| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Microstructure Prediction of the Laser Additive Manufacturing of Silicon-iron Soft Magnet |
| Author(s) |
Fukang Li, Kan Sun, Lei Zuo |
| On-Site Speaker (Planned) |
Fukang Li |
| Abstract Scope |
The distribution of equiaxed grains in soft magnets significantly affects their magnetic properties and performance, such as permeability, coercivity, and eddy current loss. Numerical simulation to simulate dendrite growth and the formation of equiaxed grains is an essential means to study the evolution of complicated microstructure. In this study, a coupled finite difference-cellular automata model was applied to simulate the microstructure evolution in the laser additive process of silicon steel soft magnet. It was observed that the solidified microstructure was composed of columnar and equiaxed grains, and columnar-to-equiaxed transition (CET) increase the distribution of equiaxed grains. The effects of temperature gradient and dendrites growth velocity on CET was investigated, and the results showed that the microstructure was prone to CET transition when the temperature gradient was decreased, or the dendrite growth velocity was increased. |