Fabrication of the Beta-Titanium Alloy Rods from a Mixture of Pure Metallic Element Powders via Selected Laser Melting

Abstract:

The powder-bed additive manufacturing (AM) process offers advantages in terms of reduced material waste, ability to create complex shape and a decrease in the lead time from design to manufacturing. Recently, custom-made implant of Ti alloys is being developed by selective laser melting (SLM) in additive manufacturing (AM) process. However, the difficulty in the fabrication of titanium alloys due to their pre-alloyed powder cost, resulting in a limited usage of titanium alloys. To overcome this disadvantage, it is effective to fabricate the Ti alloys by SLM from mixture of pure elemental powders. In this case, it is avoided the preparing of the pre-alloyed powders. Therefore, the purpose of the present study is the trying to the fabrication of the Ti-20at.%X (X = Cr, Nb) alloys from the mixture of pure elemental powders by SLM.

• Periodical: Materials Science Forum (Volume 941)
• Pages: 1260-1263
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.941.1260
• Online since: December 2018
• Authors: Mitsuharu Todai, Takeshi Nagase, Takao Hori, Hiroyuki Motoki, Shi Hai Sun, Koji Hagihara, Takayoshi Nakano*
• Keywords: Selected Laser Melting, Titanium Alloy

References

[1] M.Geetha, A.K. Singh, R. Asokamani, A.K. Gogia: Ti based biomaterials, the ultimate choice for orthopaedic implants – A review, Prog. Mater. Sci. 54 (2009) 309-426.

DOI: 10.1016/j.pmatsci.2008.06.004

[2] S. Bose, D. Ke, H. Sahasrabudhe, A. Bandyopadhyay: Additive manufacturing of biomaterials, Prog. Mater. Sci. 93 (2018) 45-111.

DOI: 10.1016/j.pmatsci.2017.08.003

[3] M. Fischer, D. Joguet, G. Robin, L. Peltier, P. Laheurte: In situ elaboration of a binary Ti–26Nb alloy by selective laser melting of elemental titanium and niobium mixed powders, Mater. Sci. Eng. C 62 (2016) 852-859.

DOI: 10.1016/j.msec.2016.02.033

[4] T. Ishimoto, K. Hagihara, K. Hisamoto, S.H. Sun, T. Nakano, Crystallographic texture control of beta-type Ti-15Mo-5Zr-3Al alloy by selective laser melting for the development of novel implants with a biocompatible low Young's modulus, Scripta Materialia 132 (2017) 34–38.

DOI: 10.1016/j.scriptamat.2016.12.038

[5] S-H Lee, M. Todai, M. Tane, K. Hagihara, T. Nakano, H. Nakajima: Biocompatible Low Young's Modulus Achieved by Strong Crystallographic Elastic Anisotropy in Ti-15Mo-5Zr-3Al Alloy Single Crystal, Journal of the Mechanical Behavior of Biomedical Materials 14 (2012) 48-54.

DOI: 10.1016/j.jmbbm.2012.05.005

[6] M. Todai, T. Nakano, T. Liu, H.Y. Yasuda, K. Hagihara, K. Cho, M. Ueda, M. Takeyama: Effect of building direction on the microstructure and tensile properties of Ti-48Al-2Cr-2Nb alloy additively manufactured by electron beam melting, Additive Manufacturing 13 (2017) 61-70.

DOI: 10.1016/j.addma.2016.11.001