Abstract
The dynamic compression tests of Mg–1Zn–2Y (wt.%) alloy were carried out by a split Hopkinson pressure bar (SHPB) device at room temperature and a strain rate of 1524–2106 s−1. Based on the electron back-scattering diffraction test result, it was found that with the increase in the strain rate, the proportion of {10_12} 1tensile twinning-basal slip participating in the deformation first increased and then decreased. While the proportion of prismatic < a > slip, pyramidal < a > slip, pyramidal < c + a > slip, dynamic recrystallization, and grain boundary slip in deformation increased gradually. The Johnson–Cook constitutive model of Mg–1Zn–2Y alloy was established by the experimental data. The result of constitutive simulation was very accurate, and the error was controlled within 6%.
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Acknowledgements
The experiment was completed in the Key Laboratory of Magnesium Alloys and the Processing Technology of Liaoning Province. Thanks to all the members of the laboratory. Furthermore, this work was supported by National Natural Science Foundation of China (No. 51571145), City of Ningbo "science and technology innovation 2025" major special project (new energy vehicle lightweight magnesium alloy material precision forming technology) (No. 2018B10045).
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Tang, W., Kang, S. & Liu, Z. Dynamic Compression Deformation and Constitutive Model of Extruded Mg–1Zn–2Y Bar. Trans Indian Inst Met 74, 2967–2975 (2021). https://doi.org/10.1007/s12666-021-02372-w
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DOI: https://doi.org/10.1007/s12666-021-02372-w