Effect of a Strong Magnetic Field on Dendritic Growth of Ti-Ni Alloy
A phase field model has been developed to simulate the dendritic growth of Ti-Ni alloy subjected to a strong magnetic field.The influence of a strong magnetic field on the microstructure morphology and its evolution was successfully investigated by the model.The effect of the magnetic field intensity on the dendritic evolution has been further discussed.The simulating results revealed that with greater magnetic field intensity,the primary dendritic arms and the side branches were easier to coarsen.Besides,the dendritic tip growth rate increased with increasing magnetic field intensity,while the curvature radius had an opposite tendency.The microstructure evolution under a strong magnetic field was also studied combined with solidification thermodynamics theory.The results indicate that,the temperature of equilibrium solidification of Ti-Ni alloy changes with the presence of a strong magnetic field,and the morphology of dendritic grains will be affected eventually.
Titanium alloy Phase field Solidification Dendritic growth Magnetic field
Hui Chang Chunli Huang Bin Tang Rui Hu Jinshan Li Hong Zhong
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xian 710072, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
810-817
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）