fig1

Figure 1. Thermodynamic calculation of ferrous MEA-pure Fe multi-material. (A) Equilibrium phase diagram in a FeCoCrNi alloy system according to the Fe fraction from 0.6 to 1.0. The horizontal line in equilibrium phase diagram indicates the annealing temperature of 1,073 K; (B) Calculation of ∆G^FCC→BCC at room (298 K) and annealing temperature (1,073 K). FCC: Face-centered cubic; BCC: body-centered cubic