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Effect of friction stir welding parameters on the deep drawing of tailor-welded blanks (TWBs)
CIRP Journal of Manufacturing Science and Technology ( IF 4.8 ) Pub Date : 2021-03-19 , DOI: 10.1016/j.cirpj.2021.02.011
Ezatolah Kamalvand , Ali Jabbari , Mohammad Reza Sheykholeslami , Siamak Mazdak , Reza Beygi , Sajad Mohammadi

Friction stir welding is a method for joining dissimilar sheets and producing tailor-welded blanks (TWBs). An important issue in TWBs is their formability, as the material properties is not uniform across the welding line. In this method, the mechanical properties changing is a function of welding parameters such as traverse speed, rotational speed, and the shape of the tool. A common issue is choosing proper friction welding parameters to achieve the appropriate forming properties of the welded blanks. So in this paper, TWBs of AA2024-T3 and AA7075-T6 aluminum were prepared and welded using friction stir welding (FSW) method under various conditions, including three different tool shapes as conical, cylindrical, and square under various traverse speeds and rotational speeds. Tensile tests were carried out in order to obtain the best tensile strength conditions that are acceptable for deep drawing. The deep drawing procedure was simulated by using finite element method (FEM) to investigate the effect of weld line properties on thickness distribution and weld line movement. To verify the simulation results, the best joint was subjected to the deep-drawing process and its thickness distribution and welding line movement were compared with the simulation result. The simulation results revealed that the joint made with circular pin obtain gives the best results in deep drawing in terms of thickness distribution and weld line movement.



中文翻译:

搅拌摩擦焊接参数对拼焊板(TWB)的拉深的影响

搅拌摩擦焊接是一种用于连接异种板材并生产定制焊接的坯料(TWB)的方法。TWB中的一个重要问题是它们的可成型性,因为整个焊接线上的材料性能不均匀。在这种方法中,机械性能的变化是焊接参数(如移动速度,旋转速度和工具形状)的函数。一个普遍的问题是选择适当的摩擦焊接参数以实现焊接毛坯的适当成形性能。因此,在本文中,制备了AA2024-T3和AA7075-T6铝的TWB,并在各种条件下使用搅拌摩擦焊(FSW)方法进行焊接,包括在三种不同的移动速度和转速下,包括圆锥形,圆柱形和方形三种不同的工具形状。 。为了获得可接受的最佳拉伸强度条件,拉伸试验进行了深拉。通过使用有限元方法(FEM)模拟深冲过程,以研究焊缝特性对厚度分布和焊缝运动的影响。为了验证仿真结果,对最佳接头进行了拉深加工,并将其厚度分布和焊缝运动与仿真结果进行了比较。仿真结果表明,在厚度分布和焊缝运动方面,用圆销制成的接头在深冲中能获得最佳效果。通过使用有限元方法(FEM)模拟深冲过程,以研究焊缝特性对厚度分布和焊缝运动的影响。为了验证仿真结果,对最佳接头进行了拉深加工,并将其厚度分布和焊缝运动与仿真结果进行了比较。仿真结果表明,在厚度分布和焊缝运动方面,用圆销制成的接头在深冲中能获得最佳效果。通过使用有限元方法(FEM)模拟深冲过程,以研究焊缝特性对厚度分布和焊缝运动的影响。为了验证仿真结果,对最佳接头进行了拉深加工,并将其厚度分布和焊缝运动与仿真结果进行了比较。仿真结果表明,在厚度分布和焊缝运动方面,用圆销制成的接头在深冲中能获得最佳效果。

更新日期:2021-03-19
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