Enhancing the energy absorption capacity of Ti–6Al–4V lattice structure manufactured by additive manufacturing through β-annealing
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| Titel: | Enhancing the energy absorption capacity of Ti–6Al–4V lattice structure manufactured by additive manufacturing through β-annealing |
|---|---|
| Autoren: | Yi Ren, Wei Ran, Yongxun Li, Bowen Xue, Wei Chen |
| Quelle: | Journal of Materials Research and Technology, Vol 35, Iss, Pp 2369-2376 (2025) |
| Verlagsinformationen: | Elsevier BV, 2025. |
| Publikationsjahr: | 2025 |
| Schlagwörter: | Mining engineering. Metallurgy, Lattice structure, Laser powder bed fusion, Energy absorption, TN1-997, Titanium alloy, Heat treatment |
| Beschreibung: | The geometric configuration and microstructure are crucial for the mechanical properties of the lattice structure formed by laser powder bed fusion (LPBF). In this study, a type of Ti–6Al–4V lattice structure with hexagonal-body-centered (HBC) structure was fabricated by LPBF and post β-annealing treatment. The microstructure, mechanical properties, energy absorption properties and deformation behavior of the Ti–6Al–4V HBC lattice structure was investigated by electron backscatter diffraction (EBSD), quasi-static compression tests and digital image correlation (DIC) techniques. The results showed that the β-annealing sample completely transformed from the αʹ martensitic microstructure to a completely stable α + β lamellar microstructure, which slightly reduced the ultimate compressive strength of the HBC lattice structure and increased the strain at the end of yielding. The β-annealed sample showed better plasticity and work-hardening rate during the loading process, which increased its absorption capacity by 74.7% compared to the un-annealed sample. Finally, the quantitative analysis of fracture morphology indicated that the HBC lattice structure subjected to β-annealing undergoes ductile-brittle fracture, significantly improving its deformation stability. |
| Publikationsart: | Article |
| Sprache: | English |
| ISSN: | 2238-7854 |
| DOI: | 10.1016/j.jmrt.2025.01.214 |
| Zugangs-URL: | https://doaj.org/article/0318df9c698645fcb196a9d13263e37b |
| Rights: | CC BY |
| Dokumentencode: | edsair.doi.dedup.....1f84ea3e9669e1753e64f2b5e67e9025 |
| Datenbank: | OpenAIRE |
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