GROWTH OF INTERMETALLIC PHASES DURING INTERDIFFUSION BETWEEN STEEL AND ALUMINUM

Type : Article de conférence
Auteur(s) :  Sabrina Mendil, Kamel Taïbi, Said Azem, Noura Harb
Année :  2012
Domaine : Electronique
Conférence: 3ème Conférence Internationale sur le Soudage, le CND et l’Industrie des Matériaux et Alliages (IC-WNDT-MI’12)
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Fulltext en PDF :  (.pdf)
Mots clés :  Aluminized steel, intermetallic Compounds, X-rays Diffraction, Scanning Electron Microscopy

Résumé : 

The morphology and microstructure of an intermetallic layer formed on the surface of Fe-0.4%C by hot-dip aluminization treatment have been examined in detail. The intermetallic layer growing toward the steel substrate possessed a tongue-like morphology which delimited by a strong concentration of pearlite.The phases present in the coating are identified by X-rays diffraction and electron microscopy. After aluminization, three layers were formed, external Aluminum layer, intermetallic layer and a steel substrate. The results reveals that the intermetallic layer is composed of mainly Fe 2Al5 phase according to the EDS and DRX analysis and a thin layer of Fe3Al phase which is adjacent to the steel