¡Descarga Crystalline Networks in Metallic Materials: Structure and Bravais Networks y más Guías, Proyectos, Investigaciones en PDF de Elasticidad y Resistencia de materiales solo en Docsity!
CRYSTAL NETWORKS
José Juan Alcántara Suárez, Guanajuato Polytechnic University,
[email protected]
Francisco Javier Beltrán Delgadillo, Guanajuato Polytechnic University,
[email protected]
After looking at many materials through a microscope, we can realize that almost all metal materials have an orderly structure, or rather, crystalline.
But all structures are equal, usually the solids of nature are crystalline, which implies that the ions, atoms or molecules that constitute them are ordered geometrically in space ( Figure 1.1 ), sometimes this ordered structure is not noticeable at first glance because they are formed by a group of microcrystals oriented in different ways giving rise to polycrystalline structures, apparently amorphous ( Figure 1.2 ).
The internal structure of the crystals is represented by the so-called unitary or elementary cell ( Figure 2.1 ), which is the smallest set of atoms that maintain the same geometric properties of the crystalline network and that when expanded in the 3 directions of space are constructed a crystalline network ( Figure 2.2 ).
Figure 1.2 Non-Geometric Crystal Structure
Figure 1.1 Geometric Crystal Structure
Figure 2.1 Unit Cell or Elemental
Figure 2.2 Crystal Net
Bravais networks
Augusto Bravais in the nineteenth century was the first to propose the hypothesis of the reticular structure of minerals. At present, fourteen crystalline networks called Bravais networks have been discovered ( Figure 3.1 ).
Figure 3.1 Bravais Networks
Of the fourteen Bravais networks, only four are of crystallization systems for metals and metal alloys, and there are the body-centered cubic networks, the face-centered cubic network, the compact hexagonal network and the body centered tetragonal network.
References:
Unknown autor (2019), e-ducativa catedu.es
http://e- ducativa.catedu.es/44700165/aula/archivos/repositorio/4750/4910/html/2_redes_cristalinas.htm l
Keywords:
Crystalline networks, metallic materials, ordered structure, solids of nature, ions, atoms or molecules, are arranged geometrically in space, grouping of microcrystalline structures, geometric crystal structure, non-geometric crystal structure, unitary or elementary cell, networks of Bravais.
