Nickel-based superalloy and parts made from said superalloy

The object of the invention is a nickel-based superalloy of the following composition, the contents of the various elements being expressed as weight percentages: 1.3%<=Al<=2.8%; trace mount<=Co<=11%; 14%<=Cr<=17%; trace mount<=Fe<=12%; 2%<=Mo<=5%; 0.5%<=Nb+Ta<=2.5%; 2.5%<=Ti<=4.5%; 1%<=W<=4%; 0.0030%<=B<=0.030%; trace mount<=C<=0.1%; 0.01%<=Zr<=0.06%; the remainder consisting of nickel and impurities resulting from the production, and such that composition satisfies the following equations wherein the contents are expressed as atomic percentages: 8<=Al at%+Ti at%+Nb at%+Ta at%<=11; 0.7<=(Ti at%+Nb at%+Ta at%)/Al at%<=1.3.

METHOD FOR PRODUCING A PART MADE FROM A SUPERALLOY BASED ON NICKEL AND CORRESPONDING PART

A method for manufacturing a blank part in Ni-base superalloy, wherein an alloy is prepared and heat treatments are conducted characterized in that: the said superalloy contains at least a total of 2.5% of Nb and Ta; heat treatment is conducted comprising a plurality of steps: a first step at between 850 and 1000° C. held for at least 20 minutes to precipitate the δ phase at the grain boundaries; a second step held at a temperature higher than the temperature of the first step allowing partial dissolution of the δ phase obtained at the first step; ageing treatment comprising a third step and optionally one or more additional steps at a temperature below the temperature of the first step and allowing precipitation of the hardening phases γ′ and γ″. Part thus obtained. 1. A method for manufacturing a blank of a part in Ni-base superalloy comprising at least 50 Ni in weight percent , comprising:preparing an alloy of said superalloy, and said superalloy in weight percentage comprises at least a total of 2.5% Nb and Ta;', in a first step, during said alloy is held at between 850 and 1000° C. for at least 20 minutes, precipitating a δ phase at grain boundaries;', 'in a second step, during said alloy is held at a temperature higher than the temperature of the first step, allowing partial dissolution of the δ phase obtained at the first step, and after the second step to obtain a δ phase quantity of between 2 and 4%, the first and second step being conducted without intermediate cooling; and', 'in ageing treatment comprising a third step and optionally one or more additional steps conducted at a temperature lower than that of the first step, allowing precipitation of γ′ and/or γ″ hardening phases;, 'heat treatment is applied to said alloy, comprising a plurality of steps distributed as follows, 'the first step being conducted between 900 and 1000° C. for at least 30 min, and the second step at between 940 and 1020° C. for 5 to 90 min, the difference in temperature between ...

Nickel-based superalloy and parts made from said superalloy

A nickel superalloy has the following composition, the concentrations of the different elements being expressed as wt-%: Formula (I), the remainder consisting of nickel and impurities resulting from the production of the superalloy. In addition, the composition satisfies the following equation, wherein the concentrations of the different elements are expressed as atomic percent: Formula (II).

Precipitation hardening nickel-base alloy, part made of said alloy, and manufacturing method thereof

A precipitation hardened nickel-base alloy, characterized in that its composition is, in weight percentages: 18%≦Cr≦22%, preferably 18%≦Cr≦20%; 18%≦Co≦22%, preferably 19%≦Co≦21%; 4%≦Mo+W≦8%, preferably 5.5%≦Mo+W≦7.5%; trace amounts≦Zr≦0.06%; trace amounts≦B≦0.03%. preferably trace amounts≦B≦0.01%; trace amounts≦C≦0.1%, preferably trace amounts≦C≦0.06%; trace amounts≦Fe≦1%; trace amounts≦Nb≦0.01%; trace amounts≦Ta≦0.01%; trace amounts≦S≦0.008%; trace amounts≦P≦0.015%; trace amounts≦Mn≦0.3%; trace amounts≦Si≦0.15%; trace amounts≦O≦0.0025%; trace amounts≦N≦0.0030%; the remainder being nickel and impurities resulting from the elaboration, the Al and Ti contents further satisfying the conditions: Ti/Al≦3;  (1) Al+1.2 Ti≧2%;  (2) (0.2 Al−1.25) 2 −0.5 Ti≧0%;  (3) Ti+1.5 Al≦4.5%.  (4) Part made in this alloy and its manufacturing method.

