Microstructures of P/M Superalloy FGH95 in the HIP' ed and HIP'ed Plus Heat Treated Condition

Microstructures of P/M superalloy FGH95 in the HIP'ed and HIP'ed plus heat treated condition are investigated with optical microscopy, TEM, and X-ray diffraction. The results show that r' MC,M₂₃C₆ phases are present in samples after both HIP'ed and HIP'ed plus heat treated condition.Al-rich and Zr-rich oxides are found at the primary particle boundaries.