Microstructures and mechanical properties of Mg-Ce-Zn-Zr wrought alloy^①

来源期刊：中南大学学报(英文版)2004年第4期

论文作者：武文花 夏长清

文章页码：367 - 370

Key words：wrought magnesium alloy; microstructure; mechanical property; hot-extrusion; dynamic recrystallization

Abstract: Microstructures and mechanical properties of Mg-2.0%Ce-0.7%Zn-0.7%Zr alloy were studied. The results of scanning electron microscopy show that Mg₁₂Ce phase mainly distributes at the grain boundaries. The fine Mg₁₂Ce phase can apparently elevate recrystallization temperature by preventing the grain boundary migration. No dynamic recrystallization occurs during the hot-extrusion. The mechanical properties of as extruded specimens are σ_b=278.5 MPa,δ=12.0%, while those of the specimens annealed at 250℃for 100 h areσ_b=272.6 MPa,δ=11.3%, which indicate that the alloy has good mechanical properties at room temperature.