The authors consider the refinement of the microstructure of copper (grade M1) on the rate of deformation using a “helical rolling-pressing” method. The deformation was performed at 500°C. It was shown that high intensity of the shear deformations characteristic of helical rolling and a combined process of “helical rolling-pressing” allows for a significant grain refinement. The minimum grain size is obtained when the mill rolls rotate at 120 rpm.

中文翻译：

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铜的微观结构中晶粒尺寸对“螺旋滚压”变形速率的依赖

作者考虑使用“螺旋滚压”方法，以变形速率细化铜（M1级）的微观结构。变形在500℃下进行。结果表明，螺旋轧制的高剪切变形特性和“螺旋轧制-压制”相结合的过程可以实现显着的晶粒细化。当轧辊以120 rpm的转速旋转时，可获得最小的晶粒尺寸。