Post-Processing Treatment Impact on Mechanical Properties of SLM Deposited Ti-6Al-4 V Porous Structure for Biomedical Application
Additive manufacturing technologies allow producing a regular three-dimensional mesh of interconnected struts that form an open-cell porous structure. Regular porous structures have been used in the orthopedic industry due to outstanding bone anchoring. The aim of the study was to determine how the...
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MDPI AG
2020-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/22/5167 |
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| author | Eren Pehlivan Jan Džugan Jaroslav Fojt Radek Sedláček Sylwia Rzepa Matej Daniel |
| author_facet | Eren Pehlivan Jan Džugan Jaroslav Fojt Radek Sedláček Sylwia Rzepa Matej Daniel |
| author_sort | Eren Pehlivan |
| collection | DOAJ |
| description | Additive manufacturing technologies allow producing a regular three-dimensional mesh of interconnected struts that form an open-cell porous structure. Regular porous structures have been used in the orthopedic industry due to outstanding bone anchoring. The aim of the study was to determine how the postprocessing influences the mechanical properties of porous structures made of titanium alloy CL 41TI ELI. The effect of hot isostatic pressing (HIP) as a method of increasing microstructural integrity was investigated here. The influence of surface etching (SE) technique, which was applied to the porous structure for cleaning unmelted titanium powder particles on the surface of connectors from the inner surfaces of a porous structure, was examined in this study. Mechanical properties were investigated by means of compression tests. The results point out that HIP has a minor effect on the mechanical behavior of considered porous structures. The SE is an effective method to clean the surface of a porous structure, which is very important in the case of biomedical applications when loose powder can cause serious health problems. Another effect of the SE is also the strut thickness reduction. Reducing strut thickness of a porous structure with the surface etching decreases its stiffness to the same extent as predicted by the relative density theoretical model but did not result in structural damage. |
| first_indexed | 2024-03-10T14:49:10Z |
| format | Article |
| id | doaj.art-c68c60eb48224d1e928093facb5c816a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T14:49:10Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c68c60eb48224d1e928093facb5c816a2023-11-20T21:09:29ZengMDPI AGMaterials1996-19442020-11-011322516710.3390/ma13225167Post-Processing Treatment Impact on Mechanical Properties of SLM Deposited Ti-6Al-4 V Porous Structure for Biomedical ApplicationEren Pehlivan0Jan Džugan1Jaroslav Fojt2Radek Sedláček3Sylwia Rzepa4Matej Daniel5Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, Technická 1902/4, 16000 Prague, Czech RepublicMechanical Testing and Thermophysical Measurement Department, COMTES FHT a.s., Průmyslová 995, 33441 Dobrany, Czech RepublicDepartment of Metals and Corrosion Engineering, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech RepublicDepartment of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, Technická 1902/4, 16000 Prague, Czech RepublicMechanical Testing and Thermophysical Measurement Department, COMTES FHT a.s., Průmyslová 995, 33441 Dobrany, Czech RepublicDepartment of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, Czech Technical University in Prague, Technická 1902/4, 16000 Prague, Czech RepublicAdditive manufacturing technologies allow producing a regular three-dimensional mesh of interconnected struts that form an open-cell porous structure. Regular porous structures have been used in the orthopedic industry due to outstanding bone anchoring. The aim of the study was to determine how the postprocessing influences the mechanical properties of porous structures made of titanium alloy CL 41TI ELI. The effect of hot isostatic pressing (HIP) as a method of increasing microstructural integrity was investigated here. The influence of surface etching (SE) technique, which was applied to the porous structure for cleaning unmelted titanium powder particles on the surface of connectors from the inner surfaces of a porous structure, was examined in this study. Mechanical properties were investigated by means of compression tests. The results point out that HIP has a minor effect on the mechanical behavior of considered porous structures. The SE is an effective method to clean the surface of a porous structure, which is very important in the case of biomedical applications when loose powder can cause serious health problems. Another effect of the SE is also the strut thickness reduction. Reducing strut thickness of a porous structure with the surface etching decreases its stiffness to the same extent as predicted by the relative density theoretical model but did not result in structural damage.https://www.mdpi.com/1996-1944/13/22/5167selective laser meltingtitanium alloyadditive manufacturing (AM)surface treatmenthot isostatic pressing (HIP) |
| spellingShingle | Eren Pehlivan Jan Džugan Jaroslav Fojt Radek Sedláček Sylwia Rzepa Matej Daniel Post-Processing Treatment Impact on Mechanical Properties of SLM Deposited Ti-6Al-4 V Porous Structure for Biomedical Application Materials selective laser melting titanium alloy additive manufacturing (AM) surface treatment hot isostatic pressing (HIP) |
| title | Post-Processing Treatment Impact on Mechanical Properties of SLM Deposited Ti-6Al-4 V Porous Structure for Biomedical Application |
| title_full | Post-Processing Treatment Impact on Mechanical Properties of SLM Deposited Ti-6Al-4 V Porous Structure for Biomedical Application |
| title_fullStr | Post-Processing Treatment Impact on Mechanical Properties of SLM Deposited Ti-6Al-4 V Porous Structure for Biomedical Application |
| title_full_unstemmed | Post-Processing Treatment Impact on Mechanical Properties of SLM Deposited Ti-6Al-4 V Porous Structure for Biomedical Application |
| title_short | Post-Processing Treatment Impact on Mechanical Properties of SLM Deposited Ti-6Al-4 V Porous Structure for Biomedical Application |
| title_sort | post processing treatment impact on mechanical properties of slm deposited ti 6al 4 v porous structure for biomedical application |
| topic | selective laser melting titanium alloy additive manufacturing (AM) surface treatment hot isostatic pressing (HIP) |
| url | https://www.mdpi.com/1996-1944/13/22/5167 |
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