摘要
通过数值模拟探讨了M2高速钢定向凝固过程中无外加磁场以及外加0.5T横向稳恒磁场对V含量分布的影响,并建立数值模型,将模拟结果与试验结果进行对比,两者结果相符。数值模拟分析结果显示:当不加磁场时,坩埚中对流由自然对流占主导,并不会发生溶质的单向传输;当外加0.5T横向磁场时,坩埚中对流由单向的热电磁流主导,单向运输的溶质会富集于试样一侧。
By means of simulation, the influence of non-applied and 0.5 T external magnetic field on V content distribution in the directional solidification process of M2 high-speed steel was investigated. The simulation results were compared with the experimental results by establishing the numerical model, and the two results were in good agreement. Numerical simulation results showed that the convection in the crucible was dominated by natural convection with non-applied magnetic field, and there wasn’t single side transport of solute. While, the convection in the crucible was mainly effected by one-sided thermal electromagnetic flow when applied a 0.5 T transverse magnetic field, and solute transported in one direction will be concentrated on only one side of the sample.
作者
夏智斌
齐文涛
李强
孙楚雄
郑天祥
钟云波
XIA Zhi-bin;QI Wen-tao;LI Qiang;SUN Chu-xiong;ZHENG Tian-xiang;ZHONG Yun-bo(School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China)
出处
《模具工业》
2020年第2期14-17,共4页
Die & Mould Industry
基金
国家重点研发计划项目（2016YFB0300401）
国家自然科学基金项目（U1860202,U1732276,50134010,51704193）
上海市科学技术委员会基金项目（13JC1402500,15520711000）
关键词
横向稳恒磁场
M2高速钢
数值模拟
定向凝固
热电磁
transverse static magnetic field
M2 high speed steel
numerical simulation
directional solidification
thermal electromagnetic
