Lattice preferred orientation and stress in polycrystalline hcp-Co plastically deformed under high pressure

Sébastien Merkel, Nobuyoshi Miyajima, Daniele Antonangeli, Guillaume Fiquet, Takehiko Yagi

doi:10.1063/1.2214224

Lattice preferred orientation and stress in polycrystalline hcp-Co plastically deformed under high pressure

DOI PDF 被引用文献3件

Sébastien Merkel

University of Tokyo Institute for Solid State Physics, , Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8581, Japan
Nobuyoshi Miyajima

University of Tokyo Institute for Solid State Physics, , Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8581, Japan
Daniele Antonangeli

European Synchrotron Radiation Facility , Boîte Postale 220, F-38043 Grenoble Cedex, France
Guillaume Fiquet

Université Pierre-et-Marie-Curie Institut de Minéralogie et de Physique des Milieux Condensés, UMR CNRS 7590, , Paris 6, 75015 Paris, France and , 4 Place Jussieu, 75252 Paris Cedex 05, France
Takehiko Yagi

University of Tokyo Institute for Solid State Physics, , Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8581, Japan
European Synchrotron Radiation Facility (ESRF)
Institute for Solid State Physics, University of Tokyo ; The University of Tokyo (UTokyo)
Institut de minéralogie et de physique des milieux condensés (IMPMC) ; Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)
Institute for Solid State Physics [Tokyo] (ISSP) ; The University of Tokyo (UTokyo)
Institut de minéralogie et de physique des milieux condensés (IMPMC) ; Université Pierre et Marie Curie - Paris 6 (UPMC)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)

書誌事項

公開日: 2006-07-15

DOI

10.1063/1.2214224

公開者: AIP Publishing

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説明

<jats:p>The results of x-ray diffraction data of a polycrystal under nonhydrostatic compression are analyzed for lattice preferred orientation and stress using lattice strain theories with an application to hcp-Co deformed up to 42.6GPa in the diamond anvil cell. We obtain a pure [001] fiber texture that develops primarily between 0 and 15GPa. We also show that for hcp metals the hypothesis of uniform stress across grains and lattice planes cannot be applied. This implies that the effective single crystal elastic moduli deduced from x-ray diffraction under Reuss or geometric averages consistently differ from those measured with other techniques, even after including effects of lattice preferred orientations. These results can be interpreted as an (hkl)-dependent effective differential stress resulting from plastic deformation.</jats:p>