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 on grain boundary statistics and new functionalities in MTEX 6.1. Participation is possible in presence as well as remotely.

Week 1: Learning Crystallographic Texture Analysis with MTEX

Date: 03.03.2025 - 07.03.2025

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 (Rüdiger Kilian) slides , video
principle concept, data import, basic data cleanup, orientation maps, color keys

Exercise 1 script , solution , data , video

Lunch

Lecture 2 - Orientations and Symmetries (Ralf Hielscher) 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 , data , video

Lecture 3 - Grains (Rüdiger Kilian) slides , video
segmentation, shape properties, orientation properties, grain selection, grain statistics

Exercise 3 script , video

Lunch

Lecture 4 - Misorientations and Grain Boundaries (Vivian Tong) slides , mlx-script , video
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 , data , mlx-script , video

Lecture 5 - Density Functions (Ralf Hielscher) slides 1 , slides 2 , 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 , video

Lunch

Excursion: Terra Mineralia (Mineral exhibition)
Lecture 6 - How to set up your EBSD map correctly (Vivian Tong) script , video
Correction of spatial coordinates, reference frame alignment, denoising

Exercise 6 - TrueEBSD for intragranular misorientation analysis script , mlx-script , video


Lunch

Lecture 7 - Quantitative Microstructure Analysis (Rüdiger Kilian) slides , video
grain shape, grain boundary and grain size statistics


Exercise 7 - Fabric Analysis script , video
Lecture 8 - Plasticity (Ralf Hielscher) slides , video
deformation tensors, slip systems, dislocation systems, Schmid Factor, Taylor factor,

Exercise 8 - Plasticity script , video

lunch

Lecture 9 - Parent Grain Reconstruction (Ralf Hielscher) script , video
determination of orientation relationships, phase transition, parent grain reconstruction, transformation textures, variant selection

Free Discussion of Personal Data Sets script , data 1 , data 2

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: 10.03.2025 - 13.03.2025

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

Time Schedule

Time Speaker Title
9:00−10:00 J. Q. da Fonseca Experimental and computational studies in light alloys exploiting MTEX video
Coffee
10:30−11:00 T. Mineau In situ experimentation on a magnesium alloy to constrain feedbacks between strain localization and microstructure evolution video
11:00−11:30 H. W. Ånes 2D correlation of second-phase particles and grains in an Al-Mn alloy video
11:30−12:00 V. Tong Grain boundary reconstruction video
Lunch
13:30−14:30 R. Hielscher Grain boundary normal distributions video
14:30−15:00 F. Bachmann Approximation of the ODF and its application to pole figure Inversion video
Coffee
15:30−16:00 H. Bilan In-Situ SEM Tensile Testing as a Method of Microstructural Analysis: Comparative Observations for Additively Manufactured and Cold Rolled 316L Stainless Steel video
16:00−16:30 P. Hegele Influence of the PBF-LB/M Process Parameters on the Retained Austenite Fraction in the Solidification Microstructure of Hot-Work Tool Steels video
16:30−17:00 M. Bolan Characterization of plastic deformation in 316L expanded austenite video
Short walk through Freiberg
18:00 Dinner at Tre Viet Freiberg
Time Speaker Title
9:000−10:00 B. E. Sörrensen Customizing EBSD analysis and interpretation using MTEX and MATLAB – advantages of the scripting approach video
Coffee
10:30−11:00 U. Faul Dislocation Structures in Experimentally Deformed Olivine video
11:00−11:30 N. M. Cohen (online) A New Tool to Quantify Crystallographic Preferred Orientation (CPO) of Olivine video
11:30−12:00 T. Griffiths Quantifying microstructures in partially amorphous samples: easy testing of many processing parameters using MTEX video
Lunch
13:30−17:00 Excursion
Time Speaker Title
9:00−10:00 D. Savage Quantitative texture analysis in x-ray and neutron diffraction video
Coffee
10:30−11:00 T. Vermeij In situ EBSD and TKD micromechanical testing video
11:00−11:30 P. Kroeker Implementation of deformation twin analysis in MTEX: A case study on Rhenium video
11:30−12:00 B. Beichert Microstructural Evolution under Tribological Load video
Lunch
13:30−14:30 K. Marquardt Grain boundaries in Olivine: Using EBSD for the study of complexion transitions and why they matter
14:30−15:00 R. Kühn CPO and microstructure in oceanic serpentinites
Coffee
15:30−16:00 V. Akker Fluid-assisted replacement in calcite veins
16:00−16:30 R. Kilian Recrystalized grains and the weighted burgers vector video
16:30−17:00 E. Avrahami Coccoliths: Complex Nano-scale Crystals Constructed With Simple Principles video
18:30-21:00 Dinner at Stadtwirtschaft Freiberg
Time Speaker Title
9:00−10:00 G. Nolze The importance of a proper indexing in centred lattices video
Coffee
10:30−11:00 R. Purushottam LaueNN: Neural network based hkl recognition of Laue spots and its application to polycrystalline materials video
11:00−11:30 L. Richter Resolving pseudosymmetric domains - an MTEX usecase video
Lunch
13:30−14:30 Round Table Discussion
Coffee

Venue:

Please make sure that you are planning to travel to Freiberg (Saxony). There are other cities in Germany with a similar name.
Location of the Workshop: Hörsaalgebäude, Prüferstraße 4
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 and the University of Halle is free of charge

Organizers:

Ralf Hielscher (TU Bergakademie Freiberg), Rüdiger Kilian (Universität Halle), Luiz Morales (ETH Zürich), Vivian Tong (National Physical Laboratory UK)