Identification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatment
The Fe-bearing intermetallic phases present in the as-cast AA6026 alloy and their evolution during homogenization treatments at 480-550°C were investigated using optical microscopy, SEM, and TEM techniques in combination with EDS analysis. In addition to the α-Al(Fe,Mn)Si phase with dendritic morpho...
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University of Belgrade, Technical Faculty, Bor
2023-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300028R.pdf |
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| author | Radetić T. Popović M. Novaković M. Rajić V. Romhanji E. |
| author_facet | Radetić T. Popović M. Novaković M. Rajić V. Romhanji E. |
| author_sort | Radetić T. |
| collection | DOAJ |
| description | The Fe-bearing intermetallic phases present in the as-cast AA6026 alloy and their evolution during homogenization treatments at 480-550°C were investigated using optical microscopy, SEM, and TEM techniques in combination with EDS analysis. In addition to the α-Al(Fe,Mn)Si phase with dendritic morphology, two types of plate-like Fe-bearing microconstituents were revealed in the microstructure of the as-cast alloy. The EDS microanalysis and electron diffraction showed that one set of platelets represented thin sections of α-Al(Fe,Mn)Si microconstituent. The other set of plate-like microconstituents was identified as a tetragonal, silicon-rich δ-Al4(Fe,Mn)Si2 phase. The formation of the δ-Al4(Fe,Mn)Si2 phase was attributed to the chemical composition of the alloy. During homogenization, the metastable δ-Al4(Fe,Mn)Si2 transformed into the α-Al(Fe,Mn)Si phase and fragmented. The dendritic α-Al(Fe,Mn)Si microconstituents underwent fragmentation. However, while the α-Al(Fe,Mn)Si microconstituents preserved a b.c.c. crystal lattice throughout the process, the product of the transformation of the δ-Al4(Fe,Mn)Si2 phase exhibited primitive cubic lattice. |
| format | Article |
| id | doaj-art-3ca128f5cb3c43409973b0e3444bc3e7 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-3ca128f5cb3c43409973b0e3444bc3e72025-02-03T07:48:35ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752023-01-0159232733810.2298/JMMB230611028R1450-53392300028RIdentification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatmentRadetić T.0Popović M.1Novaković M.2https://orcid.org/0000-0001-7103-0117Rajić V.3Romhanji E.4University of Belgrade, Faculty of Technology and Metallurgy, Belgrade, SerbiaUniversity of Belgrade, Faculty of Technology and Metallurgy, Belgrade, SerbiaUniversity of Belgrade, Department of Atomic Physics, Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, Belgrade, SerbiaUniversity of Belgrade, Department of Atomic Physics, Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, Belgrade, SerbiaUniversity of Belgrade, Faculty of Technology and Metallurgy, Belgrade, SerbiaThe Fe-bearing intermetallic phases present in the as-cast AA6026 alloy and their evolution during homogenization treatments at 480-550°C were investigated using optical microscopy, SEM, and TEM techniques in combination with EDS analysis. In addition to the α-Al(Fe,Mn)Si phase with dendritic morphology, two types of plate-like Fe-bearing microconstituents were revealed in the microstructure of the as-cast alloy. The EDS microanalysis and electron diffraction showed that one set of platelets represented thin sections of α-Al(Fe,Mn)Si microconstituent. The other set of plate-like microconstituents was identified as a tetragonal, silicon-rich δ-Al4(Fe,Mn)Si2 phase. The formation of the δ-Al4(Fe,Mn)Si2 phase was attributed to the chemical composition of the alloy. During homogenization, the metastable δ-Al4(Fe,Mn)Si2 transformed into the α-Al(Fe,Mn)Si phase and fragmented. The dendritic α-Al(Fe,Mn)Si microconstituents underwent fragmentation. However, while the α-Al(Fe,Mn)Si microconstituents preserved a b.c.c. crystal lattice throughout the process, the product of the transformation of the δ-Al4(Fe,Mn)Si2 phase exhibited primitive cubic lattice.https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300028R.pdf6xxx alloysfe-bearing microconstituentsδ-al4(fe, mn)si2 phasehomogenizationphase transformation |
| spellingShingle | Radetić T. Popović M. Novaković M. Rajić V. Romhanji E. Identification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatment Journal of Mining and Metallurgy. Section B: Metallurgy 6xxx alloys fe-bearing microconstituents δ-al4(fe, mn)si2 phase homogenization phase transformation |
| title | Identification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatment |
| title_full | Identification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatment |
| title_fullStr | Identification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatment |
| title_full_unstemmed | Identification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatment |
| title_short | Identification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatment |
| title_sort | identification of fe bearing phases in the as cast microstructure of aa6026 alloy and their evolution during homogenization treatment |
| topic | 6xxx alloys fe-bearing microconstituents δ-al4(fe, mn)si2 phase homogenization phase transformation |
| url | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300028R.pdf |
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