铝合金电磁脉冲铸造过程数值模拟研究
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- 英文论文题名：A research on aluminum alloys of pulsed magnetic casting process numerical simulation
- 论文作者：冯艳飞 ; 麻永林 ; 王军 ; 白庆伟 ; 邢淑清 ; 乔伟超
- 英文论文作者：FENG Yanfei ; MA Yonglin ; WANG Jun ; BAI Qingwei ; XING Shuqing ; QIAO Weichao ; Materials and Metallurgy College of Inner Mongolia University of Science and Technology
- 年：2016
- 作者机构：内蒙古科技大学材料与冶金学院;
- 论文关键词：数值模拟 ; 脉冲线圈 ; 磁感应强度 ; 电磁力 ; 磁能
- 英文论文关键词：numerical simu lation ; pulsed coil ; magnetic induction intensity ; magnetic force ; magnetic energy
- 会议召开时间：2016-08-15
- 会议录名称：第三届全国电磁冶金与强磁场材料科学会议学术论文集
- 语种：中文
- 分类号：TG292
- 学会代码：ZGJS
- 会议名称：第三届全国电磁冶金与强磁场材料科学会议
- 会议地点：中国河南焦作
- 主办单位：中国金属学会电磁冶金与强磁场材料科学分会
- 学会名称：中国金属学会
- 页数：6
- 文件大小：1233k
- 原文格式：O
- 会议级别：全国
摘要
运用有限元数值模拟的方法计算不同脉冲电流下铝合金熔体铸造内部的磁感应强度、电磁力、电磁能分布情况,并分析研究频率、电流对熔体内部磁场分布的影响。结果表明:数值模拟结果与试验结果变化基本一致。轴向中部磁感应强度最大,越靠熔体上下两端磁感应强度逐渐减小。熔体径向磁感应强度分布呈心部小,边部大,呈轴对称分布。单位体积的磁能随频率降低而增大,频率为10Hz、电流为70A时,熔体的单位体积的电磁能分别为4087.23J/m~3;单位体积的电磁力随着脉冲电流增加而显著增大,频率为50Hz、电流为70A时,熔体的单位体积电磁力为1.33x10~5N/m~3。数值模拟结果初步分析了脉冲磁场在铝合金熔体中的分布情况,为电磁脉冲铝合金凝固机理研究奠定了理论基础。
By using the finite element numerical simulation method to calculate aluminum alloys melt internal casting different pulsed current of distribution of magnetic induction intensity.magnetic force,magnetic energy.And analysis of the melt internal distribution of pulsed magnetic field effect by the frequency and current.The results show that the numerical simulation results are in agreement with the experimental results.The magnetic induction intensity is the largest in the melt of the central part.And The magnetic induction gradually decreases with the melt up and down.The melt of magnetic induction intensity of radial distribution that the center is small,and that the side part is large,is axially symmetrical.The magnetic energy of unit volume increase with the decrease of frequency.When the frequency is 10 Hz and the current is 70 A,the melt of unit volume of the magnetic energy is 4087.23J/m~3;The magnetic force of unit volume increases with the increase of the pulsed current.When the frequency is 50 Hz and the current is 70 A,the magnetic force of unit volume of the melt is 1.33×10~5N/m~3.The results indicate distribution of pulsed magnetic field in aluminum alloy melt by numerical simulation and It is a theoretical foundation for the study of solidification mechanism of pulsed magnetic field to aluminum alloy s.
By using the finite element numerical simulation method to calculate aluminum alloys melt internal casting different pulsed current of distribution of magnetic induction intensity.magnetic force,magnetic energy.And analysis of the melt internal distribution of pulsed magnetic field effect by the frequency and current.The results show that the numerical simulation results are in agreement with the experimental results.The magnetic induction intensity is the largest in the melt of the central part.And The magnetic induction gradually decreases with the melt up and down.The melt of magnetic induction intensity of radial distribution that the center is small,and that the side part is large,is axially symmetrical.The magnetic energy of unit volume increase with the decrease of frequency.When the frequency is 10 Hz and the current is 70 A,the melt of unit volume of the magnetic energy is 4087.23J/m~3;The magnetic force of unit volume increases with the increase of the pulsed current.When the frequency is 50 Hz and the current is 70 A,the magnetic force of unit volume of the melt is 1.33×10~5N/m~3.The results indicate distribution of pulsed magnetic field in aluminum alloy melt by numerical simulation and It is a theoretical foundation for the study of solidification mechanism of pulsed magnetic field to aluminum alloy s.
