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Compressive deformation behavior of Al 2024 alloy using 2D and 4D processing maps

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Abstract

The hot deformation behavior of Al 2024 was studied by isothermal hot compression tests in the temperature range of 250–500 °C and strain rate range of 10−3 to 102 s−1 in a computer-controlled 50 kN servo-hydraulic universal testing machine (UTM). The results show that the flow stress of Al 2024 alloy increases with strain rate and decreases after a peak value, indicating dynamic recovery and recrystallization. The processing map exhibits two domains of optimum efficiency for hot deformation at different strains, including the low strain rate domain at 500 °C and between 10−2 and 10−1 s−1 and the high strain rate domain in 250 and 300 °C in the strain rate range of 101 to 102 s−1. An attempt has been made in this article to generate a new hybrid 4D process map which illustrates contours of power dissipation and instability in the 3D space of strain rate, temperature, and strain.

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Acknowledgements

The authors are thankful to the Director, AMPRI, Bhopal for granting the permission to publish this article, Prof. V. Rao for helping in revising the technical content of the article. The authors are also thankful to the reviewers for their invaluable comments and suggestions, without which the article may not be in the present form.

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Authors and Affiliations

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

    Sasi Bhushan Bhimavarapu, Amit Kumar Maheshwari, Deepti Bhargava & Shashi Prakash Narayan

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  1. Sasi Bhushan Bhimavarapu
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  2. Amit Kumar Maheshwari
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  3. Deepti Bhargava
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  4. Shashi Prakash Narayan
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Correspondence to Amit Kumar Maheshwari.

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Bhimavarapu, S.B., Maheshwari, A.K., Bhargava, D. et al. Compressive deformation behavior of Al 2024 alloy using 2D and 4D processing maps. J Mater Sci 46, 3191–3199 (2011). https://doi.org/10.1007/s10853-010-5203-z

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  • DOI: https://doi.org/10.1007/s10853-010-5203-z

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