Nanoindentation study of ultrafine-grained titanium-based materials
Конференцијски прилог (Објављена верзија)
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The commercially pure titanium (cpTi) and especially titanium (Ti) alloys are materials increasingly
used in orthopaedic and dental implants. In order to enhance the implant material properties, Ti-based materials may be modified by severe plastic deformation (SPD) methods. One of the most attractive SPD methods is high-pressure torsion (HPT), as a method for obtaining submicron-sized grains, with the aim to improve, among others, mechanical properties of metallic materials. In the present study, ultrafine-grained titanium (UFG cpTi) and ultrafine-grained Ti-13Nb-13Zr (UFG TNZ) alloy samples were obtained by high pressure torsion (HPT) under a pressure of 4.1 GPa with a rotational speed of 0.2 rpm up to 5 rotations at room temperature. The homogeneity of the material was determined by using Vickers microhardness tester and analysing the obtained microhardness profile along the samples diameters. The results show that materials are reasonably homogeneous after HPT processing. The aim o...f this study is to determine the mechanical behaviour of the commercially pure titanium and titanium alloy before and after HPT processing using the nanoindentation technique. Obtained results show that ultrafine-grained materials have lower modulus of elasticity than coarsegrained (CG) materials, which means that the values are closer to those of bones, making the discontinuity of mechanical properties at the bone-implant interface less pronounced. On the other hand, UFG materials have higher values of nanohardness than CG materials.
Кључне речи:
biomaterials, high pressure torsion, modulus of elasticity, nanoindentation, titanium alloysИзвор:
Proceedings of TEAM 2018 9 th International Scientific and Expert Conference, 2018, 117-122Издавач:
- Univerzitet u Novom Sadu, Fakultet tehničkih nauka
Финансирање / пројекти:
- Микромеханички критеријуми оштећења и лома (RS-MESTD-Basic Research (BR or ON)-174004)
Институција/група
Tehnološko-metalurški fakultetTY - CONF AU - Barjaktarević, Dragana AU - Rakin, Marko AU - Međo, Bojan AU - Đokić, Veljko PY - 2018 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5250 AB - The commercially pure titanium (cpTi) and especially titanium (Ti) alloys are materials increasingly used in orthopaedic and dental implants. In order to enhance the implant material properties, Ti-based materials may be modified by severe plastic deformation (SPD) methods. One of the most attractive SPD methods is high-pressure torsion (HPT), as a method for obtaining submicron-sized grains, with the aim to improve, among others, mechanical properties of metallic materials. In the present study, ultrafine-grained titanium (UFG cpTi) and ultrafine-grained Ti-13Nb-13Zr (UFG TNZ) alloy samples were obtained by high pressure torsion (HPT) under a pressure of 4.1 GPa with a rotational speed of 0.2 rpm up to 5 rotations at room temperature. The homogeneity of the material was determined by using Vickers microhardness tester and analysing the obtained microhardness profile along the samples diameters. The results show that materials are reasonably homogeneous after HPT processing. The aim of this study is to determine the mechanical behaviour of the commercially pure titanium and titanium alloy before and after HPT processing using the nanoindentation technique. Obtained results show that ultrafine-grained materials have lower modulus of elasticity than coarsegrained (CG) materials, which means that the values are closer to those of bones, making the discontinuity of mechanical properties at the bone-implant interface less pronounced. On the other hand, UFG materials have higher values of nanohardness than CG materials. PB - Univerzitet u Novom Sadu, Fakultet tehničkih nauka C3 - Proceedings of TEAM 2018 9 th International Scientific and Expert Conference T1 - Nanoindentation study of ultrafine-grained titanium-based materials EP - 122 SP - 117 UR - https://hdl.handle.net/21.15107/rcub_technorep_5250 ER -
@conference{ author = "Barjaktarević, Dragana and Rakin, Marko and Međo, Bojan and Đokić, Veljko", year = "2018", abstract = "The commercially pure titanium (cpTi) and especially titanium (Ti) alloys are materials increasingly used in orthopaedic and dental implants. In order to enhance the implant material properties, Ti-based materials may be modified by severe plastic deformation (SPD) methods. One of the most attractive SPD methods is high-pressure torsion (HPT), as a method for obtaining submicron-sized grains, with the aim to improve, among others, mechanical properties of metallic materials. In the present study, ultrafine-grained titanium (UFG cpTi) and ultrafine-grained Ti-13Nb-13Zr (UFG TNZ) alloy samples were obtained by high pressure torsion (HPT) under a pressure of 4.1 GPa with a rotational speed of 0.2 rpm up to 5 rotations at room temperature. The homogeneity of the material was determined by using Vickers microhardness tester and analysing the obtained microhardness profile along the samples diameters. The results show that materials are reasonably homogeneous after HPT processing. The aim of this study is to determine the mechanical behaviour of the commercially pure titanium and titanium alloy before and after HPT processing using the nanoindentation technique. Obtained results show that ultrafine-grained materials have lower modulus of elasticity than coarsegrained (CG) materials, which means that the values are closer to those of bones, making the discontinuity of mechanical properties at the bone-implant interface less pronounced. On the other hand, UFG materials have higher values of nanohardness than CG materials.", publisher = "Univerzitet u Novom Sadu, Fakultet tehničkih nauka", journal = "Proceedings of TEAM 2018 9 th International Scientific and Expert Conference", title = "Nanoindentation study of ultrafine-grained titanium-based materials", pages = "122-117", url = "https://hdl.handle.net/21.15107/rcub_technorep_5250" }
Barjaktarević, D., Rakin, M., Međo, B.,& Đokić, V.. (2018). Nanoindentation study of ultrafine-grained titanium-based materials. in Proceedings of TEAM 2018 9 th International Scientific and Expert Conference Univerzitet u Novom Sadu, Fakultet tehničkih nauka., 117-122. https://hdl.handle.net/21.15107/rcub_technorep_5250
Barjaktarević D, Rakin M, Međo B, Đokić V. Nanoindentation study of ultrafine-grained titanium-based materials. in Proceedings of TEAM 2018 9 th International Scientific and Expert Conference. 2018;:117-122. https://hdl.handle.net/21.15107/rcub_technorep_5250 .
Barjaktarević, Dragana, Rakin, Marko, Međo, Bojan, Đokić, Veljko, "Nanoindentation study of ultrafine-grained titanium-based materials" in Proceedings of TEAM 2018 9 th International Scientific and Expert Conference (2018):117-122, https://hdl.handle.net/21.15107/rcub_technorep_5250 .