Identification of Fe-bearing phases in the as-cast microstructure of AA6026 alloy and their evolution during homogenization treatment
-
Published:2023
Issue:2
Volume:59
Page:327-338
-
ISSN:1450-5339
-
Container-title:Journal of Mining and Metallurgy, Section B: Metallurgy
-
language:en
-
Short-container-title:J min metall B Metall
Author:
Radetic T.1, Popovic M.1, Novakovic M.2ORCID, Rajic V.2, Romhanji E.1
Affiliation:
1. University of Belgrade, Faculty of Technology and Metallurgy, Belgrade, Serbia 2. University of Belgrade, Department of Atomic Physics, Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, Belgrade, Serbia
Abstract
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 ?-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 ?-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 was attributed to the chemical composition of the alloy. During homogenization, the metastable ?-Al4(Fe,Mn)Si2 transformed into the ?-Al(Fe,Mn)Si phase and fragmented. The dendritic ?-Al(Fe,Mn)Si microconstituents underwent fragmentation. However, while the ?-Al(Fe,Mn)Si microconstituents preserved a b.c.c. crystal lattice throughout the process, the product of the transformation of the ?-Al4(Fe,Mn)Si2 phase exhibited primitive cubic lattice.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
National Library of Serbia
Subject
Materials Chemistry,Metals and Alloys,Mechanics of Materials,Geotechnical Engineering and Engineering Geology
Reference48 articles.
1. G. Gosh, in Ternary Alloy Systems: Phase Diagrams, Crystallographic and Thermodynamic Data · Light Metal Systems. Part 2 (G.Effenberg, S. Ilyenko), Springer Materials, Berlin Heidelberg, 2005, p. 359- 409. 2. L. F. Mondolfo, Aluminium Alloys, Structure and Properties, Butter Worths, London, 1979, p. 759. 3. T. Sheppard, Extrusion of Aluminium Alloys, Kluwer Academic Publishers, Dordrecht/Boston/London, 1999, p. 253. 4. R. Naddella, D.G. Eskin, Q. Du, L. Katgerman, Macrosegregation in direct-chill casting of aluminium alloys, Progress in Materials Science, 53 (3) (2008) 421-480. https://doi.org/10.1016/j.pmatsci.2007.10.001 5. H. Tanihata, T. Sugawara, K. Matsuda, S. Ikeno, Effect of casting and homogenizing treatment conditions on the formation of Al-Fe-Si intermetallic compounds in 6063 Al-Mg-Si alloy, Journal of Materials Science, 34 (1999) 1205-1210. https://doi.org/10.1023/A:1004504805781
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|