Fully densed PM TC11 alloy was fabricated by plasma rotation electrode process (PREP) and subsequent
hot isostatic pressing (HIP), its microstructure was observed and the evolution mechanism is discussed by theoretical
analysis and FEM calculation. The results reveal that, the microstructure of PM TC11 is mainly composed of
platelet α and fine transformed β phase. Meanwhile, some equiaxed α are observed at the initial boundaries of powders.
These unique microstructures are caused by the PREP and HIP.