The structure and mechanical properties of the Al–20 vol % Pb alloy produced by laser powder bed fusion of an elemental powder mixture have been investigated in this work. The radiation power was 70–130 W and the beam sliding speed was 0.8–1.2 m/s. It is established that as the density of volumetric energy (E) incident on the deposited powder layer increases up to 50 J/mm3, the strength and ductility of the synthesized samples in the compression tests increase. However, at higher E values, these properties begin to decrease. The changes in the mechanical properties of the alloy are attributed to alterations in its phase and grain structure. As a result, the ultimate compressive strength of the alloy prepared under optimal conditions (E ≈ 50 J/mm3) reaches 110 MPa, and degree of the deformation before fracture is 30%. The influence of E on the structural and mechanical characteristics of the alloy is discussed.
Rusin et al. (Sat,) studied this question.