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Review of microstructure and micromechanism-based constitutive modeling of polycrystals with a low-symmetry crystal structure

机译:低对称晶体结构的多晶体的微观结构和基于微力学的本构模型综述

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摘要

Predictions of the mechanical response of polycrystalline metals and underlying microstructure evolution and deformation mechanisms are critically important for the manufacturing and design of metallic components, especially those made of new advanced metals that aim to outperform those in use today. In this review article, recent advancements in modeling deformation processing-microstructure evolution and in microstructure-property relationships of polycrystalline metals are covered. While some notable examples will use standard crystal plasticity models, such as self-consistent and Taylor-type models, the emphasis is placed on more advanced full-field models such as crystal plasticity finite elements and Green's function-based models. These models allow for nonhomogeneity in the mechanical fields leading to greater insight and predictive capability at the mesoscale. Despite the strides made, it still remains a mesoscale modeling challenge to incorporate in the same model the role of influential microstructural features and the dynamics of underlying mechanisms. The article ends with recommendations for improvements in computational speed.
机译:对多晶金属的机械响应以及潜在的微观结构演变和变形机理的预测对于金属部件的制造和设计至关重要,特别是那些旨在超越​​当今使用的新型先进金属制成的部件。在这篇综述文章中,涵盖了在变形加工-微观结构演变以及多晶金属的微观结构-性质关系建模方面的最新进展。尽管一些著名的示例将使用标准的晶体可塑性模型,例如自洽模型和泰勒模型,但重点是更高级的全场模型,例如晶体可塑性有限元模型和基于格林函数的模型。这些模型允许在机械领域实现非均质性,从而在中尺度上获得更大的洞察力和预测能力。尽管取得了长足的进步,但在同一个模型中纳入影响性微结构特征的作用和潜在机制的动力学仍然是中尺度建模的挑战。本文最后提出了提高计算速度的建议。

著录项

  • 来源
    《Journal of Materials Research》 |2018年第22期|3711-3738|共28页
  • 作者单位

    Univ Calif Santa Barbara, Mat Dept, Mech Engn Dept, Santa Barbara, CA 93106 USA;

    Univ New Hampshire, Dept Mech Engn, Durham, NH 03824 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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