引文
[1]贺幼良,杨院生,胡壮麒.电磁场作用下的金属凝固与成形[J].材料导报,2000,14(7):3-7.
[2]NAKADA M.SHIOHARA Y,FLEMINGS M C.Modification of solidification structures by pulse electric discharging[J].ISIJ International,1990,30(1):27-33.
[3]訾炳涛,崔建忠,巴启先.脉冲电流和脉冲磁场作用下LY12铝合金凝固组织的比较[J].热加工工艺,2000(4):3-5.
[4]訾炳涛,巴启先,崔建忠,等.强脉冲磁场对金属凝固组织影响的研究[J].物理学报,2000,49(5):1010-1014.
[5]赵志龙,张蓉,刘林,等.强脉冲磁场中Al-Cu共晶定向凝固组织的演变[J].材料研究学报,2005,19(2):207-212.
[6]ZIBT,BAQX,CUIJZ,XUGM.Study on axial changes of as-cast structures of Al-alloy sample treated by the novel SPMF technique[J].Scripta Materialia,2000,43:377-380.
[7]杨院生,付俊伟,罗天骄,汪斌,冯小辉,童文辉,李应举.镁合金低压脉冲磁场晶粒细化[J].中国有色金属学报,2011,21(10):2639-2647
[8]WANG B,YANG Y S,ZHOU J X TONG W H.Microstructure refinement of AZ91D alloy solidified with pulsed magnetic field[J].Transactions of Nonferrous Metals Society of China,2008,18(3):536-540.
[9]汪彬,杨院生,周吉学,童文辉.脉冲磁场对Mg-Gd-Y-Zr合金凝固及力学性能的影响[J].稀有金属材料与工程,2009,38(3):519-522.
[10]杨院生,付俊伟,罗天娇,汪彬,等.镁合金低压脉冲磁场晶粒细化[J].中国有色金属学报,2011,21(10):2643-2644.
[2]NAKADA M.SHIOHARA Y,FLEMINGS M C.Modification of solidification structures by pulse electric discharging[J].ISIJ International,1990,30(1):27-33.
[3]訾炳涛,崔建忠,巴启先.脉冲电流和脉冲磁场作用下LY12铝合金凝固组织的比较[J].热加工工艺,2000(4):3-5.
[4]訾炳涛,巴启先,崔建忠,等.强脉冲磁场对金属凝固组织影响的研究[J].物理学报,2000,49(5):1010-1014.
[5]赵志龙,张蓉,刘林,等.强脉冲磁场中Al-Cu共晶定向凝固组织的演变[J].材料研究学报,2005,19(2):207-212.
[6]ZIBT,BAQX,CUIJZ,XUGM.Study on axial changes of as-cast structures of Al-alloy sample treated by the novel SPMF technique[J].Scripta Materialia,2000,43:377-380.
[7]杨院生,付俊伟,罗天骄,汪斌,冯小辉,童文辉,李应举.镁合金低压脉冲磁场晶粒细化[J].中国有色金属学报,2011,21(10):2639-2647
[8]WANG B,YANG Y S,ZHOU J X TONG W H.Microstructure refinement of AZ91D alloy solidified with pulsed magnetic field[J].Transactions of Nonferrous Metals Society of China,2008,18(3):536-540.
[9]汪彬,杨院生,周吉学,童文辉.脉冲磁场对Mg-Gd-Y-Zr合金凝固及力学性能的影响[J].稀有金属材料与工程,2009,38(3):519-522.
[10]杨院生,付俊伟,罗天娇,汪彬,等.镁合金低压脉冲磁场晶粒细化[J].中国有色金属学报,2011,21(10):2643-2644.