Comparison of Fatigue Properties and Fatigue Crack Growth Rates of Various Implantable Metals

被引：38
作者：
Okazaki, Yoshimitsu [1 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Human Technol Res Inst, Adv Biomat Grp, Tsukuba, Ibaraki 3058566, Japan
来源：
MATERIALS | 2012年 / 5卷 / 12期
关键词：
implantable metal; mechanical property; fatigue property; notch effect; heat treatment; stress intensity factor; fatigue crack growth rate; CO-CR-MO; MECHANICAL-PROPERTIES; INTRAMEDULLARY NAIL; HIP-ARTHROPLASTY; STAINLESS-STEEL; FRACTURE; FIXATION; FAILURE; MICROSTRUCTURE; CORROSION;
D O I：
10.3390/ma5122981
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The fatigue strength, effects of a notch on the fatigue strength, and fatigue crack growth rate of Ti-15Zr-4Nb-4Ta alloy were compared with those of other implantable metals. Zr, Nb, and Ta are important alloying elements for Ti alloys for attaining superior long-term corrosion resistance and biocompatibility. The highly biocompatible Ti-15Zr-4Nb-4Ta alloy exhibited an excellent balance between strength and ductility. Its notched tensile strength was much higher than that of a smooth specimen. The strength of 20% cold-worked commercially pure (C. P.) grade 4 Ti was close to that of Ti alloy. The tension-to-tension fatigue strength of an annealed Ti-15Zr-4Nb-4Ta rod at 10(7) cycles was approximately 740 MPa. The fatigue strength of this alloy was much improved by aging treatment after solution treatment. The fatigue strengths of C. P. grade 4 Ti and stainless steel were markedly improved by 20% cold working. The fatigue strength of Co-Cr-Mo alloy was markedly increased by hot forging. The notch fatigue strengths of 20% cold-worked C. P. grade 4 Ti, and annealed and aged Ti-15Zr-4Nb-4Ta, and annealed Ti-6Al-4V alloys were less than those of the smooth specimens. The fatigue crack growth rate of Ti-15Zr-4Nb-4Ta was the same as that of Ti-6Al-4V. The fatigue crack growth rate in 0.9% NaCl was the same as that in air. Stainless steel and Co-Cr-Mo-Ni-Fe alloy had a larger stress-intensity factor range (Delta K) than Ti alloy.
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页码：2981 / 3005
页数：25
相关论文
共 57 条
[21]  
International Organization for Standardization, 1996, 58323 ISO
[22]  
International Organization for Standardization, 2007, 58329 ISO
[23]   Premature biomechanical failure of the distal fixation screws of the IC Nail - case report [J].
Ip, D .
INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED, 2003, 34 (10) :786-788
[24]  
Irwin G.R., 2000, STRESS ANAL CRACKS H, P333
[25]  
Japanese Industrial Standards Committee, 2009, T0309 JIS JAP IND ST
[26]  
Japanese Industrial Standards Committee, 2012, H4600 JIS JAP IND ST
[27]  
Japanese Industrial Standards Committee, 2009, T74014 JIS JAP IND S
[28]  
Japanese Industrial Standards Committee, 2009, T0310 JIS JAP IND ST
[29]  
Kasimatis G B, 2007, J Orthop Surg (Hong Kong), V15, P368
[30]  
Kirkpatrick JS, 2005, J SPINAL DISORD TECH, V18, P247
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