Data Presentation Options

Flexible Measurement Result Visualization

The analyst often faces the challenge of how to present data in a way that material properties of interest can easily be assessed. The ESPRIT software suite for EBSD offers a number of data representation tools to fulfill that need. The most important options are presented below.

Pattern quality map

Stainless Steel Pattern Quality Map
Stainless steel pattern quality map

This is an important tool for judging the quality of a measurement. Pattern quality is influenced by sample properties (e.g. phases, boundaries, lattice strain) and also by sample preparation. The quality at each point of the map is brightness coded to produce a gray scale image of pattern quality. These images are useful as a base for overlaying with other types of maps, as they show microstructural features like grain boundaries.

Phase map

Stainless Steel Pattern Quality and Phase Maps
Stainless steel, pattern quality overlaid
with phase map: ferrite (red), austenite
(blue), titanium nitride (green),
titanium sulfide (yellow)

All identified phases are displayed in a color-coded phase distribution map.

Pole figures

High Resolution Pole Figure
High resolution pole figure

Pole figures are one of the most common representation tools for orientation data. They show the distributions of the selected poles {hkl} considering all orientation measurements. Pole figures provide important information on strength of texture and also on which texture components are dominant. ESPRIT for EBSD generates pole figures and their corresponding diffraction sphere (viewed in 3D) in high resolution and with unprecedented speed.

Inverse pole figures (IPF)

Inverse Pole Figures
Inverse pole figures

While pole figures display crystal orientations with reference to the stage coordinate system, the IPFs describe a chosen stage system axis as a crystallographic vector. Since there are many symmetry-equivalent vectors, the IPFs are reduced to the symmetry-specific sub-spaces (as shown in the figure on the left).

Orientation distribution function

ODF Space Visualization for a Gold Film
ODF space visualization for a gold film
deposited on a silicon wafer

2D cuts and 3D visualization of the ODF space, using modern Open-GL technology for fast and interactive display.

IPF map

Stainless Steel Pattern Quality and IPFX Maps
Stainless steel, pattern quality map
overlaid with the IPFX map

An IPF map combines the locally detected orientation with the crystallographic description of a single reference direction. The color coding is scaled to the reduced size of the IPF.

Euler map

An Euler map displays the detected orientation at each point on the basis of the Euler angles which are encoded in RGB.

Detailed crystallographic information is always only a mouse click away

ESPRIT for EBSD Post Processing Workspace
The ESPRIT for EBSD post processing

ESPRIT for EBSD provides easy access to all data. The analyst can switch between two standard EBSD workspace displays. In acquisition mode it contains the SEM image, the phase list and a large area for maps and point information. A tool for arbitrary scan area selection is provided as well. In postprocessing mode the workspace enables useful interactions between orientation maps and pole figures.

Result display for every mapping point

Point Inspector
The Point Inspector

Detailed result information for individual measurements, corresponding to the current mouse cursor position, is given below the mapping. The point inspector feature can be activated simultaneously (online and offline) to show the pattern, pattern simulation, Hough transform, orientation of the unit cell (3D) and EDS spectrum, if available. All data can be exported from the point inspector.

Fast switching between result display modes

A bar containing thumbnails of all available maps can be found below the main window. Clicking on the thumbnail displays the according map in the result window.

Similar thumbnails can be found in the texture presentation workspace, where the user can add self-defined pole figures, inverse pole figures and the orientation distribution function. The tabs contain the information specific to each phase.

All maps and pole figure representations are dynamically refreshed during acquisition. Both maps and pole figures can be displayed in fullscreen mode.

More info

QUANTAX EBSD – Reinventing EBSD (PDF brochure)