Metal in the nugget zone undergoes coupled thermomechanical process and plastically deformed.As a result, a lot of grain cracked and recrystallized.The thermomechenicallly affected zone can be ...

• 焊合区金属在热力耦合作用下发生塑性变形,造成大量晶粒破碎,破碎的晶粒发生动态再结晶,热力影响区组织可以分成再结晶区、不完全再结晶区和动态回复区。