Abstract
A new hybrid discrete-continuum cellular automata approach is proposed to simulate the process of new phase/grain nucleation and growth. The method couples classical thermomechanics and the logics of cellular automata switching. Within the framework of the hybrid discrete-continuum cellular automata method, the space occupied by the simulated specimen is represented as a cellular automaton—a set of ordered active elements. Every element imitates an immovable region of space related to a part of material being characterized by the certain numerical parameters. The proposed approach enables calculating the magnitude of the local force moments and simulating dissipation of torsion energy leading to the formation of new defect structures. To illustrate the capacity of the proposed hybrid discrete-continuum cellular automata approach, the numerical simulations of thermally activated recrystallization of pure titanium near crack faces were conducted. The 3D cellular automaton simulated the microstructure evolution of the V-notched specimen region that imitated the crack tip vicinity at high homologous temperatures. Calculation of heat expansion with simultaneous thermal stresses accumulation and microrotation initiation was incorporated in the simulations permitting thereby to evaluate the local entropy and to monitor the evolution of crystal defects from initiation to storage. Perspectives of the proposed algorithms for simulations of the mechanical behavior of materials experiencing thermally induced twining or phase transformations are discussed.
Similar content being viewed by others
References
Ren, F., Chen, F., and Chen, J., Investigation on Dynamic Recrystallization Behavior of Martensitic Stainless Steel, Adv. Mater. Sci. Eng., 2014. doi https://doi.org/10.1155/2014/986928
Wang, Y., Shao, W.Z., Zhen, L., Lin, L., and Cui, Y.X., Investigation on Dynamic Recrystallization Behavior in Hot Deformed Superalloy Inconel 718, Mater. Sci. Forum, 2007, pp. 546–549, 1297–1300. doi https://doi.org/10.4028/www.scientific.net/MSF.546-549.1297
Panin, V.E., Egorushkin, V.E., Moiseenko, D.D., Maksimov, P.V., Kulkov, S.N., and Panin, S.V., Functional Role of Polycrystal Grain Boundaries and Interfaces in Micromechanics of Metal Ceramic Composites under Loading, Comp. Mater. Sci., 2016, vol. 116, pp. 74–81. doi https://doi.org/10.1016/j.commatsci.2015.10.045
Moiseenko, D.D., Maksimov, P.V., Panin, S.V., and Panin, V.E., Defect Accumulation in Nanoporous Wear-Resistant Coatings under Collective Recrystallization. Simulation by Hybrid Cellular Automaton Method, Proc. VII Eur. Cong. Comput. Meth. Appl. Sci. Eng. Papadrakakis, M., Papadopoulos, V., Stefanou, G., Plevris, V., Eds., Crete Island, Greece, 5–10 June 2016, vol. 1, pp. 2080–2098.
Moiseenko, D.D., Panin, S.V., Maksimov, P.V., Panin, V.E., and Berto, F., Behavior of Nanoporous Thermal Barrier Coatings under Cyclic Thermal Loading. Computer-Aided Simulation, AIP Conf. Proc., 2015, vol. 1683, pp. 20152–1–020152–5. doi https://doi.org/10.1063/1.4932842
Moiseenko, D.D., Panin, V.E., and Elsukova, T.F., Role of Local Curvature in Grain Boundary Sliding in a Deformed Polycrystal, Phys. Mesomech., 2013, vol. 16, no. 4, pp. 335–347. doi https://doi.org/10.1134/S1029959913040073
Moiseenko, D.D., Pochivalov, Yu.I., Maksimov, P.V., and Panin, V.E., Rotational Deformation Modes in Near-Boundary Regions of Grain Structure in a Loaded Polycrystal, Phys. Mesomech., 2013, vol. 16, no. 3, pp. 248–258. doi https://doi.org/10.1134/S1029959913030077
Panin, S.V., Vinogradov, A., Moiseenko, D.D., Maksimov, P.V., Berto, F., Byakov, A.V., Eremin, A.V., and Narkevich, N.A., Numerical and Experimental Study of Strain Localization in Notched Specimens of a Ductile Steel on Meso- and Macroscales, Adv. Eng. Mater., 2016, vol. 18, pp. 2095–2106. doi https://doi.org/10.1002/adem.201600206
Moiseenko, D.D., Panin, V.E., Maksimov, P.V., Panin, S.V., and Berto, F., Material Fragmentation as Dissipative Process of Micro Rotation Sequence Formation: Hybrid Model of Excitable Cellular Automata, AIP Conf. Proc., 2014, vol. 1623, pp. 427–430. doi https://doi.org/10.1063/1.4898973
Moiseenko, D.D., Panin, S.V., Maksimov, P.V., Panin, V.E., Babich, D.S., and Berto, F., Computer Simulation of Material Behavior at the Notch Tip: Effect of Microrotations on Elastic Energy Release, AIP Conf. Proc., 2016, vol. 1783, pp. 020157–1–020157–5. doi https://doi.org/10.1063/1.4966450
Humphreys, F.J. and Hatherly, M., Recrystallization and Related Annealing Phenomena, Oxford: Elsevier, 2004.
Kroc, J., Application of Cellular Automata Simulations to Modelling of Dynamic Recrystallization, Lect. Notes Comput. Sci., 2002, vol. 2329, pp. 773–782. doi https://doi.org/10.1007/3-540-46043-8_78
Godara, A. and Raabe, D., Mesoscale Simulation of the Kinetics and Topology of Spherulite Growth during Crystallization of Isotactic Polypropylene (iPP) by Using a Cellular Automaton, Model. Simul. Mater. Sci. Eng., 2005, vol. 13, pp. 733–751. doi https://doi.org/10.1088/0965-0393/13/5/007
Kuhn, F., Zeismann, F., and Brückner-Foit, A., Crack Growth Mechanisms in an Aged Superalloy at High Temperature, Int. J. Fatig., 2014, vol. 65, pp. 86–92.
Funding
This work was performed within the frame of direction of research III.23 of Basic Research Program of State Academies of Sciences for 2013–2020. The work was also supported by the RFBR grant No. 18-08-00516_a and the RF President Council Grant for the support of leading research schools NSh-2718.2020.8.
Author information
Authors and Affiliations
Corresponding author
Additional information
Russian Text © The Author(s), 2018, published in Fizicheskaya Mezomekhanika, 2018, Vol. 21, No. 5, pp. 23–33.
Rights and permissions
About this article
Cite this article
Moiseenko, D.D., Maksimov, P.V., Panin, S.V. et al. Recrystallization at Crack Surfaces as a Specific Fracture Mechanism at Elevated Temperatures—Cellular Automata Simulation. Phys Mesomech 23, 1–12 (2020). https://doi.org/10.1134/S1029959920010014
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1029959920010014