T. Radetic, M. Popovic, M. Novakovic, V. Rajic, E. Romhanji
{"title":"AA6026合金铸态组织中含铁相的识别及其在均匀化处理过程中的演变","authors":"T. Radetic, M. Popovic, M. Novakovic, V. Rajic, E. Romhanji","doi":"10.2298/jmmb230611028r","DOIUrl":null,"url":null,"abstract":"The Fe-bearing intermetallic phases present in the as-cast state of an AA6026 alloy and their evolution during homogenization treatments at 480-550?C were studied by optical microscopy, SEM, and TEM techniques combined with EDS analysis. Besides the ?- Al(Fe,Mn)Si phase of 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 represents just thin sections of ?-Al(Fe,Mn)Si microconstituent. The other set of plate-like microconstituents was identified as a tetragonal, silicon-rich ?-Al4(Fe,Mn)Si2 phase. The formation of the ?- Al4(Fe,Mn)Si2 phase has been attributed to the chemical composition of the alloy. During homogenization, metastable ?-Al4(Fe,Mn)Si2 transformed into the ?-Al(Fe,Mn)Si phase and fragmented. The dendritic ?-Al(Fe,Mn)Si microconstituents underwent fragmentation as well. However, whereas ?-Al(Fe,Mn)Si microconstituents preserve b.c.c. crystal lattice throughout the process, the product of the transformation of the ?-Al4(Fe,Mn)Si2 phase exhibited primitive cubic lattice.","PeriodicalId":16479,"journal":{"name":"Journal of Mining and Metallurgy, Section B","volume":"25 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Identification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatment\",\"authors\":\"T. Radetic, M. Popovic, M. Novakovic, V. Rajic, E. Romhanji\",\"doi\":\"10.2298/jmmb230611028r\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The Fe-bearing intermetallic phases present in the as-cast state of an AA6026 alloy and their evolution during homogenization treatments at 480-550?C were studied by optical microscopy, SEM, and TEM techniques combined with EDS analysis. Besides the ?- Al(Fe,Mn)Si phase of 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 represents just thin sections of ?-Al(Fe,Mn)Si microconstituent. The other set of plate-like microconstituents was identified as a tetragonal, silicon-rich ?-Al4(Fe,Mn)Si2 phase. The formation of the ?- Al4(Fe,Mn)Si2 phase has been attributed to the chemical composition of the alloy. During homogenization, metastable ?-Al4(Fe,Mn)Si2 transformed into the ?-Al(Fe,Mn)Si phase and fragmented. The dendritic ?-Al(Fe,Mn)Si microconstituents underwent fragmentation as well. However, whereas ?-Al(Fe,Mn)Si microconstituents preserve b.c.c. crystal lattice throughout the process, the product of the transformation of the ?-Al4(Fe,Mn)Si2 phase exhibited primitive cubic lattice.\",\"PeriodicalId\":16479,\"journal\":{\"name\":\"Journal of Mining and Metallurgy, Section B\",\"volume\":\"25 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Mining and Metallurgy, Section B\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2298/jmmb230611028r\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Mining and Metallurgy, Section B","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2298/jmmb230611028r","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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 state of an AA6026 alloy and their evolution during homogenization treatments at 480-550?C were studied by optical microscopy, SEM, and TEM techniques combined with EDS analysis. Besides the ?- Al(Fe,Mn)Si phase of 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 represents just thin sections of ?-Al(Fe,Mn)Si microconstituent. The other set of plate-like microconstituents was identified as a tetragonal, silicon-rich ?-Al4(Fe,Mn)Si2 phase. The formation of the ?- Al4(Fe,Mn)Si2 phase has been attributed to the chemical composition of the alloy. During homogenization, metastable ?-Al4(Fe,Mn)Si2 transformed into the ?-Al(Fe,Mn)Si phase and fragmented. The dendritic ?-Al(Fe,Mn)Si microconstituents underwent fragmentation as well. However, whereas ?-Al(Fe,Mn)Si microconstituents preserve b.c.c. crystal lattice throughout the process, the product of the transformation of the ?-Al4(Fe,Mn)Si2 phase exhibited primitive cubic lattice.
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