Microstructural features and excellent compression properties of a novel Al0.7CoCrFeNiTi0.3 high entropy alloy

Effects of Cr/Fe Ratio on Structural Evolution and Tensile Properties of the Fe75.7−xCrxNi15.1Al4.6Ti4.6 High‐Entropy Alloys

“…To reveal the effect of VEC and δ on the phase evolution, the parameters values are shown in Figure . The VEC and δ values of the current HEAs and the relative HEAs [ 12,14,16,19,23,32–45 ] are calculated, as listed in Table 1 and S3, Supporting Information. The VEC and δ can be reasonably predicted the phase formation and stability in aforementioned HEAs: at VEC ≥ 7.7 and δ ≤ 4.6%, a single FCC phase exists, as shown in the blue symbols (BS) region; at 7.3 ≤ VEC ≤ 8.1 and 3.6 ≤ δ ≤ 6.0%, multiple solid‐solution (MSS) phases including FCC + BCC, FCC + BCC + B2, and FCC + BCC + L2 1 exist, as shown in the violate symbols (VS) region; at VEC ≤ 7.5 and 3.3 ≤ δ ≤ 7.1%, BCC‐related phases including single BCC and dual phase of BCC + B2 or BCC + L2 1 exist, as shown in the red symbols (RS) region.…”