Subgrain structure development in rocks and metals (MineralSubstructureDynamics) (FP 18)
Zusammenfassung der Projektergebnisse
The project produced a major step forward in the modelling of microstructures. In Elle it is now possible to simulate microstructural development (dynamic recrystallisation) in polyphase granular materials with minor second phases (e.g. rock salt with fluid inclusions or ice with clathrates), as well as major second phases (e.g. ice with air bubbles). It is now also possible to simulate deformation to very high strains. Achieving this proved to be no simple task, especially for 3D. Here major progress has been made, especially in the direction of linking the Ekolos code with the full-field FFT code for crystal-plastic deformation. However, this part of the work is not yet finished. The fact that the EuroMinScI-network was discontinued after the first funding period is a significant setback, as it (for the moment) stopped funding for the fruitful collaboration between Toulouse and Tübingen. Results from the 3DXRD synchrotron experiment, once processed, will certainly give new impetus to this part of the project. The new capabilities in 2D modelling have already resulted in several publications and for the base for current and future modelling, such as that of polar ice within another DFG project.
Projektbezogene Publikationen (Auswahl)
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Melt(ing) processes in the earth crust - an overview. Seminar at the University of Strasbourg, France, 2007
Becker, J.K.
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Modelling microstructure formation and phase transitions in Rocks - Practical application. Third Marie Curie Summer Schools on "Partial Melt and Amorphous Solids" 20-30 August 2007, Estremoz, Portugal
Becker, J.K.
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Movement of melt under static and dynamic conditions. Seminar at the University of Strasbourg, France, 2007
Becker, J.K.
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Rocks containing melt – current approach. Workshop on Future Applications of Neutron Texture and Powder Diffraction in the Geosciences, 2007, Munich Garching, Germany
Becker, J.K.
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(2008) A new front-tracking method to model anisotropic grain and phase boundary motion in rocks. Computers & Geosciences 34, 201-212
Becker, J.K., Bons, P.D., Jessell, M.W.
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2008. Evolution of microstructure and melt topology in partially molten granitic mylonite: Implications for rheology of felsic middle crust. J. Geophys. Res., 113, B10406
Schulman,K., Martelat, J.-E., Ulrich, S.,Lexa, O., Stipska, P., Becker, J.K.
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2008. The Kinetics of Fluid Inclusions in Recrystallizing Rocks - Evidence from Analogue and Numerical Models. DDG-Meeting, Aachen
Schmatz, J, Bons, P.D., Becker, J.K., Urai, J.L.
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(2009) Phase-field simulations of partial melts in geological materials. Computers & Geosciences 35, 1907-1916
Wendler, F., Becker, J., Nestler, B., Bons, P.D., Walte, N.P.
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2009. 3D grain boundary migration. DRT-Meeting, Liverpool
Becker, J.K., Bons, P.D.
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2009. A tale of two viscosities. Journal of Structural Geology 31, 719-736
Jessell, M.W., Bons, P.D., Griera, A., Evans, L.A., Wilson, C.J.L.
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2009. The effect of microstructure on grain growth rate, in particular in ice. DRT Meeting, Liverpool
Roessiger, J., Bons, P.D., Griera, A., Evans, L.
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Microstructural Modelling with Elle. Workshop on "Characterization, interpretation and modelling of metamorphic textures". July 2009, Prague, Czech Republic
Bons, P.D.
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"Microstructures and Physico-Chemical Properties of Earth and Planetary Materials". Workshop by the Italian Society of Mineralogy and Petrology and the European Research Network "Crust to Core (c2c). February 2010, Verbania, Italy
Bons, P.D.
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(2010) Numerical simulations of microstructures using the Elle platform: A modern research and teaching tool. Journal of the Geological Society of India 75, 110-127
Piazolo, S., Jessell, M.W., Bons, P.D., Evans, L., Becker, J.K.
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2010. Influence of air bubbles in ice on grain growth. 12th PCI conference, Sapporo
Roessiger, J., Bons, P.D., Faria, S.H., Weikusat, I.
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2010. The application of in-situ 3D X-ray Diffrction in anealing experiments: First interpretation of substructure development in deformed NaCl. ReX & GG IV, Sheffield
Borthwick, V., Schmidt, S., Piazolo, S., Gundlach, C., Griera, A., Bons, P.D., Jessell, M.W.
