Fabrication of biodegradable magnesium matrix composite with ultrafine grains and high strength by adding TiC nanoparticles to Mg-1.12Ca-0.84Zn-0.23Mn (at.%) alloy

摘要

Mg-1.12Ca-0.84Zn-0.23Mn (at.%) alloy was reinforced by TiC nanoparticles. After extrusion ultra-fine grains of similar to 0.4 mu m were caused by Zener pinning effect of nano-sized particles including fine precipitated MgZn2 phases, alpha-Mn particles and TiC nanoparticles. Yield strength of 423.6 MPa along with ultimate tensile strength of 436.8 MPa could meet biomedical application.