Effects of Electromagnetic Stirring on Microstructure of Al-Ti-B Wire

Sun Xiaoping1; Shi Lu1; Guan Renguo1; Na Xingjie1; Wen Jinglin1; Wang Shuncheng2; Qi Wenjun2

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Effects of Electromagnetic Stirring on Microstructure of Al-Ti-B Wire
Vol. 31, Issue 3, Pages: 248-251(2011)
Published： 2011 ，
DOI：

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[1]孙小平,石路,管仁国,那兴杰,温景林,王顺成,戚文军.电磁搅拌对Al-Ti-B线材微观组织的影响[J].特种铸造及有色合金,2011,31(03):248-251+192-193.

Sun Xiaoping1, Shi Lu1, Guan Renguo1, et al. Effects of Electromagnetic Stirring on Microstructure of Al-Ti-B Wire. [J]. Special Casting & Nonferrous Alloys 31(3):248-251(2011)
[1]孙小平,石路,管仁国,那兴杰,温景林,王顺成,戚文军.电磁搅拌对Al-Ti-B线材微观组织的影响[J].特种铸造及有色合金,2011,31(03):248-251+192-193. DOI：

Sun Xiaoping1, Shi Lu1, Guan Renguo1, et al. Effects of Electromagnetic Stirring on Microstructure of Al-Ti-B Wire. [J]. Special Casting & Nonferrous Alloys 31(3):248-251(2011) DOI：

摘要

为了有效控制Al-Ti-B合金线材微观组织中的TiAl3化合物颗粒的状态

研究了Al-Ti-B合金熔体进行电磁搅拌与连续铸挤线材成形过程中

搅拌温度及搅拌时间对化合物TiAl3颗粒的大小、形态及分布的影响。结果表明

电磁搅拌时间的延长可以使TiAl3颗粒的聚集现象消除

颗粒破碎细化

分布趋于均匀

电磁搅拌30min可达到最佳效果;搅拌温度直接影响熔体粘滞力的大小

搅拌温度升高可消除TiAl3颗粒团聚带

改善颗粒的分布

电磁搅拌温度控制在800℃为最佳。

Abstract

To effectively control the morphology of TiAl3 compound particle in microstructure of Al-Ti-B wire

effects of different electromagnetic stirring time and temperature on the size

shape and distribution of TiAl3 phase during electromagnetic stirring and CASTEX deformation of Al-Ti-B melt were investigated by OM （optical microscope）

SEM （scanning electron microscope） and XRD （X-ray diffraction）. The results show that with increasing in electromagnetic stirring time

the conglomeration of TiAl3 phase disappears

and particles are broken and refined with uniform distribution. Desirable refining effects can be observed at 300 min. Stirring temperature directly control the viscous force. With increasing in temperature

aggregating band of TiAl3 phase disappears with the improvement of particle distribution. Desirable electromagnetic stirring temperature is 800℃.