Fatigue Strength of Ti-35Nb-7Zr-5Ta

Abstract:

Mean stress on fatigue strength of Ti-35Nb-7Zr-5Ta, used in the manufacture of orthopedic prostheses, was evaluates. Samples of Ti-35Nb-7Zr-5Ta were pressureless, sintered and tested using microhardness (Vickers) and four point bending fatigue conditions. Characterization was carried out using optical microscopy, scanning electron microscopy, EDS analysis, oxygen analysis and density. The microstructural analysis shows low densification after sintering (almost 86% of theoretical) and some precipitates of α phase and presumably ω phase at the grain and grain boundaries. The bending fatigue resistance limit reached (Se (10⁶) = 90 MPa), due to, presumably, the influence of the medium-high porosity, α phase precipitates at grain boundaries as well as the high oxygen content in the material after sintering (0.96 %). In this case, Kwofie model best explains the influence of mean stress on fatigue strength of this alloy.

• Periodical: Materials Science Forum (Volumes 727-728)
• Pages: 73-79
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.727-728.73
• Online since: August 2012
• Authors: H. Alexander Franco, Cosme Roberto Moreira Silva, J.L.A. Ferreira, José Alexander Araújo
• Keywords: Four Point Bending Fatigue, Powder metallurgy, TI-35Nb-7Zr-5Ta

References

[1] Medeiros, W. S., Oliveira, M. V., Pereira, L. C., Cairo, C. A. A., Calixto, M. A., 2005. Calcium Phosphate Deposition on Porous Titanium Samples. In Fifth International Latin-American Conference on Powder Technology, 2005, Costa do Sauipe. Procedings of Fifth International Latin-American Conference on Powder Technology; Metallum Eventos Técnicos Científicos, Bahia, Brazil, v. CD.

[2] Oliveira, M. V., Moreira, A. C., Appoloni, C. R., Lopes, R. T., Pereira, L. C., Cairo, C. A. A., 2005. Porosity Study of Sintered Titanium Foams. In Fifth International Latin-American Conference on Powder Technology, Costa do Sauipe. Procedings of Fifth International Latin-American Conference on Powder Technology; Metallum Eventos Técnicos Científicos, Bahia, Brazil.

[3] German, M. R., 1996. Sintering Theory and practice. By Jhon Wiley & sons, inc.

[4] Banerjee, R., Nag, S., Fraser, H., 2005. A novel combinatorial approach to the development of beta titanium alloys for orthopaedic implants. Materials Science and Engineering C; 25: 282-289.

DOI: 10.1016/j.msec.2004.12.010

[5] Niinomi, M., 2003. Fatigue performance and cytotoxicity of low rigidity titanium alloy, Ti-29Nb-13Ta-4. 6Zr. Biomaterials. 24 (16): 2673-2683.

DOI: 10.1016/s0142-9612(03)00069-3

[6] Katti, K. S., 2004. Biomaterials in total joint replacement, Colloids and Surfaces B. Biointerfaces 39 (3): 133-142.

DOI: 10.1016/j.colsurfb.2003.12.002

[7] Geetha, M., Kamachi, M. U., Gogia, A. K., Asokamani, R., Raj, B., 2004. Influence of microstructure and alloying elements on corrosion behavior of Ti–13Nb–13Zr alloy. Corrosion Science; 46(4): 877-892.

DOI: 10.1016/s0010-938x(03)00186-0

[8] Niinomi, M., 2002. Recent metallic materials for biomedical applications. Metal Mater. Trans. A; 33A: 477–86.

[9] Kuroda, D., Niinomi, M., Morinaga, M., Kato, Y., Yashiro, T. 1998. Design and mechanical properties of new β type titanium alloys for implant materials. Mat. Sci. Eng. A; A 243: 244–9.

