Analysis of transformations nucleated on non-random sites simulated by cellular automata in three dimensions

• Published in: Materials research (São Carlos, São Paulo, Brazil) Vol. 10; no. 2; pp. 141 - 146
• Main Authors: Rios, Paulo Rangel, Pereira, Luciana de Oliveira, Oliveira, Flávio Faria de, Assis, Weslley Luiz da Silva, Oliveira, Valmir Torres de
• Format: Journal Article
• Language: English
• Published: ABM, ABC, ABPol 01-06-2007; Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
• Subjects: cellular automata; computer simulation; ENGINEERING, CHEMICAL; kinetics; MATERIALS SCIENCE, MULTIDISCIPLINARY; METALLURGY & METALLURGICAL ENGINEERING; microstructure; phase transformations; recrystallization; computer simulation; phase transformations; microstructure; recrystallization; kinetics; cellular automata
• ISSN: 1516-1439; 1980-5373; 1516-1439
• DOI: 10.1590/S1516-14392007000200008

Cellular automata simulation in three dimensions is carried out to simulate microstrutural evolution for nuclei distribution ranging from a periodic arrangement to clusters of nuclei. The effect of clustering in three dimensions is found to be much more difficult to detect using conventional microstructural path analysis than in two dimensions. Microstructural path equations fit simulated data well, even when the nuclei are non-randomly located. However, the parameters obtained by means of this fitting lead to erroneous time dependent velocities. Therefore, measuring a descriptor that is sensitive to non-randomness such as the contiguity is even more important in three than in two dimensions.