Table 1 Conditions of experimental and microstructure characteristics of equiatomic AlCoFeNiTi, AlCoFeNiTiMo HEA alloy samples reported in the literature.
Sample | Equipment | Ball to powder ratio | PCA | Milling time and speed | Structure of powder | Structure of bulk sample | Refs. |
|---|---|---|---|---|---|---|---|
AlCoFeNiTi | Planetary ball mill | 10:1 | 45 h dry milling + 4 h ethanol | 45 h at 300 rpm | main BCC+ a few FCC | Spark plasma sintering a primary FCC + a BCC + a trace amount of Al3Ti | |
AlCoFeNiTi | Fritsch P-5 | 10:1 | Toluene | 300 rpm | BCC | SPS: BCC + TiC | |
AlCoFeNiTi | Fritsch P-5 | 10:1 | Toluene | 8 h 300 rpm | BCC | SPS: two BCC (2.95 Å) + BCC(B2 2.916 Å) + TiC | |
AlCoFeNiTi | SPEX 8000 M | 10:1 | Methanol | 15 h | BCC | conventional sintering: BCC (2.87 Å ) + FCC1(3.60 Å) + FCC2(4.27 Å) | |
AlCoFeNiTi | 25:1 | Toluene | 30 h 400 rpm | main FCC (3.571 Å) + a few BCC (2.858 Å) + Ni4Ti3 | - | ||
AlCoFeNiTi | Arc furnace + water-cooled copper mould | - | ingot: L21(Fe2AlTi) + BCC1(Fe, Co, Ni)+ BCC2(Fe, Al Ti) plate: L21 + BCC2 | ||||
AlCoFeNiTiMo | SPEX 8000 M | 10:1 | methanol | 15 h | BCC1 Mo-type + BCC2 Fe-type + FCC | FCC1(3.60 Å) + FCC2 + Co7Mo6 | |
AlCoFeNiTiMo | SPEX 8000 M | 5:1 | methanol | 20 h | BCC1 Mo-type BCC2 Fe-type | conventional sintering: FCC + BCC Fe-type, +µCoMo-type + α CoMo-type arc melted ingot: BCC Mo-type, Ti2O | |
