图11. 均匀化热处理参数为TSHT 5条件下GH4720Li合金细晶铸锭不同热变形参数下的微观组织

Fig.11. Microstructures of as-cast fine grain ingot of GH4720Li alloy under homogenization treatment parameter of TSHT 5 (Inset shows the morphology of locally magnified microstructure, T—temperature, \dot{\epsilon }—deformation rate, ε—strain, DRX—dynamic recrystallization, CDRX—continuous dynamic recrystallization, DDRX—discontinuous dynamic recrystallization)(a) T=1160 ℃, \dot{\epsilon }=1 s^-1, ε=0.3 (b) T=1160 ℃, \dot{\epsilon }=1 s^-1, ε=0.8(c) T=1160 ℃, \dot{\epsilon }=0.01 s^-1, ε=0.8 (d) T=1140 ℃, \dot{\epsilon }=0.01 s^-1, ε=0.8