Influence of β-Stabilizer Element on Microstructure and Mechanical Behavior of Porous Titanium Alloy Synthesized by Liquid Metal Dealloying
The metallic implant materials for load-bearing applications typically possess a significantly higher stiffness when compared with that of human bone. In some cases, this stiffness mismatch leads to a stress-shielding effect and eventual loosing of the implant. Porous metallic materials are suitable...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-08-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/16/16/5699 |
| _version_ | 1797583992325668864 |
|---|---|
| author | Artem Okulov Stefan Berger Ilya Okulov |
| author_facet | Artem Okulov Stefan Berger Ilya Okulov |
| author_sort | Artem Okulov |
| collection | DOAJ |
| description | The metallic implant materials for load-bearing applications typically possess a significantly higher stiffness when compared with that of human bone. In some cases, this stiffness mismatch leads to a stress-shielding effect and eventual loosing of the implant. Porous metallic materials are suitable candidates to overcome this problem. In this study, we synthesized low modulus open porous TiFe alloy by liquid metal dealloying of the precursor Ti<sub>47.5</sub>Fe<sub>2.5</sub>Cu<sub>50</sub> (at.%) material in liquid Mg. Upon liquid metal dealloying, Cu was selectively dissolved from the precursor, and the remaining Ti and Fe elements were reorganized into a bicontinous porous structure. The synthesized TiFe alloy is composed of α-titanium and β-titanium phases. The average measured ligament size is in the micrometer range. It was found that a higher dealloying temperature leads to a pronounced coarsening of the microstructure. The open porous TiFe alloy possesses a low elastic modulus of about 6.4–6.9 GPa. At the same time, its yield strength value reaches about 185 MPa due to the α + β microstructure. Its attractive mechanical properties for biomedical applications, together with its open porous structure, indicate the potential of porous TiFe alloys to be used as implants. |
| first_indexed | 2024-03-10T23:46:57Z |
| format | Article |
| id | doaj.art-dadea2703d8d4277b6c154781e35c8f3 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T23:46:57Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-dadea2703d8d4277b6c154781e35c8f32023-11-19T02:01:30ZengMDPI AGMaterials1996-19442023-08-011616569910.3390/ma16165699Influence of β-Stabilizer Element on Microstructure and Mechanical Behavior of Porous Titanium Alloy Synthesized by Liquid Metal DealloyingArtem Okulov0Stefan Berger1Ilya Okulov2Division of Materials Mechanics, Institute of Materials Research, Helmholtz-Zentrum Hereon, 21502 Geesthacht, GermanyDivision of Materials Mechanics, Institute of Materials Research, Helmholtz-Zentrum Hereon, 21502 Geesthacht, GermanyDepartment of Particles and Process Engineering, University of Bremen, Badgasteiner Str. 1, 28359 Bremen, GermanyThe metallic implant materials for load-bearing applications typically possess a significantly higher stiffness when compared with that of human bone. In some cases, this stiffness mismatch leads to a stress-shielding effect and eventual loosing of the implant. Porous metallic materials are suitable candidates to overcome this problem. In this study, we synthesized low modulus open porous TiFe alloy by liquid metal dealloying of the precursor Ti<sub>47.5</sub>Fe<sub>2.5</sub>Cu<sub>50</sub> (at.%) material in liquid Mg. Upon liquid metal dealloying, Cu was selectively dissolved from the precursor, and the remaining Ti and Fe elements were reorganized into a bicontinous porous structure. The synthesized TiFe alloy is composed of α-titanium and β-titanium phases. The average measured ligament size is in the micrometer range. It was found that a higher dealloying temperature leads to a pronounced coarsening of the microstructure. The open porous TiFe alloy possesses a low elastic modulus of about 6.4–6.9 GPa. At the same time, its yield strength value reaches about 185 MPa due to the α + β microstructure. Its attractive mechanical properties for biomedical applications, together with its open porous structure, indicate the potential of porous TiFe alloys to be used as implants.https://www.mdpi.com/1996-1944/16/16/5699liquid metal dealloyingporous materialtitanium alloybiomedical materialmechanical behavior |
| spellingShingle | Artem Okulov Stefan Berger Ilya Okulov Influence of β-Stabilizer Element on Microstructure and Mechanical Behavior of Porous Titanium Alloy Synthesized by Liquid Metal Dealloying Materials liquid metal dealloying porous material titanium alloy biomedical material mechanical behavior |
| title | Influence of β-Stabilizer Element on Microstructure and Mechanical Behavior of Porous Titanium Alloy Synthesized by Liquid Metal Dealloying |
| title_full | Influence of β-Stabilizer Element on Microstructure and Mechanical Behavior of Porous Titanium Alloy Synthesized by Liquid Metal Dealloying |
| title_fullStr | Influence of β-Stabilizer Element on Microstructure and Mechanical Behavior of Porous Titanium Alloy Synthesized by Liquid Metal Dealloying |
| title_full_unstemmed | Influence of β-Stabilizer Element on Microstructure and Mechanical Behavior of Porous Titanium Alloy Synthesized by Liquid Metal Dealloying |
| title_short | Influence of β-Stabilizer Element on Microstructure and Mechanical Behavior of Porous Titanium Alloy Synthesized by Liquid Metal Dealloying |
| title_sort | influence of β stabilizer element on microstructure and mechanical behavior of porous titanium alloy synthesized by liquid metal dealloying |
| topic | liquid metal dealloying porous material titanium alloy biomedical material mechanical behavior |
| url | https://www.mdpi.com/1996-1944/16/16/5699 |
| work_keys_str_mv | AT artemokulov influenceofbstabilizerelementonmicrostructureandmechanicalbehaviorofporoustitaniumalloysynthesizedbyliquidmetaldealloying AT stefanberger influenceofbstabilizerelementonmicrostructureandmechanicalbehaviorofporoustitaniumalloysynthesizedbyliquidmetaldealloying AT ilyaokulov influenceofbstabilizerelementonmicrostructureandmechanicalbehaviorofporoustitaniumalloysynthesizedbyliquidmetaldealloying |