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首页> 外文期刊>Journal of Materials Engineering and Performance >Modeling of AA5083 Material-Microstructure Evolution During Butt Friction-Stir Welding
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Modeling of AA5083 Material-Microstructure Evolution During Butt Friction-Stir Welding

机译：对接搅拌摩擦焊接中AA5083材料-组织演变的建模

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摘要

A concise yet a fairly comprehensive overview of the friction stir welding (FSW) process is provided. This is followed by a computational investigation in which FSW behavior of a prototypical solution-strengthened and strain-hardened aluminum alloy, AA5083-H131, is modeled using a fully coupled thermo-mechanical finite-element procedure developed in our prior study. Particular attention is given to proper modeling of the welding work-piece material behavior during the FSW process. Specifically, competition and interactions between plastic-deformation and dynamic-recrystallization processes are considered to properly account for the material-microstructure evolution in the weld nugget zone. The results showed that with proper modeling of the material behavior under high-temperature/severe-plastic-deformation conditions, significantly improved agreement can be attained between the computed and measured post-FSW residual-stress and material-strength distribution results.
机译：提供了摩擦搅拌焊接（FSW）过程的简明而相当全面的概述。然后进行计算研究，其中使用我们先前研究中开发的完全耦合的热机械有限元程序对原型固溶强化和应变硬化铝合金A5083H131的FSW行为进行建模。特别注意在FSW过程中对焊接工件材料行为的正确建模。具体而言，塑性变形和动态再结晶过程之间的竞争和相互作用被认为适当地解释了熔核区域中材料-微观结构的演变。结果表明，通过对高温/严重塑性变形条件下的材料行为进行正确建模，可以在计算和测量后的FSW残余应力与材料强度分布结果之间取得显着改善的一致性。

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