Enhancing the energy absorption capacity of Ti–6Al–4V lattice structure manufactured by additive manufacturing through β-annealing
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 tr...
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425002145 |
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| author | Yi Ren Wei Ran Yongxun Li Bowen Xue Wei Chen |
| author_facet | Yi Ren Wei Ran Yongxun Li Bowen Xue Wei Chen |
| author_sort | Yi Ren |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-0318df9c698645fcb196a9d13263e37b |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-0318df9c698645fcb196a9d13263e37b2025-01-31T05:11:25ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013523692376Enhancing the energy absorption capacity of Ti–6Al–4V lattice structure manufactured by additive manufacturing through β-annealingYi Ren0Wei Ran1Yongxun Li2Bowen Xue3Wei Chen4School of Aeronautics, Chongqing Jiaotong University, Chongqing, 400074, China; Corresponding author.School of Aeronautics, Chongqing Jiaotong University, Chongqing, 400074, ChinaSchool of Aeronautics, Chongqing Jiaotong University, Chongqing, 400074, ChinaSchool of Aeronautics, Chongqing Jiaotong University, Chongqing, 400074, ChinaSchool of Aeronautics, Chongqing Jiaotong University, Chongqing, 400074, China; Chongqing Key Laboratory of Green Aviation Energy and Power, Chongqing Jiaotong University, Chongqing, 400074, ChinaThe 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.http://www.sciencedirect.com/science/article/pii/S2238785425002145Laser powder bed fusionTitanium alloyLattice structureHeat treatmentEnergy absorption |
| spellingShingle | Yi Ren Wei Ran Yongxun Li Bowen Xue Wei Chen Enhancing the energy absorption capacity of Ti–6Al–4V lattice structure manufactured by additive manufacturing through β-annealing Journal of Materials Research and Technology Laser powder bed fusion Titanium alloy Lattice structure Heat treatment Energy absorption |
| title | Enhancing the energy absorption capacity of Ti–6Al–4V lattice structure manufactured by additive manufacturing through β-annealing |
| title_full | Enhancing the energy absorption capacity of Ti–6Al–4V lattice structure manufactured by additive manufacturing through β-annealing |
| title_fullStr | Enhancing the energy absorption capacity of Ti–6Al–4V lattice structure manufactured by additive manufacturing through β-annealing |
| title_full_unstemmed | Enhancing the energy absorption capacity of Ti–6Al–4V lattice structure manufactured by additive manufacturing through β-annealing |
| title_short | Enhancing the energy absorption capacity of Ti–6Al–4V lattice structure manufactured by additive manufacturing through β-annealing |
| title_sort | enhancing the energy absorption capacity of ti 6al 4v lattice structure manufactured by additive manufacturing through β annealing |
| topic | Laser powder bed fusion Titanium alloy Lattice structure Heat treatment Energy absorption |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425002145 |
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