Science and Technology of Advanced Materials (Dec 2017)

Modelling of the material flow of Nd-Fe-B magnets under high temperature deformation via finite element simulation method

  • Yen-Ju Chen,
  • Yen-I Lee,
  • Wen-Cheng Chang,
  • Po-Jen Hsiao,
  • Jr-Shian You,
  • Chun-Chieh Wang,
  • Chia-Min Wei

DOI
https://doi.org/10.1080/14686996.2017.1362589
Journal volume & issue
Vol. 18, no. 1
pp. 611 – 619

Abstract

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Hot deformation of Nd-Fe-B magnets has been studied for more than three decades. With a good combination of forming processing parameters, the remanence and (BH)max values of Nd-Fe-B magnets could be greatly increased due to the formation of anisotropic microstructures during hot deformation. In this work, a methodology is proposed for visualizing the material flow in hot-deformed Nd-Fe-B magnets via finite element simulation. Material flow in hot-deformed Nd-Fe-B magnets could be predicted by simulation, which fitted with experimental results. By utilizing this methodology, the correlation between strain distribution and magnetic properties enhancement could be better understood.

Keywords