DELTA_FERRITE_AUSTENITE_TRANSITION

This command is for the SCHEIL module.

The DELTA_FERRITE_AUSTENITE_TRANSITION command enables or disables BCC to FCC transition.

This feature should only be used for such steels for which it is reasonable to assume infinitely fast diffusion (equilibrium conditions) when delta ferrite is present. When the Allow delta ferrite to austenite transition in steel checkbox is selected in Graphical Mode or the DELTA_FERRITE_AUSTENITE_TRANSITION command used in Console Mode, this essentially assumes that diffusion can be considered (infinitely) fast when delta ferrite is present as a solid phase, i.e assumes an equilibrium condition. After delta ferrite is no longer stable, the usual Scheil assumptions for the selected calculation type are in effect. This setting is therefore not suitable for steels where you DO NOT have a complete BCC to FCC transition during solidification. This setting is also NOT available in combination with solute trapping.

Syntax	DELTA_FERRITE_AUSTENITE_TRANSITION
Prompt	Allow delta-ferrite -> austenite ? /N/: The default is `N`. Enter `Y` to enable BCC to FCC transition. This feature should only be used for such steels for which it is reasonable to assume infinitely fast diffusion (equilibrium conditions) when delta ferrite is present. See the above for details.

Syntax

DELTA_FERRITE_AUSTENITE_TRANSITION

Prompt

Allow delta-ferrite -> austenite ? /N/:

The default is N. Enter Y to enable BCC to FCC transition.

This feature should only be used for such steels for which it is reasonable to assume infinitely fast diffusion (equilibrium conditions) when delta ferrite is present. See the above for details.