Metallurgical and Tensile Properties of a Laser Powder Bed Fused Scandium-free Al–Mg–Zr Alloy

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Chemistry and Physics Pub Date : 2025-02-13 DOI:10.1016/j.matchemphys.2025.130542

Shawkat I. Shakil , Wiktor Bednarczyk , Marta Gajewska , Zaynab Mahbooba , Ankit Saharan , Meysam Haghshenas

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引用次数: 0

Abstract

In this study, an Al–Mg–Zr alloy was developed for laser powder bed fusion (LPBF) to fulfill the need for a cost-effective, high-strength additive manufactured (AM) aluminum alloy. To get to the peak strength a single-step aging treatment (6 h at 400 °C followed by gas quench) was conducted on the printed alloy. The quasi-static uniaxial tensile properties of aged LPBF Al–Mg–Zr were measured as yield strength (YS) of 390 ± 2 MPa, ultimate tensile strength (UTS) of 428 ± 2 MPa, and elongation to failure (EL) of 14.26 ± 0.94 %. Microstructure analyses via scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) displayed the presence of precipitates and a bimodal grain distribution with ultrafine (∼1 μm) and fine grains (∼5 μm). Detailed investigation through transmission electron microscopy (TEM) showed frequent precipitation of nanoscale L1₂-Al₃Zr along with sub-micron Mn- and Fe-rich precipitates (i.e., orthorhombic Al₆(Mn, Fe)) and nanoscale Mg- and O-rich particles. The work-hardening behavior of the studied LPBF Al–Mg–Zr alloy offered valuable insights into the connection between the microstructure and tensile properties.

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来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.