Anisotropy of the Microstructure and Microhardness of the AlSi10Mg Alloy Fabricated by Selective Laser Melting
A. P. Burmak$^{1}$, S. M. Voloshko$^{1}$, S. I. Sidorenko$^{1}$, I. A. Vladymyrskyi$^{1}$, M. M. Voron$^{1,2}$, B. M. Mordyuk$^{3}$, M. О. Vasylyev$^{3}$
$^{1}$National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37, Beresteiskyi Ave., UA-03056 Kyiv, Ukraine
$^{2}$Physical and Technological Institute of Metals and Alloys, N.A.S. of Ukraine, 34/1 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
$^{3}$G. V. Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
Received: 25.07.2024; final version - 01.08.2024. Download: PDF
This study investigates the effect of anisotropy on the structure and microhardness of the AlSi10Mg aluminium alloy fabricated by selective laser melting of powder. The microstructure of the AlSi10Mg alloy consists of a solid solution of aluminium and a ternary eutectic (Al + Si + Mg2Si). Orientation dependences of microhardness are measured in three directions, and the average value (1.425 GPa) of microhardness generally agrees satisfactorily with that characteristic of the cast AlSi10Mg alloy, with data scatter not exceeding ≅ 10–15%. Residual compressive macrostresses differ by a factor of 1.4 for the horizontal and vertical planes of a sample with the shape of a parallelepiped with dimensions of 20×10×5 mm. The nature of eutectic precipitates and the arrangement of strengthening particles are analysed within the volume, at the edges of the sample, and in the area contacted with the building platform.
Key words: AlSi10Mg aluminium alloy, selective laser melting, stresses, structural–phase composition, mechanical properties.
URL: https://mfint.imp.kiev.ua/en/abstract/v47/i05/0473.html
DOI: https://doi.org/10.15407/mfint.47.05.0473
PACS: 46.55.+d, 61.72.Dd, 61.72.Ff, 62.20.Qp, 81.70.Bt, 81.70.Jb
Citation: A. P. Burmak, S. M. Voloshko, S. I. Sidorenko, I. A. Vladymyrskyi, M. M. Voron, B. M. Mordyuk, and M. О. Vasylyev, Anisotropy of the Microstructure and Microhardness of the AlSi10Mg Alloy Fabricated by Selective Laser Melting, Metallofiz. Noveishie Tekhnol., 47, No. 5: 473—491 (2025) (in Ukrainian)