Torsional Extrusion Processing of Titanium Alloy Ti 6Al-6V-2SN under High Feeding Rates

Abstract:

It is known that the torsional extrusion process being used to create the object is complex in cross sectional profile. When compared to conventional extrusion, it is evident that the strength of the titanium alloy could be increased in torsional extrusion. This torsional extrusion process could also be applied the materials having the property of brittleness. Hence, the titanium alloys have huge application in aerospace industries in the area of jet engine components subjected to operating at extreme temperature. Besides, it is also used in critical airframe applications where high strength and fracture toughness are mandatory requirement. Further, it is also used as fasteners and tubing throughout the application of aircraft structures, since it involves a lot of complications with a huge investment for machining. This paper investigates the challenges and a difficulty in the torsional extrusion process ^[2].The material titanium is well known for its high temperature resistance and also possesses poor machining rate. Therefore, the study on Titanium machining is chosen to enrich the role of titanium alloys in the field of engineering science and materials.

• Periodical: Applied Mechanics and Materials (Volumes 766-767)
• Pages: 655-660
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.766-767.655
• Online since: June 2015
• Authors: P. Gunasekar*
• Keywords: Brittleness, High Creep Resistance, Poor Machining, Torsional Extrusion

References

[1] Dinesh Damodaran, Rajiv Shivpuri, Prediction and control of part distortion during the hot extrusion of titanium alloys, Journal of Materials Processing Technology, 2004, Volume 150, Issues 1–2, Pages 70–75.

DOI: 10.1016/j.jmatprotec.2004.01.022

[2] J. Sun, Y. B. Guo, Material flow stress and failure in multiscale machining titanium alloy Ti-6Al-4V, The International Journal of Advanced Manufacturing Technology, 2009, Volume 41, Issue 7-8, Pages 651-659.

DOI: 10.1007/s00170-008-1521-6

[3] H. Zendehdel, A. Hassani, Influence of twist extrusion process on microstructure and mechanical properties of 6063 aluminum alloy, Materials & Design, 2012, Volume 37, Pages13-18.

DOI: 10.1016/j.matdes.2011.12.009

[4] R. W Schutz, H. B Watkins, Recent developments in titanium alloy application in the energy industry, Materials Science and Engineering: A, 1998, Volume 243, Issues 1–2, Pages 305–315.

DOI: 10.1016/s0921-5093(97)00819-8

[5] S.M. Fatemi Varzaneh, A. Zarei Hanzaki, M. Naderi, Ali A Roostaei, Deformation homogeneity in accumulative back extrusion processing of AZ31 magnesium alloy, Journal of Alloys and Compounds, 2010, Volume 507, Issue 1, Pages 207–214.

DOI: 10.1016/j.jallcom.2010.07.157

[6] Chuan Ting Wang, Nong Gao, Mark G. Gee, Robert J.K. Wood, Terence G. Langdon, Processing of an ultrafine-grained titanium by high-pressure torsion: An evaluation of the wear properties with and without a TiN coating, 2013, Volume 17, Pages 166–175.

DOI: 10.1016/j.jmbbm.2012.08.018

[7] Ying Chun Wang, Terence G. Langdon, Influence of phase volume fractions on the processing of a Ti–6Al–4V alloy by high-pressure torsion, Journal of the Mechanical Behavior of Biomedical Materials, Materials Science and Engineering: A, 2013, Volume 559, Pages 861–867.

DOI: 10.1016/j.msea.2012.09.034

[8] http: /www. astm. org/Standards/B861.