Method for producing a part comprising the production of successive solid metallic layers (20 1...20 n), which are superimposed on each other, each layer describing a pattern defined using a digital model, each layer being produced by depositing a metal, called filler metal, the filler metal being subjected to a supply of energy so as to become molten and to constitute, upon solidifying, said layer, wherein the filler metal takes the form of a powder, the exposure of which to an energy beam results in a melting followed by a solidification, so as to form a solid layer (20 1...20 n), the method being characterized in that the filler metal is an aluminum alloy comprising at least the following alloy elements: - Zr, in a mass fraction of 0.60 to 1.40%, preferably of 0.70 to 1.30%, preferably of 0.80 to 1.2 %, more preferably of 0.85 to 1.15%; even more preferably of 0.90 to 1.10%; - Mn, in a mass fraction of 2.00 to 5.00%, preferably of 3.00 to 5.00%, preferably of 3.50 to 4.50%; - Ni, in a mass fraction of 1.00 to 5.00%, preferably of 2.00 to 4.00%, preferably of 2.50 to 3.50%; - Cu, in a mass fraction of 1.00 to 5.00%, preferably of 1.00 to 3,00%, preferably of 1.50 to 2.50%; - optionally at least one element selected from: Hf, Cr, Ti, Er, W, Nb, Ta, Y, Yb, Nd, Ce, Co, Mo, Lu, Tm, V and/or mischmetal, in a mass fraction less than or equal to 5.00%, preferably less than or equal to 3.00% each, and less than or equal to 15.00%, preferably less than or equal to 12.00%, even more preferably less than or equal to 5.00 % in total; - optionally at least one element selected from: Fe, Si, Mg, Zn, Sc, La, Sr, Ba, Sb, Bi, Ca, P, B, In and/or Sn, in a mass fraction less than or equal to 1.00%, preferably less than or equal to 0.50%, preferably less than or equal to 0.30%, more preferably less than or equal to 0.10%, even more preferably less than or equal to 700 ppm each, and less than or equal to 2.00%, preferably less than or equal to 1.00% in total; - optionally at least one element selected from: Ag in a mass fraction of 0.06 to 1.00%, Li in a mass fraction of 0.06 to 1.00%; - optionally impurities in a mass fraction less than 0.05% each (i.e., 500 ppm) and less than 0.15% in total; - the remainder being aluminum. - Zr, in a mass fraction of 0.60 to 1.40%, preferably of 0.70 to 1.30%, preferably of 0.80 to 1.2 %, more preferably of 0.85 to 1.15%; even more preferably of 0.90 to 1.10%; - Mn, in a mass fraction of 2.00 to 5.00%, preferably of 3.00 to 5.00%, preferably of 3.50 to 4.50%; - Ni, in a mass fraction of 1.00 to 5.00%, preferably of 2.00 to 4.00%, preferably of 2.50 to 3.50%; - Cu, in a mass fraction of 1.00 to 5.00%, preferably of 1.00 to 3,00%, preferably of 1.50 to 2.50%; - optionally at least one element selected from: Hf, Cr, Ti, Er, W, Nb, Ta, Y, Yb, Nd, Ce, Co, Mo, Lu, Tm, V and/or mischmetal, in a mass fraction less than or equal to 5.00%, preferably less than or equal to 3.00% each, and less than or equal to 15.00%, preferably less than or equal to 12.00%, even more preferably less than or equal to 5.00 % in total; - optionally at least one element selected from: Fe, Si, Mg, Zn, Sc, La, Sr, Ba, Sb, Bi, Ca, P, B, In and/or Sn, in a mass fraction less than or equal to 1.00%, preferably less than or equal to 0.50%, preferably less than or equal to 0.30%, more preferably less than or equal to 0.10%, even more preferably less than or equal to 700 ppm each, and less than or equal to 2.00%, preferably less than or equal to 1.00% in total; - optionally at least one element selected from: Ag in a mass fraction of 0.06 to 1.00%, Li in a mass fraction of 0.06 to 1.00%; - optionally impurities in a mass fraction less than 0.05% each (i.e., 500 ppm) and less than 0.15% in total; - the remainder being aluminum.