A SIMULATION TOOL FOR FULL FIELD DESCRIPTION OF MICROSTRUCTURAL EVOLUTION IN PRACTICAL MULTI COMPONENT LIGHTWEIGHT ALLOYS
Abstract
The phase field method (PFM) has achieved increasing prominence in recent years for full field description of microstructure obtained under various heat treatment and service conditions. However, the PFM has not been utilized directly by designers for engineering applications since it has difficulties in being quantitative when applied to multi component alloys. Although this is partly due to the fact that PFM is computationally intensive by itself, a lack of seamless and efficient integration between PFM and the needed thermodynamic input is the actual show stopper. Alloy specific and quantitative phase field simulations require thermodynamic and phase equilibrium information as input for millions of different chemical compositions. Direct calculations of the required thermodynamic quantities for each composition are prohibitively expensive computationally, especially for multi component and multi phase alloys. This bottleneck has restricted PFM from releasing its full potential for the study of phase transformations and microstructural evolution of practical alloy systems under variety of processing conditions. The purpose of this work is to develop an integrated simulation tool which allows direct coupling of PFM with thermodynamic calculation engine through an innovative data management algorithm. This tool will combine the strengths of both CALPHAD method and PFM and will enable simulating the evolution of spatially varying microstructures of multi component systems. This simulation tool will have significant impacts on the design, development and optimization of multi component and multi phase alloys for engineering applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 14, 2022
- Source ID
- FA95501910192
Entities
People
- Shuanglin Chen
Organizations
- Air Force Office of Scientific Research
- CompuTherm (United States)
- United States Air Force