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Innovative Manufacturing Process for Defect Free, Affordable, High Pressure, Thin Walled, Hydraulic Tubing

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Abstract

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 °C (1382 °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.

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Authors and Affiliations

  1. Mechanical Engineering Department, Loyola Marymount University, Los Angeles, CA, 90045, USA

    W. Miranda, G. Takiguchi, T. Shimabukuro, L. McLennan, C. Agajanian, L. Quintero, D. Mismar, J. Abdulla, C. Andrews, J. Ogren & O. S. Es-Said

  2. Northrop Grumman, Air Combat Systems, El Segundo, CA, 90245, USA

    M. Hahn & E. Fodran

  3. Naval Air Systems Command, Naval Air Warfare Center, Patuxent River, MD, 20670, USA

    E. W. Lee

  4. Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA

    H. Garmestani

  5. California State University Northridge, 18111 Nordhoff Street, Northridge, CA, 91330, USA

    R. D. Conner

  6. Fasteel Corporation, Anaheim, CA, 92805, USA

    D. Brick

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  1. W. Miranda
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  2. G. Takiguchi
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  3. T. Shimabukuro
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  4. L. McLennan
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  5. C. Agajanian
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  6. L. Quintero
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  7. D. Mismar
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  8. J. Abdulla
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  9. C. Andrews
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  10. M. Hahn
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  12. E. W. Lee
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  14. R. D. Conner
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  15. D. Brick
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  16. J. Ogren
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  17. O. S. Es-Said
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Corresponding author

Correspondence to O. S. Es-Said.

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Miranda, W., Takiguchi, G., Shimabukuro, T. et al. Innovative Manufacturing Process for Defect Free, Affordable, High Pressure, Thin Walled, Hydraulic Tubing. J. of Materi Eng and Perform 20, 1206–1218 (2011). https://doi.org/10.1007/s11665-010-9736-8

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  • DOI: https://doi.org/10.1007/s11665-010-9736-8

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