Fig. 1. The morphology evolution of columnar crystal in a straining flow on the cross-section of plane at where E = 0.3, 0.02,

Fig. 2. The morphology evolution of columnar crystal in a straining flow at where

Fig. 3. Interface morphology of columnar crystals affected by different sizes of straining flow, where A is 0.9, 0.6, 0.3, 0 from left to right, respectively.

Fig. 4. Evolution of columnar crystal interface with time in the plane, where m₂ = –2.33, E = 0.3, M_k = 0.01, k_T = 1.23,

Fig. 5. Effect of straining flow on the interface morphology of columnar crystals in different impurity content, where

Fig. 6. Effect of straining flow on the interface morphology of columnar crystals in different impurity content, where

Fig. 7. The change of impurity concentration at the interface of columnar crystal in the plane, where –2.33