Various thermo-mechanical processes were performed on a standard and a low oxygen content Ti-6Al-4V alloy. Testing was performed to determine whether it was possible to achieve a combination of tensile properties comparable to those of Ti-3Al-2.5V by means of cold working and annealing Ti-6Al-4V from a thickness of 0.671 cm (0.264 in.) to that between 0.081 and 0.094 cm (0.032-0.037 in.), which had never been carried out before. The resulting mechanical properties of this study were compared to the mechanical properties of Ti-3Al-2.5V to determine whether Ti-6Al-4V could be used as a suitable replacement for hydraulic tubing applications. The optimum results were achieved with 10-15% cold work and annealing at 750 A degrees C (1382 A degrees F) for 2 h between cold work reductions in thickness. It was concluded that Ti-6Al-4V was a suitable replacement for Ti-3Al-2.5V for hydraulic tubing with an increase in ultimate and yield strengths, but with a slight sacrifice of 5-10% elongation.
Copyright 2011 ASM International. This paper was published in Journal of Materials Engineering and Performance, Volume 20, Issue 7, pp. 1206-1218 and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial pruposes, or modification of the content of this paper are prohibited. Available on publisher's site at http://www.springerlink.com/content/6w37h7p4pl51q85r/.
Miranda, W., Takiguchi, G., Shimabukuro, T., McLennan, L., Agajanian, C., Quintero, L., Mismar, D., Abdulla, J., Andrews, C., Hahn, M., Fodran, E., Lee, E.W., Garmestani, H., Conner, R.D., Brick, D., Ogren, J., and Es-Said, O. S., 2011, "Innovative Manufacturing Process for Defect Free, Affordable, High Pressure, Thin Walled, Hydraulic Tubing," Journal of Materials Engineering and Performance, 20(7), pp. 1206-1218.