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Optimal FSW process parameters for aluminum alloys AA5083

机译:铝合金AA5083的最佳FSW工艺参数

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摘要

Friction stir welding (FSW) can produce superior mechanical properties in the weld zone. The purpose of this article is to find the optimum FSW process operating conditions for two plates of aluminum alloy AA5083 welded in butt joint. In addition to optimizing the performance characteristics, the cost is considered in the optimal FSW process. In the FSW procedure, there are four major controllable four-level factors, i.e. the tool rotation speed, transverse speed (feed rate), tool tilt angle with respect to the workpiece surface, and pin tool length. The uncontrollable factors are the ultimate tensile strength and elongation rate which can be converted to signal-to-noise ratios the larger the better. In order to achieve the aim of robustness in the multiple response process, the gray-based Taguchi method is proposed. A gray relational grade obtained from gray relational analysis is used as the multiple performance characteristic. The resulting optimum process parameters are rotation speed at 1800 rpm, transverse speed at 180 mm/min, tool tilt angle at 1°, and pin tool length at 2.9mm for the best multiple performance characteristics with minimum cost.
机译:搅拌摩擦焊(FSW)可以在焊接区产生出色的机械性能。本文的目的是为两对焊接在对接接头中的AA5083铝合金板找到最佳的FSW工艺操作条件。除了优化性能特征之外,在最佳FSW过程中还要考虑成本。在FSW程序中,有四个主要可控制的四级因素,即刀具旋转速度,横向速度(进给速度),相对于工件表面的刀具倾斜角和销钉刀具长度。不可控制的因素是极限拉伸强度和伸长率,它们可以转换成信噪比,越大越好。为了达到多响应过程鲁棒性的目的,提出了基于灰色的Taguchi方法。通过灰色关联分析获得的灰色关联等级用作多重性能特征。最终的最佳工艺参数是:1800 rpm的转速,180 mm / min的横向速度,1°的工具倾斜角和2.9mm的销钉工具长度,以最低的成本获得最佳的多种性能。

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