摘要
采用大变形量挤压工艺制备了高性能Mg-11Al-3Zn镁合金.挤压变形可消除镁合金铸锭中的气孔、疏松和缩孔等缺陷;经热挤压后,晶粒显著细化,由铸态的120μm左右变为30μm左右.经挤压后合金的强度和塑性指标均有所提高.
High-performance Mg-11Al-3Zn alloy were fabricated by hot extrusion of large deformation. Some defects in magnesium alloy ingot, such as gas cavity, shrinkage porosity, shrinkage void, can be eliminated by hot extrusion. After hot extrusion, the grain sizes become distinctly finer from around 120μm to about 30μm. The strength and plasticity of Mg-11Al-3Zn alloy are evidently enhanced after hot extrusion
出处
《材料研究与应用》
CAS
2010年第1期48-51,共4页
Materials Research and Application
关键词
镁合金
大变形
挤压加工
magnesium alloy
large deformation
extrusion processing
