Delta-Gamma¶
Delta Gamma is a 2-D simulation of the directional solidification of a ternary steel model alloy containing carbon and manganese. The simulation shows the solidification of a \delta phase dendrite and the subsequent peritectic reaction to the \gamma phase.
The simulation is performed as concentration-coupled and makes use of the 1-D far field approximation and the moving frame option. It is coupled to Thermo-Calc™.
Dendritic solidification before and after peritectic reaction
t=25.0s | t=32.5s |
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Alloy¶
Example | T001_Delta_Gamma |
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Alloy system | Fe-C-Mn (Steel.Ges5) |
Composition |
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Transition |
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Simulation conditions¶
Example | T001_Delta_Gamma |
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Dimension | 2-D |
Grid size | 145x1500 cells |
Grid spacing | 1 micron |
Interface thickness | 4 cells |
Boundary conditions |
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Solid phases | gamma, delta |
Results¶
Concentration¶
Concentrations at t=35s
Carbon (C) | Manganese (Mn) |
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Solidification¶
Solidification sequence
-1: interface, 0: liquid, 1: \delta phase, 2: \gamma phase
- t=1s
A preset \delta ferrite grain grows dendritically in a temperature gradient (bottom cooling).- t=27.5s
A \gamma austenite grain nucleates and the peritectic reaction/transformation proceeds.
t=1s | t=12.5s | t=25s | t=27.5s | t=30s |
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