Temperature distribution in front of the liquid-solid interface in the undercooled pure melt influenced by a transverse far field flow  

作　　者：Mingwen Chen Zidong Wang Wei Yang Renji Sun Xinfeng Wang 

机构地区：[1]Applied Science School, University of Science and Technology Beijing, Beijing 100083, China [2]Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China [3]Department of Mathematics, Linyi Normal University, Linyi 276000, China [4]Beijing Union University, Beijing 100101, China

出　　处：《Journal of University of Science and Technology Beijing》2007年第6期495-500,共6页北京科技大学学报（英文版）

基　　金：This work was financially supported by the Major State Basic Research Development Program of China (973 Program, No.2006CB605205)

摘　　要：The directional solidification in the undercooled pure melt influenced by a transverse far field flow was studied by using the multiple scale method. The result shows that in the boundary layer near the liquid-solid interface, when affected by a transverse far field flow, the temperature distribution in the direction of crystal growth presents an oscillatory and decay front in the side of liquid phase. The crucial distinguishing feature of a temperature pattern due to the transverse convection is the additional periodic modulation of the pattern in the growth direction. The wave number and eigenvalue that satisfy the Mullins-Sekerka dispersion relation are suppressed by the transverse far field flow.The directional solidification in the undercooled pure melt influenced by a transverse far field flow was studied by using the multiple scale method. The result shows that in the boundary layer near the liquid-solid interface, when affected by a transverse far field flow, the temperature distribution in the direction of crystal growth presents an oscillatory and decay front in the side of liquid phase. The crucial distinguishing feature of a temperature pattern due to the transverse convection is the additional periodic modulation of the pattern in the growth direction. The wave number and eigenvalue that satisfy the Mullins-Sekerka dispersion relation are suppressed by the transverse far field flow.

关 键 词：metal solidification crystal growth pure melt far field flow 

分 类 号：TG11[金属学及工艺—物理冶金]