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Abstract <p>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 (<i>E</i>) incident on the deposited powder layer increases up to 50 J/mm<sup>3</sup>, the strength and ductility of the synthesized samples in the compression tests increase. However, at higher <i>E</i> 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 (<i>E</i> ≈ 50&#xa0;J/mm<sup>3</sup>) reaches 110 MPa, and degree of the deformation before fracture is 30%. The influence of <i>E</i> on the structural and mechanical characteristics of the alloy is discussed.</p>

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Influence of L-PBF Mode on the Structure and Mechanical Properties of Al–20 Pb Alloy

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • N. M. Rusin,
  • A. L. Skorentsev,
  • K. O. Akimov,
  • V. E. Likharev,
  • A. I. Dmitriev,
  • A. Yu. Nikonov

摘要

Abstract

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.