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Mechanical and Microstructural Properties of Rotary-Swaged Wire of Commercial-Purity Titanium

Authors: Michal Duchek, Jan Palán, Tomas Kubina

Abstract:

Bars made of titanium grade 2 and grade 4 were subjected to rotary forging with up to 2.2 true strain reduction in the cross-section from 10 to 3.81 mm. During progressive deformation, grain refinement in the transverse direction took place. In the longitudinal direction, ultrafine microstructure has not developed. It has been demonstrated that titanium grade 2 strengthens more than grade 4. The ultimate tensile strength increased from 650 MPa to 1040 MPa in titanium grade 4. Hardness profiles on the cross section in both materials show an increase in the centre of the wire.

Keywords: Commercial-purity titanium, wire, rotary swaging, tensile test, hardness, modulus of elasticity, microstructure.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3300423

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References:


[1] L. Ostrovská, L. Vistejnova, J. Džugan, P. Sláma, et al. Biological evaluation of ultra-fine titanium with improved mechanical strength for dental implant engineering. Journal of Materials Science, 2016, Vol. 51, No. 6, pp. 3097-3110.
[2] M. Žídek, Metalurgická tvařitelnost ocelí za tepla a za studena, 1st ed., Aleko: Praha, 1995, 356 pages. ISBN 80-85341-45-X
[3] J. H. Jang, W. H. Kwon, S. H. Chun, and Y. H. Moon, Reliability analysis of process-induced cracks in rotary swaged shell nose part Journal of Mechanical Science and Technology, 2012, 26, Korean Soc Mech Engn (KSME); Japan Soc Mech Engn (JSME)
[4] Y. li, J. Huang, G. Huang, W.Wang, J. Chen, and Z. Zeng, Comparison of radial forging between the two-and three-split dies of a thin-walled copper tube during tube sinking. Materials & Design, 2014, Vol. 56, No. 4, pp. 822-832.
[5] S. J. Lim, H. J. Choi, and C. H. Lee, Forming characteristics of tubular product through the rotary swaging proces. Journal of Materials Processing Technology, 2009, Vol. 209, No. 1, pp. 283-288.
[6] Q. Zhang, K. Jin, and D. Mu, Tube/tube joining technology by using rotary swaging forming method. Journal of Materials Processing Technology, 2014, Vol. 214, No. 10, pp. 2085-2094.
[7] H. Alkhazraji, E. El-Danaf, M. Wollmann, and L. Wagner, Enhanced fatigue strength of commercially pure Ti processed by rotary swaging. Advances in Materials Science and Engineering, 2015, Vol. 2015, ID 301837, 12 pages.
[8] N. Benmhenni, S. Bouvier, R. Brenner, T. Chauveau, and B. Bacroix, Micromechanical modelling of monotonic loading of CP α-Ti: Correlation between macroscopic and microscopic behaviour. Materials Science and Engineering A, 2013, Vol. 573, pp. 222-233.
[9] A. Grabianowski, A. Danda, B. Ortner, and H. P. Stüwe, Different work hardening in swaged and drawn copper. Mechanical Research Communications, 1980, Vol. 7, No. 2, pp. 125-126.
[10] M. Duchek, T. Kubina, J. Hodek, and J. Dlouhy, Development of the production of ultrafine-grained titanium with the conform equipment, Materiali in Tehnologije, 2013, Vol. 47, No. 4, pp. 515-518.
[11] T. Kubina, J. Dlouhý, M. Köver, M. Dománková, and J. Hodek, Preparation and thermal stability of ultra-fine and nano-grained commercially pure titanium wires using conform equipment. Materiali in Tehnologije, 2015, Vol. 49, No. 2, pp. 213-217.
[12] J. Schrank, B. Ortner, H. P. Stuwe, and A. Grabianowski, Work Softening and Work-hardening During Rotary Swaging of Copper Materials. Science and Technology, 1985, Vol. 1, No. 7, pp. 544-549.
[13] H. P. Stuwe, Equivalent strains in severe plastic deformation. Advanced Engineering Materials, 2003, Vol. 5, No. 5, pp. 291-295.