Effects of Ce on Microstructure and Properties of TiCp+TiB2p/ZL205A Composites
TiCp+TiB2p/ZL205A composites were prepared by contact stirring method using titanium powder,boron carbide powder,aluminum powder and ZL205A as raw materials.Effects of rare earth Ce content on the microstruc-ture and mechanical properties of the composites were investigated.The results indicate that Ce addition can improve the dispersion of reinforcement particles in the matrix of TiCp+TiB2p/ZL205A composites,inhibiting the agglomera-tion of particles and refining the grain size.When the content of rare earth is 0.1％,the particle is evenly dispersed with desirable refinement effect.The tensile strength and elongation of TiCp+TiB2p/ZL205A composites after extrusion reach 426.3 MPa and 1.56％,respectively.
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