The workshop extends over two weeks and is part of the master course Introduction into crystallographic texture analysis and counts for 5 ECTS points. While the first week is mainly devoted to beginners in MTEX and/or texture analysis, the second week is a meeting of MTEX users with different experiences to share specific use cases, tips and tricks and discuss recent and upcoming developments in MTEX. A special focus will be the new features of MTEX 6.0 which includes pseudo 3d functionality for EBSD and grains and multiple spatial reference systems.

Week 1: Learning Crystallographic Texture Analysis with MTEX

Date: 04.03.2024 - 8.03.2024

During the first week we provide on a daily basis lectures covering the principles of EBSD, texture and crystallography and their relation to plastic deformation and macroscopic properties. All concepts will be illustrated via practical examples during the exercises within MTEX.

Lecture 0 - General Concepts: video , slides
Matlab basics and general concepts of MTEX, the class vector3d, spherical coordinates

Lecture 1 - EBSD slides , video
data import, reference frame alignment, pole figures, inverse pole figures, color keys

Exercise 1 script , solution , data , video

Lunch

Lecture 2 - Orientations and Symmetries slides , video
crystal lattice, direct and reciprocal coordinate system, Miller indices, zonal axes, crystal shapes, point groups, Laue groups, symmetrically equivalent orientations, pole figures, inverse pole figures, fundamental sectors

Exercise 2 script , solution , video

Lecture 3 - Grains slides , video
segmentation, shape properties, orientation properties, grain selection, grain statistics

Exercise 3 script , solution , data , video

Lunch

Lecture 4 - Misorientations and Grain Boundaries slides , video , slides
grain boundary misorientations, misorientation axis, misorientation angle, KAM, GOS, IGMA, twin boundaries, tilt vs. twist boundaries, orientation, gradients, statistics of boundary networks

Exercise 4 script 1 , solution 1 , data 1 , script 2 , solution 2 , data 2 , video

Excursion: Freiberg Silver Mine

Lunch

Lecture 5 - Density Functions slides , slides , video
kernel density estimation, orientation density function, pole density function, inverse pole density function, model ODFs, ODF characteristics, random sampling, ODF reconstuction from XRD data

Exercise 5 script , solution , video
Lecture 6 - EBSD Denoising and Alignment of the Reference Frame slides , video , video


Exercise 6 - Grain Boundaries and Misorientations script 1 , solution 1 , data 1 , script 2 , solution 2 , data 2 , video


Lunch

Lecture 7 - Tensorial Properties slides , video
tensor arithmetic, visualization, effect of symmetry, thermal expansion, stress and strain tensors, piezoelectricity, elasticity, wave velocities


Exercise 7 - From Single Grain to Bulk Tensors script , video
average tensors (Voigt, Reuss, Hill) from EBSD and ODF
Lecture 8 - EBSD reference systems script , video
how to set up your EBSD system for MTEX

Lecture 9 - Plasticity script , video
deformation tensors, slip systems, dislocation systems, Schmid Factor, Taylor factor, combining MTEX with external software like VPSC

lunch

Lecture 10 - Parent Grain Reconstuction script , video
determination of orientation relationships, phase transition, parent grain reconstruction, transformation textures, variant selection

Free Discussion of Personal Data Sets

Times: Lecture 1: 8:00 - 9:30, Exercise 1: 10:00 - 11:30, Lecture 2: 13:00-14:30, Exercise 2: 15:00 - 16:30

Week 2: MTEX in Applications

Date: 11.03.2024 - 13.03.2024

The second week is a get together of new and experienced MTEX users to share their use cases of MTEX, research results and MTEX specific tricks and tips. There will be introductory lectures by invited experts that explain their workflow in specific applications of MTEX. To encourage discussions we plan with slots of 20 minutes talks followed by 10 minute discussions. As we expect a very heterogeneous auditorium we kindly ask the participants to keep their talks as accessible as possible.

Keynote Speakers

  • Dorian Depriester (Ecole Nationale Supérieure d’Arts et Métiers, Aix-en-Provence): Mechanical behaviour of polycrystals: from EBSD to numerical simulations

  • Thomas Griffiths (Universität Wien): Unravelling the evolution of partially molten silicate systems using EBSD and MTEX

  • Claire Griesbach (ETH Zürich): Rate-dependent ferroelectric switching mechanisms in lead zirconium titanate elucidated by spherically indexed EBSD patterns

  • Katharina Marquardt (University of Oxford): Grain boundary complexion transition in Forsterite, an EBSD study

  • Alec Saville (National Institute of Standards and Technology, USA): Connecting Microstructure, Processing, and Phase Transformations in Metals Via MTEX.

