Further Insight into Interfacial Interactions in Iron/Liquid Zn-Al System
| Autor: | Florence Bertrand, Jean-Michel Mataigne, Céline Musik, Patrick Barges, Marion Descoins, David Zapico-Álvarez, Marie-Laurence Giorgi, Dominique Mangelinck |
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| Přispěvatelé: | Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
0211 other engineering and technologies Nucleation Intermetallic chemistry.chemical_element 02 engineering and technology Zinc Atom probe 01 natural sciences law.invention symbols.namesake law 0103 physical sciences 021102 mining & metallurgy 010302 applied physics Metallurgy Metals and Alloys [CHIM.MATE]Chemical Sciences/Material chemistry Condensed Matter Physics Microstructure Galvanization chemistry Chemical engineering Mechanics of Materials Transmission electron microscopy symbols Layer (electronics) |
| Zdroj: | Metallurgical and Materials Transactions A Metallurgical and Materials Transactions A, Springer Verlag/ASM International, 2020, 51 (5), pp.2391-2403. ⟨10.1007/s11661-020-05669-5⟩ Metallurgical and Materials Transactions A, 2020, 51 (5), pp.2391-2403. ⟨10.1007/s11661-020-05669-5⟩ |
| ISSN: | 1073-5623 |
| DOI: | 10.1007/s11661-020-05669-5⟩ |
| Popis: | International audience; In the galvannealing process, steel strips are immersed in molten zinc containing 0.100 to 0.135 wt pct Al at 450°C. The coating obtained is composed of a thin intermetallic compounds' layer called the inhibition layer (200 nm) covered with a thick zinc layer (10 lm). The nature of this inhibition layer has been investigated here for a galvanizing bath with a low Al content. The inhibition layer formed on industrial low-alloyed steels was characterized by transmission electron microscopy and atom probe tomography. The inhibition layer is composed of a thin Fe 2 Al 5 Zn x layer (20 nm), covered with a thicker d layer (200 nm). The Fe 2 Al 5 Zn x layer is discontinuous at the lowest bath Al content. Small precipitates (20 nm in diameter) with a stoichiometry corresponding to Fe 3 Al-containing Zn were also found for the first time in the d phase. The microstructure of the inhibition layer can be described with diffusion paths drawn in the Al-Fe-Zn ternary section at 450°C. This means that all interfaces of the inhibition layer are at thermodynamic equilibrium. The Fe 2 Al 5 Zn x layer is formed on the steel surface before the d layer. The nucleation and growth of the Fe 3 Al-Zn particles probably occur in the liquid metal at the same time as d. |
| Databáze: | OpenAIRE |
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