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Modified Johnson–Cook material flow model for hot deformation processing

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Abstract

The need of a generalised flow curves considering strain (ε), strain rate (\( \dot{\varepsilon } \)) and temperature (T) is a primary requirement for material modelling related to several conventional and strategic mechanical processing to meet critical and non-critical engineering applications. The realistic coefficients of flow curves need to be obtained for such model. In the present study a modified Johnson–Cook (JC) material model has been proposed with physical significance. Six constants of this model can be obtained through the regression analysis. When compared to the JC model, proposed model is found to be more reliable for Al-2024 alloy.

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Acknowledgements

This work is the part of the Masters Thesis work of one of the author, Mr. Amit Maheshwari and he is thankful to the Barkatullah University, Bhopal and AMPRI, Bhopal for the permission and supervision provided by these institutes.

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Authors and Affiliations

  1. Advanced Materials & Processes Research Institute (CSIR), Bhopal, 462064, MP, India

    Amit Kumar Maheshwari, K. K. Pathak, N. Ramakrishnan & S. P. Narayan

Authors
  1. Amit Kumar Maheshwari
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  2. K. K. Pathak
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  3. N. Ramakrishnan
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  4. S. P. Narayan
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Correspondence to Amit Kumar Maheshwari.

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Maheshwari, A.K., Pathak, K.K., Ramakrishnan, N. et al. Modified Johnson–Cook material flow model for hot deformation processing. J Mater Sci 45, 859–864 (2010). https://doi.org/10.1007/s10853-009-4010-x

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  • DOI: https://doi.org/10.1007/s10853-009-4010-x

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