EP0570072B1 - Procédé d'obtention d'un alliage à base de chrome - Google Patents

Procédé d'obtention d'un alliage à base de chrome Download PDF

Info

Publication number
EP0570072B1
EP0570072B1 EP93201342A EP93201342A EP0570072B1 EP 0570072 B1 EP0570072 B1 EP 0570072B1 EP 93201342 A EP93201342 A EP 93201342A EP 93201342 A EP93201342 A EP 93201342A EP 0570072 B1 EP0570072 B1 EP 0570072B1
Authority
EP
European Patent Office
Prior art keywords
chromium
metals
base alloy
producing
weight
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.)
Expired - Lifetime
Application number
EP93201342A
Other languages
German (de)
English (en)
Other versions
EP0570072A3 (fr
EP0570072A2 (fr
Inventor
Ralf Dr. Eck
Günter Dr. Kneringer
Wolfgang Dr. Köck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plansee SE
Original Assignee
Plansee SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Plansee SE filed Critical Plansee SE
Publication of EP0570072A2 publication Critical patent/EP0570072A2/fr
Publication of EP0570072A3 publication Critical patent/EP0570072A3/fr
Application granted granted Critical
Publication of EP0570072B1 publication Critical patent/EP0570072B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
    • C22C27/06—Alloys based on chromium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/059—Making alloys comprising less than 5% by weight of dispersed reinforcing phases
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0026—Matrix based on Ni, Co, Cr or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2201/00—Treatment under specific atmosphere
    • B22F2201/01—Reducing atmosphere
    • B22F2201/013—Hydrogen

