Semi-solid thixo-forming of in-situ reactive spray formed TiCp/7075 aluminum matrix composites was carried out. Thixoformability of in-situ reactive spray formed TiCp/7075 aluminum matrix composites

and microstructure and mechanical properties of the thixoformed products were investigated. It is found that the composites exhibit desirable semi-solid thixoformability

which can be performed semi-solid thixoforming with pressure at 20

2

5 MPa. Uniformly distributed equiaxed grain in the microstructure with average grain size in 30

4

0 μm can be still observed with semi-solid thixo-forming at 625 ℃. The hardness of the thixoformed composites reaches 82

8

5HRB after T6 heat treatment.