High-throughput synthesis of binary Al–Mn alloys by directed energy deposition with improved accuracy of composition adjustment.
In: Journal of Materials Science, Jg. 59 (2024-06-15), Heft 22, S. 10022-10034
Online
academicJournal
Zugriff:
Directed energy deposition (DED) provides the possibility of high-throughput synthesis by controlling the multi-channel powder feeders. However, the compositional accuracy of the targeted alloy is of concern due to the difficulty of adjusting the proportions. In this work, we present a method to improve the adjustment accuracy of the high-throughput DED technology by replacing the elemental powder with pre-alloyed powder, and binary Al–Mn alloys with different compositions were synthesized with a composition step of 1 wt.%. The effect of Mn content on the microstructure and mechanical properties of the alloys was characterized and analyzed, and the relationship between the Al6Mn phase and the yield strength was established. The results showed that the microstructures of DED-ed Al–Mn alloys are composed of Al and Al6Mn phases with Mn contents in the range of 2–10 wt.%. The Al–Mn alloy reaches a tensile strength of 165 MPa and maintains an elongation of 9% at Mn content of 4 wt.%. The improved controlling accuracy of composition step to 1 wt.% by pre-alloyed powder in this work provides a paradigm for high-throughput discovery of high-performance alloys. [ABSTRACT FROM AUTHOR]
Titel: |
High-throughput synthesis of binary Al–Mn alloys by directed energy deposition with improved accuracy of composition adjustment.
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Autor/in / Beteiligte Person: | Li, Dan ; Wu, Yiyou ; Song, Miao ; Chen, Chao ; Zhou, Kechao |
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Zeitschrift: | Journal of Materials Science, Jg. 59 (2024-06-15), Heft 22, S. 10022-10034 |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 0022-2461 (print) |
DOI: | 10.1007/s10853-024-09462-2 |
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