Rapid electron backscatter diffraction mapping: Painting by numbers
File(s)Resubmission_v1_nl.pdf (2.12 MB)
Accepted version
Author(s)
Tong, Vivian S
Knowles, Alexander J
Dye, David
Ben Britton, T
Type
Journal Article
Abstract
Microstructure characterisation has been greatly enhanced through the use of electron backscatter diffraction (EBSD), where rich maps are generated through analysis of the crystal phase and orientation in the scanning electron microscope (SEM). Conventional EBSD analysis involves raster scanning of the electron beam and serial analysis of each diffraction pattern in turn. For grain shape, crystallographic texture, and microstructure analysis this can be inefficient. In this work, we present Rapid EBSD, a data fusion approach combining forescatter electron (FSE) imaging with static sparse sampling of EBSD patterns. We segment the FSE image into regions of similar colour (i.e. phase and crystal orientation) and then collect representative EBSD data for each segmented region. This enables microstructural assessment to be performed at the spatial resolution of the (fast) FSE imaging whilst including orientation and phase information from EBSD analysis of representative points. We demonstrate the Rapid EBSD technique on samples of a cobalt based superalloy and a strained dual phase titanium alloy, comparing the results with conventional analysis. Rapid EBSD is advantageous for assessing grain size distributions in time-limited experiments.
Date Issued
2019-01-01
Date Acceptance
2018-11-13
Citation
Materials Characterization, 2019, 147 (1), pp.271-279
ISSN
1044-5803
Publisher
Elsevier
Start Page
271
End Page
279
Journal / Book Title
Materials Characterization
Volume
147
Issue
1
Copyright Statement
© 2018 Elsevier Inc. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Royal Academy Of Engineering
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (E
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000457510100030&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
EP/K034332/1
RF/129
138874
N/A
Subjects
Science & Technology
Technology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Materials Science, Characterization & Testing
Materials Science
Microstructure
Electron imaging
Sparse sampling
ABNORMAL GRAIN-GROWTH
ORIENTATION
EBSD
Publication Status
Published
Date Publish Online
2018-11-14