Phase-field simulation of the microstructure evolution in the eutectic NiAl-34Cr system

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• 作者：Michael Kellner^a ; ^{michael.kellner@kit.edu} ; Ioannis Sprenger^c ; ^{ioannis.sprenger@kit.edu} ; Philipp Steinmetz^a ; ^{philipp.steinmetz@kit.edu} ; Johannes Hö ; tzer^a ; ^b ; ^{johannes.hoetzer@kit.edu} ; Britta Nestler^a ; ^b ; ^{britta.nestler@kit.edu} ; Martin Heilmaier^c ; ^{martin.heilmaier@kit.de}
• 关键词：Phase-field simulation ; Directional solidification ; NiAl-34Cr ; Jackson-Hunt analysis
• 刊名：Computational Materials Science
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：128
• 期：Complete
• 页码：379-387
• 全文大小：2516 K
• 卷排序：128

文摘

Modeling of the eutectic system NiAl-34Cr with phase-field simulations based on the Grand potential approach. Two- as well as three-dimensional large-scale phase-field simulations for three different velocities. Comparison of simulation results with analytical theory of Jackson and Hunt in 2D and 3D. The simulations of all considered velocities match well with the analytic approach. Large-scale simulations are found to be in good qualitative and quantitative accordance with experimental results.