高温合金单晶铸件中共晶组织分布的表面效应

马德新, 赵运兴, 徐维台, 皮立波, 李重行

Surface Effect on Eutectic Structure Distribution in Single Crystal Superalloy Castings

MA Dexin, ZHAO Yunxing, XU Weitai, PI Libo, LI Zhongxing

图8 一个铸件单元上下表面之间的定向凝固及共晶聚集过程示意图

Fig.8 Schematics illustrating the starting stage (a), stable growth (b), and end stage (c) of directional solidification between the bottom and upper surfaces in a solidification unit, showing the accumulation process of γ/γ′ eutectics