Layer Thickness for SLM of 3D Printed AlSi10Mg Alloys.

Based on three processing parameter combinations of optimized layer thickness, the influences of processing parameter combinations on the basic properties of AlSilOMg alloy samples printed by SLM was analyzed. In samples of the three processing parameter combinations, hardness is more than 63HRB, wear loss of per area is below 1.5X10^-5/(s · mm²), porosity is below 0.05%, tensile strength is higher than 440 MPa, and dimensional errors are within ± 0.1 mm. Surface roughness Ra of the upper surface is less than 4 µm, and surface roughness Ra of the side surface is less than 5 µm. The surface quality of the samples printed by the layer thickness 30 µm is the best. [ABSTRACT FROM AUTHOR]