Thermal processing dissolves ferrite into sigma phase or austenite, lowering the final room-temperature FN.
Predicting the amount of ferrite in a weld is critical for ensuring material performance: Preventing Hot Cracking wrc-1992 diagram calculator
Anton Schaeffler created the first widely-used constitutional diagram. While groundbreaking for its time, it didn't account for the potent effect of nitrogen in stabilizing austenite. Thermal processing dissolves ferrite into sigma phase or
Title: WRC-1992 Diagram Calculator — Fast Diaphragm Wind Loading wrc-1992 diagram calculator