Modeling polycrystals with regular polyhedra
Document title: Modeling polycrystals with regular polyhedra
Journal: Materials research
Database: PERIÓDICA
System number: 000312944
ISSN: 1516-1439
Authors: 1
2
Institutions: 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
Year:
Season: Abr-Jun
Volumen: 9
Number: 2
Pages: 231-236
Country: Brasil
Language: Inglés
Document type: Nota breve o noticia
Approach: Analítico
English abstract 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
Keyword: 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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