Mechanical characteristics and microstructure of drawn wire of Ti-29Nb-13Ta-4.6Zr for biomedical applications
Mechanical characteristics and microstructure of drawn wire of Ti-29Nb-13Ta-4.6Zr for biomedical applications
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DOI：
10.1016/j.msec.2006.04.008
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发表时间：
2007-01-01
期刊：
影响因子：
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通讯作者：
Ogawa, Michiharu
中科院分区：
文献类型：
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作者：
Niinomi, Mitsuo;Akahori, Toshikazu;Ogawa, Michiharu
Ti-29 Nb-13 Ta-4.6Zr合金直径为1.0mm、0.3min拉拔丝材的力学性能和变形行为（称为TNTZ（d1.0）线和TNTZ（d0.3）金属丝，研究了锻造Ti-29 Nb-13 Ta-13 Nb合金丝的显微组织，并对其在生物医学和牙科应用中的潜力进行了研究。在1063 K下进行固溶处理的4.6Zr（TNTZ（ST））包括平均直径为25 μ m的单一P相，而TNTZ（d1.0）线材包括平行于拉伸方向伸长的超细单一O相。TNTZ（d1.0）和TNTZ（d0.3）线材的拉伸强度分别为约740 MPa和800 MPa。虽然两者的伸长率几乎相等（约5.0%），但TNTZ（d1.0）线的弹性模量（约50 GPa）略低于TNTZ（d0.3）线的弹性模量（约55 GPa）。TNTZ（d1.0）钢丝的缺口疲劳极限为250 MPa。TNTZ（d1.0）和TNTZ（d0.3）丝在弹性变形区的应力-应变曲线有两个梯度，最大弹性应变几乎相等，且很大（约3.0%）。在TNTZ（ST）的一般应力-应变曲线中，最大弹性应变约为1.4%。(c)2006 Elsevier B. V.保留所有权利。
The mechanical properties and deformation behaviors of drawn wires of Ti-29Nb-13Ta-4.6Zr with diameters of 1.0 mm and 0.3 min (referred to as TNTZ(d1.0) wire and TNTZ(d0.3) wire, respectively) were investigated to determine the potential of this wire in biomedical and dental applications.The microstructure of forged Ti-29Nb-13Ta-4.6Zr subjected to a solution treatment at 1063 K (TNTZ(ST)) comprises a single P phase with an average diameter of 25 mu m, while that of the TNTZ(d1.0) wire comprises a super-fine single 0 phase that is elongated parallel to the drawing direction. The tensile strengths of the TNTZ(d1.0) and TNTZ(d0.3) wires are around 740 MPa and 800 MPa, respectively. While both the elongations are nearly equal (around 5.0%), the elastic modulus of the TNTZ(d1.0) wire (around 50 GPa) is slightly lower than that of the TNTZ(d0.3) wire (around 55 GPa). The notch-fatigue limit of the TNTZ(d1.0) wire is 250 MPa. The stress-strain curves of the TNTZ(d1.0) and TNTZ(d0.3) wires in the elastic deformation region have two gradients, and the maximum elastic strains are nearly equal to each other and very large (around 3.0%). In the general stress-strain curve for TNTZ(ST), the maximum elastic strain is around 1.4%. (c) 2006 Elsevier B.V. All rights reserved.