  • Marco Witte (Salzgitter Mannesmann): Steel: Production, Processing and MTEX

Time Schedule

Time Speaker Title
9:00−10:00 T. Griffiths Unraveling the evolution of partially molten silicate systems using EBSD and MTEX video
Coffee
10:30−11:00 V. Tong TrueEBSD distortion correction and grain boundary smoothing video
11:00−11:30 T. Nyyssönen Three-dimensional shape metrics of transformation products from two-dimensional orientation maps: ongoing work video
11:30−12:00 F. Niessen Parent Grain Reconstruction in MTEX - a journey beyond default parameters video
Lunch
13:30−14:30 K. Marquardt canceled Grain boundary complexion transition in Forsterite, an EBSD study
14:30−15:00 R. Kühn Clay mineral textures from the hikurandi margin
Coffee
15:30−15:50 D. Souza High Pressure - high temperature deformation experiments to understand deep earthquakes video
15:50−16:10 G. Lopez Mechanical Implications of Mica Bearing rocks video
16:10−16:30 G. McGill Micro Porosity in plastically deformed Quartz video
Short walk through Freiberg
18:00 Dinner at Stadtwirtschaft Freiberg
Time Speaker Title
8:30−9:30 C. Griesbach Rate-dependent ferroelectric switching mechanisms in lead zirconium titanate elucidated by spherically indexed EBSD patterns video
9:30−10:00 L. Richter Spherical indexing of pseudo symmetries video
Coffee
10:30−11:00 P. Prathik A synergistic approach to characterize anisotropic materials using ultrasound and microstructural analysis (online) video
11:00−11:30 T. Vermeij Local Identification of Deformation Twinning from Deformation Fields video
11:30−12:00 C. Mornout Methodology for Local Identification of Grain Boundary Sliding on the Nanoscale video
Lunch
13:30−14:30 A. Saville Connecting Microstructure, Processing, and Phase Transformations in Metals Via MTEX (online) video
14:30−15:00 D. Guan Track-Rex: a universal toolbox for tracking recrystallization and grain growth behaviors in polycrystalline materials. (online) video
Coffee
15:00−16:00 D. Depriester Mechanical behaviour of polycrystals: from EBSD to numerical simulations video
16:00−16:20 B. Jacobsen MTEX 6.0 and Grain3d - the current state video
16:20−16:40 R. de Oliveira Melo Relation between microstructure and mechanical properties of a 17-4PH grade steel manufactured by additive manufacturing Powder Bed Fusion Laser Based technique video
Time Speaker Title
8:30−9:30 M. Witte Steel: Production, Processing and MTEX video
9:30−10:00 V. Babic EBSD analysis workflows – Efficient, automatic, easy! video
Coffee
10:30−11:00 K. Molodov On the effect of microalloying on retained austenite in hot-dip galvanized multiphase steels video
11:00−11:20 J. Dietrich Slip trace and texture analysis in wrought magnesium alloys video
11:20−11:40 S. Mohagheghi Determination of orientation relationships in three-phase eutectic grains video
11:40−12:00 H. Sofiane Meddas Use of OR tool for variant pairing analysis and secondary carbide precipitation of tempered tool steel: Impact of multiple austenitization cycles on mechanical properties video
Lunch
13:30−14:30 Round Table Discussion
Coffee

Venue:

please use the keycode “Professor Hielscher MTEX Workshop” when booking the rooms

Hotel Kreller: 80 Euro per night with breakfast, very close

Hotel am Obermarkt: 79 Euro per night without breakfast, very close

Elly Hostel: 77 Euro per night, with kitchen

Registration:

Registration Fee:

  • first + second week (presence): (PhD) students - 400 Euro, other - 600 Euro
  • first + second week (online): (PhD) students - 200 Euro, other - 300 Euro
  • second week: (PhD) students - 100 Euro, other - 200 Euro
  • Payment includes Lunch for all days and Excursion fee
  • Registration for students of the TU Freiberg, the TU Chemnitz and the University of Halle is free of charge

Organizers:

Ralf Hielscher (TU Bergakademie Freiberg), Rüdiger Kilian (Universität Halle), Luiz Morales (ETH Zürich), Frank Niessen (DTU Dänemark)