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

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 an...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2017-03, Vol.181 (1)
Main Authors: Kazemi, O, Hasemann, G, Krüger, M, Halle, T
Format: Article
Language:English
Subjects:
Constituents
Eutectic alloys
Eutectic composition
Molybdenum base alloys
Phase diagrams
Phase distribution
Simulation
Solidification
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Summary: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 Mo5SiB2 phase observed in this study was combined by the Moss-Mo3Si-Mo5SiB2 eutectics. 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.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/181/1/012033