The Influence of Layer Thickness on the Fatigue Life of Laser Powder Bed Fusion Manufactured AlSi10Mg Parts
Rautio, Timo; Ridal, Santeri; Jaskari, Matias; Mustakangas, Aappo; Hietala, Mikko; Järvenpää, Antti (2023-11-06)
IEEE
06.11.2023
T. Rautio, S. Ridal, M. Jaskari, A. Mustakangas, M. Hietala and A. Järvenpää, "The Influence of Layer Thickness on the Fatigue Life of Laser Powder Bed Fusion Manufactured AlSi10Mg Parts," 2023 4th International Conference on Industrial Engineering and Artificial Intelligence (IEAI), Chiang Mai, Thailand, 2023, pp. 94-98, doi: 10.1109/IEAI59107.2023.00021
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© 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists,or reuse of any copyrighted component of this work in other works.
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202404262971
https://urn.fi/URN:NBN:fi:oulu-202404262971
Tiivistelmä
Abstract
The effect of production efficiency to the material properties of laser powder bed fusion (PBF-LB) manufactured AlSilOMg parts was investigated in this work. Production time can be reduced by increasing the used layer thickness, but the trade-off is typically reduced material quality. AlSilOMg parts were manufactured with three different layer thicknesses, 30, 60 and 90 µm to study the influence on microstructure, mechanical properties and fatigue strength of the material. The results show that most of the material properties are affected by the increased build speed. The microstructural changes and added porosity lower the strength of the material but also have a major impact on the fatigue life of the material. It was shown that the vertical direction is the most prone to critical defects that lower especially the fatigue strength in bending loading. Interesting finding was that the fatigue strength in horizontal direction was not affected by the layer thickness.
The effect of production efficiency to the material properties of laser powder bed fusion (PBF-LB) manufactured AlSilOMg parts was investigated in this work. Production time can be reduced by increasing the used layer thickness, but the trade-off is typically reduced material quality. AlSilOMg parts were manufactured with three different layer thicknesses, 30, 60 and 90 µm to study the influence on microstructure, mechanical properties and fatigue strength of the material. The results show that most of the material properties are affected by the increased build speed. The microstructural changes and added porosity lower the strength of the material but also have a major impact on the fatigue life of the material. It was shown that the vertical direction is the most prone to critical defects that lower especially the fatigue strength in bending loading. Interesting finding was that the fatigue strength in horizontal direction was not affected by the layer thickness.
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