Definitions

  • the invention relates to a powder metallurgical process for producing a chromium-based alloy with a chromium content> 65% by weight, with 0.1 to 32% by weight of one or more of the metals from the group iron, cobalt, nickel with up to 30% by weight of one or more metals from the group aluminum, titanium, zirconium and hafnium, with up to 10% by weight of one or more metals from the group vanadium, niobium, molybdenum, tantalum, tungsten and rhenium, with up to 1% by weight of one or more of the elements carbon, nitrogen, boron and silicon, and with 0.005 to 5% by weight of finely dispersed oxide particles from the group of rare earths.
  • the process includes the steps of powder mixing, powder pressing and sintering.
  • a major disadvantage of pure chromium is the brittleness of the material, which usually begins at around 400 ° C., depending on the forming, so that in practice the use of the material is often only possible due to increased manufacturing and construction costs.
  • DE-OS 16 08 116 describes a chromium alloy which contains up to 45% by weight of iron and / or nickel and / or cobalt and up to a total of 5% by weight of Al, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Y and rare earths and up to 1% by weight of C, N, B and Si.
  • the alloying of iron in particular, but also of nickel and cobalt is said to Oxidation and corrosion resistance increased and the deformability at low temperatures can be improved.
  • the addition of Al, Ti, Zr, Hf, V, Nb, Ta and Y and rare earths is said to significantly reduce the ductile-brittle transition temperature. In fact, the ductile-brittle transition temperature of this alloy is still too high, so that this alloy has no practical significance.
  • DE-OS 21 05 750 relates to a cast body made of a chromium-based alloy, which consists of a single crystal or of directed crystals.
  • the alloy preferably contains 10-35% by weight of iron and / or cobalt and / or nickel and 2-10% by weight of niobium and / or tantalum and / or molybdenum and / or tungsten and / or rhenium and up to 2% by weight on Y and / or rare earths and / or aluminum as well as up to 1% by weight boron and / or carbon and / or nitrogen and / or silicon in conjunction with additives on metals which form boride, carbide, nitride or silicide.
  • This prior publication also describes that this alloy in the monocrystalline state can achieve a ductile-brittle transition temperature which was then lowered by several 100 ° C. and a relatively high notched impact strength at room temperature.
  • this alloy no information can be found in the previous publication.
  • a disadvantage of this alloy is above all that it is no longer mechanically formable as a cast alloy, so that not all workpieces can be produced in any dimensions. In particular, the production of semi-finished products, such as sheets, rods and wire, is not possible.
  • US 3 591 362, US 3 874 938 and DE-AS 23 03 802 generally describe dispersion-strengthened metal alloys which can contain up to 25% by volume of a dispersoid, including oxides of rare earth metals. Chromium contents of the alloy of up to 65% by weight are described in the claims. From the examples and the description, however, it appears that the invention is primarily based on alloys with a significantly lower chromium content, in particular is aimed at ODS superalloys with a chromium content between approximately 10 and 20% by weight. US 3 909 309 describes a method for improving the flexural strength in ODS superalloys. Chromium contents of up to 65% by weight are mentioned in a subclaim.
  • ODS superalloys are primarily used in hot gas turbine construction, where good corrosion resistance to vanadium pentoxide is not so important.
  • the dispersoids are primarily added to increase the strength properties of the alloy.
  • US Pat. No. 3,841,847 shows a chromium-based alloy with at least 70% by weight chromium, which in addition to yttrium, aluminum and silicon can also contain up to 18% by weight yttrium oxide. With this alloy, the transition temperature is still very ductile-brittle, so that the production of semi-finished products and parts by forming processes is problematic.
  • JP-A 2 258 946 describes a two-phase composite material which, in addition to chromium, contains 5 to 50% by weight of Fe and 5 to 60% by weight of Y 2 O 3 .
  • the Y 2 O 3 is not present as a dispersoid in a uniform material matrix.
  • the sintered composite alloy consists of a sintered body that has a uniform mixed structure. The use lies with facilities for steel production.
  • EP-A 0 510 495 describes a chromium alloy with optionally up to 20% by weight of Fe and with 0.2 to 2.0% by weight of finely dispersed particles of Y 2 O 3 .
  • a particle size of up to 0.1 ⁇ m is mandatory and, according to the explanations, this size can only be achieved by means of a long-lasting process, mechanical alloying.
  • the object of the present invention is to provide a method for producing a chromium-based alloy.
  • Chrome alloys manufactured according to this process and a group of chrome alloys to be developed should be characterized by the fact that they have good corrosion resistance, in particular to combustion gases and non-volatile combustion residues of fossil fuels, and at the same time have a ductile-brittle transition temperature which is sufficiently low for forming processes and good heat resistance properties .
  • a chromium-based alloy which fulfills this task, is defined by the dependent claim 9, this alloy, in addition to a chromium content of more than 65% by weight, the usual content of impurities and a number of optionally added elements, from 0.3 to 2 % By weight of La 2 O 3 or a mixture of La and Y oxide and 0.1 to 32% by weight of one or more metals from the group consisting of iron, nickel and cobalt.
