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2019
Journal Article
Titel
Pressure induced local phase transformation in nanocrystalline tetragonal zirconia microparticles
Abstract
Mechanical properties and local martensitic phase transformation of individual nanocrystalline zirconia microspheres were assessed by complementary (in situ) electron microscopy techniques. Particles were deformed by compression in a SEM and the local structure was determined by ex situ SAED of a FIB prepared lamella. The local texture and amount of transformed grains can be explained by a continuum-like behavior modelled by FEM calculations: The phase transformation is found for grains which are preferentially oriented with respect to the deviatoric stresses and show the rotation of the maximum shear stress during the experiment.
Author(s)
Weller, Horst
Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
Schwenger, Jan
Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr. 4, 91058 Erlangen, Germany
Romeis, Stefan
Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr. 4, 91058 Erlangen, Germany
Herre, Patrick
Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr. 4, 91058 Erlangen, Germany
Yokosawa, Tadahiro
Institute of Micro- and Nanostructure Research and Center for Nanoanalysis and Electron Microscopy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr. 6, 91058 Erlangen, Germany
Finsel, Maik
Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
Leib, Elisabeth W.
Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
Vossmeyer, Tobias
Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
Spiecker, Erdmann
Institute of Micro- and Nanostructure Research and Center for Nanoanalysis and Electron Microscopy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr. 6, 91058 Erlangen, Germany
Project(s)
M3 Maßgeschneiderte multiskalige Materialsysteme. C6