The invention relates to a method for producing a part, comprising the production of successive solid metallic layers (201?20n), each layer being produced by depositing a metal (25) called filler metal, and said method being characterized in that the part has a specific grain structure. The invention also relates to a part obtained by means of this method and an alternative method. The alloy used in the additive manufacturing method of the invention makes it possible to obtain parts with exceptional properties.
The invention relates to a method for producing a part, comprising the production of successive solid metallic layers (201?20n), each layer being produced by depositing a metal (25) called filler metal, said filler metal consisting of an aluminium alloy comprising at least the following alloying elements: - Zr, in a mass fraction of 0,60 to 1.40%; - Mn, in a mass fraction of 2.00 to 5.00 %; - Ni, in a mass fraction of 1.00 to 5.00 %; - Cu, in a mass fraction of 1.00 to 5.00%. The invention also relates to a part obtained by means of this method. The alloy used in the additive manufacturing method of the invention makes it possible to obtain parts with exceptional properties.
The invention relates to a method for manufacturing a part comprising a formation of successive metal layers (201,....20n), superposed on one another, each layer being formed by depositing a filling metal, the filling metal being subjected to an input of energy so as to melt and to constitute the layer, by solidifying, the method being characterised in that the filling metal (15, 35) is an aluminium alloy comprising the following alloy elements, in percentages by weight: Mg: 0%-6%; Zr: 0.7%-2.5%, preferably according to a first variant >1% and <2.5%; or preferably according to a second variant 0.7-2%; or even 0.7-1.6%; or even 0.7-1.4%; or even 0.8-1.4%; or even 0.8-1.2%; at least one alloy element chosen from Fe, Cu, Mn, Ni and/or La: at least 0.1%, preferably at least 0.25%, more preferably at least 0.5% per element; impurities: <0.05% individually, and preferably <0.15% in total.
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/047 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
The invention relates to a method for manufacturing a part (20) comprising a formation of successive metal layers (201... 20n) superposed on one another, each layer being formed by depositing a filler metal (15, 25), energy being supplied to the filler metal in such a way that it melts and, upon solidifcation, constitutes said layer, the method being characterized in that the filler metal (15, 25) is an aluminium alloy comprising the following alloy elements (in wt %): -Zr: 0.5 to 2.5%, preferably, according to a first variant, 0.8 to 2.5%, more preferably 1 to 2.5%, even more preferably 1.3 to 2.5%; or preferably, according to a second variant, 0.5 to 2%, more preferably 0.6 to 1.8%, more preferably 0.6 to 1.6%, more preferably 0.7 to 1.5%, more preferably 0.8 to 1.5%, more preferably 0.9 to 1.5%, even more preferably 1 to 1.4%; - Fe: 0% to 3%, preferably 0.5 to 2.5%; preferably, according to a first variant, 0.8 to 2.5%, preferably 0.8 to 2%, more preferably 0.8 to 1.2%; or preferably, according to a second variant, 1.5 to 2.5%, preferably 1.6 to 2.4%, more preferably 1.7 to 2.3%; - optionally Si: = 0.3%, preferably < 0.2%, more preferably < 0.1%; - optionally Cu: = 0.5%, preferably 0.05 to 0.5%, preferably 0.1 to 0.4%; - optionally Mg: = 0.2%, preferably < 0.1%, preferably < 0.05%; - other alloying elements: < 0.1% individually, and in total < 0.5%; - impurities: < 0,05 % individually, and in total < 0,15 %; the remainder being aluminium.
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
The invention relates to a process for manufacturing a part comprising a formation of successive solid metal layers (20i...20n), superposed on one another, each layer describing a pattern defined using a numerical model {M), each layer being formed by the deposition of a metal (25), referred to as solder, the solder being subjected to an input of energy so as to start to melt and to constitute, by solidifying, said layer, wherein the solder takes the form of a powder (25), the exposure of which to an energy beam (32) results in melting followed by solidification so as to form a solid layer (20i...20n), the process being characterized in that the solder (25) is an aluminum alloy comprising at least the following alloy elements: - Si, in a weight fraction of from 0 to 4%, preferably from 0.5% to 4%, more preferentially from 1% to 4%, and more preferentially still from 1% to 3%; - Fe, in a weight fraction of from 1% to 15%, preferably from 2% to 10%; - V, in a weight fraction of from 0 to 5%, preferably from 0.5% to 5%, more preferentially from 1% to 5%, and more preferentially still from 1% to 3%; at least one element chosen from: Ni, La and/or Co, in a weight fraction of from 0.5% to 15%, preferably from 1% to 10%, more preferentially from 3% to 8% each for Ni and Co, in a weight fraction of from 1% to 10%, preferably from 3% to 8% for La, and in a weight fraction of less than or equal to 15%, preferably less than or equal to 12% in total. The invention also relates to a part obtained by this process. The alloy used in the additive manufacturing process according to the invention makes it possible to obtain parts with remarkable characteristics.
B33Y 70/00 - Materials specially adapted for additive manufacturing
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B22F 7/02 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
The invention relates to a process for manufacturing parts (20), the process including the formation of successive, superimposed solid metal layers (201...20n), each layer describing a pattern defined on the basis of a numerical model (M), each layer being formed by a metal (25), the so-called filler metal, which is deposited and exposed to energy supplied so as to cause the filler metal to melt and to form, upon its solidification, the layer, in which process the filler metal is in the form of a powder (25) which, when exposed to an energy beam (32), melts and then solidifies, forming a solid layer (201...20n), the process being characterised in that the filler metal (25) is an aluminium alloy comprising at least the following alloying elements: Ni, in a proportion by mass of 1 to 6%, preferably 1 to 5%, more preferably 2 to 4%; Mn, in a proportion by mass of 1 to 7%, preferably 1 to 6%, more preferably 2 to 5%; Zr, in a proportion by mass of 0.5 t 4%, preferably 1 to 3%; Fe, in a proportion by mass of maximum 1%, preferably 0.05 to 0.5%, more preferably 0.1 to 0.3%; Si, in a proportion by mass of maximum 1%, preferably of maximum 0.5%. The invention also concerns a part obtained by this process. The alloy used in the additive manufacturing process according to the invention makes it possible to obtain parts having remarkable properties.
B33Y 70/00 - Materials specially adapted for additive manufacturing
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
C22C 21/12 - Alloys based on aluminium with copper as the next major constituent
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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