Because magnets fabricated using Nd-Fe-B exhibit excellent magnetic properties, this novel material is used in various high-tech industries. However, because of the brittleness and low formability of Nd-Fe-B magnets, the design freedom of shapes for improving the performance is limited based on conventional tooling and postprocessing. Laserpowder bed fusion (L-PBF), the most famous additive manufacturing (AM) technique, has recently emerged as a novel process for producing geometrically complex shapes of Nd-Fe-B parts owing to its high precision and good spatial resolution. However, because of the repeated thermal shock applied to the materials during L-PBF, it is difficult to fabricate a dense Nd-Fe-B magnet. In this study, a high-density (>96%) Nd-Fe-B magnet is successfully fabricated by minimizing the thermal residual stress caused by substrate heating during L-PBF.

Abstract
1. Introduction
2. Expermental
3. Results and Discussion
    3.1. 최적 공정 변수 탐색
    3.2. 밀도 분석
    3.3. 자기적 특성 분석
4. Conclusion
Acknowledgement
References

• 김연우(한국재료연구원, 부산대학교 재료공학과) | Yeon Woo Kim (Korea Institute of Materials Science (KIMS), Department of Materials Science and Engineering, Pusan National University)
• 박하음(한국재료연구원) | Haeum Park (Korea Institute of Materials Science (KIMS))
• 김태훈(한국재료연구원) | Tae-Hoon Kim (Korea Institute of Materials Science (KIMS))
• 김경태(한국재료연구원) | Kyung Tae Kim (Korea Institute of Materials Science (KIMS))
• 유지훈(한국재료연구원) | Ji-Hun Yu (Korea Institute of Materials Science (KIMS))
• 최윤석(부산대학교 재료공학과) | Yoon Suk Choi (Department of Materials Science and Engineering, Pusan National University) Corresponding Author
• 박정민(한국재료연구원) | Jeong Min Park (Korea Institute of Materials Science (KIMS)) Corresponding Author