NICKEL-BASED SUPERALLOY AND PARTS MADE FROM SAID SUPERALLOY

A nickel superalloy has the following composition, the concentrations of the different elements being expressed as wt-%: Formula (I), the remainder consisting of nickel and impurities resulting from the production of the superalloy. In addition, the composition satisfies the following equation, wherein the concentrations of the different elements are expressed as atomic percent: Formula (II). 1. A process for the preparation of a part comprising manufacturing a part from a nickel-based superalloy of the following composition , the contents of the various elements being expressed as weight percentages:1.3%≤Al≤2.8%;trace amounts≤Co≤11%;14%≤Cr≤17%;trace amounts≤Fe≤12%;2%≤Mo≤5%;0.5%≤Nb+Ta≤2.5%;2.5%≤Ti≤4.5%;1%≤W≤4%;0.0030%≤B≤0.030%;trace amounts≤C≤0.1%;0.01%≤Zr≤0.06%;the remainder consisting of nickel and impurities resulting from the production, [{'br': None, '8 Al at %+Ti at %+Nb at %+Ta at %≤11'}, {'br': None, '0.7≤(Ti at %+Nb at %+Ta at %)/Al % at %≤1.3'}], 'and such that the composition satisfies the following equations wherein the contents are expressed as atomic percentages2. The process according to claim 1 , wherein the composition of the nickel-based superalloy satisfies the following equation wherein the contents are expressed as atomic percentages:{'br': None, '1≤(Ti at %+Nb at %+Ta at %)/Al at %≤1.3'}3. The process according to claim 1 , wherein the nickel-based superalloy contains between 3.6 and 12% of Fe claim 1 , as weight percentages.4. The process according to claim 1 , wherein the composition of the nickel-based superalloy is claim 1 , expressed as weight percentages:1.3≤Al≤2.8%;7%≤Co≤11%;14%≤Cr≤17%;3.6%≤Fe≤9%;2%≤Mo≤5%;0.5%≤Nb+Ta≤2.5%;2.5%≤Ti≤4.5%;1%≤W≤4%;0.0030%≤B≤0.030%;trace amounts≤C≤0.1%;0.01%≤Zr≤0.06%; [{'br': None, '8≤Al at %+Ti at %+Nb at %+Ta at %≤11'}, {'br': None, '0.7≤(Ti at %+Nb at %+Ta at %)/Al at %≤1.3'}], 'and said composition satisfies the following equations wherein the contents are expressed as atomic percentagesthe remainder ...

NICKEL-BASED SUPERALLOY AND PARTS MADE FROM SAID SUPERALLOY

A nickel superalloy has the following composition, the concentrations of the different elements being expressed as wt-%: Formula (I), the remainder consisting of nickel and impurities resulting from the production of the superalloy. In addition, the composition satisfies the following equation, wherein the concentrations of the different elements are expressed as atomic percent: Formula (II). 1. A nickel-based superalloy of the following composition , the contents of the various elements being expressed as weight percentages:1.3%≤Al≤2.8%;trace amounts≤Co≤11%;14%≤Cr≤17%;3.6%≤Fe≤12%;2%≤Mo≤5%;0.5%≤Nb+Ta≤2.5%;2.5%≤Ti≤4.5%;1%≤W≤4%;0.0030%≤B≤0.030%;trace amounts≤C≤0.1%;0.01%≤Zr≤0.06%;the remainder consisting of nickel and impurities resulting from the production, [{'br': None, '8≤Al at %+Ti at %+Nb at %+Ta at %≤11'}, {'br': None, '0.7≤(Ti at %+Nb at %+Ta at %)/Al % at %≤1.3'}], 'and such that the composition satisfies the following equations wherein the contents are expressed as atomic percentages2. The superalloy according to claim 1 , characterized in that its composition satisfies the following equation wherein the contents are expressed as atomic percentages:{'br': None, '1≤(Ti at %+Nb at %+Ta at %)/Al at %≤1.3'}3. The superalloy according to claim 1 , characterized in that it contains between 4.0 and 12% of Fe claim 1 , as weight percentages.4. The superalloy according to claim 2 , characterized in that it contains between 5.1 and 12% of Fe claim 2 , as weight percentages.5. The superalloy according to claim 1 , characterized in that its composition is claim 1 , expressed as weight percentages:1.3%≤Al≤2.8%;7%≤Co≤11%;14%≤Cr≤17%;3.6%≤Fe≤9%;2%≤Mo≤5%;0.5%≤Nb+Ta≤2.5%;2.5%≤Ti≤4.5%;1%≤W≤4%;0.0030%≤B≤0.030%;trace amounts≤C≤0.1%,0.01%≤Zr≤0.06%; [{'br': None, '8≤Al at %+Ti at %+Nb at %+Ta at %≤11'}, {'br': None, '0.7≤(Ti at %+Nb at %+Ta at %)/Al at %≤1.3'}], 'and its composition satisfies the following equations wherein the contents are expressed as atomic percentagesthe ...

