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Numerical Modelling of Phase Diagrams of Copper Alloys for Optimization of Semi-Solid Forming

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EN
Abstrakty
EN
Processing of metal alloys in semi-solid state is a way of producing many near net-shape parts and nowadays is commercially successful. Particular behaviour of alloys in the partially liquid state, having non-dendritic microstructure, is a base for thixoforming processing. Processing materials in the semi-solid state concerns alloys with relatively wide solidification range. Thermodynamic modelling can be used as a one of a potential tools that allow to identify alloys with proper temperature range. It means that the key feature of alloys suitable for thixoforming is a widely enough melting range, allowing for precise control of material temperature. The data gathered from thermodynamics calculations can also pay off in the industrial thixoforming processes design. The goal of this paper is to identify copper alloys which can be successfully shaped in the semi-solid state. Apart to thermodynamic calculations, the observations on high temperature microscope was carried out. During experiments the solidus, liquidus and also deformation temperatures can be determined. An experimental work allows confirming results obtained within the confines of thermodynamic calculations and firstly to determine the deformation temperatures which are the optimal for shaping processes. The basic achievement of this work is an identification of copper alloy groups possible for shaping in the semi-solid state. At the first part of the paper, the basic criteria of suitable alloys were described. Next, both the solid fraction curves for copper alloys with different alloying elements using ProCAST software and the phase diagrams were determined to identify the solidification temperature ranges of these alloys. In the second part of these paper, the identification of the deformation temperatures was carried out with use of high temperature microscope observation.
Twórcy
  • AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. Mickiewicza 30, 30-059 Krakow, Poland
  • AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. Mickiewicza 30, 30-059 Krakow, Poland
  • AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, al. Mickiewicza 30, 30-059 Krakow, Poland
Bibliografia
  • [1] N.H. Husain, A.H. Ahmad, M.M. Rashidi, An overview of thixoforming process, 4th International Conference on Mechanical Engineering Research (ICMER2017) 257 (2017).
  • [2] K.P. Sołek, R.M. Kuziak, M. Karbowniczek, The application of thermodynamic calculations for the semi-solid processing design, Archives of Metallurgy and Materials 52 (1), 25-32 (2007).
  • [3] K. Solek, M. Korolczuk-Hejnak, W. Slezak, Viscosity measurements for modelling of continuous steel casting, Archives of Metallurgy and Materials 57 (1), 333-338 (2012).
  • [4] J. Dutkiewicz, L. Rogal, K. Solek, Z. Mitura, P. Kapranos, Thixoforming of spray formed M2 tool steel, International Journal of Material Forming 3, 755-758 (April 2010).
  • [5] A.M. Camacho, H.V. Atkinson, P. Kapranos, B.B. Argent, Thermodynamic prediction of wrought alloy compositions to semi-solid processing, Acta Materialia 51, 2319-2330 (2003).
  • [6] D. Liu, H.V. Atkinson, H. Jones, MTDATA thermodynamic prediction of suitability of alloys for thixoforming, Proc. 8th Int. Conf. on Semi-Solid Processing of Alloys and Composites, Limassol, Cyprus (2004) CD-ROM.
  • [7] https://sourceforge.net/software/product/ProCAST/
  • [8] Procast2021.0 - User Guide (visual-Cast ProCAST-Rev B)
  • [9] https://www.factsage.com/fs_general.php - General information
  • [10] C.W. Bale, E. Belisle, P. Chartrand, S. A. Decterov, G. Eriksson, A. Gheribi, K. Hack, I. H. Jung, J. Melancon, A. D. Pelton, S. Petersen, C. Robelin, Recent developments in factsage thermochemical Software and Databases. 2014. Extraction and Processing Division Symposium on Pyrometallurgy in Honor of David G.C. Robertson, Held at the 143rd TMS Annual Meeting & Exhibition, San Diego, CA, FEB16-20, 2014.
  • [11] C.W. Bale, E. Belisle, P. Chartrand, S.A. Decterov, G. Eriksson, K. Hack, I.-H. Jung, Y.-B. Kang, J. Melancon A.D. Pelton, C. Robelin, S. Petersen, FactSage thermochemical software and databases - recent developments, Calphad-Computer coupling of Phase Diagrams and Thermochemistry 33 (2), 295-311 (Jun 2009).
  • [12] Axel Hesse, Image Analysis for Heating Microscopes, Optical Dilatometer, Manual, Hesse Instruments, 2002.
  • [13] Anne Marie Helmenstine, Ph.D. “Composition and Properties of Bronze.” Thought Co, Aug. 25, 2020, thoughtco.com/bronze-composition-and-properties-603730.
Uwagi
This research was financed by AGH University of Science and Technology, project no. 16.16.110.663.
Typ dokumentu
Bibliografia
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bwmeta1.element.baztech-87c98237-133e-449b-aadb-33f35c23c959
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