Classifications

• • 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
  • C22C1/0433—Nickel- or cobalt-based alloys
• • 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
  • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
  • B22F10/20—Direct sintering or melting
  • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B33—ADDITIVE MANUFACTURING TECHNOLOGY
  • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
  • B33Y10/00—Processes of additive manufacturing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B33—ADDITIVE MANUFACTURING TECHNOLOGY
  • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
  • B33Y70/00—Materials specially adapted for additive manufacturing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B33—ADDITIVE MANUFACTURING TECHNOLOGY
  • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
  • B33Y80/00—Products made by additive manufacturing
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C19/00—Alloys based on nickel or cobalt
  • C22C19/03—Alloys based on nickel or cobalt based on nickel
  • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
  • C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C19/00—Alloys based on nickel or cobalt
  • C22C19/03—Alloys based on nickel or cobalt based on nickel
  • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
  • C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
  • C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C19/00—Alloys based on nickel or cobalt
  • C22C19/03—Alloys based on nickel or cobalt based on nickel
  • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
  • C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
  • C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
• • 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
  • B22F2301/00—Metallic composition of the powder or its coating
  • B22F2301/15—Nickel or cobalt
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P10/00—Technologies related to metal processing
  • Y02P10/25—Process efficiency

Definitions

• Nickel-based alloy powder, process and component
• the invention relates to a nickel-based alloy according to patent claim 1, a powder according to patent claim 7, as well as a method according to patent claim 9 and a component according to patent claim 12.
• Nickel-based alloys have high corrosion resistance and high temperature resistance, in particular high creep resistance at high temperatures. Alloys with the latter properties are also referred to as so-called nickel-based superalloys. These alloys are used in particular in engine construction or in turbines for generating energy. As a rule, the components, which consist of the nickel-based alloys described, are manufactured using a casting process or a sintering process. An example of a corresponding alloy is given in DE 102017 007 106 B4.
• the object is achieved in a nickel-based alloy according to claim 1, as well as in a powder according to claim 7, in a method according to claim 9 and in a component according to claim 12.
• the nickel-based alloy according to the invention has at least the following alloy elements in% by weight:
• Co Co
• Cr Chromium
• Hf hafnium
• Ta tantalum
• Mo molybdenum
• the present alloy differs in particular in that the proportion of hafnium has been increased to the extent that it is now between 1.8 and 2.2 percent by weight.
• the tendency of the alloy to solidify was thereby noticeably reduced or completely prevented by adapting the process parameters.
• the targeted increase in the proportion of hafnium also improves the mechanical properties by increasing the proportion of so-called g 'phases in contrast to alloys with a lower proportion of hafnium.
• the proportion of tantalum is also in a slightly higher range than in the prior art.
• the respective proportion of the alloying elements is specified again in a narrower percentage range and include at least the following:
• Co Co
• Cr chromium
• W tungsten
• Al aluminum
• Al 5.35 - 5.45
• Mo molybdenum
• alloy compositions described so far are formulated in such a way that, in addition to the impurities, other constituents can also be present to a small extent. It has been found to be advantageous to choose a carbon content that is between 0.04 and 0.08 in percent by weight.
• the alloy comprises boron and / or zirconium in small components, which are preferably between 0.0025 and 0.01 percent by weight.
• the proportions of other alloy components of subordinate importance that can also be viewed as impurities should each be less than 0 , 1% by weight. In particular less than 0.05% by weight, preferably less than 0.02% by weight in the case of silicon.
• Another component of the invention is a powder which comprises an alloy according to any one of claims 1-6.
• the term “comprises” means that this powder consists essentially of the said alloy, that it but can also contain additives that have a positive effect on an additive manufacturing process. These can be specific binders or release agents. This means that both the alloy itself and the powder resulting from it can be used, in particular, for the production of components with an additive manufacturing process.
• a method for producing a component is also part of the invention, which is carried out using an alloy according to claims 1-6 or a powder according to claims 7 or 8.
• the process is preferably an additive manufacturing process, in particular a laser sintering process or a selective laser melting process, e.g. B. LPBF.
• Another component of the invention consists in a construction part which comprises an alloy according to one of claims 1-6 or a powder according to one of claims 7 or 8, the component being made of this alloy, neglecting minor additives.
• the term component here is also to be understood as a semi-finished product that can be integrated into a further component through further process steps and thus can then also have further material components in the final assembly state.
• the alloy is particularly advantageous to use the alloy, the powder of the process and thus also the component in turbines which are used to generate electrical power.
• the invention can also be used in turbines that are used to drive means of transport, in particular also in aircraft turbines.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Mechanical Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Manufacturing & Machinery (AREA)
• Physics & Mathematics (AREA)
• Plasma & Fusion (AREA)
• Powder Metallurgy (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=76662451

Family Applications (1)

Country Status (5)

Family Cites Families (8)

• 2020
  • 2020-06-25 DE DE102020207910.2A patent/DE102020207910A1/de not_active Withdrawn
• 2021
  • 2021-06-17 WO PCT/EP2021/066388 patent/WO2021259750A1/de unknown
  • 2021-06-17 US US18/009,417 patent/US20230220518A1/en active Pending
  • 2021-06-17 EP EP21735609.6A patent/EP4126425A1/de active Pending
  • 2021-06-17 CN CN202180044577.0A patent/CN115943006A/zh active Pending

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