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首页> 外文期刊>Journal of Materials Engineering and Performance >Dynamic Recrystallization and Metal Flow Behavior of AZ31 Magnesium Alloy Bending Products Processed by Staggered Extrusion
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Dynamic Recrystallization and Metal Flow Behavior of AZ31 Magnesium Alloy Bending Products Processed by Staggered Extrusion

机译：AZ31镁合金弯曲产品的动态再结晶和金属流动行为用交错挤压加工

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摘要

Traditional curved products are obtained in two steps, which consist of an extrusion process and a bending process. There are many bottlenecks to this, such as long processing cycle, low efficiency, and difficulty in controlling the product quality. In this paper, a new staggered extrusion (SE) process was proposed to obtain magnesium alloy bending products. Bending products can be extruded by a staggered punch which has a step-like structure at one end. The experimental results show that with increased staggered distance (h) of the punch, the bending height of the bending products increased significantly. Compared with traditional extrusion, the grains of the bending products obtained by SE are refined. The increase in h is one of the reasons for the asymmetric distribution of axial velocity at the die exit of AZ31 magnesium alloy bending products. The asymmetric distribution of the flow velocity field of bending products during SE is one of the contributors for the bending characteristics to the bending products. The SE enables the use of extrusion in many applicable fields and enriches the types of bending products.
机译：传统的弯曲产品分为两个步骤，该步骤由挤出工艺和弯曲过程组成。这有许多瓶颈，如长的加工周期，效率低，难以控制产品质量。本文提出了一种新的交错挤出（SE）方法，得到镁合金弯曲产品。弯曲产品可以通过交错的冲头挤出，在一端具有阶梯状结构。实验结果表明，随着冲头的交错距离（H）增加，弯曲产品的弯曲高度显着增加。与传统挤出相比，通过SE获得的弯曲产物的晶粒精制。 H的增加是AZ31镁合金弯曲产物的模具出口处轴向速度不对称分布的原因之一。 SE期间弯曲产品的流速场的不对称分布是弯曲产品的弯曲特性的贡献者之一。 SE使得能够在许多适用的领域中使用挤出，并丰富弯曲产品的类型。

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