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Flow Behaviour of Ti-6Al-4V Subjected to Multi Directional Isothermal Compression

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Abstract

Flow behavior of Ti-6Al-4V was investigated under multi directional isothermal compressions. Flow curves of multi directional isothermal compressions were analyzed to determine softening parameter, which is the ratio of maximum flow stress (σi) to steady state flow stress (σs). Multi directional isothermal compressions were carried out at a optimum strain-rate of 10−2 s−1. Softening parameter increased gradually from first to third stage of compression. The huge strain imposed on the specimen reduced grain size from 16 µm to approximately 7–8 µm, which is suitable for superplastic deformation and also improved strength.

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Acknowledgments

The authors are grateful to the Director, DMRL Hyderabad for granting permission to use the facilities for conducting experiments.

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Authors and Affiliations

  1. Department of Mechanical Engineering, St. Joseph’s College of Engineering & Technology, Palai, Kerala, 686579, India

    J. Babu

  2. Department of Mechanical Engineering, Ashoka Institute of Engineering and Technology, Malkapur, Chotuppal (M), Nalgonda, Telangana, 508252, India

    Abhijit Dutta

  3. Defence Institute of Advanced Technology (DU), Girinagar, Pune, Maharashtra, 410025, India

    A. Kumaraswamy

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  1. J. Babu
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  2. Abhijit Dutta
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  3. A. Kumaraswamy
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Correspondence to J. Babu.

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Babu, J., Dutta, A. & Kumaraswamy, A. Flow Behaviour of Ti-6Al-4V Subjected to Multi Directional Isothermal Compression. Trans Indian Inst Met 68 (Suppl 1), 105–108 (2015). https://doi.org/10.1007/s12666-015-0630-9

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  • DOI: https://doi.org/10.1007/s12666-015-0630-9

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