| abstract |
The present invention relates to a process for manufacturing a part (20) comprising a formation of successive metal layers (20 1 …20 n ), superimposed on one another, each layer describing a pattern defined from a numerical model, each layer being formed by the deposition of a metal (15, 25), referred to as filling metal, the filling metal being subjected, at a pressure greater than 0.5 times the atmospheric pressure, to an input of energy so as to melt and constitute said layer, the process being characterized in that the filling metal is an aluminium alloy of the 2xxx series, comprising the following alloying elements: - Cu, in a weight fraction of between 3% and 7%; - Mg, in a weight fraction of between 0.1% and 0.8%; - at least one element, or at least two elements or even at least three elements chosen from: • Mn, in a weight fraction of between 0.1% and 2%, preferably of at most 1% and in a preferred manner of at most 0.8%; • Ti, in a weight fraction of between 0.01% and 2%, preferably of at most 1% and in a preferred manner of at most 0.3%; • V, in a weight fraction of between 0.05% and 2%, preferably of at most 1% and in the preferred manner of at most 0.3%; • Zr, in a weight fraction of between 0.05% and 2%, preferably of at most 1% and in a preferred manner of at most 0.3%; • Cr, in a weight fraction of between 0.05% and 2%, preferably of at most 1% and in the preferred manner of at most 0.3%; and - optionally at least one element, or at least two elements or even at least three elements chosen from: • Ag, in a weight fraction of between 0.1% and 0.8%; • Li, in a weight fraction of between 0.1% and 2%, preferably 0.5% and 1.5%; • Zn, in a weight fraction of between 0.1% and 0.8%. |