NICKEL ALLOY HAVING A STRUCTURAL CURING, PIECE THEREOF AND METHOD OF MANUFACTURING THE SAME.

Alliage à base nickel à durcissement structural, caractérisé en ce que sa composition est, en pourcentages pondéraux : - 18% ≤ Cr ≤ 22%, de préférence 18% ≤ Cr ≤ 20% ; - 18% ≤ Co ≤ 22%, de préférence 19% ≤ Co ≤ 21 % ; - 4% ≤ Mo + W ≤ 8%, de préférence 5,5% ≤ Mo + W ≤ 7,5% ; - traces ≤ Zr ≤ 0,06% ; - traces ≤ B ≤ 0,03%, de préférence traces ≤ B ≤ 0,01% ; - traces ≤ C ≤ 0,1%, de préférence traces ≤ C ≤ 0,06% ; - traces ≤ Fe 51 % ; - traces ≤ Nb ≤ 0,01% ; - traces ≤ Ta 50,01% ; - traces ≤ S ≤ 0,008% ; - traces ≤ P ≤ 0,015% ; - traces ≤ Mn ≤ 0,3% ; - traces ≤ Si ≤ 0,15% ; - traces ≤ O ≤ 0,0025% ; - traces ≤ N ≤ 0,0030% ; le reste étant du nickel et des impuretés résultant de l'élaboration, les teneurs en Al et Ti satisfaisant, de plus les conditions : - (1) Ti/Al ≤ 3 ; - (2) Al + 1,2 Ti ≥ 2% ; - (3) (0,2 Al - 1,25)2 - 0,5 Ti ≥ 0% ; - (4) Ti + 1,5 Al ≤ 4,5%. Pièce réalisée en cet alliage, et son procédé de fabrication. Nickel-based alloy with structural hardening, characterized in that its composition is, in weight percentages: - 18% ≤ Cr ≤ 22%, preferably 18% ≤ Cr ≤ 20%; - 18% ≤ Co ≤ 22%, preferably 19% ≤ Co ≤ 21%; - 4% ≤ Mo + W ≤ 8%, preferably 5.5% ≤ Mo + W ≤ 7.5%; - traces ≤ Zr ≤ 0.06%; - traces ≤ B ≤ 0.03%, preferably traces ≤ B ≤ 0.01%; - traces ≤ C ≤ 0.1%, preferably traces ≤ C ≤ 0.06%; - traces ≤ Fe 51%; - traces ≤ Nb ≤ 0.01%; - traces ≤ Ta 50.01%; - traces ≤ S ≤ 0.008%; - traces ≤ P ≤ 0.015%; - traces ≤ Mn ≤ 0.3%; - traces ≤ If ≤ 0,15%; - traces ≤ O ≤ 0.0025%; - traces ≤ N ≤ 0.0030%; the remainder being nickel and impurities resulting from the elaboration, the contents of Al and Ti satisfying, further conditions: - (1) Ti / Al ≤ 3; - (2) Al + 1.2 Ti ≥ 2%; - (3) (0.2 Al - 1.25) 2 - 0.5 Ti ≥ 0%; - (4) Ti + 1.5 Al ≤ 4.5%. Part made of this alloy, and its manufacturing process.

