Some of the posters we present at conferences are available for download here. Those with crop marks in the corners are high quality and can be given to your printer for production.

Most are A0 size but the same file can be easly resized for printing at any smaller size.

EBSD Posters

An EBSD Study of Texture Variation along Pilger Reduced Titanium Alloy Tubes

This study investigates the changes in radial micro-texture via Kearn’s f-factors during single cold pilger reduction of a titanium Ti-3-2.5 alloy as a result of strain path changes from tooling modifications. EBSD results confirm that the texture intensity as well as the radial f-factors can be increased by modifications of pilgering tooling. In addition a switch between the secondary prism planes which lie normal to the pilger direction in the starting tube to primary prism planes after pilgering has been observed.

PDF 1.11MB
Accuracy of EBSD orientation measurement

The precision and accuracy of routine EBSD measurements is constrained by many factors, while the angular resolution of standard EBSD systems is often quoted from 0.5° – 0.7° (Humphreys 2001).Fundamental to the EBSD technique is the method of identifying and locating the Kikuchi bands, hence the method chosen is one of the main factors determining the measurement accuracy and precision.

Conventional, fast band detection routines use a 2-D Hough transform (only). The limitations of the 2-D Hough transform for band detection are well documented (e.g. Maurice & Fortunier 2008). Up to a limit, accuracy and precision can be improved by increasing the Hough resolution. However, this results in a very large (and generally unacceptable) increase in computation time. Ultimately, accuracy is limited by a systematic error in applying the 2-D Hough to Kikuchi band detection: Kikuchi bands are hyperbolic, not straight. Band detection routines which rely solely on the 2-D Hough will be in error – a refinement to the detection routine is required. A new method (patent pending) is described.

PDF 2.06MB
Advanced EBSD Preparation

Excellent sample preparation is the key to successful materials characterisation, especially using EBSD, as any residual surface deformation impairs Kikuchi pattern formation. Residual deformation is difficult to minimise under normal mechanical polishing in many applications. This poster shows how Broad Beam Ion Milling has been used to produce excellent samples from zirconium and magnesium alloys and galvanized zinc coatings, usually difficult to prepare by mechanical routes only.

PDF 9.04MB
EBSD Analysis of Large Sample Areas

In material characterisation it is very important to collect statistically representative datasets. The interpretation of data collected from small sample areas may not fully describe the sample.

The requirement to collect EBSD data over large sample areas is not new, but as EBSD and EDS technology improves, it is possible to acquire ever larger datasets from larger areas and at higher speeds, while maintaining the highest quality results. Recent development for large area mapping within the AZtec® microanalysis suite enables the unattended collection of high resolution data (images with simultaneous EBSD and EDS maps) from large specimen areas.

PDF 12.40MB
EBSD and TKD Investigations using FIB

The use of Focussed Ion Beam (FIB) to produce ‘lift out’ lamellae and to dissect small particles is proving to be very useful for SEM investigation using EDS, EBSD and Transmission Kikuchi Diffraction (TKD). Previously the production of lift out samples using FIB was almost universally applied to the production of TEM samples. Using a nanomanipulator, it is possible to create thin sections or precision sectioned particles, and then to perform EDS, EBSD or TKD analysis directly on the sections in the SEM, either attached to support grids or ‘on tip’.

PDF 5.74MB
Evolution of EBSD Patterns during Sample Preparation

Successful EBSD work for characterizing and quantifying microstructures requires good metallographic preparation procedures. This study is an attempt to illustrate how EBSD patterns evolve through the various metallographic preparation steps using duplex steel and alumina samples as examples.

PDF 25.14MB

Dr Ziad Melhem of Oxford Instruments NanoScience will be giving a talk at MIT on the enabling technologies, require… https://t.co/MDz2SojzYv
5:21 PM - 16 Feb 18
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