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- W3090861572 abstract "The low laser absorptivity and high thermal conductivity of Al are the foremost concerns when developing Al matrix composites (AMCs) through laser powder bed fusion (L-PBF) process. In this study, we demonstrated an example of improving the 3D-printability of AMCs by means of powder surface modification. Flexible graphene oxide (GO) sheets were carefully coated onto the surface of AlSi10Mg powders under electrostatic self-assembly via a hetero-agglomeration process. In addition to maintaining a shape and particle size similar to the initial metallic powders, the GO-coated AlSi10Mg powders exhibited enhanced laser absorptivity and decreased thermal conductivity, beneficial to their fusion. Under high-energy irradiation, the GO sheets were partially transformed to Al4C3 nanorods individually distributed in the matrix, while the un-reacted parts floated within molten pools under buoyancy, forming an in-situ carbon layer tightly deposited on the surface of the composite build. This work may provide significant guidance for the design and production of high-performance AMCs with advanced architectures for practical applications." @default.
- W3090861572 created "2020-10-08" @default.
- W3090861572 creator A5003063605 @default.
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- W3090861572 date "2020-12-01" @default.
- W3090861572 modified "2023-10-15" @default.
- W3090861572 title "Microstructure and mechanical property of graphene oxide/AlSi10Mg composites fabricated by laser additive manufacturing" @default.
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- W3090861572 doi "https://doi.org/10.1016/j.matchar.2020.110678" @default.
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