Abstract
The adiabatic shear susceptibility of AISI321 stainless steels with different grain boundary character distributions (GBCDs) was investigated by means of split-Hopkinson pressure bar. The results indicate that the width of the adiabatic shear band of the specimen after thermomechanical processing (TMP) treatment is narrower. The comparison of the stress collapse time, the critical stress, and the adiabatic shear forming energy suggests that the TMP specimens have lower adiabatic shear susceptibility than that of the solution-treated samples under the same loading condition. GBCD and grain size affected the adiabatic shear susceptibility. The high-angle boundary network of the TMP specimens was interrupted or replaced by the special grain boundary, and smaller grain size hindered the adiabatic shearing.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (No. 51274245), NSAF (No. U1330126), the Ph.D. Programs Foundation of Ministry of Education of China (No. 20120162130006), the key project of State Key Laboratory of Explosion Science and Technology (No. KFJJ11-1), and the Natural Science Fund of Hunan (No. 14 jj2011).
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Manuscript submitted November 20, 2015.
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Yang, Y., Jiang, L., Luo, S. et al. Effect of Grain Boundary Character Distribution on the Adiabatic Shear Susceptibility. Metall Mater Trans A 47, 5589–5597 (2016). https://doi.org/10.1007/s11661-016-3721-2
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DOI: https://doi.org/10.1007/s11661-016-3721-2