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Severe plastic deformation for obtaining nanometric and ultrafine-grained materials
Procesos de severa deformación plástica para obtener materiales de grano nanométricos y ultrafinos
DOI:
https://doi.org/10.15446/ing.investig.v27n1.14787Keywords:
severe plastic deformation (SPD), ultra-fine grain, mechanical milling (en)severa deformación plástica SDP, grano ultrafino, molienda mecánica (es)
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The aim of this paper is to provide a general overview of nanocrystalline and ultra-fine grain material production using severe plastic deformation (SPD), this being one of the most active research fields in the mechanical processing of materials. The paper gives an explanation of the more important SPD techniques (mechanical milling, equal channel angular pressing, high pressure torsion, extrusion-compression and accumulated roll-bond) as regards fundamental principles, advantages and limitations. Some experimental results for iron and copper obtained by this paper’s authors are attached. These materials’ great potential is shown in several fields of use, especially in the aerospace industry. Current research prospects are also referred to in terms of structural and mechanical behavior and the development of large-scale industrial processing.
El objetivo del artículo es dar una visión global de uno de los más activos campos de investigación en el procesamiento mecánico de materiales metálicos como es la obtención de materiales con grano nanométrico y ultrafino a través de la severa deformación plástica SDP. Se realiza una descripción de las más importantes técnicas pertenecientes a SDP, como lo son: la molienda mecánica, presión en canal angular constante, torsión a alta presión, unión por laminación acumulada, extrusión-compresión refiriéndose a los principios fundamentales, ventajas y limitaciones de cada una de ellas. Se incluyen resultados experimentales obtenidos por los presentes autores en la preparación de hierro y cobre. Adicionalmente, se presenta el gran potencial que tienen estos materiales en diferentes campos de aplicación, especialmente en la industria aeroespacial. Finalmente, se hace referencia a tendencias actuales de investigación comprendiendo dos áreas fundamentales, el estudio del comportamiento microestructural y mecánico, y el desarrollo de métodos de procesamiento escalables a nivel industrial.
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Copyright (c) 2007 Rodolfo Rodríguez Baracaldo, Jose Antonio Benito Páramo, José María Cabrera Marrero
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