过冷(Fe1 -x Co x)79.3B20.7 合金的凝固

过冷(Fe₁_-_x Co _x)_79.3B_20.7 合金的凝固

杨林, 马长松, 刘连杰, 李金富

Solidification of Undercooled (Fe₁_-_x Co _x)_79.3B_20.7 Alloys

YANG Lin, MA Changsong, LIU Lianjie, LI Jinfu

图3 (Fe_0.8Co_0.2)_79.3B_20.7合金的凝固冷却曲线、XRD谱及不同过冷度(ΔT)下合金组织的OM像

Fig.3 Cooling curves (a), XRD spectra (b), and OM images (c-f) of (Fe_0.8Co_0.2)_79.3B_20.7 alloy under different undercoolings (ΔT) (Insets in Figs.3d-f show the higher magnification microstructures, T_L is the liquidus temperature of the alloy, $T_{E, α ‐ M / M_{2} B}$ is the temperature of the eutectic reaction L→α-M + M₂B, and $T_{L, M_{23} B_{6}}$ is the melting temperature of M₂₃B₆ phase)
(c) ΔT = 10 K (d) ΔT = 233 K (e) ΔT = 305 K (f) ΔT = 351 K