Design and mechanical properties of new β type titanium alloys for implant materials
Design and mechanical properties of new β type titanium alloys for implant materials
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DOI：
10.1016/s0921-5093(97)00808-3
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发表时间：
1998-03-15
期刊：
影响因子：
6.4
通讯作者：
Yashiro, T
中科院分区：
文献类型：
--
作者：
Kuroda, D;Niinomi, M;Yashiro, T
植入材料主要采用纯钛和Ti-6Al-4V合金。由于V的毒性被指出，随后开发了Ti-6Al-7Nb和Ti-5Al-2.5Fe等无V钛合金。已开发出不含铝和钒的钛合金作为植入材料。然而，它们大多数是α+β型合金。最近开发出具有较低弹性模量和较高强度的β型钛合金。为此，基于d电子合金设计方法，研究设计由Nb、Ta、Zr、Mo或Sn等无毒元素组成的具有较低弹性模量和较高强度的新型β型钛合金，并研究了所设计合金在实验室三弧炉熔炼的纽扣铸锭的基本力学性能。本研究设计的β型合金、Ti-Nb-Ta-Zr、Ti-Nb-Ta-Mo和Ti-Nb-Ta-Sn系合金有望在植入材料方面具有更高的性能。与已用作植入材料的Ti-6Al-4V ELI 相比，这些合金的杨氏模量较低。经过一些热处理的合金提供了适合作为植入材料的拉伸性能。本研究中设计的合金的拉伸强度和伸长率等于或大于已经报告的要求值。 (C) 1998 Elsevier Science S.A. 保留所有权利。
Pure titanium and Ti-6Al-4V alloy have been mainly used as implant materials. V-free titanium alloys like Ti-6Al-7Nb and Ti-5Al-2.5Fe have been then developed because toxicity of V has been pointed out. Al-and V-free titanium alloys as implant materials have been developed. Most of them are, however, alpha + beta type alloys. beta type titanium alloys with lower moduli of elasticity and greater strength have been developed recently. Design of new beta type titanium alloys composed of non-toxic elements like Nb, Ta, Zr, Mo or Sn with lower moduli of elasticity and greater strength were, therefore, studied based on the d-electron alloy design method, and the basic mechanical properties of designed alloys of button ingots melted by tri-are furnace in the laboratory were investigated in this study. beta type alloys, Ti-Nb-Ta-Zr, Ti-Nb-Ta-Mo and Ti-Nb-Ta-Sn system alloys designed in this study are expected to have greater performance for implant materials. The Young's moduli of these alloys are lower compared with that of Ti-6Al-4V ELI which has been used as an implant material. The alloys on which some heat treatments have been conducted offer suitable tensile properties as implant materials. The tensile strength and elongation of designed alloys in this study are equivalent or greater than required values already reported. (C) 1998 Elsevier Science S.A. All rights reserved.