A generalised framework for modelling anisotropic creep-ageing deformation and strength evolution of 2xxx aluminium alloys

IF 9.4 1区材料科学 Q1 ENGINEERING, MECHANICAL

International Journal of Plasticity Pub Date : 2024-09-07 DOI:10.1016/j.ijplas.2024.104114

Xi Wang , Zhusheng Shi , Jianguo Lin

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引用次数: 0

Abstract

The 2xxx aluminium alloys are extensively applied in the aerospace industry due to their lightweight and balanced performance characteristics. However, a comprehensive method for modelling both the anisotropic creep deformation and strengthening behaviour in creep age forming (CAF) for 2xxx aluminium alloys remains lacking. This paper presents a generalised framework for establishing constitutive models capable of describing the anisotropic creep deformation coupled with the microstructure and material strength evolutions during creep-ageing of both the original and the pre-deformed 2xxx series Al alloys. This framework extends the rolling direction-based material model to anisotropic scenarios at varying angles between the loading and rolling directions, by employing the non-uniform rational B-splines (NURBS). The details about the anisotropic model calibration and numerical simulation implementation are demonstrated. The feasibility of this method was verified by its application to various 2xxx series aluminium alloys with or without pre-deformation, through constitutive modelling and numerical simulation, with satisfactory agreements between prediction and experimental data. For the first time, the proposed framework provides a generalised routine for establishing anisotropic creep-ageing models for various 2xxx aluminium alloys.

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2xxx 铝合金各向异性蠕变时效变形和强度演变建模的通用框架

2xxx 铝合金因其重量轻、性能均衡等特点而被广泛应用于航空航天工业。然而，对于 2xxx 铝合金的各向异性蠕变变形和蠕变时效成形 (CAF) 中的强化行为，仍然缺乏一种全面的建模方法。本文提出了一个通用框架，用于建立能够描述原始和预变形 2xxx 系列铝合金蠕变时效过程中各向异性蠕变变形以及微观结构和材料强度演变的构成模型。该框架通过采用非均匀有理 B-样条曲线（NURBS），将基于轧制方向的材料模型扩展到加载方向和轧制方向之间不同角度的各向异性情况。演示了各向异性模型校准和数值模拟实现的细节。通过构造建模和数值模拟，将该方法应用于有或无预变形的各种 2xxx 系列铝合金，验证了该方法的可行性，并在预测和实验数据之间取得了令人满意的一致。所提出的框架首次为建立各种 2xxx 铝合金的各向异性蠕变时效模型提供了通用方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Plasticity 工程技术-材料科学：综合

CiteScore

15.30

自引率

26.50%

发文量

256

审稿时长

46 days

期刊介绍： International Journal of Plasticity aims to present original research encompassing all facets of plastic deformation, damage, and fracture behavior in both isotropic and anisotropic solids. This includes exploring the thermodynamics of plasticity and fracture, continuum theory, and macroscopic as well as microscopic phenomena. Topics of interest span the plastic behavior of single crystals and polycrystalline metals, ceramics, rocks, soils, composites, nanocrystalline and microelectronics materials, shape memory alloys, ferroelectric ceramics, thin films, and polymers. Additionally, the journal covers plasticity aspects of failure and fracture mechanics. Contributions involving significant experimental, numerical, or theoretical advancements that enhance the understanding of the plastic behavior of solids are particularly valued. Papers addressing the modeling of finite nonlinear elastic deformation, bearing similarities to the modeling of plastic deformation, are also welcomed.