fig2

Tuning hydride stability in TiVZrNb high-entropy hydrogen storage alloys via alloy-hydrogen electronegativity difference

Figure 2. Phase diagrams for HEA-1 to HEA-8 alloys calculated using Thermo-Calc software: (A) HEA-1, (B) HEA-2, (C) HEA-3, (D) HEA-4, (E) HEA-5, (F) HEA-6, (G) HEA-7, and (H) HEA-8. BCC_B2#1 and BCC_B2#2 denote two distinct composition sets of the BCC/B2 thermodynamic phase model generated by Thermo-Calc; HCP_A3 denotes the hexagonal close-packed solid-solution phase; and LIQUID denotes the liquid phase. BCC: Body-centered cubic; HCP: hexagonal close-packed; HEA: high-entropy alloy.

Microstructures
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