Calibration of a concentration-driven nucleation mechanism for phase-field simulations of eutectic and off-eutectic compositions in AlCu-5Ag. (September 2020)

• Record Type: Journal Article
• Authors: Hinrichs, Frauke; Kellner, Michael; Hötzer, Johannes; Nestler, Britta
• Is Part Of: Scripta materialia. Number 186(2020)
• Page Start: 89
• Page End: 94
• Publication Date: 2020-09
• Subjects: Phase-field simulation -- Nucleation -- Directional solidification -- Jackson-Hunt analysis -- Off-eutectic compositions; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.05.018
• Languages: English
• ISSNs: 1359-6462

Abstract

Graphical abstract: Abstract: The present work is an extension of the studies conducted by Kellner et al. [M. Kellner et al., Acta Materialia, vol. 182, pp 267–277, 2020.], to show the transferability of their concentration-driven nucleation mechanism to other systems. The implementation of this method improves the adjustment process of directionally solidifying eutectic structures in two-dimensional phase-field simulations. To quantitatively evaluate the nucleation mechanism, the velocity-spacing relationships of different eutectic and off-eutectic melt compositions are investigated for AlCu-5Ag . A good agreement between simulations with and without the nucleation mechanism is found for all studied compositions.