Effect of Ce on Cast and Extruded Microstructure of ZK20 Alloy

摘要

In this paper, Effect of different contents of Ce on ZK20 magnesium alloy by conventional metallographic, X-ray, SEM, XRD, analysis of Ce element exists in the form of ZK20 magnesium alloy and microstructure of action the results show that: in the experimental range (0% ～ 0.68%Ce (mass fraction)), with the addition of Ce, appearing in the cerium-containing alloy phase τ growing phase, not to form a continuous network and net change, after the alloy by hot extrusion, the alloy of cerium can improve the degree of recrystallization, the grain size increases with the amount of cerium increasingly smaller.