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首页> 外文期刊>Journal of Materials Engineering and Performance >Finite Element Analysis of the Deformation Distribution During Multi-Pass Rotary-Die ECAP
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Finite Element Analysis of the Deformation Distribution During Multi-Pass Rotary-Die ECAP

机译：ECAP多道次旋转模头变形分布的有限元分析

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摘要

Rotary-die equal channel angular pressing (RD-ECAP) is a specially designed continuous processing technique to prepare bulk ultrafine-grainedanostructure (UFG/NS) materials. In this article, an Al-7wt.% Si-0.35wt.% Mg alloy was processed by up to four RD-ECAP passes. The deformation behavior was studied by experiments and FEM simulation, including the observation of the scribed deformation patterns, the macrostructures, the simulated flow lines feature, and the equivalent stain distribution after different RD-ECAP passes. The results show that the shear deformation can accumulate effectively all over the entire billet via multi-pass RD-ECAP. The observed zigzag shape metal flow is formed after three ECAP passes, and the structure homogeneity can be achieved by RD-ECAP with more processing passes.
机译：旋转模等通道角挤压（RD-ECAP）是专门设计的连续加工技术，用于制备块状超细晶粒/纳米结构（UFG / NS）材料。在本文中，通过最多四次RD-ECAP道次处理了Al-7wt。％Si-0.35wt。％Mg合金。通过实验和有限元模拟研究了变形行为，包括观察划痕的变形模式，宏观结构，模拟的流线特征以及不同的RD-ECAP通过后的等效污渍分布。结果表明，通过多道次RD-ECAP，剪切变形可以有效地累积在整个坯料上。观察到的锯齿形金属流是在3次ECAP通过之后形成的，通过RD-ECAP进行更多次处理可以实现结构的均匀性。

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