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

15:15 〜 15:45

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

○宮本 吾郎¹、張 咏杰¹、古原 忠² (1. 東北大学、2. 物質・材料研究機構)

キーワード：

結晶粒界、粒界偏析、三次元アトムプローブ

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.