[IS] IS1 Frontiers in Structural Materials Research through Advanced Measurement Techniques

3:15 PM - 3:45 PM JST(6:15 AM - 6:45 AM UTC)

[IS10] Grain Boundary Character and Solute Interactions in Segregation at α-Fe Boundaries

○Goro Miyamoto Miyamoto¹, Yongjie Zhang¹, Tadashi Furuhara² (1. Tohoku University, 2. NIMS)

Keywords:

Grain boundary,Segregation,Three-dimensional atom probe

We characterized the segregation of C, P, and Sn at α-Fe GBs using three-dimentional atom probe. The results revealed repulsive interactions among C–C, C–P, and C–Sn pairs, leading to suppressed co-segregation. In addition, variant boundaries in lath martensite were weaker segregation sites than prior austenite grain boundaries.