  • the addition of rare earth oxides is known for various alloys to increase the heat resistance through dispersion strength.
  • a chromium-based alloy with a chromium content of more than 65% by weight by using lanthanum oxide or a mixture of yttrium oxide and lanthanum oxide as oxides of the rare earths in a proportion of 0.5 to 2% by weight, and of iron and nickel with a share of 5 to 25% by weight, the improved material properties can be achieved according to the task.
  • the addition of these rare earth oxides does not have the desired effect.
  • the upper limit for their addition is 2% by weight, since if the proportions exceed this, the processability of the alloy deteriorates to an unacceptable extent.
  • the alloying elements iron, nickel and cobalt only have a ductile effect on the alloy from a minimum content of 0.1% by weight, while the corrosion properties of the alloy exceed the upper limit of 32% by weight Alloy deteriorate to an extent that such an alloy is practically no longer interesting.
  • the alloys manufactured by the process according to the invention and the alloys according to the invention are particularly suitable as materials for stationary but also moving parts in systems in which temperatures of about 800 to over 1200 ° C. occur and in which contact with gases and residues from the combustion occurs at the same time , in particular fossil fuels and clean or polluted air.
  • the alloys have a high heat resistance and a high recrystallization temperature as well as a coefficient of thermal expansion which, compared to known chrome alloys, is much better adapted to other high-temperature materials, such as ceramics, which further increases the area of application of the alloy according to the invention expanded.
  • the optional alloying of up to 30% by weight of one or more metals from the group aluminum, titanium, zirconium and hafnium primarily improves the oxidation resistance of the alloy.
  • Metals from the group aluminum, titanium and zircon with a proportion of 3 to 10% by weight have proven to be particularly suitable elements.
  • the optional addition of up to 10% by weight of one or more metals from the group of vanadium, niobium, molybdenum, tantalum, tungsten and rhenium increases the dimensional stability at high temperatures in components made from the alloys according to the invention, which is particularly long when they occur Continuous stresses that act on the components is important.
  • the light and ductile metals vanadium and niobium are preferred.
  • the addition of the high-melting metals tungsten and rhenium can reduce the oxidation resistance of the alloy, which is why they are advantageously used only in relatively small amounts.
  • Vanadium, niobium and molybdenum individually or in combination with a total content of 3 to 8% by weight, have proven to be particularly advantageous.
  • the strength is to be increased further for a temperature range above 1000 ° C.
  • These hard phase-forming elements increase the strength without impairing the good corrosion properties of the alloy and without significantly reducing the ductility.
  • the mixture of the starting powder is pressed to a minimum compression density of 65% and the compact is sintered at a sintering temperature between 1500 and 1600 ° C. under an H 2 atmosphere for 15-20 hours.
  • the sintered plates were cut into steel sheet with a thickness of 2 mm on all sides.
  • the forged plates were forged by 35% and cooled from the forging temperature in the furnace to room temperature within 12 hours.
  • the plates were rolled into sheets of 4.5 mm in thickness and cooled from the final roll temperature in the furnace to room temperature within 12 hours.
  • the sheets were heated to 1250 ° C and rolled to a thickness of 2 mm and trimmed the edges.
  • the sheets were again heated to 1250 ° C. and annealed at this temperature for one hour.
  • the sheets were 1.3 mm thick finish rolled and then subjected to final annealing at 1600 ° C for one hour.
  • samples with the dimensions 100 mm ⁇ 100 mm were cut from the sheets produced according to the production example. The samples were then ground on both sides to remove the superficial steel layers to a final thickness of 1 mm.
  • the alloys according to the invention have a corrosion resistance which is improved by up to factor 2 compared to pure chromium.
  • samples with the dimensions 20 mm ⁇ 30 mm were cut from the sheets produced according to the production example. The samples were then ground on both sides to remove the superficial steel layers to a final thickness of 1 mm. After weighing, the samples were oxidized in air once at a temperature of 1000 ° C and once at a temperature of 1200 ° C for a period of 7 days. At 1000 ° C, a well adhering oxide layer formed on the samples, so that the average Weight gain of the samples was used as a measure of the oxidation resistance. At 1000 ° C, the course of the oxidation curve was also determined within an oxidation time of 112 hours, and the rate constant was calculated from this.
  • the samples formed a poorly adhering oxide layer, which was removed by brushing and washing the samples in water, so that the average weight loss of the samples was used as a measure of the resistance to oxidation.
  • Oxidation conditions air at 1200 ° C material Weight loss after 168 hours (g / cm 2 ) Cr 14 Cr - 0.15 Fe - 1 Y 2 O 3 3rd Cr-0.15 Fe - 1 La 2 O 3 6 Cr - 24 Fe - 5 Al - 1 Y 2 O 3 2nd

