An efficient microstructure simulation framework by integrating phase-field model, general coupling schema and parallelism: Demo in Ni-based superalloys
Xiaoke Wu , Ting Cheng , Jing Zhong , Shenglan Yang , Sa Ma , Na Ta , Lijun Zhang
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引用次数: 0
Abstract
In this work, a framework for efficient phase-field simulation of microstructure evolution is developed and demonstrated in Ni-based superalloys. Firstly, a universal schema for phase-field simulation coupling with various CALPHAD-type data/databases is postulated. Identifiers for illustrating fruitful prerequisite properties/parameters for phase-field modeling are proposed. An open exchange coupling file format is also put forward according to the data reconstruction strategy based on hash algorithm and interpolation. After that, the presently developed coupling schema is combined with the phase-field model with finite interface dissipation as well as the parallelism technique for elaborate demonstration. Various benchmark tests for the presently proposed coupling schema are carried out for validation. Finally, efficient phase-field simulation of the long-time aging process of Ni-Al alloy and the medium-scale directional solidification process of the Ni-Al-Ta ternary alloy within various preparation process parameters were performed for further validation. It is anticipated that the presently developed framework is of general validity for industrial materials in the spirit of integrated computational materials engineering.
期刊介绍:
The design of industrial processes requires reliable thermodynamic data. CALPHAD (Computer Coupling of Phase Diagrams and Thermochemistry) aims to promote computational thermodynamics through development of models to represent thermodynamic properties for various phases which permit prediction of properties of multicomponent systems from those of binary and ternary subsystems, critical assessment of data and their incorporation into self-consistent databases, development of software to optimize and derive thermodynamic parameters and the development and use of databanks for calculations to improve understanding of various industrial and technological processes. This work is disseminated through the CALPHAD journal and its annual conference.