Special issue dedicated to memory of Professor Dragana Živković - vol. 53 (3) B - 2017

X. Shuai, H. Mao, Y. Kong, Y. Du

Phase field crystal simulation of the structure evolution between the hexagonal and square phases at elevated pressures

J. Min. Metall. Sect. B-Metall. 53 (3) B (2017) 271-278. DOI:10.2298/JMMB170527027S
Full text (pdf)
Export manuscript information:
RIS Format (EndNote, Reference Manager), BibTeX

Abstract

Based on the two-mode phase field crystal (PFC) model and the principle of the common tangent, a two-dimensional PFC phase diagram is established. According to the phase diagram, the parameters for a steady growth of the hexagonal and the square phase are found. Moreover, the nucleation and growth characteristics of the square phase from hexagonal phase under different pressures are simulated by using these parameters. The movements of dislocation core under pressure at different transformation stages are revealed and compared with each other. Finally, by changing the grain orientation, the formation and disappearance of grain boundaries at different angles are simulated and analyzed.
Keywords: Two-mode phase field crystal model; Nucleation and growth characteristics; Pressure; Grain orientation
Correspondence Address:
Yong Du,
State Key Laboratory of Powder Metallurgy,
Central South University, Changsha, Hunan, PR China
This email address is being protected from spambots. You need JavaScript enabled to view it.
Y. Kong, State Key Laboratory of Powder Metallurgy,
Central South University, Changsha, Hunan, PR China
This email address is being protected from spambots. You need JavaScript enabled to view it.
Creative Commons License
This work is licensed under a
Creative Commons Attribution-
ShareAlike 4.0 International License