Numerical optimisation of laser assisted friction stir welding of structural steel
Numerical optimisation of laser assisted friction stir welding of structural steel
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DOI：
10.1080/13621718.2019.1570682
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发表时间：
2019-01-01
影响因子：
3.3
通讯作者：
Toumpis, Athanasios
中科院分区：
文献类型：
--
作者：
Ahmad, Bilal;Galloway, Alexander;Toumpis, Athanasios
铝合金搅拌摩擦焊在工业上的应用取得了重大进展。然而，钢的FSW和其他高温合金仍然是相当多的研究课题，主要是因为FSW工具的寿命短，成本高。不同的辅助能量被认为是优化FSW过程和减少工具在插入和横移阶段受力的一种手段，但对钢的数值研究特别有限。建立在最先进的基础上，激光辅助钢FSW作为一种可行的工艺修正进行了数值开发和分析。激光辅助FSW将横移速度提高到1500mm min(-1)，显著高于传统的钢制FSW。与标准FSW相比，在距离旋转工具20mm处应用激光辅助，可将工具探头尖端的反作用力降低55%。
Significant progress has been made on the implementation of friction stir welding (FSW) in the industry for aluminium alloys. However, steel FSW and other high-temperature alloys is still the subject of considerable research, mainly because of the short life and high cost of the FSW tool. Different auxiliary energies have been considered as a means of optimising the FSW process and reducing the forces on the tool during the plunge and traverse stages, but numerical studies on steel are particularly limited. Building on the state-of-art, laser-assisted steel FSW has been numerically developed and analysed as a viable process amendment. Laser-assisted FSW increased the traverse speed up to 1500mm min(-1), significantly higher than conventional steel FSW. The application of laser assistance with a distance of 20mmfrom the rotating tool reduced the reaction force on the tool probe tip up to 55% when compared to standard FSW.