Microstructures, textures & anisotropy
Geosciences Montpellier, F
28 June - 2 July, 2010
Organisers: Andréa Tommasi & David Mainprice
Intervenants: Andréa Tommasi, David Mainprice, Alain Vauchez, Luiz Fernando Morales
Objective: Show the relations between crystalline structure, deformation, and anisotropy of physical properties from the crystal to the aggregate and larger scales. Theoretical classes will present the origin and description of anisotropy for different properties, the processes leading to the development of textures, and the consequences of textures and anisotropy in both Earth and Materials Sciences. Practicals on measurement, representation, and analysis of textures will be performed using the EBSD facilities at UM2. Another series of practical classes will deal with the measurement and calculation of anisotropic physical properties.
Participants: Crystal2Plate fellows + 8-10 external participants
Preliminary program:
- Monday - 28 June
- 9h-9h15: Introduction
- 9h30-12h: Basic notions of crystallography & symmetry
- 14h-17h: Introduction to crystal plasticity – deformation mechanisms, microstructures & crystallographic orientations
- Tuesday - 29 June
- 9h-10h30: Notions of electronic diffraction and the EBSD technique
- 10h45-12h30: EBSD data: euler angles, representations and reference frames
- 14h-16h: Practicals:
- Groups 1 & 2: acquisition of EBSD data
- Groups 3 & 4: deformation microstructures as seen by optical microscopy
- 16h-18h: Practicals:
- Groups 1 & 2: acquisition of EBSD data
- Groups 3 & 4: deformation microstructures as seen by optical microscopy
- Wednesday - 30 June
- 9h-10h15: Practical: Treatment and representation of EBSD data 1 : CHANNEL
- 10h30-12h30: Practical: Treatment and representation of EBSD data 2 : freeware programs by David Mainprice & Mathlab-based Freiberg suite
- 14h-17h: Interpretation of CPO – from ESBD data to deformation mechanisms (course & practical)
- Thursday - 1st July
- 9h-12: Anisotropy of physical properties: from the crystal to the rock scale
- 14h-16h: Practical: Calculation of thermal and seismic properties of rocks (polycrystalline aggregates) from single crystal tensors and EBSD data
- 16h-17h30: From crystal & rock-scale anisotropic properties to mantle dynamics
- Friday - 2nd July
- 9h-12h: Numerical models of crystal preferred orientation evolution during plastic deformation : linking textures to slip systems activity and deformation regimes
- 14h-17h: Practical: Crystal plasticity models
Contact: Andréa Tommasi