Micropillar compression of LiF [111] single crystals: effect of size, ion irradiation and misorientation

Soler, R.; Molina Aldareguía, Jon M.; Segurado Escudero, Javier; Llorca Martinez, Francisco Javier; Merino, R.I. y Orera, V.M. (2012). Micropillar compression of LiF [111] single crystals: effect of size, ion irradiation and misorientation. "International Journal of Plasticity", v. 36 ; pp. 50-63. ISSN 0749-6419. https://doi.org/10.1016/j.ijplas.2012.03.005.

Descripción

Título: Micropillar compression of LiF [111] single crystals: effect of size, ion irradiation and misorientation
Autor/es:
  • Soler, R.
  • Molina Aldareguía, Jon M.
  • Segurado Escudero, Javier
  • Llorca Martinez, Francisco Javier
  • Merino, R.I.
  • Orera, V.M.
Tipo de Documento: Artículo
Título de Revista/Publicación: International Journal of Plasticity
Fecha: Septiembre 2012
Volumen: 36
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]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (4MB) | Vista Previa

Resumen

The mechanical response under compression of LiF single crystal micropillars oriented in the [111] direction was studied. Micropillars of different diameter (in the range 1–5 lm) were obtained by etching the matrix in directionally-solidified NaCl–LiF and KCl–LiF eutectic compounds. Selected micropillars were exposed to high-energy Ga+ ions to ascertain the effect of ion irradiation on the mechanical response. Ion irradiation led to an increase of approximately 30% in the yield strength and the maximum compressive strength but no effect of the micropillar diameter on flow stress was found in either the as-grown or the ion irradiated pillars. The dominant deformation micromechanisms were analyzed by means of crystal plasticity finite element simulations of the compression test, which explained the strong effect of micropillar misorientation on the mechanical response. Finally, the lack of size effect on the flow stress was discussed to the light of previous studies in LiF and other materials which show high lattice resistance to dislocation motion.

Más información

ID de Registro: 15918
Identificador DC: http://oa.upm.es/15918/
Identificador OAI: oai:oa.upm.es:15918
Identificador DOI: 10.1016/j.ijplas.2012.03.005
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0749641912000459
Depositado por: Memoria Investigacion
Depositado el: 28 Oct 2013 11:57
Ultima Modificación: 02 Oct 2014 22:56
  • 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