.
- the steel casting according to the invention has an energy absorption capacity at room temperature of about 0.37 J / mra 3 .
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- 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)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006033973A DE102006033973A1 (en) | 2006-07-20 | 2006-07-20 | Stainless austenitic cast steel and its use |
PCT/EP2007/057473 WO2008009722A1 (en) | 2006-07-20 | 2007-07-19 | Rustproof austenitic cast steel, method for production and use thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2059623A1 true EP2059623A1 (en) | 2009-05-20 |
Family
ID=38562226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07787731A Ceased EP2059623A1 (en) | 2006-07-20 | 2007-07-19 | Rustproof austenitic cast steel, method for production and use thereof |
Country Status (9)
Country | Link |
---|---|
US (1) | US20090324441A1 (en) |
EP (1) | EP2059623A1 (en) |
JP (1) | JP5340148B2 (en) |
KR (1) | KR20090035710A (en) |
CN (1) | CN101490297B (en) |
CA (1) | CA2657747A1 (en) |
DE (1) | DE102006033973A1 (en) |
RU (1) | RU2451763C2 (en) |
WO (1) | WO2008009722A1 (en) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009126954A2 (en) | 2008-04-11 | 2009-10-15 | Questek Innovations Llc | Martensitic stainless steel strengthened by copper-nucleated nitride precipitates |
US10351922B2 (en) * | 2008-04-11 | 2019-07-16 | Questek Innovations Llc | Surface hardenable stainless steels |
DE102009013631B8 (en) * | 2009-03-18 | 2010-12-23 | Burkhard Weiss | Process for low-process production of high-strength, high-quality molded parts made of high-alloy steels with plasticity effect and their use |
EP2455508B1 (en) * | 2009-07-13 | 2016-11-23 | Korea Institute Of Machinery & Materials | High strength / corrosion-resistant,.austenitic stainless steel with carbon - nitrogen complex additive, and method for manufacturing same |
DE102010026808B4 (en) | 2010-07-10 | 2013-02-07 | Technische Universität Bergakademie Freiberg | Corrosion-resistant austenitic phosphorous-alloyed steel casting with TRIP or TWIP properties and its use |
DE112012004621A5 (en) | 2011-11-05 | 2014-08-07 | Technische Universität Bergakademie Freiberg | Process for producing high-strength cast steel components with TRIP / TWIP properties and use of the manufactured components |
DE112013001144A5 (en) | 2012-02-25 | 2014-10-30 | Technische Universität Bergakademie Freiberg | Process for producing high-strength molded parts made of high-carbon and high-manganese austenitic cast steel with TRIP / TWIP properties |
UA111115C2 (en) | 2012-04-02 | 2016-03-25 | Ейкей Стіл Пропертіс, Інк. | cost effective ferritic stainless steel |
CN103526128B (en) * | 2012-07-06 | 2015-12-09 | 江苏耐尔冶电集团有限公司 | The formula of blast furnace throat steel brick |
RU2519337C1 (en) * | 2012-11-20 | 2014-06-10 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) | Corrosion-resistant high-strength steel |
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- 2006-07-20 DE DE102006033973A patent/DE102006033973A1/en not_active Ceased
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- 2007-07-19 CN CN2007800274368A patent/CN101490297B/en not_active Expired - Fee Related
- 2007-07-19 WO PCT/EP2007/057473 patent/WO2008009722A1/en active Application Filing
- 2007-07-19 KR KR1020097003429A patent/KR20090035710A/en not_active Application Discontinuation
- 2007-07-19 RU RU2009105693/02A patent/RU2451763C2/en not_active IP Right Cessation
- 2007-07-19 EP EP07787731A patent/EP2059623A1/en not_active Ceased
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RU2009105693A (en) | 2010-08-27 |
WO2008009722A1 (en) | 2008-01-24 |
RU2451763C2 (en) | 2012-05-27 |
CA2657747A1 (en) | 2008-01-24 |
CN101490297B (en) | 2012-02-01 |
DE102006033973A1 (en) | 2008-01-24 |
JP2009543952A (en) | 2009-12-10 |
KR20090035710A (en) | 2009-04-10 |
US20090324441A1 (en) | 2009-12-31 |
CN101490297A (en) | 2009-07-22 |
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