首页|Revealing the influential mechanism of electromagnetic vibration on the bulk solidification and the upward continuous casting of Cu-15Ni-8Sn Alloy

Revealing the influential mechanism of electromagnetic vibration on the bulk solidification and the upward continuous casting of Cu-15Ni-8Sn Alloy

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The effect of electromagnetic vibration(EMV)on the solidification structure of Cu-15Ni-8Sn alloy during bulk solidification and the upward continuous casting was investigated experimentally and numerically.The bulk solidification results indicated that in the case of B=0.5 T and J=1.27 x 105 A/m2,the most effective grain refinement frequency was at f=10 Hz,where fine non-dendrites were obtained.The so-lidification structure became coarser at f=0.1 Hz and f=1 Hz compared to the case of f=10 Hz,while no grain refinement was observed at f=100 Hz.The numerical simulations showed that at f=10 Hz,the strong melt convection surrounding the primary solid phase promotes the diffusion of the rejected solute,consequently,resulting in a reduction of the solute boundary layer,which leads to the decrease in the nucleation-free zone(NFZ)and the grain refinement.Additionally,the most effective grain refinement frequency transformed to 1 Hz when the electromagnetic force was reduced by five times.Moreover,we proposed that the most effective grain refinement frequency range aligns with the EMV-induced rela-tive displacement in the range of 102-103 μm.Finally,the upward continuous casting was conducted to validate the relative displacement range,and the experimental results matched well.

Electromagnetic vibrationGrain refinementSolidification structureUpward continuous casting

Ganpei Tang Zhe Sun、Zhongze Lin、Tianxiang Zheng Bangfei Zhou、Peijian Shi、Qiang Li、Chunmei Liu、Haibiao Lu、Zhe Shen、Biao Ding、Yunbo Zhong

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State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaYoung Elite Scientists Sponsorship Program by CAST

519041845220439252274385522043472022YFC29049002022QNRC001

2024

10.1016/j.jmst.2023.12.019

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.189(22)