Dual-scale phase-field simulation of Mg-Al alloy solidification

Autor:	Daniel Höche, Ingo Steinbach, Alexander Monas, Marvin Tegeler, O. Shchyglo
Rok vydání:	2015
Předmět:	Materials science Scale (ratio) Alloy Metallurgy Nucleation Thermodynamics Field simulation engineering.material Microstructure Phase (matter) engineering Cooling curve ddc:620.11 Eutectic system
Zdroj:	Monas, A.; Shchyglo, O.; Hoeche, D.; Tegeler, M.; Steinbach, I.: Dual-scale phase-field simulation of Mg-Al alloy solidification. In: IOP Conference Series: Materials Science and Engineering. Vol. 84 (2015) 012069. (DOI: 10.1088/1757-899X/84/1/012069)
ISSN:	1757-899X 1757-8981
DOI:	10.1088/1757-899x/84/1/012069
Popis:	Phase-field simulations of the nucleation and growth of primary α-Mg phase as well as secondary, β-phase of a Mg-Al alloy are presented. The nucleation model for α- and β-Mg phases is based on the "free growth model" by Greer et al.. After the α-Mg phase solidification we study a divorced eutectic growth of α- and β-Mg phases in a zoomed in melt channel between α-phase dendrites. The simulated cooling curves and final microstructures of α-grains are compared with experiments. In order to further enhance the resolution of the interdendritic region a high-performance computing approach has been used allowing significant simulation speed gain when using supercomputing facilities.
Databáze:	OpenAIRE
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