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

$t=25.0s$	$t=32.5s$

Alloy¶

Simulation conditions¶

Results¶

Concentration¶

Concentrations at $t=35s$

Carbon (C)	Manganese (Mn)

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.

$t=1s$	$t=12.5s$	$t=25s$	$t=27.5s$	$t=30s$

Files¶

• T02_01_FeCMn_D_DeltaGamma_2D_TQ
• A001_Delta_Gamma