It turns out that crack closure is the main reason for retardation, and crack tip blunting, crack deflection and strain-inducedmartensite would reinforce it.
The results show that the effects of work hardening by strain-inducedmartensite transformation and cast pore defects are the main reasons leading to strip broken of the steels during cold rolling.
结果表明，形变诱发马氏体组织所加剧的加工硬化与冶炼时所产生的气孔缺陷的共同作用是冷轧断带的原因。
3
The result of magnetic measurement shows that the amount of deformation-inducedmartensite increases with the increasing of plastic strain.