Multi-Scale Modeling: From Macro Cast Geometry to Microstructure Evolution
In modern foundry engineering, understanding how a casting behaves — from its outer geometry down to its grain-level microstructure — is the difference between a defective part and a high-performance component. Multi-scale modeling bridges that gap, and PoligonCast is at the forefront.
What Is Multi-Scale Modeling?
Multi-scale modeling is a computational approach that simultaneously simulates casting behavior across multiple physical scales — from the macroscopic geometry of the entire part down to the microscopic evolution of grain structures and phases.
Macroscopic Scale
Captures the geometry of the entire casting, simulating global heat transfer and solidification behavior.
Microscopic Scale
Models grain structure evolution, phase transformations, and microsegregation during cooling.
Local Conditions
Accounts for temperature gradients, cooling rates, and alloy composition that drive microstructural outcomes.
Simulating fluid flow to predict misruns, cold shuts, and turbulence-induced defects.
Mapping heat transfer across the entire casting to identify hot spots and shrinkage zones.
Tracking how the solid-liquid interface progresses through the macro geometry over time.
Geometry & Process Simulation
Mold Filling
Thermal Analysis
Solidification Fronts
At the microscale, simulation predicts how the alloy's internal structure forms during solidification. Key phenomena include grain nucleation, phase transformation, and porosity/segregation.
Predicting grain size and morphology based on local cooling rates.
Tracking the formation of secondary phases, precipitates, and intermetallics.
Identifying micro-shrinkage and solute redistribution that compromise mechanical properties.
Microstructure Evolution
Grain Nucleation & Growth
Phase Transformation
Porosity & Segregation
Run macro-scale simulations.
Predict grain and phases.
Define overall part shape.
Capture temperature histories.
The power of multi-scale modeling lies in the coupling mechanism: macro-level thermal and flow data feeds directly into micro-level models. Local temperature histories extracted from the macro simulation drive grain growth algorithms, phase field models, or CALPHAD-based thermodynamic calculations — producing microstructure predictions with engineering-grade accuracy.
How It Works
Thermal & Flow
Microstructure
Macro Geometry
Local Extraction
Multi-scale modeling is no longer a research luxury — it is an engineering necessity for competitive foundries. By connecting macro casting geometry to microstructure evolution, PoligonCast empowers manufacturers to design better parts, reduce trial iterations, and deliver consistent quality.
Predict and eliminate porosity, segregation, and cracking before the first pour.
Compress tooling and process development cycles with virtual validation.
Engineer microstructures that meet exact mechanical and performance specifications.
Precision Across Every Scale
Fewer Defects
Faster Development
Superior Properties
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