20.500.12556/DKUM-87832 Dimensional deviations in Ti-6Al-4V discs produced with different process parameters during selective laser melting When manufacturing complicated products where both material and design play a role, especially thin and curved components, it is difcult to maintain accurate dimensions in Selective Laser Melting. Considering these difculties, this article presents the dimensional errors in the fabrication of Ti-6Al-4V discs and their thermomechanics during manufacturing. Various combinations of laser processing parameters were used to fabricate the 2.00 mm thick discs with a diameter of 5.70 mm. It was found that the thickness shortened and the round shape changed to an oval shape for most of the discs. The thickness decreased along the build-up direction from the bottom to the top and formed a taper that increased with increasing energy density (ED). The horizontal diameter of the discs changed slightly, while the vertical diameters changed remarkably with increasing ED. On the other hand, reducing the laser power resulted in a reduction of the roundness error, while it caused a reduction of the thickness. The hatch spacing signifcantly afected the volume of the melt pool and caused a change in the vertical diameter. The central part of the curved surface of the discs became concave and the concavity increased due to the increasing ED. dimension Ti-6Al-4V lase power scanning speed hatch spacing selective laser melting dimenzije moč laserja hitrost skeniranja true false true Springer Angleški jezik Slovenski jezik https://link.springer.com/journal/170 Članek v reviji 2024-03-29 09:22:32 2024-03-29 09:22:32 2024-03-30 03:33:52 0000-00-00 00:00:00 2023 0 0 str. 5655-5669 Vol. 129 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-07-25 2023-10-27 2023-11-22 621.9 173501699 10.1007/s00170-023-12620-6 1433-3015 s00170-023-12620-6.pdf s00170-023-12620-6.pdf 1 052FCC93C41D49AA46C6C4F9F32C96F2 1c716b424e51e8ebb98d134893d86a75b5b61b923cc0e48d188a5ce69d7095ff 232c9a4b-eda6-11ee-9759-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=177608 https://link.springer.com/article/10.1007/s00170-023-12620-6 0 2b889e80-eda6-11ee-9759-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=177609 Fakulteta za strojništvo 0 0 0