TY - JOUR
T1 - Mechanical properties of Ti-6 at.% Mo-4 at.% Sn alloy wires and their application to medical guidewire
AU - Sutou, Y.
AU - Yamauchi, K.
AU - Takagi, T.
AU - Maeshima, T.
AU - Nishida, M.
N1 - Funding Information:
The authors wish to express their thanks to E.S.Q. Inc. and NEC/TOKIN Corporation and their staffs for manufacturing the Ti–Mo–Sn alloy wire, as well as for their helpful advice. This study was supported by Special Coordination Funds for Promoting Science and Technology.
PY - 2006/11/25
Y1 - 2006/11/25
N2 - Effects of heat treatment conditions on mechanical and superelastic properties of Ti-6 at.% Mo-4 at.% Sn alloy were investigated mainly by cyclic tensile testing. The cold-drawn wires were heat-treated in the temperature range of 773-1273 K for 300 s. Young's modulus and ultimate tensile strength of the wires heat-treated at over 823 K decreased with increasing heat treatment temperature, while premature failure was observed in the wire heat-treated at 773 K. A maximum recovery strain of about 4%, including both genuine elastic and superelastic strain, was obtained in the wires heat-treated in the temperature range of 1073-1273 K. On the other hand, the wire heat-treated at 823 K showed a high Young's modulus of 77 GPa and a high tensile strength of 1698 MPa. Given these characteristics, it is expected that a new class of Ni-free Ti-based guidewire possessing mechanical properties graded from the tip to the end can be developed.
AB - Effects of heat treatment conditions on mechanical and superelastic properties of Ti-6 at.% Mo-4 at.% Sn alloy were investigated mainly by cyclic tensile testing. The cold-drawn wires were heat-treated in the temperature range of 773-1273 K for 300 s. Young's modulus and ultimate tensile strength of the wires heat-treated at over 823 K decreased with increasing heat treatment temperature, while premature failure was observed in the wire heat-treated at 773 K. A maximum recovery strain of about 4%, including both genuine elastic and superelastic strain, was obtained in the wires heat-treated in the temperature range of 1073-1273 K. On the other hand, the wire heat-treated at 823 K showed a high Young's modulus of 77 GPa and a high tensile strength of 1698 MPa. Given these characteristics, it is expected that a new class of Ni-free Ti-based guidewire possessing mechanical properties graded from the tip to the end can be developed.
KW - Biomaterial
KW - Minimally invasive device
KW - Shape memory alloy
KW - Superelasticity
KW - Ti-Mo-Sn alloy
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U2 - 10.1016/j.msea.2006.01.116
DO - 10.1016/j.msea.2006.01.116
M3 - Article
AN - SCOPUS:33750442565
SN - 0921-5093
VL - 438-440
SP - 1097
EP - 1100
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - SPEC. ISS.
ER -