Prediction of phase distribution pattern in phase field simulations on Mo5SiB2-primary areas in near eutectic Mo-Si-B alloy

19th Chemnitz Seminar on Materials Engineering – 19. Werkstofftechnisches Kolloquium

Kazemi, O.^1 ; Hasemann, G.^1 ; Krüger, M.^1 ; Halle, T.^1

Institut für Werkstoff- und Fügetechnik, Otto-von-Guericke-Universität Magdeburg, P.O. Box 4120, Magdeburg

D-39016, Germany^1

关键词: Concentration change;    Micro-structural;    Microstructural investigation;    Mo-Si-B alloys;    Phase distribution;    Phase evolutions;    Phase field methods;    Thermodynamic data;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/181/1/012033/pdf
DOI  :  10.1088/1757-899X/181/1/012033

来源: IOP

【 摘 要 】

A Mo-10.9Si-20.3B (if not stated otherwise all compositions are given in at.%) alloy was modeled using the phase field method with linearized phase diagrams and thermodynamic data. The simulation results showed that there are two specific microstructural constituents. According to the simulations and experimental microstructural investigations the primary Mo5SiB2phase observed in this study was combined by the Moss-Mo3Si-Mo5SiB2eutectics. The overall composition of the both primary and eutectic area was probed and the phase evolution along with the concentration change of the core areas were explored and visualized in the solidification domain. To verify the accuracy of the simulation results, they were comprised with the experimental achievements. In terms of the fraction of phases, the portion of the primary phase and the eutectic constituent and the phase distribution pattern our results were in good agreement with the experimental observations.