Abstract
In order to study the static recrystallization behavior of GCr15 steel during hot deformation process, two-pass hot compression experiments were conducted on Gleeble-3500 thermo-simulation system at the test temperatures from 850 to 1150 °C strain rate from 0.01 to 1 s−1, strain from 0.05 to 0.15 and inter-stage delay time from 1 to 100 s, respectively. The effects of temperature, strain rate and strain on static recrystallization of GCr15 steel were discussed in details. And the kinetic equations, in which the tension-time index n was 0.35 and the activation energy Q was 225.86 kJ/mol, were proposed. The comparison between the experimental results and predicted results was performed and the research results indicated that the effects of deformation parameters on the static recrystallization in multi-stage hot deformation are significant. The predicted results are in good agreement with the experimental ones, which indicates that the proposed kinetic equations can give an accurate estimate of the static recrystallization behaviors and microstructural evolutions for GCr15 steel.
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Acknowledgments
This work was supported by the State Key Development Program for Basic Research of China (Grant No. 2011CB706605) and “the Fundamental Research Funds for the Central Universities (No. 125107002)”. The authors would like to gratefully acknowledge the support from them.
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Mao, H., Zhang, R., Hua, L. et al. Study of Static Recrystallization Behaviors of GCr15 Steel Under Two-Pass Hot Compression Deformation. J. of Materi Eng and Perform 24, 930–935 (2015). https://doi.org/10.1007/s11665-014-1264-5
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DOI: https://doi.org/10.1007/s11665-014-1264-5