EP4291408A1 - Alliage, poudre, procédé et composant - Google Patents

Alliage, poudre, procédé et composant

Info

Publication number
EP4291408A1
EP4291408A1 EP22722461.5A EP22722461A EP4291408A1 EP 4291408 A1 EP4291408 A1 EP 4291408A1 EP 22722461 A EP22722461 A EP 22722461A EP 4291408 A1 EP4291408 A1 EP 4291408A1
Authority
EP
European Patent Office
Prior art keywords
nickel
weight
tungsten
titanium
cobalt
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.)
Pending
Application number
EP22722461.5A
Other languages
German (de)
English (en)
Inventor
Timo DEPKA
Phillip DRAA
Birgit Grüger
Anna Kapustina
Oliver Lüsebrink
Kirtan PATEL
Raymond G. Snider
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens Energy Global GmbH and Co KG
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 Siemens Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Publication of EP4291408A1 publication Critical patent/EP4291408A1/fr
Pending 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/009—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine components other than turbine blades
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/04—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine blades

Definitions

  • the invention relates to an alloy, a powder, a method for production using the alloy or the powder, and a component made from them.
  • Nickel-based superalloys are known as materials for high-temperature applications such as heat shields in gas turbines in combustion chambers or for turbine blades in the hot gas path. These super alloys must be resistant to oxidation at high temperatures and have high mechanical strength. In order to increase efficiency, it is advantageous that the weight is kept as low as possible, particularly in the case of rotating components such as turbine blades. It is the object of the invention to solve the above problem. The object is achieved by an alloy according to claim 1, a powder according to claim 2, a method according to claim 3 and a component according to claim 4.
  • the invention uses an improvement in the chemical composition of nickel-based superalloys in terms of improving the specific mechanical properties - by adapting suitable elements, while maintaining crack-free workability and productivity.
  • the invention is described below only by way of example.
  • the function of each element included in the high heat-resistant nickel-based alloy for carrying out the invention described above will now be described.
  • Carbon (C) is added, which, in addition to its function as a deoxidizing element, has other functions of combining with titanium (Ti), niobium (Nb), and tantalum (Ta) to form stable MC-type primary carbides to improve coarsening to suppress formation of austenitic grains during hot deformation and to improve hot lubricity.
  • the desired effect of the carbon (C) is obtained by adding an amount of at least 0.07%, but its addition of more than 0.09% forms the chain structure of the MC-type carbide and causes the generation of hot cracking emanating from this part, reducing tool life. Accordingly, carbon (C) is added in an amount of 0.07% to 0.09% by weight, preferably 0.08% by weight.
  • Chromium (Cr) forms an oxide layer with a highly tight adhesion to the surface during high temperature heating and improves oxidation resistance. In addition, chromium (Cr) can also improve hot workability.
  • the amount of chromium (Cr) ranges above 9.0% by weight but not more than 10% by weight, more preferably 9.5% by weight.
  • Tungsten (W) is an additional element that essentially strengthens the austenitic solid solution up to high temperatures. In order to obtain these effects, tungsten (W) is to be added in an amount of at least 3.0% by weight, but its excessive addition more than 3.4% by weight causes the excessive precipitation of ⁇ -W and a Decreasing both oxidation resistance and tight adhesion of an oxide film.
  • the amount of tungsten (W) is particularly preferably in the range of 3.2% by weight.
  • Molybdenum (Mo) is an element of the same group as tungsten (W), and therefore replacing part of tungsten (W) with molybdenum (Mo) can provide the same function as that of tungsten (W). However, since its effect is lower than that of tungsten (W), molybdenum (Mo) is added in a range of 1.3 wt% to 1.7 wt%, particularly at 1.5 wt%. %.
  • Aluminum (Al) is an additive element essential for forming a stable ⁇ ′ phase after tempering treatment and should be added in an amount of at least 5.0% by weight.
  • titanium (Ti) is in a range of 5.6% to 6.3% by weight, preferably 5.9% by weight.
  • a part of titanium (Ti) is combined with carbon (C) to form a stable MC-type primary carbide and has a strength-enhancing function in non- ⁇ ′-hardened alloys.
  • the balance of titanium (Ti) is in the ⁇ ′ phase in the solid-solution state, thereby strengthening the ⁇ ′ phase, and serves to improve high-temperature strength.
  • titanium (Ti) must be added in an amount of at least 1.5 wt%, but its excessive addition exceeding 3.0 wt% not only lowers the hot workability but also makes the ⁇ ′ phase unstable and causes decreases in strength after long-term use at high temperatures. Accordingly, titanium (Ti) is also preferably in the range of 1.9 wt% to 2.3 wt%. Furthermore, aluminum (Al), tantalum (Ta) and titanium (Ti) also have an important function of improving the resistance to oxidation, especially in the combination of the elements they form stable oxide layer systems.
  • niobium (Nb) and tantalum (Ta) Similar to titanium (Ti), a portion of both niobium (Nb) and tantalum (Ta) is stabilized with carbon (C) to form ler MC-type primary carbides, and they have a strength-increasing function, especially for non- ⁇ ′-hardened alloys.
  • C carbon
  • the balance of both niobium (Nb) and tantalum (Ta) is dissolved in the ⁇ ′ phase, thereby strengthening the ⁇ ′ phase solid solution, and serves to improve high-temperature strength. Accordingly, niobium (Nb) and tantalum (Ta) can be added as needed.
  • niobium (Nb) is in a range of 0.8% by weight to 1.0% by weight at the minimum.
  • Zirconium (Zr) and boron (B) are effective for improving high-temperature strength and ductility by their grain boundary active function, and at least one of them can be added in an appropriate amount to the alloy of the invention. Their effect is maintained with a small additional amount. Amounts of zirconium (Zr) and boron (B) in excess of 0.01 wt% lower the solidus temperature upon heating, thereby deteriorating hot workability. Accordingly, the upper limits of zirconium (Zr) and boron (B) are 0.010% by weight and 0.010% by weight, respectively.
  • Hafnium (Hf) reduces the susceptibility to hot cracking during casting and improves ductility, especially in DS materials with transverse columnar grains. In addition, hafnium (Hf) improves oxidation resistance. On the other hand, hafnium (Hf) lowers the melting temperature and, due to its high reactivity, can lead to reactions with the shell mold during casting. Hafnium (Hf) is therefore used with a maximum concentration of 1.5% by weight.
  • Nickel (Ni) forms a stable austenitic phase and becomes a matrix for both solid solution and ⁇ ′-phase precipitation.
  • Co cobalt
  • the nickel-based alloy therefore has, in particular consisting of (in % by weight): Carbon (C): 0.07%-0.09%, in particular 0.08%-0.09%, very particularly 0.08 %, chromium (Cr): 9.0% - 10.0%, especially 9.3% - 9.7%, very especially 9.5%, cobalt (Co): 9.7% - 10.5%, especially 10.0%, molybdenum (Mo): 1.2% - 1.8%, especially 1.5%, tungsten (W): 2.8% - 3.6%, especially 3.2%, titanium ( Ti): 1.7% - 2.5%, especially 2.1%, Aluminum (Al): 5.6% - 6.3%, especially 5.9%, Boron (B): 0.008% - 0.012%, especially 0.01%, zirconium (Zr): 0.01% -

