Abstract Rotary extrusion is a technique to produce workpieces with a very large strain and a weak texture. In this work, deformation behavior and microstructure evolution of magnesium alloys via rotary extrusion were investigated. The results show that the flow stress of the rotary extrusion is significantly lower than that of the direct backward extrusion. The equivalent stress decreases upon the increase of the rotations number. The cup-shaped parts formed via rotary extrusion exhibits a typical gradient structure, which expands from its center to the borders. The basal texture of the sample is smaller than that produced by direct backward extrusion. Moreover, it further decreases upon the increase of the rotation number.

中文翻译：

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稀土镁合金旋转挤压变形行为及组织演变

摘要 旋转挤压是一种生产应变很大、质地较弱的工件的技术。在这项工作中，研究了旋转挤压镁合金的变形行为和微观结构演变。结果表明，旋转挤压的流动应力明显低于直接反向挤压的流动应力。等效应力随着转数的增加而减小。旋转挤压成型的杯形零件呈现出典型的梯度结构，从中心向边缘扩展。样品的基础纹理小于直接反向挤压产生的纹理。此外，随着转数的增加，它进一步减少。