RT Journal Article
T1 Laser-deposited beta type Ti-42Nb alloy with anisotropic mechanical properties for pioneering biomedical implants with a very low elastic modulus
A1 Arias González, Felipe
A1 Rodríguez Contreras, Alejandra
A1 Punset, Miquel
A1 Manero, José María
A1 Barro Guizán, Óscar
A1 Fernández Arias, Mónica
A1 Lusquiños Rodríguez, Fernando
A1 Gil Castaño, Javier
A1 Pou Saracho, Juan María
K1 2209.10 láseres
K1 2211 Física del Estado Sólido
K1 3312.12 Ensayo de Materiales
AB Present commercial titanium alloy implants have an elastic modulus higher than 100 GPa, whereas that of the cortical bone is much smaller (17–28 GPa). This elastic modulus mismatch produces a stress shielding effect and the resorption of the bone surrounding the implant. In the present work, a <100> fiber texture is developed in β type Ti-42Nb (wt%) alloy ingots generated by laser-directed energy deposition (LDED) in order to achieve anisotropic mechanical properties. In addition, we demonstrate that laser-deposited β type Ti-42Nb alloy ingots with an intense <100> fiber texture exhibit a very low elastic modulus in the building direction (Ez < 50 GPa) and high yield (σ0.2z > 700 MPa) and tensile (UTSz > 700 MPa) strengths. Laser-deposited Ti-42Nb alloy enhances the osteoinductive effect, promoting the adhesion, proliferation, and spreading of human osteoblast-like cells. Hence, we propose that laser-deposited β type Ti-42Nb alloy is a potentially promising candidate for the manufacturing of pioneering biomedical implants with a very low elastic modulus that can suppress stress shielding.
PB Materials
SN 19961944
YR 2022
FD 2022-10-14
LK http://hdl.handle.net/11093/6644
UL http://hdl.handle.net/11093/6644
LA eng
NO Materials, 15(20): 7172 (2022)
NO Xunta de Galicia | Ref. ED431C 2019/2
DS Investigo
RD 08-sep-2024