TY - GEN
T1 - Super elastic functional β titanium alloy with low young's modulus for biomedical applications
AU - Niinomi, M.
AU - Akahori, T.
AU - Hattori, Y.
AU - Morikaw, K.
AU - Kasugu, T.
AU - Fukui, H.
AU - Suzuki, A.
AU - Kyo, K.
AU - Niwa, S.
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - The low modulus β type titanium alloy, Ti-29Nb-13Ta-4.6Zr, was designed, and then the practical level ingot of the alloy was successfully fabricated by Levicast method. The mechanical and biological compatibilities, and super elastic behavior of the alloys were investigated in this study. The mechanical performance of tensile properties and fatigue strength of the alloy are equal to or greater than those of conventional biomedical Ti-6Al-4V ELI. Young's modulus of the alloy is much lower than that of Ti-6Al-4V ELI, and increases with the precipitation of α phase or ω phase in the β matrix phase. The compatibility of the alloy with bone is excellent. Low modulus of the alloy is effective to enhance the healing of bone fracture and remodeling of bone. Super elastic behavior is observed in Ti-29Nb-13Ta-4.6Zr conducted with short time solution treatment after heavy cold working. Total elastic strain in that case is around 2.8 %. The mechanism of the super elastic behavior of Ti-29Nb-13Ta-4.6Zr is still unclear.
AB - The low modulus β type titanium alloy, Ti-29Nb-13Ta-4.6Zr, was designed, and then the practical level ingot of the alloy was successfully fabricated by Levicast method. The mechanical and biological compatibilities, and super elastic behavior of the alloys were investigated in this study. The mechanical performance of tensile properties and fatigue strength of the alloy are equal to or greater than those of conventional biomedical Ti-6Al-4V ELI. Young's modulus of the alloy is much lower than that of Ti-6Al-4V ELI, and increases with the precipitation of α phase or ω phase in the β matrix phase. The compatibility of the alloy with bone is excellent. Low modulus of the alloy is effective to enhance the healing of bone fracture and remodeling of bone. Super elastic behavior is observed in Ti-29Nb-13Ta-4.6Zr conducted with short time solution treatment after heavy cold working. Total elastic strain in that case is around 2.8 %. The mechanism of the super elastic behavior of Ti-29Nb-13Ta-4.6Zr is still unclear.
KW - Biocompatibility
KW - Biomedical application
KW - Low modulus
KW - Super elastic behavior
KW - Ti-29Nb-13Ta-4.6Zr
KW - β-type titanium alloy
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M3 - Conference contribution
AN - SCOPUS:33744813004
SN - 0803134975
SN - 9780803134973
T3 - ASTM Special Technical Publication
SP - 135
EP - 150
BT - Titanium, Niobium, Zirconium, and Tantalum for Medical and Surgical Applications
PB - American Society for Testing and Materials
T2 - ASTM Symposiun on Titanium, Niobium, Zirconium, and Tantalum for Medical and Surgical Applications
Y2 - 9 November 2005 through 10 November 2005
ER -