Fig. 1: Yield strength trends in equiatomic alloys. | npj Computational Materials

Fig. 1: Yield strength trends in equiatomic alloys.

From: Computational discovery of ultra-strong, stable, and lightweight refractory multi-principal element alloys. Part I: design principles and rapid down-selection

Fig. 1

Predicted trends in a, c, e YS and b, d, f SYS versus the number of elements for all equiatomic alloys from Al-Cr-Fe-Hf-Mo-Nb-Ta-Ti-V-W-Zr at a, b 1300 K, c, d 1550 K, and e, f 1800 K. The YS, SYS, and thermodynamics were evaluated at the stated temperature. Smaller/lighter colored points show every alloy when assumed to be a BCC single-phase solid solution, no matter its equilibrium phases (single-phase BCC, dual-phase BCC, non-BCC, BCC + non-BCC). The region spanned by equilibrium single- and dual-phase BCC solid solutions is highlighted in gray. The larger/darker points (in gray shaded areas) correspond only to alloys predicted to be single-phase (colored points) or dual-phase (gray points) BCC solid solutions. Cyan triangles are reference experimental data for Ta90W10 (ref. 37), MoNbTaW (ref. 20), MoNbTaVW (ref. 20), HfMoNbTiZr (panel (b) only) (ref. 38), and MoNbTaTiVW (ref. 4). Circular points are averages over each of the above data sets (short dashed lines are visual guides), and long dashed lines trace the envelopes of minimum and maximum strength. Listed alloys are those with the highest strength at each number of elements, N (gray text = assumed single-phase BCC, black text = BCC solid solution).

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