Self-adjustment of Young's modulus in biomedical titanium alloys during orthopaedic operation

被引：91

作者：

Nakai, Masaaki ^{[1
]}

Niinomi, Mitsuo ^{[1
]}

Zhao, Xingfeng ^{[2
]}

Zhao, Xiaoli ^{[2
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 04期

关键词：

Biomaterials; Metals and alloys; beta-type titanium alloys; Young's modulus; Deformation-induced phase transformation;

D O I：

10.1016/j.matlet.2010.11.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In spinal fixation devices, the Young's modulus of the metallic implant rod should be not only sufficiently low to prevent stress shielding for the patient but also sufficiently high to suppress springback for the surgeon. This paper proposes a novel function of biomedical titanium alloys self-adjustment of Young's modulus. Deformation-induced omega phase transformation was introduced into beta-type titanium alloys so that the Young's modulus of only the deformed part would increase during operation, while that of the non-deformed part would remain low. The Young's modulus increase by deformation was investigated for a binary Ti-12Cr alloy. This alloy successfully underwent deformation-induced to phase transformation and exhibited the increase in the Young's modulus by deformation. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：688 / 690

页数：3

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