工程科学学报Issue(10)：1313-1318,6.DOI:10.13374/j.issn2095-9389.2015.10.009
各向异性表面张力对柱晶界面形态的影响
Effect of anisotropic surface tension on the interface morphology of column crystals
摘要
Abstract
The effect of anisotropic surface tension on the growth behavior of column crystals at quasi-steady state is considered in this article. By using the method of asymptotic expansion, a mathematic expression is obtained to describe the interface patterns of column crystals, and the interface morphology change with different anisotropic parameters is discussed. The results show that aniso-tropic surface tension has a great effect on the interface morphology. During the initial stage, some part of the interface shrinks inward first, and then it starts to move outward after the shrink reaches a critical value. In the direction of preferred growth, the interface of column crystals grows faster. The effect of anisotropic surface tension leads to bulge formation of the interface. As the anisotropic parameters increase, the bulge formation gets obvious.关键词
晶体/各向异性/表面张力/渐近展开法/晶体生长/形态Key words
crystals/anisotropy/surface tension/asymptotic expansion/grain growth/morphology分类
矿业与冶金引用本文复制引用
杨振超,陈明文,王艳林,王自东..各向异性表面张力对柱晶界面形态的影响[J].工程科学学报,2015,(10):1313-1318,6.基金项目
教育部海外名师资助项目(MS2010BJKJ005) （MS2010BJKJ005）
江西省科技支撑计划资助项目(20112BBE50006) （20112BBE50006）
国家自然科学基金资助项目(10972030) （10972030）
