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Title: Identification of sub-grains and low angle boundaries beyond the angular resolution of EBSD maps

A new method called ALGrId (Anti-Leak GRain IDentification) is proposed for the detection of sub-grains beyond the relative angular resolution of Electron Backscatter Diffraction maps. It does not use any additional information such as Kikuchi Pattern Quality map nor need data filtering. It uses a modified Dijkstra algorithm which seeks the continuous set of boundaries having the highest average disorientation angle. - Highlights: • ALGrId is a new method to identify sub-grains and low angle boundaries in EBSD maps. • Unlike classical methods, ALGrId works even beyond the relative angular resolution. • If the orientation noise peaks at 0.7°, ALGrid detects 0.4°-boundaries correctly. • In the same example, the classical algorithm identifies 1.1°-boundaries only.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [2] ;  [4] ;  [1] ;  [2]
  1. Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), UMR 7239, CNRS/Université de Lorraine, F-57045 Metz (France)
  2. (‘LabEx DAMAS’), Université de Lorraine (France)
  3. Laboratoire d'Informatique Théorique et Appliquée (LITA), EA3079, Université de Lorraine, 57045 Metz Cedex 1 (France)
  4. (IJL), SI2M Dept., CNRS UMR 7198, Université de Lorraine, Parc de Saurupt, CS 50840, F-54011 Nancy Cedex (France)
Publication Date:
OSTI Identifier:
22403603
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 98; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALGORITHMS; BACKSCATTERING; DETECTION; ELECTRON DIFFRACTION; GRAIN BOUNDARIES; KIKUCHI LINES; NOISE; ORIENTATION; RESOLUTION