Surface Modification Effects on Microstructure and Mechanical Properties of Bio-Titanium Alloys

Ahmed Zaki; Shimaa El-Hadad; Waleed Khalifa

doi:10.4028/www.scientific.net/MSF.909.199

Paper Titles

In Vitro Inhibitory Effect of Vanillin on Candida Biofilm
p.177

Physical Properties of Irreversible Hydrocolloid Impression Material Incorporated with Silver-Nanoparticles
p.182

Antimicrobial Properties of Ag Nanoparticle-Incorporated Irreversible Hydrocolloid Impression Material
p.187

Evaluation of Mechanical Properties of PEEK HAp Bio-Composite Used in Load Bearing Bone Implants
p.193

Surface Modification Effects on Microstructure and Mechanical Properties of Bio-Titanium Alloys
p.199

Influence of Modified Carbon Fiber on Properties of Paper Based Friction Materials
p.207

Preparation of Copper-Doped Nickel Oxide Thin Films by Sol-Gel Method Using Nickel and Copper Acetate
p.213

Development of an Optimal Heat Treatment Regime for a Gradient Material Containing Tungsten Carbide
p.219

Investigation of the Influences of Reaction Temperature and Time on the Chemical Reduction of Graphene Oxide by Conventional Method Using Vitamin C as a Reducing Agent
p.225

HomeMaterials Science ForumMaterials Science Forum Vol. 909Surface Modification Effects on Microstructure and...

Surface Modification Effects on Microstructure and Mechanical Properties of Bio-Titanium Alloys

Abstract:

Ti-6Al-7Nb (Ti67) alloy has recently been developed to replace the commercial Ti6Al4V (Ti64) alloy because of the reported cytoxicity of vanadium. Surface modification by thermal oxidation is used to enhance the hardness and wear resistance of such titanium alloys. Since Ti67 alloy contains Nb as β phase stabilizer instead of V in Ti64, it is expected to behave differently upon processing by thermal oxidation. Therefore, it is of interest to compare the response of the two alloys to thermal oxidation in terms of hardness and wear resistance. Forged and cast samples were used to study the influence of the microstructure on the surface properties after oxidation. The forged samples with their equiaxed microstructure showed a well developed sub-surface hard layer (α-case) compared to the cast structure for the two alloys. The thickness of this case in Ti64 after oxidation at (900-1100 °C) was greater than in Ti67. This resulted in higher wear resistance of the Ti64 alloy relative to Ti67. These results are worth considering when designing implants for joints replacement.

You might also be interested in these eBooks

5th Asia Conference on Mechanical and Materials Engineering

View Preview

Info:

Periodical:

Materials Science Forum (Volume 909)

Pages:

199-204

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.909.199

Citation:

Cite this paper

Online since:

November 2017

Authors:

Ahmed Zaki, Shimaa El-Hadad*, Waleed Khalifa

Keywords:

Alpha-Beta Titanium Alloys, Microstructure, Thermal Oxidation, Wear Resistance

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Boyer, R., Welsch, G., Collings, E., 1994. Materials Properties, Handbook: Titanium Alloys. ASM International, Metals Park, OH, 3-11.

Google Scholar

[2] Hin, T. S., 2004. Biomaterials Engineering and Processing Series: Engineering Materials for Biomedical Applications. ISBN: 978-981-256-061-2.

Google Scholar

[3] Standard specification for wrought Ti-6Al-4V Alloy for Surgical Implant, ASTM Designation F136-82, ASTM, 1994, 19-20.

Google Scholar

[4] Scales, J.T., Black, J: J. Bone Joint Surg, 1991, 73B, 534–536.

Google Scholar

[5] Standard Specification for Wrought Ti-6Al-7Nb Alloy for Surgical Implant Applications (UNS R56700), ASTM F1295-11.

DOI: 10.1520/f1295-05

Google Scholar

[6] Molinari, A., Straffelini, G., Tesi, B., Bacci, T., Pradelli, G. Wear, 1997, 203-204, 447- 454.

DOI: 10.1016/s0043-1648(96)07419-4

Google Scholar

[7] Guleryuz, H., Cimenoglu, H.: Biomaterials, 2004, 479, 3325-3333.

Google Scholar

[8] El-Hadad, S., Waly, M., Khalifa, W. 22nd International Conference on Advances and Trends in Engineering Materials and their Applications, Montreal-Canada, June, (2015).

Google Scholar

[9] Zaki, A., El-Hadad, S., Khalifa, W. Proceedings of TMS, 693-700, (2016).

Google Scholar

[10] Jiang, H, Hirohasi, M, Lu, Y., Imanari, H. Scripta Materialia, 46, 2002, 639–643.

DOI: 10.1016/s1359-6462(02)00042-8

Google Scholar

[11] Sugahara, T., Reis, D.A.P., Moura Neto, C., Barboza, M.J.R., Perez, E.A.C., Piorino Neto, F., Hirschmann, A.C.O.: Mater. Sci. Forum, 2010, 636-637, 657-662.

DOI: 10.4028/www.scientific.net/msf.636-637.657

Google Scholar