[G] Plastic Deformation/Additive Manufacturing (Evaluation of Microstructure and Properties)

[278] Quantitative analysis of segregation behavior at melt pool boundary in 316L stainless steel fabricated by laser powder bed fusion

*Fei SUN¹, Junki Inagaki¹, Ta-Te Chen¹, Yoshitaka Adachi¹, Kazuhisa Sato², Takuya Ishimoto³, Takayoshi Nakano^4,5, Yuichiro Koizumi^4,5 (1. Department of Material Design Innovation Engineering, Nagoya University, 2. Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, 3. Aluminium Research Center, University of Toyama, 4. Division of Materials and Manufacturing Science, Osaka University, 5. Anisotropic Design & Additive Manufacturing Research Center, Osaka University)

Keywords:laser powder bed fusion、melt pool boundary、segregation、TEM

We controlled the epitaxial growth directions of the columnar grains at MPB in 316LSS by LPBF, aiming to clarify the exact location of the MPB and quantitively analyze the segregation behavior.