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Elevated Temperature Mechanical Behavior of Severely Deformed Titanium

Journal of Materials Engineering and Performance volume 23, pages 1834–1844 (2014)Cite this article

Abstract

In this investigation, compression tests were performed at a strain rate of 0.001-0.1 s−1 in the range of 600-900 °C to study the high temperature deformation behavior and flow stress model of commercial purity (CP) titanium after severe plastic deformation (SPD). It was observed that SPD via equal channel angular extrusion can considerably enhance the flow strength of CP titanium deformed at 600 and 700 °C. Post-compression microstructures showed that, a fine grained structure can be retained at a deformation temperature of 600 °C. Based on the kinematics of dynamic recovery and recrystallization, the flow stress constitutive equations were established. The validity of the model was demonstrated with reasonable agreement by comparing the experimental data with the numerical results. The error values were less than 5% at all deformation temperatures except 600 °C.

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Acknowledgments

The authors would like to acknowledge the support from the Marie Curie Career Integration Grant within the FP7 program for supporting this investigation.

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  1. Mechanical Engineering Department, Ozyegin University, Istanbul, Turkey

    Seyed Vahid Sajadifar & Guney Guven Yapici

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  1. Seyed Vahid Sajadifar
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  2. Guney Guven Yapici
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Correspondence to Guney Guven Yapici.

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Sajadifar, S.V., Yapici, G.G. Elevated Temperature Mechanical Behavior of Severely Deformed Titanium. J. of Materi Eng and Perform 23, 1834–1844 (2014). https://doi.org/10.1007/s11665-014-0947-2

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