Microstructure, mechanical, and corrosion properties of B4C/Al composites with excellent ductility fabricated by laser-directed energy deposition
Aluminum matrix boron carbide (B4C/Al) composites with moderate strength but excellent ductility are fabricated by laser-directed energy deposition (LDED) with different laser powers. The microstructural features underlying the outstanding mechanical properties of such fabricated composites have bee...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2025-12-01
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| Series: | Virtual and Physical Prototyping |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/17452759.2025.2505991 |
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| Summary: | Aluminum matrix boron carbide (B4C/Al) composites with moderate strength but excellent ductility are fabricated by laser-directed energy deposition (LDED) with different laser powers. The microstructural features underlying the outstanding mechanical properties of such fabricated composites have been fully explored. The mechanism of the excellent ductility without notably sacrificing strength is attributed to dislocation formation, grain refinement, and precipitation effect, which could therefore advance the state-of-art in the field of B4C/Al composites. The influence of laser power on the microstructure, mechanical, and corrosion properties is also investigated. The composite fabricated by the laser power of 1200 W has the best corrosion resistance. It is found that pitting is the primary type of corrosion of the LDED B4C/Al composites in H3BO3 solution, and it is most likely to occur at the interface between Al and B4C particles. These findings highlight that the LDED process can fabricate high-performance corrosion-resistant composites. |
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| ISSN: | 1745-2759 1745-2767 |