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

Lionel Germain (1, 2) , D. Kratsch (3) , M. Salib (1, 2, 4) , Nathalie Gey (1, 2)

1 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux
2 Labex DAMAS
3 LITA - Laboratoire d'Informatique Théorique et Appliquée
4 IJL - Institut Jean Lamour

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.

Mots clés: Dijkstra algorithm; ALGrId; Grain Boundary Completion; EBSD; Sub-grain; low-angle boundaries

Domaines: Sciences de l'ingénieur [physics]; Matériaux

Lionel Germain, D. Kratsch, M. Salib, Nathalie Gey. Identification of sub-grains and low angle boundaries beyond the angular resolution of EBSD maps. Materials Characterization, 2014, 98, pp.66-72. ⟨10.1016/j.matchar.2014.10.007⟩. ⟨hal-01503888⟩