Thixoforming of SiC ceramic matrix composites in pseudo-semi-solid state
(School of Materials Science and Engineering, Harbin Institute of Technology,
Harbin 150001, China)
Harbin 150001, China)
Abstract: A new forming process, ceramic matrix composites thixoforming in pseudo-semi-solid state, was proposed based on powder metallurgy technology combined with the semi-solid metal forming process. The satellite angle-frames were prepared by this technology with Alp and SiCp materials mixed with different volume fractions. It is proved that it is feasible for the forming of the ceramic matrix composites by this technology through metallographic analyses and tensile tests. The results also show that the microstructures of samples are homogeneous and they have high hardness and certain plasticity.
Key words: powder metallurgy; thixoforming in pseudo-semi-solid state; high-melting alloy