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| Journal Article | PUBDB-2022-02555 |
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2022
Elsevier
Amsterdam [u.a.]
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Please use a persistent id in citations: doi:10.1016/j.addma.2022.102847 doi:10.3204/PUBDB-2022-02555
Abstract: CuAl8 alloy finds applications in industrial components, where a good anti-corrosion and anti-wearing propertiesare required. The alloy has a medium strength and a good toughness with an elongation to fracture at roomtemperature of about 40%. Additionally, it has a good electrical conductivity, though lower than that of pure Alor pure Cu. Despite these characteristics, additive manufacturing of the CuAl$_8$ alloy was not yet reported. In thiswork, the direct energy deposition-arc (DED-arc) with and without in-situ hot forging was used to determine themicrostructure evolution and mechanical properties. No internal defects were seen on the parts produced. Hotforging combined with DED-arc was seen to reduce and homogenize the grain size, improve mechanical strengthand isotropy of mechanical properties. Moreover, the use of this novel DED-arc variant was seen to reduce themagnitude of residual stresses throughout the fabricated part. We highlight that this alloy can be processed byDED-arc, and the hot forging operation concomitant with the material deposition has beneficial effects on themicrostructure refinement and homogenization.
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