高纯铝定向凝固中晶界结构和溶质分布特性的研究  

Research on Grain boundary Structure and Solute Distribution Character of High Purity Aluminum in Directional Solidification Process

作　　者：安少云[1] 张佼[2] 

机构地区：[1]承德石油高等专科学校机械工程系,河北承德067000 [2]上海交通大学材料科学与工程学院,上海200240

出　　处：《铸造技术》2014年第5期1013-1018,共6页Foundry Technology

摘　　要：利用自制的高纯铝定向凝固装置,研究高纯铝定向凝固过程中胞状晶界的结构特性,计算了定向凝固固相晶界的溶质浓度分布。结果表明,高纯铝胞状晶晶界边缘存在微观的隆起和皱褶,晶界处的溶质浓度与晶界结构参数、液固界面前沿液相溶质浓度和定向凝固速度相关。The grain boundary characteristic in the process of directional solidification was studied by self-made equipment, and the distribution of solutes was calculated. The results show that the upheaval and fold present in the afterbirth-like crystal boundary edges of high purity aluminum. The solute concentration at boundary, structure parameters of boundary and the liquid solute concentration in front of solid-liquid interface relate with the speed of directional solidification.

关 键 词：高纯铝 定向凝固 晶界结构 溶质分布 

分 类 号：TG292[金属学及工艺—铸造]