Archives of Metallurgy and Materials

Institute of Metallurgy and Materials Science of Polish Academy of Sciences
권호 표지
DOI QR코드

DOI QR Code

EFFECT OF TEMPERATURE ON THE PLASTIC DEFORMABILITY OF GAS ATOMIZED NdFeB ANISOTROPIC MAGNETS

  • JU-YOUNG CHO (KOREA INSTITUTE FOR RARE METALS, KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY) ;
  • YONG-HO-CHOA (HANYANG UNIVERSITY, DEPARTMENT OF MATERIAL SCIENCE AND CHEMICAL ENGINEERING) ;
  • SUN-WOO-NAM (KOREA INSTITUTE FOR RARE METALS, KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY) ;
  • RASHEED MOHAMMAD ZARAR (KOREA INSTITUTE FOR RARE METALS, KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY) ;
  • TAEK-SOO KIM (KOREA INSTITUTE FOR RARE METALS, KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY)
  • Published : 20200000
⟨ Previous Next ⟩

Abstract

NdFeB anisotropic sintered permanent magnets are typically fabricated by strip casting or melt spinning. In this study, the plastic deformability of an NdFeB alloy was investigated to study the possibility of fabricating anisotropic sintered magnets using gas atomized powders. The results show that the stoichiometric composition Nd12Fe82B6 softens at high temperatures. The aspect ratio and orientation factor of Nd12Fe82B6 billets after plastic deformation were found to increase with increasing plastic deformation temperature, particularly above 800℃. This confirms that softening at high temperatures can lead to plastic deformation of Nd2Fe14B hard magnetic phases.

Keywords

Acknowledgement

This research was supported by a grant from the project "Development of environment friendly pyrometallurgy process for high purity HREE and materialization" by the Korea Evaluation Institute of Industrial Technology (KEIT), Republic of Korea.