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Ti Alloy with Enhanced Machinability in UAT Turning

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Abstract

Metastable β-titanium alloys such as Ti 15V 3Al 3Cr 3Sn are of great technological interest thanks to their high fatigue strength-to-density ratio. However, their high hardness and poor machinability increase machining costs. Additionally, formation of undesirable long chips increases the machining time. To address those issues, a metastable β-titanium alloy (Ti 15V 3Al 3Cr 2Zr 0.9La) with enhanced machinability was developed to produce short chips even at low cutting speeds. A hybrid ultrasonically assisted machining technique, known to reduce cutting forces, was employed in this study. Cutting force components and surface quality of the finished work-pieces were analyzed for a range of cutting speeds in comparison with those for more traditional Ti 15V 3Al 3Cr 3Sn. The novel alloy demonstrated slightly improved machining characteristics at higher cutting speeds and is now ready for industrial applications.

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Acknowledgments

Funding from the European Union’s Seventh Framework Programme (FP7/2007–2013) under Grant Agreement No. PITN-GA-2008-211536, project MaMiNa, is gratefully acknowledged.

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Authors and Affiliations

  1. Nuclear Advanced Manufacturing Research Centre, University of Sheffield, Roterham, S60 5WG, U.K.

    Agostino Maurotto (Research Associate)

  2. Institut für Werkstoffe, Technische Universität Braunschweig, 38106, Braunschweig, Germany

    Carsten Siemers (Senior Research Scientist)

  3. Department of Mechanical Engineering, CECOS University of IT and Emerging Sciences, Peshawar, KPK, Pakistan

    Riaz Muhammad (Associate Professor)

  4. Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, LE11 3TU, U.K.

    Anish Roy (Senior Lecturer) & Vadim Silberschmidt (Professor)

Authors
  1. Agostino Maurotto
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  2. Carsten Siemers
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  3. Riaz Muhammad
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  4. Anish Roy
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  5. Vadim Silberschmidt
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Corresponding author

Correspondence to Agostino Maurotto.

Additional information

Manuscript submitted September 28, 2013.

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Maurotto, A., Siemers, C., Muhammad, R. et al. Ti Alloy with Enhanced Machinability in UAT Turning. Metall Mater Trans A 45, 2768–2775 (2014). https://doi.org/10.1007/s11661-014-2236-y

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  • DOI: https://doi.org/10.1007/s11661-014-2236-y

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