SUPERALLIAGE NICKEL BASE AND COMPONENTS PRODUCED IN THIS SUPERALLIAGE

Superalliage base nickel de composition suivante, les teneurs des divers éléments étant exprimées en pourcentages pondéraux : - 1,3% ≤ Al ≤ 2,8% ; - traces ≤ Co ≤ 11 % ; - 14% ≤ Cr ≤ 17% ; - traces ≤ Fe ≤ 12% ; - 2% ≤ Mo ≤ 5% ; - 0,5% ≤ Nb + Ta ≤ 2,5% ; - 2,5% ≤ Ti ≤ 4,5% ; - 1% ≤ W ≤ 4% ; - 0,0030% ≤ B ≤ 0,030% ; - traces ≤ C ≤ 0,1% ; - 0,01% ≤ Zr ≤ 0,06% ; le reste étant constitué de nickel et d'impuretés résultant de l'élaboration, et telle que la composition satisfait à l'équation suivante dans laquelle les teneurs sont exprimées en pourcentages atomiques : 8 at% ≤ Al at% + Ti at% + Nb at% + Ta at% ≤ 11 at% 0,7 ≤ (Ti% at%+ Nb% at% + Ta% at) / Al% at% ≤ 1,3 Nickel-based superalloy of the following composition, the contents of the various elements being expressed in percentages by weight: - 1.3% ≤ Al ≤ 2.8%; - traces ≤ Co ≤ 11%; - 14% ≤ Cr ≤ 17%; - traces ≤ Fe ≤ 12%; - 2% ≤ MB ≤ 5%; - 0.5% ≤ Nb + Ta ≤ 2.5%; - 2.5% ≤ Ti ≤ 4.5%; - 1% ≤ W ≤ 4%; - 0.0030% ≤ B ≤ 0.030%; - traces ≤ C ≤ 0.1%; - 0.01% ≤ Zr ≤ 0.06%; the remainder being made up of nickel and impurities resulting from the production, and such that the composition satisfies the following equation in which the contents are expressed in atomic percentages: 8 at% ≤ Al at% + Ti at% + Nb at% + Ta at% ≤ 11 at% 0.7 ≤ (Ti% at%+ Nb% at% + Ta% at) / Al% at% ≤ 1.3

SUPERALLIAGE BASED ON NICKEL FOR A TURBOMACHINE PIECE

L'invention concerne un procédé de traitement thermique (S) d'une pièce dans un superalliage à base de nickel, telle qu'une pièce de turbomachine, comprenant les étapes suivantes : - mise en solution super-solvus (S1) de la pièce à une température supérieure au solvus γ' de son matériau constitutif, - refroidissement lent (S2) de la pièce jusqu'à une température inférieure au solvus γ', - mise en solution subsolvus (S3) de la pièce à une température inférieure au solvus γ' de son matériau constitutif, et - refroidissement rapide (S4) de manière à précipiter la phase y' intragranulaire. The invention relates to a method of heat treatment (S) of a part in a nickel-based superalloy, such as a turbomachine part, comprising the following steps: - dissolving super-solvus (S1) of the part at a temperature higher than the solvus γ 'of its constituent material, - slow cooling (S2) of the workpiece to a temperature below the solvus γ', - dissolving subsolvus (S3) of the workpiece at a temperature below the solvus γ 'of its constituent material, and - rapid cooling (S4) so as to precipitate the intragranular phase y'.

PROCESS FOR MANUFACTURING A NICKEL-BASED SUPERALLIANCE WORKPIECE, AND A PRODUCT OBTAINED THEREBY

SUPERALLIAGE NICKEL BASE AND PIECES REALIZED IN THIS SUPALLIATION

Superalliage base nickel de composition suivante, les teneurs des divers éléments étant exprimées en pourcentages pondéraux : - 1,3% ≤ Al ≤ 2,8% ; - traces ≤ Co ≤ 11% ; - 14% ≤ Cr ≤ 17% ; - traces ≤ Fe ≤ 12% ; - 2% ≤ Mo ≤ 5% ; - 0,5% ≤ Nb + Ta ≤ 2,5% ; - 2,5% ≤ Ti ≤ 4,5% ; - 1% ≤ W ≤ 4% ; - 0,003% ≤ B ≤ 0,030% ; - traces ≤ C ≤ 0,1% ; - 0,01% ≤ Zr ≤ 0,06% ; le reste étant constitué de nickel et d'impuretés résultant de l'élaboration, et telle que la composition satisfait aux équations suivantes dans lesquelles les teneurs sont exprimées en pourcentages atomiques : 8 at% ≤ Al at% + Ti at% + Nb at% + Ta at% ≤ 11 at% 1 ≤ (Ti at% + Nb at%+ Ta at%)/Al at% ≤ 1,3 Pièce réalisée en ce superalliage Nickel-based superalloy of the following composition, the contents of the various elements being expressed in percentages by weight: - 1.3% ≤ Al ≤ 2.8%; - traces ≤ Co ≤ 11%; - 14% ≤ Cr ≤ 17%; - traces ≤ Fe ≤ 12%; - 2% ≤ MB ≤ 5%; - 0.5% ≤ Nb + Ta ≤ 2.5%; - 2.5% ≤ Ti ≤ 4.5%; - 1% ≤ W ≤ 4%; - 0.003% ≤ B ≤ 0.030%; - traces ≤ C ≤ 0.1%; - 0.01% ≤ Zr ≤ 0.06%; the remainder being made up of nickel and impurities resulting from the production, and such that the composition satisfies the following equations in which the contents are expressed in atomic percentages: 8 at% ≤ Al at% + Ti at% + Nb at% + Ta at% ≤ 11 at% 1 ≤ (Ti at% + Nb at%+ Ta at%)/Al at% ≤ 1.3 Part made of this superalloy

