The as-cast material, Fig. 1a, exhibited a dendritic microstructure
with Fe, Co, Cr rich dendrites and Cu, Al rich interdendritic
material. EDX determined phase compositions are given in Table 1.
Casting-induced porosity was also observed in the interdendritic
regions. X-ray diffraction from this material, Fig. 1b, revealed peaks
corresponding to an fcc structure, consistent with previous reports
[2]. In addition, several low intensity peaks were also present in the
spectra, as identified by diamond markers, indicating that a small
volume fraction of at least one other structure existed within the
material in this condition. However, the area of these smaller peaks
was inconsistent with the volume fraction of interdendritic material
observed in Fig. 1a.
The as-cast material, Fig. 1a, exhibited a dendritic microstructure
with Fe, Co, Cr rich dendrites and Cu, Al rich interdendritic
material. EDX determined phase compositions are given in Table 1.
Casting-induced porosity was also observed in the interdendritic
regions. X-ray diffraction from this material, Fig. 1b, revealed peaks
corresponding to an fcc structure, consistent with previous reports
[2]. In addition, several low intensity peaks were also present in the
spectra, as identified by diamond markers, indicating that a small
volume fraction of at least one other structure existed within the
material in this condition. However, the area of these smaller peaks
was inconsistent with the volume fraction of interdendritic material
observed in Fig. 1a.
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