TY - JOUR
T1 - Microstructures and mechanical properties of metastable Ti-30Zr-(Cr, Mo) alloys with changeable Young's modulus for spinal fixation applications
AU - Zhao, Xiaoli
AU - Niinomi, Mitsuo
AU - Nakai, Masaaki
AU - Miyamoto, Goro
AU - Furuhara, Tadashi
N1 - Funding Information:
This work was partly supported by the Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists (JSPS) (Tokyo, Japan), the Global COE program “Materials Integration International Center of Education and Research, Tohoku University”, the Ministry of Education, Culture, Sports, Science and Technology, Japan, and the Industrial Technology Research Grant Program, 2009, of the New Energy and Industrial Technology Development Organization, Japan.
PY - 2011/8
Y1 - 2011/8
N2 - In order to develop a novel alloy with a changeable Young's modulus for spinal fixation applications, we investigated the microstructures, Young's moduli, and tensile properties of metastable Ti-30Zr-(Cr, Mo) alloys subjected to solution treatment (ST) and cold rolling (CR). All the alloys comprise a β phase and small athermal ω phase, and they exhibit low Young's moduli after ST. During CR, deformation-induced phase transformation occurs in all the alloys. The change in Young's modulus after CR is highly dependent on the type of deformation-induced phase. The increase in Young's modulus after CR is attributed to the deformation-induced ω phase on {3 3 2} mechanical twinning. Ti-30Zr-3Cr-3Mo (3Cr3Mo), which exhibits excellent tensile properties and a changeable Young's modulus, shows a smaller springback than Ti-29Nb-13Ta-4.6Zr, a β-type titanium alloy expected to be useful in spinal fixation applications. Thus, 3Cr3Mo is a potential candidate for spinal fixation applications.
AB - In order to develop a novel alloy with a changeable Young's modulus for spinal fixation applications, we investigated the microstructures, Young's moduli, and tensile properties of metastable Ti-30Zr-(Cr, Mo) alloys subjected to solution treatment (ST) and cold rolling (CR). All the alloys comprise a β phase and small athermal ω phase, and they exhibit low Young's moduli after ST. During CR, deformation-induced phase transformation occurs in all the alloys. The change in Young's modulus after CR is highly dependent on the type of deformation-induced phase. The increase in Young's modulus after CR is attributed to the deformation-induced ω phase on {3 3 2} mechanical twinning. Ti-30Zr-3Cr-3Mo (3Cr3Mo), which exhibits excellent tensile properties and a changeable Young's modulus, shows a smaller springback than Ti-29Nb-13Ta-4.6Zr, a β-type titanium alloy expected to be useful in spinal fixation applications. Thus, 3Cr3Mo is a potential candidate for spinal fixation applications.
KW - Deformation-induced phase
KW - Mechanical properties
KW - Microstructure
KW - Ti alloy
KW - Young's modulus
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U2 - 10.1016/j.actbio.2011.04.019
DO - 10.1016/j.actbio.2011.04.019
M3 - Article
C2 - 21569873
AN - SCOPUS:79959825021
VL - 7
SP - 3230
EP - 3236
JO - Acta Biomaterialia
JF - Acta Biomaterialia
SN - 1742-7061
IS - 8
ER -