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Fig. 1


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Microstructure of the three investigated metallurgical states, as observed in longitudinal sections. The normal direction of the initial sheet is vertical; the (last) rolling direction is horizontal for the two cold-rolled samples. a: Fully recrystallized state; FSE (Forward Scattered Electron) micrograph; b: After 25% thickness reduction by cold rolling; FSE micrograph; c: After 92% thickness reduction by cold rolling; BSE (Back Scattered Electron) micrograph. Both types of micrographs, FSE and BSE exhibit orientation contrast.

Microstructures observées dans une section longitudinale pour les trois états métallurgiques étudiés. La direction normale à la tôle dans son état initial est verticale. En (b) et (c), la (dernière) direction de laminage est horizontale. a : État recristallisé ; micrographie FSE ; b : État après réduction de 25 % par laminage à froid ; micrographie FSE ; c : Après réduction de 92 % par laminage à froid ; micrographie BSE. Les deux types de micrographie FSE et BSE présentent un contraste d’orientation.

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