The study shows the dendrite grows along the main branch direction slickly under disturbed condition and second side branch may grow under the undisturbed condition.

• 研究结果表明,不加扰动时,晶粒的生长是沿着主干方向进行,光滑且不出现二次枝晶,加扰动时,晶粒生长出发达的侧枝。