LAUSR

Abstract The ALM process (Additive Layer Manufacturing) uses metallic alloy powders with an average diameter in the range of 10–30 μm. This study concerns the characterization of an Al Si 10 Mg aluminium alloy spherical powder with a d50 of 17 μm and an oxide amount of 7–8 wt%. The MIE, Pmax and Kst are respectively 11–14 mJ, 8.5 bara and 165 bar m/s. The particle temperature measurement shows two levels of temperature: 3050 K during the first steps of the combustion and the second of 2550 K which occurs a short time after the Kst time. Finally, ignition delays are almost constant on a large range of dust concentrations and are at the same level as hydrocarbons.