高温合金叶片单晶凝固技术的新发展
马德新1,2(
)
)
DEVELOPMENT OF SINGLE CRYSTAL SOLIDIFICA- TION TECHNOLOGY FOR PRODUCTION OF SUPERALLOY TURBINE BLADES
MA,Dexin,1,2()
)
图1. 涡轮叶片3种典型晶粒组织的形成原理
Fig.1. Formation principle of three typical grain structures in turbine blade (Q—heat flow, G—temperature gradient)
(a) equiaxed crystal (EQ) (b) directionally solidified crystal (DS) (c) single crystal (SC)
