摘要
对AZ80＋Ce镁合金轮毂成形过程中的显微组织、力学性能进行了分析和研究。结果表明在轮毂成形过程中,每一次的塑性变形都发生了动态再结晶,晶粒随着变形次数的增加而逐渐减小。稀土元素Ce作为形核核心促进了形核并阻止晶粒进一步长大,从而细化了合金晶粒。轮毂抗拉强度达到310-320 MPa,伸长率达到13%-14.2%,满足产品要求。
The microstructure and the mechanical properties of AZ80＋Ce magnesium alloy wheel hub during forming pratess were analyzed and researched. The results show that in the process of forming wheel hub, the dynamic recrystallization occurs in each plastic deformation. The grain size decreases gradually with the increase of deformation times. The rare earth element Ce as the nucleating center promotes the nucleation and prevents further growth of the grains, so as to refine the grain of the alloy. The tensile strength of the wheel hub reaches 310-320 MPa, and the elongation reaches 13%-14.2%, which meets product requirements.
出处
《热加工工艺》
CSCD
北大核心
2016年第7期141-143,共3页
Hot Working Technology
关键词
稀土元素CE
AZ80
镁合金
组织演变
力学性能
rare earth element Ce
AZ80 magnesium alloy
microstructure evolution
mechanical properties
