Finite element modelling of transient behaviours and microstructural evolution during dissimilar rotary friction welding of 316 austenitic stainless steel to A516 ferritic steel

IF 3.8 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Advanced Joining Processes Pub Date : 2023-11-01 DOI:10.1016/j.jajp.2023.100167

Amborish Banerjee, Laurie da Silva, Salaheddin Rahimi

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引用次数: 0

Abstract

Inertia friction welding (IFW) is a near-net-shape joining process that produces high-integrity welds. The transient nature of this joining process necessitates the availability of reliable computational models to predict the evolution of temperature and deformation throughout welding. In this study, a thermo-mechanical finite element (FE) model, based on an adaptive remeshing technique, is proposed to simulate dissimilar joining of A516 ferritic steel and 316L austenitic stainless steel (SS). The results of FE model were evaluated and verified via comparing the shape/size of the flash, upsetting load and angular velocity profile of a physical weld produced by IFW trials. A good agreement was achieved between the appearance of the weld/flash and those predicted by the FE model, thus verifying the predicted temperature and strain distributions. The microstructural features across different weld regimes were also examined to correlate the concomitant changes with the simulated temperature profile.

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316奥氏体不锈钢与A516铁素体钢异种旋转摩擦焊接瞬态行为及组织演变的有限元模拟

惯性摩擦焊(IFW)是一种产生高完整性焊缝的近净形连接工艺。这种连接过程的瞬态特性需要可靠的计算模型来预测整个焊接过程中温度和变形的演变。本文基于自适应网格划分技术，建立了A516铁素体钢与316L奥氏体不锈钢不同连接方式的热-机械有限元模型。通过比较闪电的形状/尺寸、镦粗载荷和IFW试验产生的物理焊缝的角速度分布，对有限元模型的结果进行了评估和验证。焊缝/闪光的形貌与有限元模型预测的吻合较好，从而验证了预测的温度和应变分布。还检查了不同焊接制度的显微组织特征，以将伴随变化与模拟温度分布相关联。

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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