Abstract：
:For spinal-fixation applications, implants should have a high Young's modulus to reduce springback during operations, though a low Young's modulus is required to prevent stress shielding for patients after surgeries. In the present study, Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) with a low Young's modulus was modified by adding Cr to obtain a higher deformation-induced Young's modulus in order to satisfy these contradictory requirements. Two newly designed alloys, TNTZ-8Ti-2Cr and TNTZ-16Ti-4Cr, possess more stable β phases than TNTZ. These alloys consist of single β phases and exhibit relatively low Young's moduli of <65GPa after solution treatment. However, after cold rolling, they exhibit higher Young's moduli owing to a deformation-induced ω-phase transformation. These modified TNTZ alloys show significantly less springback than the original TNTZ alloy based on tensile and bending loading-unloading tests. Thus, the Cr-added TNTZ alloys are beneficial for spinal-fixation applications.
journal_name
Acta Biomaterjournal_title
Acta biomaterialiaauthors
Li Q,Niinomi M,Hieda J,Nakai M,Cho Kdoi
10.1016/j.actbio.2013.04.032subject
Has Abstractpub_date
2013-08-01 00:00:00pages
8027-35issue
8eissn
1742-7061issn
1878-7568pii
S1742-7061(13)00204-3journal_volume
9pub_type
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更新日期：2014-06-01 00:00:00
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更新日期：2015-03-01 00:00:00
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更新日期：2019-08-01 00:00:00
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