Integration of Processing and Microstructure Models for Non-Equilibrium Solidification in Additive Manufacturing
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Modeling Non-Equilibrium Solidification of Al-Cu Alloys
3.2. Predicting Thermal History during the Laser Powder Bed Fusion Process
3.3. Solidification of SS316L during Additive Manufacturing
4. Discussion
5. Conclusions
- The TC-Python application programing interface is used to couple a thermal model for the LPBF process with a DICTRA solidification model to simulate the process-microstructure relationship between processing variables and non-equilibrium solidification in additively manufactured materials. Automation of the CALPHAD-based ICME framework with the TC-Python application programing interface enables DICTRA calculations to be used as a high-throughput computational materials design tool. Improvement of numerical algorithms within DICTRA is necessary to enhance the computational efficiency of diffusion simulations.
- A linear relationship between SCS and energy density in SS316L manufactured by LPBF is predicted using a CALPHAD-based ICME framework. A location-dependent relationship with SCS in SS316L is not found.
- The ICME modeling framework developed in this work demonstrates the importance of integrating mechanical and materials models for design simulations in additive manufacturing. The developed modeling framework can be used to guide alloy design and process optimization for additive manufacturing. This framework can also be applied to other processing techniques provided a suitable thermal model is available. Since the present ICME model is based on thermodynamics and diffusion model-predictions, sustainable improvement of the CALPAHD database fidelity is critical to sustaining model accuracy.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Acknowledgments
Conflicts of Interest
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Sargent, N.; Jones, M.; Otis, R.; Shapiro, A.A.; Delplanque, J.-P.; Xiong, W. Integration of Processing and Microstructure Models for Non-Equilibrium Solidification in Additive Manufacturing. Metals 2021, 11, 570. https://doi.org/10.3390/met11040570
Sargent N, Jones M, Otis R, Shapiro AA, Delplanque J-P, Xiong W. Integration of Processing and Microstructure Models for Non-Equilibrium Solidification in Additive Manufacturing. Metals. 2021; 11(4):570. https://doi.org/10.3390/met11040570
Chicago/Turabian StyleSargent, Noah, Mason Jones, Richard Otis, Andrew A. Shapiro, Jean-Pierre Delplanque, and Wei Xiong. 2021. "Integration of Processing and Microstructure Models for Non-Equilibrium Solidification in Additive Manufacturing" Metals 11, no. 4: 570. https://doi.org/10.3390/met11040570