Effect of misorientation on the compression of highly anisotropic single-crystal micropillars

Soler, R.; Molina Aldareguía, Jon M.; Segurado Escudero, Javier y Llorca Martinez, Francisco Javier (2012). Effect of misorientation on the compression of highly anisotropic single-crystal micropillars. "Advanced Engineering Materials", v. 14 (n. 11); pp. 1004-1008. ISSN 1438-1656.

Descripción

Título: Effect of misorientation on the compression of highly anisotropic single-crystal micropillars
Autor/es:
  • Soler, R.
  • Molina Aldareguía, Jon M.
  • Segurado Escudero, Javier
  • Llorca Martinez, Francisco Javier
Tipo de Documento: Artículo
Título de Revista/Publicación: Advanced Engineering Materials
Fecha: 2012
Volumen: 14
Materias:
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img] PDF (Document Portable Format) - Acceso permitido solamente a usuarios en el campus de la UPM - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (676kB)

Resumen

The effect of crystal misorientation, geometrical tilt, and contact misalignment on the compression of highly anisotropic single crystal micropillars was assessed by means of crystal plasticity finite element simulations. The investigation was focused in single crystals with the NaCl structure, like MgO or LiF, which present a marked plastic anisotropy as a result of the large difference in the critical resolved shear stress between the “soft” {110}〈110〉 and the “hard” {100}〈110〉 active slip systems. It was found that contact misalignment led to a large reduction in the initial stiffness of the micropillar in crystals oriented in the soft and hard direction. The crystallographic tilt did not modify, however, the initial crystal stiffness. From the viewpoint of the plastic response, none of the effects analyzed led to significant differences in the flow stress when the single crystals were oriented along the “soft” [100] direction. Large differences were found, however, if the single crystal was oriented in the “hard” [111] direction as a result of the activation of the soft slip system. Numerical simulations were in very good agreement with experimental literature data.

Más información

ID de Registro: 16012
Identificador DC: http://oa.upm.es/16012/
Identificador OAI: oai:oa.upm.es:16012
URL Oficial: http://onlinelibrary.wiley.com/doi/10.1002/adem.201200019/abstract
Depositado por: Memoria Investigacion
Depositado el: 09 Ene 2014 15:59
Ultima Modificación: 22 Sep 2014 11:10
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM