基于微观测量技术的Cu-10.25%Mg过共晶合金定向凝固过程中的枝晶形貌分析  

Analysis on Dendrite Morphology of Hypereutectic Alloy in Directional Solidification Process Based on Microscopic Measurement Technology

作　　者：宋晓惠[1,2] 

机构地区：[1]吉林省经济管理干部学院,吉林长春130012 [2]同济大学,上海200092

出　　处：《铸造技术》2014年第10期2374-2376,共3页Foundry Technology

摘　　要：采用连续切片三维重构技术,以C15结构的Laves相Cu2Mg为研究对象,研究Cu-10.25%Mg过共晶合金定向凝固过程中初生相Cu2Mg的三维枝晶形貌。结果表明,其二次侧枝具有"板条"、"棱面"和"八面体"的形态,三维截面组织能够较好的反映初生相Cu2Mg的枝晶形貌,共晶组织填充了一次枝晶干和侧枝之间存在的空隙。Using the serial section three-dimensional reconstruction technology, taking Cu2Mg of Laves phase with C15 structure as research object, the ＇three-dimensional dendritic morphology of primary phase Cu2Mg of Cu-10.25% Mg eutectic alloy in the process of directional solidification was studied. The results show that the secondary lateral branch has the shape of ＂plate-like＂, ＂faceted＂ and ＂octahedral＂. The three-dimensional sectional structure can better reflect the primary phase Cu2Mg dendrite morphology, eutectic structure filled the gap between primary dendrite dry and lateral branch.

关 键 词：Cu-10.25%Mg定向凝固 枝晶形貌 三维枝晶形貌 

分 类 号：TG244[金属学及工艺—铸造]