Weakly faceted cellular patterns versus growth-induced plastic deformation in thin-sample directional solidification of monoclinic biphenyl - Université Pierre et Marie Curie Accéder directement au contenu
Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2009

Weakly faceted cellular patterns versus growth-induced plastic deformation in thin-sample directional solidification of monoclinic biphenyl

Tamas Borzsonyi
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Silvère Akamatsu
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  • PersonId : 1001716
Gabriel Faivre
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  • PersonId : 837546

Résumé

We present an experimental study of thin-sample directional solidification (T-DS) in impure biphenyl. The platelike growth shape of the monoclinic biphenyl crystals includes two low-mobility (001) facets and four high-mobility \110\ facets. Upon T-DS, biphenyl plates oriented with (001) facets parallel to the sample plane can exhibit either a strong growth-induced plastic deformation (GID), or deformation-free weakly faceted (WF) growth patterns. We determine the respective conditions of appearance of these phenomena. GID is shown to be a long-range thermal-stress effect, which disappears when the growth front has a cellular structure. An early triggering of the cellular instability allowed us to avoid GID and study the dynamics of WF patterns as a function of the orientation of the crystal.

Dates et versions

hal-01239041 , version 1 (07-12-2015)

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Citer

Tamas Borzsonyi, Silvère Akamatsu, Gabriel Faivre. Weakly faceted cellular patterns versus growth-induced plastic deformation in thin-sample directional solidification of monoclinic biphenyl. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2009, 80 (5, 1), pp.051601. ⟨10.1103/PhysRevE.80.051601⟩. ⟨hal-01239041⟩
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