PSI - Issue 50

A.S. Smirnov et al. / Procedia Structural Integrity 50 (2023) 266–274 A.S. Smirnov, A.V. Konovalov,V.S. Kanakin and I.A. Spirina / Structural Integrity Procedia 00 (2022) 000 – 000

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4. Conclusions 1. The structural hierarchical model of flow stress described in this paper can, with acceptable engineering accuracy, simulate the rheological behavior and evolution of dynamic recrystallization of the V95 alloy at a temperature of 400 °C with strain rates ranging between 0.01 and 5 s−1. 2. The strain and strain rate dependence of the volume portion of dynamic recrystallization, obtained according to the model, shows that, at a temperature of 400 °C, the amount of dynamically recrystallized grains in the V95 alloy increases with strain rate. Dynamic recrystallization has a noticeable effect on the shape of the flow stress curve at strain rates exceeding 0.5 s−1, thus leading to the appearance of a pronounced peak in the flow stress curves.

Acknowledgments

The work was financially supported by the RSF (project No. 22-29-00428) in the part of constructing and verifying a rheological model of alloys and composites.

References

Watanabe, T., 2011. Grain boundary engineering: historical perspective and future prospects. J. Mater. Sci. 46, 4095 – 4115. Cardarelli, F., 2008. Materials Handbook: A Concise Desktop Reference. ISBN 978 - 1 - 84628 - 668 - 1. Doherty, R.D., Hughes, D.A., Humphreys, F.J., Jonas, J.J., Juul Jensen, D., Kassner, M.E., King, W.E., McNelley, T.R., McQueen, H.J., Rollet t, A.D., 1997. Current issues in recrystallization: A review. Mater. Sci. Eng. A. 238, 219 – 274. Tikhonova, M., Kaibyshev, R., Belyakov, A., 2018. Microstructure and Mechanical Properties of Austenitic Stainless Steels after Dynamic and Post - Dynamic Recrystallization Treatment. Adv. Eng. Mater. 20, 1 – 27. Lin, G., Zhang, Z., Wang, H., Zhou, K., Wei, Y., 2016. Enhanced strength and electrical conductivity of Al - Mg - Si alloy by thermo - mechanical treatment. Mater. Sci. Eng. A 650, 210 – 217. Kimura, Y., Inoue, T., 2020. Mechanical property of ultrafine elongated grain structure steel processed by warm tempforming and its application to ultrahigh - strength bolt. ISIJ Int. 60, 1108 – 1126. Zupanc, J., Vahdat - Pajouh, N., Schäfer, E., 2018. New thermomechanically treated N iTi alloys – a review. Int. Endod. J. 51, 1088 – 1103. Smirnov, A.S., Konovalov, A. V., Pushin, V.G., Uksusnikov, A.N., Zvonkov, A.A., Zajcev, I.M., 2014. Peculiarities of the Rheological Behavior for the Al - Mg - Sc - Zr Alloy Under High - Temperature Deformation. J. Mater. Eng. Perform. 23, 4271 – 4277. Smirnov, A.S., Konovalov, A. V., Belozerov, G.A., Shveikin, V.P., Smirnova, E.O., 2016. Peculiarities of the rheological behavior and structure formation of aluminum under deformation at near - solidus temperatures. Int. J. Miner. Metall. Mater. 23, 563 – 571. Rollett, A., Humphreys, F., Rohrer, G.S., Hatherly, M., 2004. Recrystallization and Related Annealing Phenomena. Elsevier Ltd. Smirnov, S. V., Konovalov, A. V., Myasnikova, M. V., Khalevitsky, Y. V., Smirnov, A.S., Igumnov, A.S., 2018. A Numerical Study of Plastic Strain Localization and Fracture in Al/SiC Metal Matrix Composite. Phys. Mesomech. 21, 305 – 313. Yang, B., Gao, M., Wang, Y., Guan, R., 2022. Dynamic recrystallization behavior and mechanical properties resp onse of rheo - extruded Al – Mg alloys with various Mg contents. Mater. Sci. Eng. A. 849, 143450. Smirnov, S. V., 2013. Accumulation and healing of damage during plastic metal forming: Simulation and experiment. Key Eng. Mater. 528, 61 – 69. Trusov, P., Kondratev, N., Podsedertsev, A., 2022. Description of Dynamic Recrystallization by Means of an Advanced Statistical Multilevel Model: Grain Structure Evolution Analysis. Crystals. 12, 653. Trusov, P. V., Shveykin, A.I., Nechaeva, E.S., Volegov, P.S., 2012. Multilevel models of inelastic deformation of materials and their application for description of internal structure evolution. Phys. Mesomech. 15, 155 – 175. Su, Z. - X., Sun, C. - Y., Fu, M. - W., Qian, L. - Y., 2019. Physical - based constitutive model considering the microstructure evolution during hot working of AZ80 magnesium alloy. Adv. Manuf. 7, 30 - 41 Karhausen, K.F., Roters, F., 2002. Development and application of constitutive equations for the multiple - stand hot rolling of Al - alloys. J. Mater. Process. Technol. 123, 155 – 166. Konovalov, A. V, Smirnov, A.S., 2008. Viscoplastic model for the strain resistance of 08Kh18N10T steel at a hot - deformation temperature. Russ. Metall. 2008, 138 – 141. Smirnov, A.S., Konovalov, A. V, Muizemnek, O.Y., 2015. Modelling and simulation of strain resistance of alloys taking into account barrier effects. Diagnostics, Resour. Mech. Mater. Struct., 61 – 72. Wang, Y., Peng, J., Zhong, L., Pan, F., 2016. Modeling and application of constitutive model considering the compensation of strain during hot deformation. J. Alloys Compd. 681, 455 – 470.