Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Experimental and Statistical Analysis of the Effect of Heat Treatment on Surface Roughness and Mechanical Properties of Thin-Walled Samples Obtained by Selective Laser Melting from the Material AlSi10Mg

Sergey N. Grigoriev
ORCID logo ,
Nikita Yu. Nikitin
* ORCID logo ,
Oleg Yanushevich
,
Natella Kriheli
,
Olga Kramar
,
Roman Khmyrov
ORCID logo ,
Idarmach Idarmachev
,
Pavel Peretyagin
ORCID logo
Version 1 : Received: 18 October 2023 / Approved: 19 October 2023 / Online: 19 October 2023 (11:41:38 CEST)

A peer-reviewed article of this Preprint also exists.

Grigoriev, S.N.; Nikitin, N.; Yanushevich, O.; Kriheli, N.; Kramar, O.; Khmyrov, R.; Idarmachev, I.; Peretyagin, P. Experimental and Statistical Analysis of the Effect of Heat Treatment on Surface Roughness and Mechanical Properties of Thin-Walled Samples Obtained by Selective Laser Melting from the Material AlSi10Mg. Materials 2023, 16, 7326. https://doi.org/10.3390/ma16237326 Grigoriev, S.N.; Nikitin, N.; Yanushevich, O.; Kriheli, N.; Kramar, O.; Khmyrov, R.; Idarmachev, I.; Peretyagin, P. Experimental and Statistical Analysis of the Effect of Heat Treatment on Surface Roughness and Mechanical Properties of Thin-Walled Samples Obtained by Selective Laser Melting from the Material AlSi10Mg. Materials 2023, 16, 7326. https://doi.org/10.3390/ma16237326

Abstract

Statistical analysis of mechanical properties of thin-walled samples (~500 microns) obtained by selective laser melting from AlSi10Mg material and subjected to heat treatment for 1 hour at temperatures from 260 °C to 440 °C (step of aging temperature change 30 °C) has shown that the maximum strain hardening in the stretching diagram section from yield strength to tensile strength is achieved at the heat treatment temperature equal to 290 °C. At carrying out of correlation analysis statistically significant positive correlation between deformation corresponding to yield strength and the sum of heights of the largest protrusions and depths of the largest depressions of the surface roughness profile within the basic length of the sample (Rz) and the full height of the surface roughness profile (Rmax) was established. It was found that the reason for the correlation is the presence of cohesive states between the extreme values of the surface roughness profile that persist along the entire length of the specimen.

Keywords

selective laser melting; aluminum alloys; surface roughness; heat treatment; mechanical properties

Subject

Chemistry and Materials Science, Materials Science and Technology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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