Solute Analyse of Directional Solidification Microstructure in a Binary Alloy
In this paper,the directional solidification microstructure of Bridgman system was simulated using phase-field method,and different calculated results were obtained with four pulling velocities.Transverse solute shows U shape profiles.With the pulling velocity (Vp) increasing,the span of U figures decreases and the deepness of U figures decreases too.When the pulling velocity reaches 3.00 cm/s,the U figures disappear.With the supersaturation and the growing velocity increases,the directional microstructure changes from thin columnar crystals into much thinner columnar crystals.Transverse solute has a very little fluctuation around the initial concentration and the solute trapping phenomenon takes place.
numerical simulation Bridgman directional solidification microsegregation phase-field method microstructure pulling velocity
Jinjun Tang Mingan Zhou
Ningbo Sub-academy of the National Weapons Science Research Academy,Ningbo 315103,China Department of Mechanical Engineering,Quzhou College of Technology,Quzhou 324000,China
国际会议
沈阳
英文
889-892
2012-09-26（万方平台首次上网日期，不代表论文的发表时间）