METAL POWDER FOR ADDITIVE MANUFACTURING

The invention relates to a metal powder for additive manufacturing having a composition comprising the following elements, expressed in content by weight: 0.01 % = C = 0.2%, 4.6% = Ti = 10%, (0.45 xTi) - 0.22% = B = (0.45 xTi) + 0.70%, S = 0.03%, P = 0.04%, N = 0.05%, O = 0.05% and optionally contai...

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Bibliographische Detailangaben
Hauptverfasser:	REMENTERIA FERNANDEZ, ROSALIA, OBERBILLIG, CARLA, BONNET, FREDERIC, CORRAL CORRALES, MARIA ELENA
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING ALLOYS CASTING CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	The invention relates to a metal powder for additive manufacturing having a composition comprising the following elements, expressed in content by weight: 0.01 % = C = 0.2%, 4.6% = Ti = 10%, (0.45 xTi) - 0.22% = B = (0.45 xTi) + 0.70%, S = 0.03%, P = 0.04%, N = 0.05%, O = 0.05% and optionally containing: Si = 1.5%, Mn = 3%, Al = 1.5%, Ni = 1 %, Mo = 1 %, Cr = 3%, Cu = 1 %, Nb = 0.1 %, V = 0.5% and comprising eutectic precipitates of TiB2 and Fe2B, the balance being Fe and unavoidable impurities resulting from the elaboration, the volume percentage of TiB2 being equal or more than 10% and the mean bulk density of the powder being 7.50 g/cm3 or less. The invention also related to its manufacturing method by atomization. L'invention concerne une poudre métallique pour fabrication additive ayant une composition comprenant les éléments suivants, exprimés en teneur en poids : 0,01 % = C = 0,2 %, 4,6 % = Ti = 10 %, (0,45 xTi)-0,22 % = B = (0,45 xTi) + 0,70 %, S = 0,03 %, P = 0,04 %, N = 0,05 %, O = 0,05 % et contenant éventuellement : Si = 1,5 %, Mn = 3 %, Al = 1,5 %, Ni = 1 %, Mo = 1 %, Cr = 3 %, Cu = 1 %, Nb = 0,1 %, V = 0,5 % et comprenant des précipités eutectiques de TiB2 et Fe2B, le reste étant du Fe et des impuretés inévitables résultant de l'élaboration, le pourcentage en volume de TiB2 étant supérieur ou égal à 10 % et la densité apparente moyenne de la poudre étant inférieure ou égale à 7,50 g/cm3. L'invention concerne également son procédé de fabrication par atomisation.