Spatial Topological Structure Design of Porous Ti–6Al–4V Alloy with Low Modulus and Magnetic Susceptibility
Ti–6Al–4V alloy is widely used as a biomaterial for hard tissue replacement, but its Young’s modulus is still higher than that of human bone tissue, which may cause a “stress shielding” effect and lead to implant loosening. In addition, metal implants with low magnetic susceptibility are beneficial...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-12-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/13/24/3113 |
| _version_ | 1827573946561593344 |
|---|---|
| author | Qian Li Qiang Li Shasha Lu Deng Pan |
| author_facet | Qian Li Qiang Li Shasha Lu Deng Pan |
| author_sort | Qian Li |
| collection | DOAJ |
| description | Ti–6Al–4V alloy is widely used as a biomaterial for hard tissue replacement, but its Young’s modulus is still higher than that of human bone tissue, which may cause a “stress shielding” effect and lead to implant loosening. In addition, metal implants with low magnetic susceptibility are beneficial for obtaining minimal artifacts in magnetic resonance imaging. To reduce Young’s modulus and magnetic susceptibility of Ti–6Al–4V alloy, a series of irregular prismatic porous structure models were designed based on the Voronoi principle, built by changing the irregularity, prism-diameter-to-initial-seed-spacing ratio, and seed number, and studied using finite-element analysis. Porous samples were prepared by selective laser melting and subjected to a compression test and magnetic susceptibility test. The simulation results show that the prism-diameter-to-initial-seed-spacing ratio has the greatest impact on porosity compared with the irregularity and seed number. The simulation-predicted porosity and compression modulus are highly consistent with the measured ones. The irregular prismatic porous Ti–6Al–4V samples exhibit mechanical properties similar to those of human bones and show a magnetic susceptibility of no more than 50% that of compact Ti–6Al–4V. A regulatable irregular prismatic porous structure is feasible for designing porous implants with desirable properties for biomedical applications. |
| first_indexed | 2024-03-08T20:29:22Z |
| format | Article |
| id | doaj.art-cbdd458b0ecd4b1db6f0507de78f7fe8 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-08T20:29:22Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-cbdd458b0ecd4b1db6f0507de78f7fe82023-12-22T14:29:06ZengMDPI AGNanomaterials2079-49912023-12-011324311310.3390/nano13243113Spatial Topological Structure Design of Porous Ti–6Al–4V Alloy with Low Modulus and Magnetic SusceptibilityQian Li0Qiang Li1Shasha Lu2Deng Pan3School of Mechanical Engineering, University of Shanghai for Science & Technology, No. 516 Jungong Road, Shanghai 200093, ChinaSchool of Mechanical Engineering, University of Shanghai for Science & Technology, No. 516 Jungong Road, Shanghai 200093, ChinaSchool of Mechanical Engineering, University of Shanghai for Science & Technology, No. 516 Jungong Road, Shanghai 200093, ChinaMaterials Genome Institute, Shanghai University, No. 99 Shangda Road, Shanghai 200444, ChinaTi–6Al–4V alloy is widely used as a biomaterial for hard tissue replacement, but its Young’s modulus is still higher than that of human bone tissue, which may cause a “stress shielding” effect and lead to implant loosening. In addition, metal implants with low magnetic susceptibility are beneficial for obtaining minimal artifacts in magnetic resonance imaging. To reduce Young’s modulus and magnetic susceptibility of Ti–6Al–4V alloy, a series of irregular prismatic porous structure models were designed based on the Voronoi principle, built by changing the irregularity, prism-diameter-to-initial-seed-spacing ratio, and seed number, and studied using finite-element analysis. Porous samples were prepared by selective laser melting and subjected to a compression test and magnetic susceptibility test. The simulation results show that the prism-diameter-to-initial-seed-spacing ratio has the greatest impact on porosity compared with the irregularity and seed number. The simulation-predicted porosity and compression modulus are highly consistent with the measured ones. The irregular prismatic porous Ti–6Al–4V samples exhibit mechanical properties similar to those of human bones and show a magnetic susceptibility of no more than 50% that of compact Ti–6Al–4V. A regulatable irregular prismatic porous structure is feasible for designing porous implants with desirable properties for biomedical applications.https://www.mdpi.com/2079-4991/13/24/3113porous structurecompression propertieslow modulusmagnetic susceptibility |
| spellingShingle | Qian Li Qiang Li Shasha Lu Deng Pan Spatial Topological Structure Design of Porous Ti–6Al–4V Alloy with Low Modulus and Magnetic Susceptibility Nanomaterials porous structure compression properties low modulus magnetic susceptibility |
| title | Spatial Topological Structure Design of Porous Ti–6Al–4V Alloy with Low Modulus and Magnetic Susceptibility |
| title_full | Spatial Topological Structure Design of Porous Ti–6Al–4V Alloy with Low Modulus and Magnetic Susceptibility |
| title_fullStr | Spatial Topological Structure Design of Porous Ti–6Al–4V Alloy with Low Modulus and Magnetic Susceptibility |
| title_full_unstemmed | Spatial Topological Structure Design of Porous Ti–6Al–4V Alloy with Low Modulus and Magnetic Susceptibility |
| title_short | Spatial Topological Structure Design of Porous Ti–6Al–4V Alloy with Low Modulus and Magnetic Susceptibility |
| title_sort | spatial topological structure design of porous ti 6al 4v alloy with low modulus and magnetic susceptibility |
| topic | porous structure compression properties low modulus magnetic susceptibility |
| url | https://www.mdpi.com/2079-4991/13/24/3113 |
| work_keys_str_mv | AT qianli spatialtopologicalstructuredesignofporousti6al4valloywithlowmodulusandmagneticsusceptibility AT qiangli spatialtopologicalstructuredesignofporousti6al4valloywithlowmodulusandmagneticsusceptibility AT shashalu spatialtopologicalstructuredesignofporousti6al4valloywithlowmodulusandmagneticsusceptibility AT dengpan spatialtopologicalstructuredesignofporousti6al4valloywithlowmodulusandmagneticsusceptibility |