NICKEL ALLOY HAVING A STRUCTURAL CURING, PIECE THEREOF AND METHOD FOR MANUFACTURING THE SAME.

Nickel-based superalloy and articles made from said alloy

SUPERALLIAGE NICKEL BASE AND PIECES REALIZED IN THIS SUPALLIATION

Superalliage base nickel de composition suivante, les teneurs des divers éléments étant exprimées en pourcentages pondéraux : - 1,3% ≤ Al ≤ 2,8% ; - traces ≤ Co ≤ 11% ; - 14% ≤ Cr ≤ 17% ; - traces ≤ Fe ≤ 12% ; - 2% ≤ Mo ≤ 5% ; - 0,5% ≤ Nb + Ta ≤ 2,5% ; - 2,5% ≤ Ti ≤ 4,5% ; - 1% ≤ W ≤ 4% ; - 0,003% ≤ B ≤ 0,030% ; - traces ≤ C ≤ 0,1% ; - 0,01% ≤ Zr ≤ 0,06% ; le reste étant constitué de nickel et d'impuretés résultant de l'élaboration, et telle que la composition satisfait aux équations suivantes dans lesquelles les teneurs sont exprimées en pourcentages atomiques : 8 at% ≤ Al at% + Ti at% + Nb at% + Ta at% ≤ 11 at% 1 ≤ (Ti at% + Nb at%+ Ta at%)/Al at% ≤ 1,3 Pièce réalisée en ce superalliage

Method for producing a piece made from a superalloy based on nickel and corresponding piece

Procédé de fabrication d'une ébauche de pièce en superalliage à base de Ni, selon lequel on élabore un alliage, et on réalise des traitements thermiques, caractérisé en ce que : ledit superalliage contient au moins 2,5% au total de Nb et de Ta; on effectue un traitement thermique, comportant une pluralité de paliers : un premier palier entre 850 et 10000C pendant au moins 20 minutes pour précipiter de la phase d aux joints de grains; un deuxième palier à une température supérieure à celle du premier palier et permettant de réaliser une dissolution partielle de la phase d obtenue lors du premier palier; un traitement de vieillissement comportant un troisième palier et éventuellement un ou des paliers supplémentaires, à une température inférieure à celle du premier palier et permettant de faire précipiter les phases durcissantes ?' et ?". Pièce ainsi obtenue. Process for the production of an Ni-based superalloy component blank, in which an alloy is produced, and heat treatments are carried out, characterized in that: said superalloy contains at least 2.5% in total of Nb and Your; a heat treatment is carried out, comprising a plurality of stages: a first stage between 850 and 10000C for at least 20 minutes to precipitate phase d at the grain boundaries; a second bearing at a temperature greater than that of the first bearing and making it possible to partially dissolve the phase d obtained during the first bearing; an aging treatment comprising a third bearing and optionally one or more bearings, at a temperature lower than that of the first bearing and making it possible to precipitate the hardening phases; and? "thus obtained piece.

Nickel-based superalloy and parts made from said superalloy

A nickel superalloy has the following composition, the concentrations of the different elements being expressed as wt-%: Formula (I), the remainder consisting of nickel and impurities resulting from the production of the superalloy. In addition, the composition satisfies the following equation, wherein the concentrations of the different elements are expressed as atomic percent: Formula (II).

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