Warianty tytułu
Języki publikacji
Abstrakty
Purpose: In the technical 6xxx Al alloys besides the intentional additions Mg i Si, transition metals and impurities (Fe and Mn) are always present. Even not large amount of these impurities causes the formation a new phase components. The exact composition of the alloy and casting condition will directly influence the selection and volume fraction of intermetallic phases. During casting of 6xxx alloys, a wide variety of Fe-containing intermetallics phases Al-Fe, Al-Fe-Si and Al-Fe-Mn-Si are formed among the aluminium dendrites. The aim of this work was to examine the composition and morphology of complex microstructure of the intermetallics in 6082 aluminium alloy. Design/methodology/approach: Light microscopy (LM), electron microscopy techniques (SEM and TEM) in combination with X-ray analysis (SEM/EDS), and X-ray diffraction (XRD) were used. Findings: The examinations of the as-cast alloy after slow solidification at a cooling rate 2°C/min reveal that the microstructure consisted a wide range of intermetallics phases, namely: β -Al5FeSi, α -Al15(FeMn)3Si, Al9Mn3Si, α -Al12Fe3Si, Mg2Si. Research limitations/implications: To facilitate confirmation of the achieved results it is recommended to execute supplementary analysis of the aluminium alloys, 6xxx series in particular. Practical implications: Since the, what involves changes of alloy properties, From a practical position it is important to understand formation conditions of the intermetallics in order to control final components of the alloy microstructure. The importance of this is due to the fact that morphology, crystallography and chemical composition of the intermetallics strongly affect the properties of the alloy. Originality/value: This work has provided essential data about almost all possible intermetallic phases precipitating in 6000 series aluminium alloys.
Rocznik
Tom
Strony
69-76
Opis fizyczny
Bibliogr. 20 poz., il., wykr.
Twórcy
autor
autor
autor
- Department of Materials Science, Rzeszow University of Technology, ul. W. Pola 2, 35-959 Rzeszow, Poland, mrowka@prz.edu.pl
Bibliografia
- [1] C. D. Marioara, S. J. Andersen, J. Jansen, H. W. Zandbergen, The influence of temperature and storage time at RT on nucleation of the β phase in a 6082 Al-Mg-Si alloy, Acta Materialia 51 (2003) 789-796.
- [2] N. C. W. Kuijpers, W. H. Kool, P. T. G. Koenis, K. E. Nilsen, I. Todd, S. van der Zwaag, Assessment of diffrent techniques for quantification of α-Al (FeMn) Si and β-AlFeSi intermetallics in AA 6xxx alloys, Materials Characterization 49 (2003) 409-420.
- [3] J. E. Hatch Ed., Aluminium. Properties and Physical Metallurgy. ASM Metals Park, Ohio 1984.
- [4] S. Zając, B. Bengtsson, Ch. Jönsson, Influence of cooling after homogenization and reheating to extrusion on extrudability and final properties of AA 6063 and AA 6082 alloys, Materials Science Forum 396-402 (2002) 399-404.
- [5] G. Mrówka-Nowotnik, J. Sieniawski, Influence of heat treatment on the micrustructure and mechanical properties of 6005 and 6082 aluminium alloys, Journal of Materials Processing Technology 162-163 (2005) 367-372.
- [6] A. K. Gupta, P. H. Marois, D. J. Lloyd, Review of the techniques for the extraction of second-phase particles from aluminium alloys, Materials Characterization 37 (1996) 61-80.
- [7] R. A. Jeniski Jr, Effect of Cr addition the microstructure and mechanical behavior of 6061-T6 continuously cast and rolled redraw rod, Materials Science and Engineering A237 (1997) 52-64.
- [8] M. Warmuzek, G. Mrówka, J. Sieniawski, Influence of the heat treatment on the precipitation of the intermetallic phases in commercial AlMn1FeSi alloy, Journal of Materials Processing Technology 157-158 (2004) 624-632.
- [9] Y. L. Liu, S. B. Kang, H. W. Kim, The complex microstructures in as-cast Al-Mg-Si alloy, Materials Letters 41 (1999) 267-272.
- [10] L. F. Mondolfo, Aluminium Alloys: Structure and Properties. Butterworths, London-Boston, 1976.
- [11] M. Warmuzek, K. Rabczak, J. Sieniawski, The course of the peritectic transformation in the Al-rich Al-Fe-Mn-Si alloys, Journal of Materials Processing Technology 162-163 (2005) 422-428.
- [12] M. Warmuzek, J. Sieniawski, K. Wicher, G. Mrówka-Nowotnik, The study of distribution of the transition metals and Si during primary precipitation of the intermetallic phases in Al-Mn-Si alloys, Journal of Materials Processing Technology 175 (2006) 421-426.
- [13] S. R. Claves, D. L. Elias, W. Z. Misiolek, Analysis of the intermatallic phase transformation occurring during homogenization of 6xxx aluminum alloys. Materials Science Forum 396-402 (2002) 667-674.
- [14] M. Warmuzek et al., Influence of heat treatment on the precipitation of the intermetallic phases in AlMn1FeSi, Proceedings of the 11th International Conference Achievements in Mechanical & Materials Engineering, AMME'2002, Gliwice-Zakopane, 2002, 601-604.
- [15] L. A. Dobrzański, W. Borek, R. Maniara, Influence of the crystallization condition on Al-Si-Cu casting alloys structure, Journal of Achievements in Materials and Manufacturing Engineering 18 (2006) 211-214.
- [16] G. Mrówka-Nowotnik, J. Sieniawski, M. Wierzbińska, Analysis of intermetallic particles in AlSi1MgMn aluminium alloy, Journal of Materials Processing Technology 20 (2007) 155-158.
- [17] Y. Birol, The effect of processing and Mn content on the T5 and T6 properties of AA6082 profiles, Journal of Materials Processing Technology 173 (2006) 84-91.
- [18] C. D. Marioara, S. J. Andersen, J. Jansen, The influence of temperature and storage time at RT on nucleation of the beta, „Phase in a 6082 Al-Mg-Si Alloy”, Acta Materialia 51 (2003) 789-796.
- [19] M. M. Haquea, A. F. Ismailb, Effect of superheating temperatures on microstructure and properties of strontium modified aluminium-silicon eutectic alloy, Proceedings of the 13th Scientific International Conference Achievements in Mechanical and Materials Engineering, AMME'2005, Gliwice-Wisła, 2005, 267-270.
- [20] G. Mrówka-Nowotnik, J. Sieniawski, M. Wierzbińska, Analysis of intermetallic particles in AlSi1MgMn aluminium alloy, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 155-158.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BWAN-0001-0009