1results about How to "Reduce oxidation inclusions" patented technology

The application discloses a high-strength and high-toughness Al-Ca-In series aluminum alloy low-oxygen spherical powder for additive manufacturing and a preparation method thereof, relates to the technical field of additive manufacturing powder, and comprises the following components in percentage by mass: 1.5-3.0% of magnesium, 0.15-0.60% of manganese, 1.0-2.0% of calcium, 0.06-0.25% of indium, 0.08-0.18% of zirconium and 0-0.05% of titanium, and the balance of aluminum and impurities, wherein the total oxygen is not more than 0.10%; the powder surface has a nitrogen-containing diffusion barrier layer with a thickness of 2-8 nanometers and an ultrathin oxide layer with a thickness of 0.5-2.0 nanometers in sequence, and the surface enrichment and interface capture indexes are limited; and the powder is prepared by high-temperature dissolution of manganese and zirconium, low-temperature segmented calcium addition, nitrogen-containing gas atomization and low-temperature micro-oxidation. The powder inhibits the surface migration and oxidation loss of calcium and indium, improves the component stability in recycling and forming, reduces defects and performance dispersion, and is suitable for the high-strength and high-toughness manufacturing consistency of thin-wall lattice load-bearing parts.