Advances in Manufacturing ›› 2018, Vol. 6 ›› Issue (2): 189-194.doi: 10.1007/s40436-017-0206-5

• ARTICLES • 上一篇    下一篇

Fine equiaxed dendritic structure of a medium carbon steel cast using pulsed magneto-oscillation melt treatment

Jie Sun1, Cheng Sheng1, Ding-Pu Wang1, Jing Zhao3, Yun-Hu Zhang2, Hong-Gang Zhong1, Gui Wang4, Qi-jie Zhai1   

  1. 1 State Key Laboratory of Advanced Special Steels, Shanghai University, Shanghai 200072, People's Republic of China;
    2 School of Materials Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China;
    3 School of Electrical Engineering, Tangshan University, Tangshan 063020, Hebei, People's Republic of China;
    4 Centre of Advanced Materials Processing and Manufacturing, The University of Queensland, St Lucia, QLD 4072, Australia
  • 收稿日期:2017-06-20 修回日期:2017-12-08 出版日期:2018-06-25 发布日期:2018-06-27
  • 通讯作者: Qi-jie Zhai E-mail:qjzhai@staff.shu.edu.cn
  • 基金资助:
    This research was financially supported by the National Natural Science Foundation of China (Grant No. 51320105003), Shanghai Government (Grant No. 14DZ2261200), and the Science and Technology Commission of Shanghai Municipality (Grant No. 15520710800).

Fine equiaxed dendritic structure of a medium carbon steel cast using pulsed magneto-oscillation melt treatment

Jie Sun1, Cheng Sheng1, Ding-Pu Wang1, Jing Zhao3, Yun-Hu Zhang2, Hong-Gang Zhong1, Gui Wang4, Qi-jie Zhai1   

  1. 1 State Key Laboratory of Advanced Special Steels, Shanghai University, Shanghai 200072, People's Republic of China;
    2 School of Materials Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China;
    3 School of Electrical Engineering, Tangshan University, Tangshan 063020, Hebei, People's Republic of China;
    4 Centre of Advanced Materials Processing and Manufacturing, The University of Queensland, St Lucia, QLD 4072, Australia
  • Received:2017-06-20 Revised:2017-12-08 Online:2018-06-25 Published:2018-06-27
  • Contact: Qi-jie Zhai E-mail:qjzhai@staff.shu.edu.cn
  • Supported by:
    This research was financially supported by the National Natural Science Foundation of China (Grant No. 51320105003), Shanghai Government (Grant No. 14DZ2261200), and the Science and Technology Commission of Shanghai Municipality (Grant No. 15520710800).

摘要: The application of a pulsed magneto-oscillation (PMO) technique during the solidification of a commercial high melting point medium carbon steel ingot (φ140 mm 9 450 mm) produced fully equiaxed grains in the cast ingot, indicating that the PMO process significantly promotes heterogeneous nucleation near the solid-liquid interface. The vigorous convection induced by PMO forced the partly solidified grains to move from the solid-liquid interface and became randomly distributed throughout the melt, which resulted in the formation of uniformly sized equiaxed dendrites throughout the whole ingot. Building on the developed nucleation mechanism and a flow field simulation of pure aluminum, a PMO-induced grain refinement model for steel is proposed.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-017-0206-5

关键词: Pulsed magneto-oscillation (PMO), Grain refinement, Carbon steel, Simulation, Microstructure

Abstract: The application of a pulsed magneto-oscillation (PMO) technique during the solidification of a commercial high melting point medium carbon steel ingot (φ140 mm 9 450 mm) produced fully equiaxed grains in the cast ingot, indicating that the PMO process significantly promotes heterogeneous nucleation near the solid-liquid interface. The vigorous convection induced by PMO forced the partly solidified grains to move from the solid-liquid interface and became randomly distributed throughout the melt, which resulted in the formation of uniformly sized equiaxed dendrites throughout the whole ingot. Building on the developed nucleation mechanism and a flow field simulation of pure aluminum, a PMO-induced grain refinement model for steel is proposed.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-017-0206-5

Key words: Pulsed magneto-oscillation (PMO), Grain refinement, Carbon steel, Simulation, Microstructure