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)

Abstract

L'invention concerne un alliage à base de nickel, comprenant les éléments suivants, notamment composé des éléments suivants, en % en poids : carbone (C) : 0,07 - 0,09 %, en particulier 0,08 % – 0,09 %, en particulier notamment 0,08 %, chrome (Cr) : 9,0 % - 10,0 %, en particulier 9,3 % à 9,7 %, en particulier notamment 9,5 %, cobalt (Co) : 9,6 % - 10,4 %, en particulier 10,0 %, molybdène (Mo) : 1,3 % - 1,7 %, en particulier 1,5 %, tungstène (W) : 3,0 % – 3,4 %, en particulier 3,2 %, titane (Ti) : 1,9 % - 2,3 %, en particulier 2,1 %, aluminium (Al) : 5,6 % - 6,3 %, en particulier 5,9 %, bore (B) : 0,008 % – 0,012 %, en particulier 0,01 %, zirconium (Zr) : 0,01 % – 0,012 %, tantale (Ta) : 1,0 % – 1,4 %, en particulier 1,2 %, niobium (Nb) : 0,8 % – 1,0 %, en particulier 0,9 %, silicium (Si) : jusqu'à 0,011 %, vanadium (V) : 0,8 % - 1,0 %, en particulier 0,9 %, hafnium (Hf) : 1,2 % - 1,4 %, en particulier 1,3 %, pas de rhénium (Re) et/ou pas de ruthénium (Ru), nickel (Ni), en particulier le reste de nickel (Ni), les impuretés résiduelles pouvant atteindre 0,1 %.
EP22722461.5A 2021-05-11 2022-04-12 Alliage, poudre, procédé et composant Pending EP4291408A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021204746.7A DE102021204746A1 (de) 2021-05-11 2021-05-11 Legierung, Pulver, Verfahren und Bauteil
PCT/EP2022/059718 WO2022238072A1 (fr) 2021-05-11 2022-04-12 Alliage, poudre, procédé et composant

Publications (1)

Publication Number Publication Date
EP4291408A1 true EP4291408A1 (fr) 2023-12-20

Family

ID=81598012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22722461.5A Pending EP4291408A1 (fr) 2021-05-11 2022-04-12 Alliage, poudre, procédé et composant

Country Status (5)

Country Link
EP (1) EP4291408A1 (fr)
KR (1) KR20240005035A (fr)
CN (1) CN117295612A (fr)
DE (1) DE102021204746A1 (fr)
WO (1) WO2022238072A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002167636A (ja) * 2000-10-30 2002-06-11 United Technol Corp <Utc> 接合被覆なしに断熱被覆を保持できる低密度耐酸化性超合金材料
CN111868287A (zh) * 2018-03-06 2020-10-30 日立金属株式会社 Ni基超耐热合金的制造方法以及Ni基超耐热合金

Also Published As

Publication number Publication date
WO2022238072A1 (fr) 2022-11-17
KR20240005035A (ko) 2024-01-11
DE102021204746A1 (de) 2022-11-17
CN117295612A (zh) 2023-12-26

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