Claims (10)

  1. Procédé de métallurgie des poudres, comprenant les étapes consistant à mélanger les poudres, comprimer les poudres et les fritter, destiné à la fabrication d'un alliage à base de chrome comportant
    une teneur en chrome > 65 % en poids,
    0,1 à 32 % en poids d'un ou plusieurs des métaux du groupe formé par le fer, le nickel et le cobalt,
    jusqu'à 30 % en poids d'un ou plusieurs des métaux du groupe formé par l'aluminium, le titane, le zirconium et l'hafnium,
    jusqu'à 10 % en poids d'un ou plusieurs métaux du groupe formé par le vanadium, le niobium, le molybdène, le tantale, le tungstène et le rhénium,
    jusqu'à 1 % en poids d'un ou plusieurs des éléments suivants: carbone, azote, bore et silicium,
    ainsi que 0,005 à 5 % en poids de particules d'oxydes du groupe des terres rares réparties de façon finement dispersée dans l'alliage,
       caractérisé en ce que l'alliage fritté est enrobé dans une tôle métallique et est déformé à chaud en plusieurs cycles successifs de procédé, un cycle se composant d'un échauffement à une température comprise dans la zone de 1200°C, d'une déformation à chaud à un degré de déformation > 35 %, et d'un refroidissement à la température ambiante.
  2. Procédé de métallurgie de poudres destiné à la fabrication d'un alliage à base de chrome selon la revendication 1, caractérisé en ce que la compression des poudres est effectuée à une densité minimale de 60 % après compression et le frittage est effectué pendant 15 à 20 heures sous une atmosphère de H2 à une température de frittage comprise entre 1500 et 1600 °C.
  3. Procédé de métallurgie de poudres destiné à la fabrication d'un alliage à base de chrome selon la revendication 1, caractérisé en ce que des particules de Y2O3 sont utilisées comme particules d'oxyde réparties de façon finement dispersée.
  4. Procédé de métallurgie de poudres destiné à la fabrication d'un alliage à base de chrome selon la revendication 1, caractérisé en ce que 5 à 25 % en poids d'un ou plusieurs des métaux du groupe formé par le fer et le nickel sont utilisés à cet effet.
  5. Procédé de métallurgie de poudres destiné à la fabrication d'un alliage à base de chrome selon la revendication 1, caractérisé en ce que 3 à 10 % en poids d'un ou plusieurs des métaux du groupe formé par l'aluminium, le titane et le zirconium sont utilisés à cet effet.
  6. Procédé de métallurgie de poudres destiné à la fabrication d'un alliage à base de chrome selon la revendication 1, caractérisé en ce que 3 à 8 % en poids d'un ou plusieurs des métaux du groupe formé par le vanadium, le niobium et le molybdène sont utilisés à cet effet.
  7. Procédé de métallurgie de poudres destine à la fabrication d'un alliage à base de chrome selon la revendication 1, caractérisé en ce que 0,03 à 0,3 % en poids d'un ou plusieurs des elements du groupe formé par le carbone et l'azote sont utilisés à cet effet.
  8. Procédé de métallurgie de poudres destiné à la fabrication d'un alliage à base de chrome selon la revendication 1, caractérisé en ce que 24 % en poids de fer, 5 % en poids d'aluminium, 1 % en poids d'oxyde d'yttrium, le reste étant du chrome sont utilises à cet effet.
  9. Alliage à base de chrome à teneur en chrome supérieure à 65 % en poids, qui est constitué, en plus des impuretés habituelles, de la composition suivante:
    0,3 à 2 % en poids d'un oxyde de lanthane ou d'un mélange d'oxyde de lanthane et d'yttrium,
    0,1 à 32 % en poids d'un ou plusieurs des métaux du groupe formé par le fer, le nickel et le cobalt,
    jusqu'à 30 % en poids d'un ou plusieurs des métaux du groupe formé par l'aluminium, le titane, le zirconium et l'hafnium,
    jusqu'à 10 % en poids d'un ou plusieurs métaux du groupe formé par le vanadium, le niobium, le molybdène, le tantale, le tungstène et le rhénium,
    jusqu'à 1 % en poids d'un ou plusieurs des éléments suivants: carbone, azote, bore et silicium, le reste étant du chrome.
  10. Alliage à base de chrome selon la revendication 9, caractérisé en ce qu'il contient de 5 à 25 % en poids d'un ou plusieurs des métaux du groupe formé par le fer et le nickel.
EP93201342A 1992-05-14 1993-05-10 Procédé d'obtention d'un alliage à base de chrome Expired - Lifetime EP0570072B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT981/92 1992-05-14
AT0098192A AT399165B (de) 1992-05-14 1992-05-14 Legierung auf chrombasis

Publications (3)

Publication Number Publication Date
EP0570072A2 EP0570072A2 (fr) 1993-11-18
EP0570072A3 EP0570072A3 (fr) 1994-01-12
EP0570072B1 true EP0570072B1 (fr) 1996-07-31

Family

ID=3504219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93201342A Expired - Lifetime EP0570072B1 (fr) 1992-05-14 1993-05-10 Procédé d'obtention d'un alliage à base de chrome

Country Status (7)

Country Link
US (1) US5608174A (fr)
EP (1) EP0570072B1 (fr)
JP (1) JPH0633180A (fr)
AT (2) AT399165B (fr)
AU (1) AU681577B2 (fr)
DE (1) DE59303350D1 (fr)
ES (1) ES2090843T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013214464A1 (de) * 2013-07-24 2015-01-29 Johannes Eyl Verfahren zum Herstellen einer chromhaltigen Legierung und chromhaltige Legierung

