典型文献
Tailoring Microstructure and Microsegregation in a Directionally Solidified Ni-Based SX Superalloy by a Weak Transverse Static Magnetic Field
文献摘要：
A weak transverse static magnetic field(WTSMF,0-0.5 T)is applied to the directional solidification process of a DD3 Ni-based SX superalloy,aiming to tailor the microstructure and microsegregation of alloys.The mechanisms of microstruc-tural refinement and microsegregation distribution caused by a WTSMF during directional solidification are discussed.It is shown that the primary dendrite arm spacing is rapidly reduced from 181 to 143 μm,and the average size of γ'phase is significantly refined from 0.85 to 0.25 μm as the magnetic field increases from 0 to 0.5 T.At the same time,the volume fractions of γ/γ'eutectic and the segregation coefficient are also gradually decreased.The 3D numerical simulations of the multiscale convection in liquid phase show that the modifications of the microstructure and microsegregation in DD3 are mainly attributed to the enhanced liquid flow caused by thermoelectric magnetic convection(TEMC)at dendrite/sample scale under the WTSMF.The maximum of the TEMC increases with increasing the magnetic field intensity.This work paves a simple way to optimize the microstructure and microsegregation in directionally solidified Ni-based SX superalloys without changing the processing parameters and composition.
文献关键词：
中图分类号：
作者姓名：
Yong Zhao;Haijun Su;Guangrao Fan;Chenglin Liu;Taiwen Huang;Wenchao Yang;Jun Zhang;Lin Liu;Hengzhi Fu
作者机构：
State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China
文献出处：
引用格式：
[1]Yong Zhao;Haijun Su;Guangrao Fan;Chenglin Liu;Taiwen Huang;Wenchao Yang;Jun Zhang;Lin Liu;Hengzhi Fu-.Tailoring Microstructure and Microsegregation in a Directionally Solidified Ni-Based SX Superalloy by a Weak Transverse Static Magnetic Field)[J].金属学报（英文版）,2022(07):1164-1174
A类：
Microsegregation,Solidified,WTSMF,DD3,TEMC
B类：
Tailoring,Microstructure,Directionally,Based,SX,Superalloy,by,Weak,Transverse,Static,Magnetic,Field,weak,transverse,static,magnetic,field,applied,solidification,aiming,tailor,microstructure,microsegregation,mechanisms,tural,refinement,distribution,caused,during,are,discussed,It,shown,that,primary,dendrite,arm,spacing,rapidly,reduced,from,average,size,phase,significantly,refined,increases,At,same,volume,fractions,eutectic,coefficient,also,gradually,decreased,numerical,simulations,multiscale,convection,liquid,modifications,mainly,attributed,enhanced,flow,thermoelectric,sample,under,maximum,increasing,intensity,This,work,paves,simple,way,optimize,directionally,solidified,superalloys,without,changing,processing,parameters,composition
AB值：
0.513974
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