| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
Cracking of Fe-xSi Alloys During Selective Laser Melting |
| Author(s) |
Jiwoo Park, Cheol Kang, Hyung Giun Kim, Gun-Hee Kim, Joonho Lee |
| On-Site Speaker (Planned) |
Jiwoo Park |
| Abstract Scope |
Fe-Si alloy is a representative soft magnetic material, which is used in the cores of motors and transformers. Increasing the silicon content up to 6.5wt% improves magnetic properties but also increases brittleness, leading to poor workability. Thus, the potential improvement in performance through an increase in silicon content is limited in the conventional process. Recently, selective laser melting (SLM) has emerged as a promising technology for producing high-silicon steel. However, the cracking of SLM-built high-silicon steel has been reported in many previous studies. One primary cause of cracking in SLM-built high-silicon steel is silicon segregation during the solidification, leaving a liquid film until the final stage of solidification. In the present study, the cracking behavior of SLM-built Fe-xSi alloy (x: 2-10 wt%) was investigated. Using Kou’s model, which is based on the Scheil solidification model, cracking susceptibility was theoretically predicted, and experimental results were compared with theoretical predictions |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Solidification |