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A multiscale simulation framework of the accumulative roll bonding process accounting for texture evolution

机译：考虑纹理演化的累积辊压粘合过程的多尺度仿真框架

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摘要

The accumulative roll bonding process is one of the most prominent severe plastic deformation processes for obtaining sheet materials with ultra-fine-grained microstructures and high strength. The properties of such sheets differ significantly from those of conventionally rolled sheets. It is hence desirable to have a simulation framework that can accurately predict the material properties, including the evolving texture and anisotropy during processing. Here, we propose such a framework for multiple pass rolling using explicit finite elements and embedding the visco-plastic self-consistent (VPSC) polycrystal texture model for the material response. To facilitate multiple pass rolling, we propose a novel solution mapping scheme that transfers the material state from the deformed finite element mesh to a new one. Additionally, we implement a two-level parallelization scheme - with decomposition of the FE domain using message passing interface (MPI) and thread based parallelization of the material response using openMP - to ensure reduced simulation times. The predictive capabilities of the proposed framework are demonstrated by simulating the accumulative roll bonding of aluminum alloy AA5754 sheets. The simulations validate the working of the solution mapping scheme, and clearly show the development of a through thickness gradient of texture and anisotropy in the roll-bonded sheet after two passes.
机译：累积辊压粘合工艺是获得具有超细晶粒组织和高强度板材的最突出的严重塑性变形工艺之一。这样的片材的性质与常规的轧制片材的性质显着不同。因此，期望有一种能够准确预测材料特性的仿真框架，包括加工过程中不断演变的织构和各向异性。在这里，我们提出了一个使用显式有限元进行多道次轧制并为材料响应嵌入粘塑性自洽（VPSC）多晶织构模型的框架。为了促进多道次轧制，我们提出了一种新颖的解映射方案，该方案将材料状态从变形的有限元网格转移到新的网格。此外，我们实现了两级并行化方案-使用消息传递接口（MPI）对FE域进行分解，并使用openMP对材料响应进行基于线程的并行化-以确保减少仿真时间。通过模拟铝合金AA5754板材的累积辊压粘合，证明了所提出框架的预测能力。这些仿真验证了溶液映射方案的工作，并清楚地显示了经过两次通过后，胶粘层和各向异性各向异性的贯穿厚度梯度的发展。

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  • 来源
    《Materials Science and Engineering》 |2015年第17期|104-119|共16页
  • 作者

    A. Prakash; W.G. Noehring; R.A. Lebensohn; H.W. Hoeppel; E. Bitzek;

  • 作者单位

    Department of Materials Science and Engineering, Institute I, Friedrich-Alexander-Universitaet Erlangen-Nuernberg (FAU), 91058 Erlangen, Germany;

    Department of Materials Science and Engineering, Institute I, Friedrich-Alexander-Universitaet Erlangen-Nuernberg (FAU), 91058 Erlangen, Germany,Elite Master's Programme in Advanced Materials and Processes (MAP), Friedrich-Alexander-Universitaet Erlangen-Nuernberg (FAU), 91058 Erlangen, Germany,Laboratory for Multiscale Mechanics Modeling, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland;

    Los Alamos National Laboratory, Los Alamos, NM 87545, USA;

    Department of Materials Science and Engineering, Institute I, Friedrich-Alexander-Universitaet Erlangen-Nuernberg (FAU), 91058 Erlangen, Germany;

    Department of Materials Science and Engineering, Institute I, Friedrich-Alexander-Universitaet Erlangen-Nuernberg (FAU), 91058 Erlangen, Germany;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Accumulative roll bonding (ARB); Visco plastic self-consistent (VPSC); Multiple pass rolling; Solution variables mapping; Finite element (FE) multi-level; parallelization; Ultra-fine-grained (UFG) aluminum;

    机译：累积辊压粘合（ARB）;粘胶自粘（VPSC）;多道次轧制;解决方案变量映射;有限元（FE）多级;并行化超细颗粒（UFG）铝;

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