TY - GEN
T1 - Mechanical performance of newly developed titanium and zirconium system alloys for biomedical applicaions
AU - Akahori, Toshikazu
AU - Niinomi, Mitsuo
AU - Nakai, Masaaki
AU - Tsutsumi, Harumi
AU - Hattori, Tomokazu
AU - Fukui, Hisao
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - A new β-type Ti alloy composed of non-toxic and allergy-free elements like Nb, Ta, and Zr, Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) proposed by present authors, has been developed in order to achieve relatively low Young's modulus and excellent mechanical performance. On the other hand, Zr has been also paid attention as metallic biomaterial for the next generation because of good biocompatibility nearly equal to Ti or a few GPa smaller Young's modulus as compared to one. In this study, mechanical performances such as tensile properties and Young's modulus of TNTZ subjected to thermo-mechanical treatments or severe deformation, and the mechanical properties and biocompatibility of Zr-Nb system alloys were investigated in order to judge their potential for biomedical applications. Young's modulus of as-solutionized TNTZ, which is around 63 GPa, is pretty similar to that of as-cold-rolled TNTZ. The Young's moduli of hot-rolled Ti-6Al-4V ELI alloy are respective around 110 GPa. The Young's moduli of as-solutionized and as-cold-rolled TNTZ are around a half of those, and are twice as large as that of the cortical bone. The tensile strengths of TNTZ aged after solution treatment and those aged after cold rolling decrease with an increase in the aging temperature, although the elongation shows the reverse trend. The tensile strength of as-cold-rolled TNTZ is improved drastically through severe deformation such as high pressure torsion and shows more than 1000 MPa. Zr-XNb system alloy (X: 5-30mass%) shows the smallest value of Young's modulus (around 58 GPa) at Nb content of 20mass%. In the case of implantation of the bars made of Zr-XNb system alloys into the lateral femoral condyles of Japanese white rabbits, the tendency of contact between the cancellous bone and the bar becomes remarkably at 24 weeks after the implantation according to increasing with Nb content.
AB - A new β-type Ti alloy composed of non-toxic and allergy-free elements like Nb, Ta, and Zr, Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) proposed by present authors, has been developed in order to achieve relatively low Young's modulus and excellent mechanical performance. On the other hand, Zr has been also paid attention as metallic biomaterial for the next generation because of good biocompatibility nearly equal to Ti or a few GPa smaller Young's modulus as compared to one. In this study, mechanical performances such as tensile properties and Young's modulus of TNTZ subjected to thermo-mechanical treatments or severe deformation, and the mechanical properties and biocompatibility of Zr-Nb system alloys were investigated in order to judge their potential for biomedical applications. Young's modulus of as-solutionized TNTZ, which is around 63 GPa, is pretty similar to that of as-cold-rolled TNTZ. The Young's moduli of hot-rolled Ti-6Al-4V ELI alloy are respective around 110 GPa. The Young's moduli of as-solutionized and as-cold-rolled TNTZ are around a half of those, and are twice as large as that of the cortical bone. The tensile strengths of TNTZ aged after solution treatment and those aged after cold rolling decrease with an increase in the aging temperature, although the elongation shows the reverse trend. The tensile strength of as-cold-rolled TNTZ is improved drastically through severe deformation such as high pressure torsion and shows more than 1000 MPa. Zr-XNb system alloy (X: 5-30mass%) shows the smallest value of Young's modulus (around 58 GPa) at Nb content of 20mass%. In the case of implantation of the bars made of Zr-XNb system alloys into the lateral femoral condyles of Japanese white rabbits, the tendency of contact between the cancellous bone and the bar becomes remarkably at 24 weeks after the implantation according to increasing with Nb content.
KW - Tensile properties
KW - Titanium-niobium-tantalum-zirconium system alloy
KW - Young's modulus and metallic biomaterials
KW - Zirconium-niobium system alloy
UR - http://www.scopus.com/inward/record.url?scp=75849151486&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=75849151486&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.638-642.495
DO - 10.4028/www.scientific.net/MSF.638-642.495
M3 - Conference contribution
AN - SCOPUS:75849151486
SN - 0878492941
SN - 9780878492947
T3 - Materials Science Forum
SP - 495
EP - 500
BT - THERMEC 2009
A2 - Chandra, Tara
A2 - Chandra, Tara
A2 - Chandra, Tara
A2 - Wanderka, N.
A2 - Wanderka, N.
A2 - Wanderka, N.
A2 - Reimers, Walter
A2 - Reimers, Walter
A2 - Reimers, Walter
A2 - Ionescu, M.
A2 - Ionescu, M.
A2 - Ionescu, M.
PB - Trans Tech Publications Ltd
T2 - 6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009
Y2 - 25 August 2009 through 29 August 2009
ER -