结果表明，铁素体组织随变形道次的增加逐渐演变为等轴状大角度晶界的亚微晶组织；
The results indicate that the initial ferrite microstructure gradually developed into the equiaxed submicrometer grain microstructure with high angle boundaries with increasing the pass number.
结果表明，铁素体组织随变形道次的增加逐渐演变为等轴状大角度晶界的亚微晶组织；
The results indicate that the initial ferrite microstructure gradually developed into the equiaxed submicrometer grain microstructure with high angle boundaries with increasing the pass number.
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