Preprint Article Version 1 This version is not peer-reviewed

Modeling of Tensile Stress Distribution Considering Anisotropy of Mechanical Properties of Thin‐Walled AlSi10Mg Samples Obtained by Selective Laser Melting

Sergey N. Grigoriev
,
Nikita Yu. Nikitin
* ,
Aleksander Frolov
,
Petr Shapovalov
,
Anton Medeltsev
,
Mikhail Voronov
,
Roman Khmyrov
,
Idarmach Idarmachev
,
Pavel Peretyagin
Version 1 : Received: 20 August 2024 / Approved: 20 August 2024 / Online: 21 August 2024 (09:25:07 CEST)

How to cite: Grigoriev, S. N.; Nikitin, N. Y.; Frolov, A.; Shapovalov, P.; Medeltsev, A.; Voronov, M.; Khmyrov, R.; Idarmachev, I.; Peretyagin, P. Modeling of Tensile Stress Distribution Considering Anisotropy of Mechanical Properties of Thin‐Walled AlSi10Mg Samples Obtained by Selective Laser Melting. Preprints 2024, 2024081545. https://doi.org/10.20944/preprints202408.1545.v1 Grigoriev, S. N.; Nikitin, N. Y.; Frolov, A.; Shapovalov, P.; Medeltsev, A.; Voronov, M.; Khmyrov, R.; Idarmachev, I.; Peretyagin, P. Modeling of Tensile Stress Distribution Considering Anisotropy of Mechanical Properties of Thin‐Walled AlSi10Mg Samples Obtained by Selective Laser Melting. Preprints 2024, 2024081545. https://doi.org/10.20944/preprints202408.1545.v1

Abstract

In the presented work, on the example of thin-walled specimens made by selective laser melting technology from AlSi10Mg subjected to preliminary heat treatment, it is shown that there is a critical point of transition from the elastic-plastic region of the engineering stress-strain diagram to the yield and fracture stresses. It was found that the critical point has a strong statistically significant correlation (0.83 by Spearman and 0.93 by Pearson) with the strain hardening coeffi-cient calculated in the section from yield strength to fracture strength. A regression equation linking the critical transition point to the strain hardening coefficient was obtained. It is shown that with increasing plasticity of thin-walled samples obtained by selective laser melting of AlSi10Mg leads to a change in the type of stress distribution in the elastic-plastic region (the Weibull distribution changes to a normal distribution) and the contribution of the probability density of stress distribution described by the Cauchy distribution with a mode near the fracture stress to the full probability density of fracture increases.

Keywords

Selective laser melting; AlSi10Mg; Weibull distribution; failure probability; Akaikeʹs criterion; strain hardening coefficient; evaluating distributions

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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