Abstract
Isothermal compression experiments have been adopted to systematically examine hot deformation behavior of 316L stainless steel on a simulator with 0.01–5 s−1 strain rate and 900–1100 °C temperature, and the results demonstrate that, in flow curves, both features of dynamic recrystallization (DRX) and dynamic recovery (DRV) can be observed. Besides, the constitutive model has been established, and the value of activation energy is obtained as 465.532 kJ mol−1. In addition, processing maps of different strains are also constructed. With microstructural observation, it can be found that the flow localization and mischcrystal structure occur while the hot deformation is performed on the instability domains (efficiency of power dissipation, \( \eta \), < 23%). The processing window is located at 0.01–0.056 s−1 strain rate and 1040–1100 °C temperature with the η higher than 35%. The optimal hot compression parameters are 1050 °C–0.01 s−1 with a peak efficiency of 38%, and the corresponding EBSD analysis shows a random distribution of DRX grains.
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This research was sponsored by National Natural Science Foundation of China (No. 2012AA03A501), and Jiangsu Province Key R&D Project of China (No. BE2017127).
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Chen, Ll., Luo, R., Yang, Yt. et al. Investigation on the Hot Deformation Behavior of 316L Stainless Steel Using 3D Processing Map. Trans Indian Inst Met 72, 2997–3006 (2019). https://doi.org/10.1007/s12666-019-01674-4
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DOI: https://doi.org/10.1007/s12666-019-01674-4