The weldnugget had a dynamic recrystallized, fine isometric crystal structure.
其中,焊核为明显的再结晶等轴晶粒,晶粒明显细化;
2
Dynamic recrystallization takes place in the weldnugget zone and fine grains are achieved.
焊核区发生动态再结晶,生成细小的等轴晶粒。
3
The microstructure of the welded joints was studied by optical microscopy. It is found that the weldnugget has a dynamic recrystallization, fine isometric crystal structure.