β Stability and Mechanical Behavior of Metastable β Type TiNb Based Alloys

Abstract:

Metastable β type TiNb based alloys of Ti-35Nb, Ti-35Nb-4Sn and Ti-42Nb-4Sn (wt. %) with different stability were prepared and thermo-mechanical treatment was carried out to investigate their microstructural evolution and mechanical properties. It was found that although the TiNb based alloy with lower stability performs lower strength in its solution state due to the stress induced martensitic transformation, they could be strengthened significantly by severe cold rolling followed by aging, remaining a relative low elastic modulus. X-ray diffraction, transmission electron microscopy and mechanical test were conducted to characterize the microstructural evolution and mechanical behavior of the metastable β type TiNb based alloys with different β stability. The strengthening mechanism was discussed on the basis of the cold deformation and martensitic transformation.

• Periodical: Materials Science Forum (Volumes 747-748)
• Pages: 941-946
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.747-748.941
• Online since: February 2013
• Authors: Guang Yue Liao, Shun Guo, Zhen Zhen Bao, Xin Qing Zhao
• Keywords: Martensitic Transformation (MT), Thermo-Mechanical Treatment, Ti-Nb-Sn, β-Ti Alloy

References

[1] P. Laheurte, F. Prima, A. Eberthardt , Mechanical properties of low modulus β titanium alloys designed from the electronic approach, Journal of the Mechanical Behavior of Biomedical materials. 3(2010) 565-573.

DOI: 10.1016/j.jmbbm.2010.07.001

[2] Y.L. Hao, S.J. Li, S.Y. Sun, R. Yang, Effect of Zr and Sn on Young's modulus and superelasticity of Ti-Nb-based alloys, Materials Science and Engineering. 441 (2006) 112-118.

DOI: 10.1016/j.msea.2006.09.051

[3] Y.L. Zhou, M. Niinomi, T. Akahori, Effects of Ta content on Young's modulus and tensile properties of binary Ti-Ta alloys for biomedical applications, Materials Science and Engineering A. 371(2004) 283-290.

DOI: 10.1016/j.msea.2003.12.011

[4] M. Niinomi, Mechanical biocompatibilities of titanium alloys for biomedical applications, Journal of the Mechanical Behavior of biomedical materials. 1(2008) 30-42.

DOI: 10.1016/j.jmbbm.2007.07.001

[5] S. Miyazaki, H.Y. Kim, H. Hosoda, Development and characterization of Ni-free Ti-base shape memory and superelastic alloys, Material Science and Engineering A. 438-400(2006) 18-24.

DOI: 10.1016/j.msea.2006.02.054

[6] H. Matsumoto, S. Watanabe and S. Hanada, Beta TiNbSn alloys with low Young's modulus and high strength, Materials Transactions. 46 (2005) 1070-1078.

DOI: 10.2320/matertrans.46.1070

[7] M. Abdel-Hady, K. Hinoshita and M. Morinaga, General approach to phase stability and elastic properties of β-type Ti-alloys using electronic parameters, Scripta Meterialia 55 (2006) 477-480.

DOI: 10.1016/j.scriptamat.2006.04.022

[8] M Abdel-Hady, H. Fuwa, K. Hinoshita, H. Kiruma, Phase stability change with Zr content in β-type Ti-Nb alloys, Scripta Materialia. 57 (2007) 1000-1003.

DOI: 10.1016/j.scriptamat.2007.08.003

[9] M. Geetha, A.K. Singh, R. Asokamani, A.K. Gogia, Ti based biomaterials, the ultimate choice for orthopaedic implants-A review, Progress in Materials Science. 54 (2009) 397-425.

DOI: 10.1016/j.pmatsci.2008.06.004

[10] S.J. Li, Y.W. Zhang, B.B. Sun, Y.L. Hao, R. Yang, Thermal stability and mechanical properties of nanostructure Ti-24Nb-4Zr-7. 9Sn alloy, Material Science and Engineering A. 480 (2008) 101-108.

DOI: 10.1016/j.msea.2007.06.070

[11] Y.L. Hao, S.J. Li, S.Y. Sun, C.Y. Zheng, R. Yang, Elastic deformation behavior of Ti-24Nb-4Zr-7. 9Sn for biomedical applications, Acta Biomaterialia. 3 (2007) 277-286.

DOI: 10.1016/j.actbio.2006.11.002

[12] R. Narayan, Biomedical Materials, first ed., Springer, USA, (2009).

[13] Y.L. Zhou, M. Niinomi, T. Akahori, Decomposition of martensite α" during aging treatments and resulting mechanical properties of Ti-Ta alloys, Materials Science and Engineering: A. 384(2004) 92-101.

DOI: 10.1016/j.msea.2004.05.084