DOI: 10.1016/s0921-5093(97)00808-3

[10] Kuroda, D., Niinomi, M., Fukui, H., Suzuki, A., Hasegawa, S., 2001. Mechanical performance of newly developed β -type titanium alloy, Ti–29Nb–13Ta–4. 6Zr, for biomedical applications. In: Niinomi, M., Okabe, T., Taleff, E. M., Lesure, D. R., Lippard, H. E., editors. Structural biomaterials for the 21st century. Warrendale: TMS, p.99.

DOI: 10.1016/s0142-9612(03)00069-3

[11] Niinomi, M., Kuroda, D., Fukunaga, K., Morinaga, M., Kato, Y., Yashiro, T., Suzuki, A., 1999. Corrosion wear fracture of new β type biomedical titanium alloys. Mat. Sci. Eng. A; A263: 193–9.

DOI: 10.1016/s0921-5093(98)01167-8

[12] Akahori, T., Niinomi, M., Yabunaka, T., Kuroda, D., Fukui, H., Suzuki, A., Hasegawa, J., 2001. Fretting fatigue characteristics of biomedical new b titanium alloy, Ti–29Nb–13Ta–4. 6Zr. In: Hanada, S., Zhong, Z., Nam, S. W., Wright, R. N., editors. Proceedings of the PRICM 4: The Jpn. Inst. Metals, p.209.

DOI: 10.1299/jsmeatem.2003.2._os07w0142

[13] Taddei, E. B., 2007. Obtenção da liga Ti 35Nb 7Zr 5Ta por metalurgia do pó para utilização em próteses ortopédicas. Tesis de Doutorado. Campo Montenegro, São José dos Campos, SP- Brasil.

DOI: 10.1590/s1517-70762007000100015

[14] Steinemann, S. G., 1980. Corrosion of surgical implants in vivo and in vitro tests. In: Winter, G. D., Leray, J. L., De Groot K, editors. Evaluation of biomaterials. NewYork: Wiley, p.1–34.

[15] Kawahara, H., Ochi, S., Tanetani, K., Kato, K., Isogai, M., Mizuno, Y., Yamamoto, H., Yamaguchi, A., 1963. Biological test of dental materials, Effect of pure metals upon the mouse subcutaneous fibroblast, strain L cell in tissue culture. J. Jpn. Soc. Dent. Apparat. Mater; 4: 65–75.

[16] Lee, Y-L., Pan, J., Hathaway, R., Barkey, M. E., 2005. Fatigue Testing and Analysis (Theory and Practice), Elsevier Butterworth-Heinemann, USA.

[17] Smith, K. N., Watson, P., Topper, T. H., 1970. A Stress Strain Function for the Fatigue of Metals, Journal of Materials, ASTM, Vol. 5, No. 4, 99. 767 – 778.

[18] Walker, K., 1970. The Effect of Stress Ratio During Crack Propagation and Fatigue for 2024-T3 and 7075-T6 Aluminum, Effect of Environment and Complex Load History on Fatigue Life, ASTM STP 462, Am. Soc. For Testing and Materials, West Conshohocken, PA, pp.1-14.

DOI: 10.1520/stp32032s

[19] Berkovits, A., Fang, D., 1981. An analytical master curve for Goodman diagram data, Int. J. Fatigue, 15, pp.173-80.

DOI: 10.1016/0142-1123(93)90174-o

[20] Kwofie, S., 2001. An exponential stress function for predicting fatigue strength and life due to mean stresss, Int. J. Fatigue, 23, pp.829-836.

DOI: 10.1016/s0142-1123(01)00044-5

[21] Oliveira, F., Ferreira, J. L. A., Araújo, J. A., 2009. Determinação da Resistência à Fadiga do Aço ASTM A743 - CA6NM - Tomo 3 - Efeito da Presença da Tensão Média Sobre a Vida em Fadiga. Universidade de Brasília.

DOI: 10.30779/cmm_metalica_59_05

[22] Allvac, 2002. An Allegheny Technologies Company, Catalogue.