TY - JOUR
T1 - Synthesis of nanostructured biomaterials by high-pressure torsion
T2 - Effect of niobium content on microstructure and mechanical properties of Ti-Nb alloys
AU - Campos-Quirós, Alexánder
AU - Cubero-Sesín, Jorge M.
AU - Edalati, Kaveh
N1 - Funding Information:
The authors would like to thank Ms. Parisa Edalati, Dr. Qing Wang, Dr. Abbas Mohammadi and Prof. Zenji Horita of Kyushu University , as well as the Center for Materials Research and Extension (CIEMTEC) and the School of Materials Science and Engineering from Instituto Tecnológico de Costa Rica for their support during the experimental tests. This work was supported in part by WPI-I2CNER, Kyushu University, Japan , in part by the Light Metals Educational Foundation of Japan , in part by Grants-in-Aid for Scientific Research from MEXT, Japan ( 16H04539 , 19H05176 ), in part by funding from Instituto Tecnológico de Costa Rica (Grant VIE-CF1490018 ), and in part by the Bioengineering Research Program, Cosa Rica.
Funding Information:
The authors would like to thank Ms. Parisa Edalati, Dr. Qing Wang, Dr. Abbas Mohammadi and Prof. Zenji Horita of Kyushu University, as well as the Center for Materials Research and Extension (CIEMTEC) and the School of Materials Science and Engineering from Instituto Tecnol?gico de Costa Rica for their support during the experimental tests. This work was supported in part by WPI-I2CNER, Kyushu University, Japan, in part by the Light Metals Educational Foundation of Japan, in part by Grants-in-Aid for Scientific Research from MEXT, Japan (16H04539, 19H05176), in part by funding from Instituto Tecnol?gico de Costa Rica (Grant VIE-CF1490018), and in part by the Bioengineering Research Program, Cosa Rica.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/9/23
Y1 - 2020/9/23
N2 - Titanium-niobium alloys with the bcc structure (β-Ti-Nb) are recently investigated for their potential use in biomedical applications; however, improvement of their mechanical properties (particularly hardness and elastic modulus) is still a challenge. In this study, nanostructured Ti-Nb alloys with different Nb contents were successfully synthesized by mechanical alloying of elemental powders via high-pressure torsion (HPT). The HPT process led to the homogenous mixture of the two elements and the formation of nanograined β phase. Examination of mechanical properties by nanoindentation and microhardness measurements revealed that all synthesized alloys exhibited high hardness and good plasticity; however, the best combination of low elastic modulus and high hardness was obtained for the sample with 25 at% Nb: E = 39 ± 11 GPa (close to the elasticity of human bone) and Hv = 3.7 ± 0.1 GPa (comparable to the hardest Ti-based biomaterials). The current results confirm the potential of HPT to synthesize nanograined Ti-Nb alloys for future biomedical applications.
AB - Titanium-niobium alloys with the bcc structure (β-Ti-Nb) are recently investigated for their potential use in biomedical applications; however, improvement of their mechanical properties (particularly hardness and elastic modulus) is still a challenge. In this study, nanostructured Ti-Nb alloys with different Nb contents were successfully synthesized by mechanical alloying of elemental powders via high-pressure torsion (HPT). The HPT process led to the homogenous mixture of the two elements and the formation of nanograined β phase. Examination of mechanical properties by nanoindentation and microhardness measurements revealed that all synthesized alloys exhibited high hardness and good plasticity; however, the best combination of low elastic modulus and high hardness was obtained for the sample with 25 at% Nb: E = 39 ± 11 GPa (close to the elasticity of human bone) and Hv = 3.7 ± 0.1 GPa (comparable to the hardest Ti-based biomaterials). The current results confirm the potential of HPT to synthesize nanograined Ti-Nb alloys for future biomedical applications.
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U2 - 10.1016/j.msea.2020.139972
DO - 10.1016/j.msea.2020.139972
M3 - Article
AN - SCOPUS:85088925225
VL - 795
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
M1 - 139972
ER -