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19546614C2 (de) * 1995-12-13 1998-12-17 Forschungszentrum Juelich Gmbh Oxidationsbeständige, chromoxidbildende Legierung
AT4737U1 (de) * 2001-01-15 2001-11-26 Plansee Ag Pulvermetallurgisches verfahren zur herstellung hochdichter formteile
US6692586B2 (en) 2001-05-23 2004-02-17 Rolls-Royce Corporation High temperature melting braze materials for bonding niobium based alloys
DE10340132B4 (de) * 2003-08-28 2010-07-29 Eads Deutschland Gmbh Oxidationsbeständige, duktile CrRe-Legierung, insbesondere für Hochtemperaturanwendungen, sowie entsprechender CrRe-Werkstoff
US20090068055A1 (en) * 2007-09-07 2009-03-12 Bloom Energy Corporation Processing of powders of a refractory metal based alloy for high densification
AT11555U1 (de) 2009-03-12 2010-12-15 Plansee Se Interkonnektor einer festelektrolyt-hochtemperatur-brennstoffzelle
CN104419858A (zh) * 2013-08-20 2015-03-18 东睦新材料集团股份有限公司 一种铬基合金及其制造方法
CN104419856A (zh) * 2013-08-20 2015-03-18 东睦新材料集团股份有限公司 一种铬基合金及其制造方法
CN104419857A (zh) * 2013-08-20 2015-03-18 东睦新材料集团股份有限公司 一种铬基合金及其制造方法
KR101691916B1 (ko) * 2014-10-20 2017-01-04 한국원자력연구원 내식성이 우수한 크롬-알루미늄 이원계 합금 및 이의 제조방법
CN113430398B (zh) * 2021-05-17 2022-11-01 攀钢集团攀枝花钢铁研究院有限公司 一种含有钒元素的JCr98级金属铬及其制备方法
CN114032349B (zh) * 2021-11-17 2022-08-12 齐鲁工业大学 一种高铬铸铁用变质剂及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299027B1 (fr) * 1987-01-28 1991-10-02 Metallwerk Plansee Gesellschaft M.B.H. Alliage de metaux refractaires resistant au fluage et son procede de production

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017265A (en) * 1959-09-25 1962-01-16 Gen Electric Oxidation resistant iron-chromium alloy
US3027252A (en) * 1959-09-29 1962-03-27 Gen Electric Oxidation resistant iron-chromium alloy
US3174853A (en) * 1962-03-15 1965-03-23 Gen Electric Chromium base alloys
US3138457A (en) * 1963-02-11 1964-06-23 Commw Of Australia Chromium-tungsten-tantalum alloys
US3227548A (en) * 1963-02-18 1966-01-04 Gen Electric Chromium base alloy
US3347667A (en) * 1964-05-21 1967-10-17 Gen Electric Chromium base alloy
DE1608116A1 (de) * 1967-12-14 1970-12-10 Schmid Geb Reiniger Dipl Ing S Legierungen auf Chrombasis fuer Elektroden,insbesondere Zuendkerzenelektroden
US3591362A (en) * 1968-03-01 1971-07-06 Int Nickel Co Composite metal powder
US3787202A (en) * 1970-11-18 1974-01-22 Cyclops Corp High temperature chromium-nickel alloy
DE2105750C3 (de) * 1971-02-08 1975-04-24 Battelle-Institut E.V., 6000 Frankfurt Verwendung einer Chrombasislegierung zur Herstellung von Feingußoder FormguBkörhern
US3874938A (en) * 1971-04-06 1975-04-01 Int Nickel Co Hot working of dispersion-strengthened heat resistant alloys and the product thereof
DE2221220C3 (de) * 1971-05-12 1974-01-17 Gebrueder Sulzer Ag, Winterthur (Schweiz) Verwendung einer Chrom-Basis-Legierung als Kokillenwerkstoff
BE794801A (fr) * 1972-01-31 1973-07-31 Int Nickel Ltd Procede de recuit en zones d'alliages
US3999985A (en) * 1972-09-15 1976-12-28 The British Non-Ferrous Metals Research Association Chromium alloys
US3841847A (en) * 1972-09-15 1974-10-15 British Non Ferrous Metals Res Chromium alloys containing y{11 o{11 {11 and aluminium or silicon or both
US3909309A (en) * 1973-09-11 1975-09-30 Int Nickel Co Post working of mechanically alloyed products
JPS5855502A (ja) * 1981-09-28 1983-04-01 Toyo Soda Mfg Co Ltd 金属クロム板の製造法
JPH0832942B2 (ja) * 1989-03-30 1996-03-29 株式会社クボタ 複合焼結合金、耐熱部材および加熱炉内鋼材支持部材
US5126106A (en) * 1990-05-22 1992-06-30 Tosoh Corporation Chromium-based weld material and rolled article and process for producing the rolled article
JPH0747793B2 (ja) * 1991-04-26 1995-05-24 株式会社クボタ 酸化物分散強化耐熱焼結合金

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299027B1 (fr) * 1987-01-28 1991-10-02 Metallwerk Plansee Gesellschaft M.B.H. Alliage de metaux refractaires resistant au fluage et son procede de production

