Journal of Materials Research and Technology Journal of Materials Research and Technology
J Mater Res Technol 2018;7:337-41 DOI: 10.1016/j.jmrt.2018.05.001
Original Article
Microstructural descriptors to characterize computer simulated microstructures generated by nucleation on a Kelvin polyhedra network
Guilherme Dias da Fonseca, , Felipe da Silva Siqueira, André Luiz Moraes Alves, Weslley Luiz da Silva Assis, Paulo Rangel Rios
Universidade Federal Fluminense, Escola de Engenharia Industrial Metalúrgica de Volta Redonda, Av. dos Trabalhadores, 420, Volta Redonda, RJ 27255-125, Brazil
Received 17 November 2017, Accepted 03 May 2018
Abstract

Computer simulation is used to generate microstructures by nucleation on a 3D network of Kelvin polyhedra. The Kelvin polyhedra network was used as a model for a polycrystalline network. Information provided by usual descriptors of microstructural evolution: the volume fraction and mean interfacial area density are perhaps insufficient to fully characterize those microstructures. Therefore, microstructural descriptors that are less often used such as the contiguity, the contiguity ratio, the dispersion parameter and the duplex parameter were tested. These parameters showed to be able to increase the understanding of the microstructural changes for Kelvin polyhedra/grain boundary nucleated transformations. The contiguity and the dispersion parameter were particular useful to provide better understanding of the microstructural evolution studied here.

Keywords
Computer simulation, Microstructure, Nucleation and growth transformations, Kelvin polyhedron, Polycrystal, Stereology
J Mater Res Technol 2018;7:337-41 DOI: 10.1016/j.jmrt.2018.05.001
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