Development of laser powder bed fusion parameters, structure and mechanical properties of a high-strength aluminum alloy Al–Ce–Cu

Nerush S.V., Kaplansky Yu.Yu., Dynin N.V., Benarieb I., Savichev I.D.
UDC
538.9:624.1
DOI
10.18577/2307-6046-2023-0-1-50-68
Article PDF (Russian) (2.3 MB)
How to cite
Nerush S.V., Kaplansky Yu.Yu., Dynin N.V., Benarieb I., Savichev I.D. Development of laser powder bed fusion parameters, structure and mechanical properties of a high-strength aluminum alloy Al–Ce–Cu // Proceedings of VIAM. 2023. No. 1. DOI: 10.18577/2307-6046-2023-0-1-50-68. URL: https://test.viam.ru/en/journal/2023/1/5
Keywords
Al–Ce–Cu alloys, additive manufacturing, laser powder bed fusion, mechanical properties, transmission electron microscopy
Abstract

Presents the results of studies of the structure and mechanical properties of a heat-resistant aluminum alloy Al–Ce–Cu produced by laser powder bed fusion (L-PBF). The influence of the synthesis parameters on the single track’s formation, the structure of melt pool, and the properties of Al–Ce–Cu alloy has been studied. The analysis of the mechanical properties of the synthesized material was carried out in comparison with the cast material under normal conditions and elevated temperatures. The developed modes of synthesis provided a twofold increase in the yield strength and an eightfold increase in the plastic strain degree of the Al–Ce–Cu alloy in comparison with the cast one, which significantly expands the scope of its application for aircraft critical parts. A comparative analysis of the mechanical properties of the cast and synthesized material under normal conditions and elevated temperatures is given. Using scanning electron microscopy, a high-resolution transmission electron microscopy (HRTEM) and thermodynamic modeling of the phase composition, the structural-phase state of the material in the cast and synthesized states was studied.

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