Rapid precipitation in an Al_0.5CrFeCoNiCu high entropy alloy

Figures & data

Figure 1. BSEI micrographs (a 50 μm, b 10 μm) of Al_0.5CrFeCoNiCu in the as cast state showing a dendritic microstructure

Figure 2. DSC thermogram from as cast Al_0.5CrFeCoNiCu during heating (red) and cooling (blue) at 10°C min⁻¹

Figure 3. BSEI micrographs (a 50 μm; b 10 μm) of Al_0.5CrFeCoNiCu cooled at 10°C min⁻¹ from the liquid state

Figure 4. EDX elemental distribution maps from Al_0.5CrFeCoNiCu cooled at 10°C min⁻¹ showing Cr, Fe and Co rich precipitates within the interdendritic constituent

Figure 5. a BSEI of the microstructure of Al_0.5CrFeCoNiCu cooled at 10°C min⁻¹ showing precipitation in both the dendritic and interdendritic constituents and b corresponding Cu EDX map indicating that the fine acicular precipitates within the dendrites are Cu rich

Figure 6. DSC thermograms illustrating the influence of cooling rate on Al_0.5CrFeCoNiCu

Figure 7. BSEI micrographs (a 50 μm, b 10 μm) of Al_0.5CrFeCoNiCu cooled at 50°C min⁻¹ from the liquid state

Figure 8. EDX elemental distribution maps from material cooled at 50°C min⁻¹ showing Cr, Fe and Co rich precipitates within the interdendritic constituent