Modeling polycrystals with regular polyhedra



Título del documento: Modeling polycrystals with regular polyhedra
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312944
ISSN: 1516-1439
Autors: 1
2
Institucions: 1Universidade Federal Fluminense, Escola de Engenharia Industrial Metalurgica de Volta Redonda, Volta Redonda, Rio de Janeiro. Brasil
2Rensselaer Polytechnic Institute, Department of Materials Science and Engineering, Troy, New York. Estados Unidos de América
Any:
Període: Abr-Jun
Volum: 9
Número: 2
Paginació: 231-236
País: Brasil
Idioma: Inglés
Tipo de documento: Nota breve o noticia
Enfoque: Analítico
Resumen en inglés Polycrystalline structure is of paramount importance to materials science and engineering. It provides an important example of a space-filling irregular network structure that also occurs in foams as well as in certain biological tissues. Therefore, seeking an accurate description of the characteristics of polycrystals is of fundamental importance. Recently, one of the authors (MEG) published a paper in which a method was devised of representation of irregular networks by regular polyhedra with curved faces. In Glicksman's method a whole class of irregular polyhedra with a given number of faces, N, is represented by a single symmetrical polyhedron with N curved faces. This paper briefly describes the topological and metric properties of these special polyhedra. They are then applied to two important problems of irregular networks: the dimensionless energy 'cost' of irregular networks, and the derivation of a 3D analogue of the von Neumann-Mullins equation for the growth rate of grains in a polycrystal
Disciplines Ingeniería,
Química
Paraules clau: Ingeniería de materiales,
Química de polímeros,
Policristales,
Microestructuras,
Propiedades físicas,
Métodos analíticos
Keyword: Engineering,
Chemistry,
Materials engineering,
Polymer chemistry,
Polycrystals,
Microstructures,
Physical properties,
Analytical methods
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