Novel high specific-strength multi-topology Al-Ni-Ti-Zr-Mn alloy using laser powder bed fusion additive manufacturing
Additive manufacturing has opened a paradigm for the efficient and quick production of lightweight lattice structures showing characteristic high specific strength (strength-to-weight ratios). The current study describes the development of methodology and utilization of high strength Al alloy for bu...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
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| Series: | Additive Manufacturing Letters |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772369025000416 |
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| Summary: | Additive manufacturing has opened a paradigm for the efficient and quick production of lightweight lattice structures showing characteristic high specific strength (strength-to-weight ratios). The current study describes the development of methodology and utilization of high strength Al alloy for building complex lattice using additive manufacturing. Thin plate lattice <1 mm of Al-Ni-Ti-Zr-Mn alloy with wide processing window, achieving an average yield strength of 63.13±3.32 MPa in compression, with 28 % lower density than Ti-6Al-4V demonstrates a successful design of Al-Ni-Ti-Zr-Mn alloys using laser beam powder bed fusion (PBF-LB). The mitigation of cracks within thin plate parallel to the loading axis was achieved through the formation of Al-Al₃Ni eutectic channels, exploiting the rapid solidification of this short-freezing-range alloy. In addition to multi-topology structural design, the enhanced strength is attributed to hierarchical microstructure featuring L1₂ phases, bimodal grain distribution, and solid solution strengthening by Mn. This work establishes a printability-performance synergy of Al-Ni-Ti-Zr-Mn alloy for thin plate complex lattice, advancing the use of metamaterials through PBF-LB. |
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| ISSN: | 2772-3690 |