Laser powder bed fusion of a Cu-Ni-Al alloy using the compositional grading approach

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Laser powder bed fusion of a Cu-Ni-Al alloy using the compositional grading approach
Title:
Laser powder bed fusion of a Cu-Ni-Al alloy using the compositional grading approach
Journal Title:
Scripta Materialia
Keywords:
Publication Date:
27 March 2023
Citation:
Wei, S., Zhao, Y., Li, S.-H., Chen, S., Lau, K. B., Soh, V., Lee, J. J., Zhang, B., Tan, C. C., Wang, P., & Ramamurty, U. (2023). Laser powder bed fusion of a Cu-Ni-Al alloy using the compositional grading approach. Scripta Materialia, 231, 115441. https://doi.org/10.1016/j.scriptamat.2023.115441
Abstract:
Using a modified laser powder bed fusion (LPBF) technique, a compositionally graded Cu-Ni alloy was fabricated. Through microstructural and mechanical characterization on the samples extracted from it, the addition of 7.6 wt.% Ni to Cu is identified as the minimum required for obtaining a crack-free and nearly-fully-dense coupons using LPBF. Subsequently, 3 wt.% Al was added to the Cu-7.6 wt.% alloy to deplete the solute Ni atoms from the matrix through the precipitation of Ni3Al upon aging of the LPBF Cu-Ni-Al alloy, which simultaneously enhances the strength and electrical conductance of the alloy. Through this example, we demonstrate the potential of high-throughput screening of alloys suitable for LPBF through the fabrication of the compositionally graded alloys and subsequent alloy design for optimum property combinations.
License type:
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Funding Info:
This research / project is supported by the Agency for Science, Technology and Research - Structural Metal Alloys Programme
Grant Reference no. : A18B1b0061

This research / project is supported by the Agency for Science, Technology and Research - Individual Research Grant
Grant Reference no. : A20E7c0109
Description:
ISSN:
1359-6462
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