Effect of Laser Energy Density During LPBF on the Structure and Mechanical Properties of Al–15Sn–5Pb Alloy; Materials; Vol. 18, iss. 23

Effect of Laser Energy Density During LPBF on the Structure and Mechanical Properties of Al–15Sn–5Pb Alloy; Materials; Vol. 18, iss. 23

Bibliografiska uppgifter
Parent link:Materials.— .— Basel: MDPI AG
Vol. 18, iss. 23.— 2025.— Article number 5268, 11 p.
Övriga upphovsmän: Rusin N. M. Nikolay Martemjyanovich, Skorentsev A. L. Aleksandr Leonidovich, Akimo K. O. Kirill Olegovich, Likharev V. E. Vadim Evgenjevich, Ilyashchenko D. P. Dmitry Pavlovich, Dmitriev V. I. Vladimir Ivanovich
Sammanfattning:Title screen
Al–15Sn–5Pb (vol.%) alloy was fabricated by the Laser Powder Bed Fusion (LPBF) method at laser scanning speeds of 0.8, 1.0, and 1.2 m/s and laser powers ranging from 70 to 130 W. The samples were synthesized from a mixture of elemental powders using an ONSINT AM150 3D printer under a flowing argon atmosphere. The structure and mechanical properties under compression tests of the produced material were investigated as a function of the volumetric laser energy density (E) during LPBF. It has been established that low laser energy density during LPBF results in incomplete melting of aluminum particles and a non-uniform distribution of soft inclusions within the material. Increasing the energy density ensures a significantly more uniform distribution of the phases, resulting in the formation of a fine-grained three-phase alloy. It was established that both the ductility and strength of the alloy improve with the increase in E until a critical value is reached. As a result, at E ≥ 48 J·mm−3, the ultimate strength of the alloy reaches 100 ± 5 MPa, and its deformation before fracture is 15 ± 1%. Substituting one quarter of the tin volume with lead results in a significant increase in the ductility of the LPBF-fabricated aluminum alloy
Текстовый файл
Språk:engelska
Publicerad: 2025
Ämnen:
laser powder bed fusion (LPBF)
volumetric laser energy density
critical energy density
aluminum matrix alloy
microstructure; ductility
compressive strength
электронный ресурс
труды учёных ТПУ
Länkar:https://doi.org/10.3390/ma18235268
Materialtyp: Elektronisk Bokavsnitt
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=683619

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