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Week 9048, Derwent Publications Ltd., London, GB; AN 90-358316 & JP-A-2 258 946 (KUBOTA CORPORATION) 19.Oktober 1990 * Zusammenfassung* * Beispiel 2 * *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013214464A1 (de) * 2013-07-24 2015-01-29 Johannes Eyl Verfahren zum Herstellen einer chromhaltigen Legierung und chromhaltige Legierung
DE102013214464A9 (de) * 2013-07-24 2015-05-21 Johannes Eyl Verfahren zum Herstellen einer chromhaltigen Legierung und chromhaltige Legierung

Also Published As

Publication number Publication date
ATE140981T1 (de) 1996-08-15
ATA98192A (de) 1994-08-15
EP0570072A3 (fr) 1994-01-12
AT399165B (de) 1995-03-27
AU3864393A (en) 1993-11-18
DE59303350D1 (de) 1996-09-05
JPH0633180A (ja) 1994-02-08
US5608174A (en) 1997-03-04
EP0570072A2 (fr) 1993-11-18
ES2090843T3 (es) 1996-10-16
AU681577B2 (en) 1997-09-04

Similar Documents

Publication Publication Date Title
DE69628786T2 (de) Eisenaluminid für elektrische Widerstandsheizelemente
EP0455005B1 (fr) Alliage réfractaire pour organes de machine, basé sur l'aluminiure de titane dopé
EP0513407B1 (fr) Procédé de fabrication d' une aube de turbine
EP2855723B1 (fr) Alliage nickel-chrome-aluminium avec bonne formabilité, la résistance au fluage et à la corrosion
EP2855724B1 (fr) Alliage nickel-chrome avec bonne formabilité, la résistance au fluage et à la corrosion
DE3029658C2 (fr)
EP0570072B1 (fr) Procédé d'obtention d'un alliage à base de chrome
DE3926289A1 (de) Gegenstand aus einer gegenueber dem wachstum von ermuedungsrissen bestaendigen nickelbasis-legierung, legierung und verfahren zur herstellung
DE2445462B2 (de) Verwendung einer Nickellegierung
DE102020116868A1 (de) Pulver aus einer Nickel-Kobaltlegierung, sowie Verfahren zur Herstellung des Pulvers
DE19756354B4 (de) Schaufel und Verfahren zur Herstellung der Schaufel
DE102018107248A1 (de) Verwendung einer nickel-chrom-eisen-aluminium-legierung
EP1017867B1 (fr) Alliage a base d'aluminium et procede permettant de le soumettre a un traitement thermique
EP0574727A1 (fr) Méthode de production d'un élément réfractaire à partir de deux matériaux différents
EP0396185B1 (fr) Procédé pour la préparation d'outils semi-finis résistant au fluage en métal réfractaire
DE2421680A1 (de) Nickel-kobalt-eisen-gusslegierung mit niedrigem ausdehnungskoeffizienten und hoher streckgrenze
DE2049546C3 (de) Verfahren zur pulvermetallurgischen Herstellung eines dispersionsverfestigten Legierungskörpers
DE2324937A1 (de) Aushaertbare dispersionsverfestigte nickel-eisen-chrom-legierung
DE1922314A1 (de) Verfahren zur Verguetung von Legierungen
EP0709478B1 (fr) Alliage à base de siliciures, contenant du chrome et du molybdène
EP1647606A1 (fr) Alliage de nickel résistant à l'usure et a dureté élevée, et son utilisation comme un outil à haute température
DE3736350C2 (fr)
DE2539002B2 (de) Verwendung von legierungen zur herstellung von magnetkoepfen
DE3720605C2 (fr)
EP0172852A1 (fr) Alliage a base de molybdene resistant a haute temperature.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19931201

17Q First examination report despatched

Effective date: 19940210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PLANSEE AKTIENGESELLSCHAFT

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 140981

Country of ref document: AT

Date of ref document: 19960815

Kind code of ref document: T

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C. S.R.L.

REF Corresponds to:

Ref document number: 59303350

Country of ref document: DE

Date of ref document: 19960905

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960904

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2090843

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2090843

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20120523

Year of fee payment: 20

Ref country code: DE

Payment date: 20120523

Year of fee payment: 20

Ref country code: NL

Payment date: 20120531

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20120524

Year of fee payment: 20

Ref country code: GB

Payment date: 20120522

Year of fee payment: 20

Ref country code: FR

Payment date: 20120601

Year of fee payment: 20

Ref country code: SE

Payment date: 20120522

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20120529

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20120525

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20120511

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59303350

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: V4

Effective date: 20130510

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20130509

BE20 Be: patent expired

Owner name: *PLANSEE A.G.

Effective date: 20130510

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 140981

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130510

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130509

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130511

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20130802

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130511