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7 固溶热处理后的缘板与叶身转接处纵截面显微组织的OM像，及其两侧部位A和B的放大图

Fig.7 OM images of longitudinal section microstructure at the junction between platform and aerofoil (b) and the magnifications showing the residual eutectics in areas A (a) and B (c) after solution heat treatment