Material Flow and Its Induced Joint Formation of FSLW Process by X-shaped Reverse-threaded Pin

YU Zhanxing; CHEN Zhengshuo; JI Xinqi; JIN Chen; SONG Qi

doi:10.7512/j.issn.1001-2303.2024.08.04

Welding Virtual Simulation | Views : 0 下载量: 766 CSCD: 0

PDF
Export
Share
Collection
Album

Material Flow and Its Induced Joint Formation of FSLW Process by X-shaped Reverse-threaded Pin
Vol. 54, Issue 8, Pages: 29-35(2024)
Received：23 May 2024，

Published：25 August 2024
DOI： 10.7512/j.issn.1001-2303.2024.08.04
稿件说明：

移动端阅览

余占兴，陈政硕，姬新淇，等.基于X形正反螺纹搅拌针的搅拌摩擦搭接焊材料流动及其影响下的接头成形规律［J］.电焊机，2024，54（8）：29-35. DOI： 10.7512/j.issn.1001-2303.2024.08.04.

YU Zhanxing, CHEN Zhengshuo, JI Xinqi, et al.Material Flow and Its Induced Joint Formation of FSLW Processby X-shaped Reverse-threaded Pin[J].Electric Welding Machine, 2024, 54(8): 29-35. DOI： 10.7512/j.issn.1001-2303.2024.08.04.

摘要

搅拌针大扎入下板是搅拌摩擦搭接焊（FSLW）常见的工艺方法，但向上弯曲的钩状缺陷会减小接头的有效搭接厚度，不利于获得高承载的接头。为实现钩状缺陷向下弯曲，设计了X形正反螺纹搅拌针并进行搅拌摩擦搭接焊过程材料流动行为的数值模拟，进而研究材料流动与接头成形间的关系。结果表明，在X形正反螺纹搅拌针作用下，焊接过程中焊核区下部与上部的材料分别向上与向下流动，在焊核区中间交汇后向沿水平方向流动；当材料交汇形成的材料集聚区位于原始搭接界面上方时，既可实现钩状缺陷的向下弯曲又可获得大宽度的焊核。在转速为800 rpm且焊速为300 mm/min时，2024-T4铝合金搭接焊接头的拉伸强度达到299.6 MPa，其大于已报道的2000系列铝合金接头强度值。

Abstract

Making the pin largely plunge into the lower plate is a common process of friction stir lap welding (FSLW) technology

but the induced hook with an up-bending morphology reduces the effective sheet thickness of the joint

which is not conducive to obtaining the joint with high bearing capacity. In this paper

in order to realize the down-bending morphology of hook

the X-shaped reverse-threaded pin was self-designed. By this pin

the material flow behavior was simulated numerically during FSLW

and the relationship between material flow and joint formation was studied. The results showed that under the driving action of pin

the materials in stir zone (SZ) top and SZ bottom respectively flowed downwards and upwards and then accumulated in the middle of SZ

and these accumulated materials had a flowing trend along the horizontal direction. When the material accumulated zone was located above the original lap interface

the hook bent downward and the SZ width was enlarged. At the rotating velocity of 800 rpm and the welding speed of 300 mm/min

the 2024-T4 aluminum alloys FSLW joint had a 299.6 MPa tensile strength

and this value was greatly higher than the reported tensile strengths of 2000 series aluminum alloys FSLW joint.

关键词

Keywords

references

王善林，柯黎明，邢丽 . 搅拌头形状对焊缝塑化金属流动行为的影响［J］. 南昌航空工业学院学报（自然科学版）， 2005 （ 01 ）： 62 - 66 .

WANG S L ， KE L M ， XING L . The Influence of the Pin Shape on the Flow Behavior of the Plasticized Metal in the Weld During the Friction Stir Welding ［J］. Journal of Nanchang Institute of Aeronautical Technology （Natural Sciences）， 2005 （ 01 ）： 62 - 66 .

Li Z ， Yue Y ， Ji S ， et al . Joint features and mechanical properties of friction stir lap welded alclad 2024 aluminum alloy assisted by external stationary shoulder ［J］. Materials & Design ， 2016 ， 90 ： 238 - 247 .

Liu Z L ， Zhou Z L ， Ji S D . Improving interface morphology and shear failure load of friction stir lap welding by changing material concentrated zone location ［J］. The International Journal of Advanced Manufacturing Technology ， 2018 ， 95 ： 4013 - 4022 .

Yue Y M ， Zhou Z L ， Ji S D ， et al . Improving joint features and tensile shear properties of friction stir lap welded joint by an optimized bottom-half-threaded pin tool ［J］. The International Journal of Advanced Manufacturing Technology ， 2017 ， 90 ： 2597 - 2603 .

Rajendran C ， Srinivasan K ， Balasubramanian V ， et al . Effect of tool tilt angle on strength and microstructural characteristics of friction stir welded lap joints of AA2014-T6 aluminum alloy ［J］. Transactions of Nonferrous Metals Society of China ， 2019 ， 29 （ 9 ）： 1824 - 1835 .

张富亮，徐宁，王宇，等 . 6005A合金搅拌摩擦焊焊接工艺性能研究［J］. 电焊机， 2021 ， 51 （ 07 ）： 62 - 65+116 .

ZHANG F L ， XU N ， WANG Y ， et al . Study on friction stir welding process performance of 6005A alloy ［J］. Electric Welding Machine ， 2021 ， 51 （ 07 ）： 62 - 65+116 .

杜海泉，范翼飞，王一，等 . 搅拌针形貌对2219铝合金搅拌摩擦焊接头性能的影响［J］. 电焊机， 2023 ， 53 （ 05 ）： 77 - 83+94 .

Du H Q ， Fan Y F ， Wang Y ， et al . Effect of Pin Morphology on the Performance of FSW Joint of 2219 Aluminum Alloy ［J］. Electric Welding Machine ， 2023 ， 53 （ 05 ）： 77 - 83+94 .

岳玉梅，韩松，郭芮秀，等 . 基于RBFNN-ACO的铝合金搅拌摩擦搭接焊工艺参数优化［J］. 航空制造技术， 2022 ， 65 （ 21 ）： 54 - 61 .

YUE Y M ， HAN S ， GUO R Z ， et al . Process Parameters optimization of aluminum alloy friction stir lap welding by RBFNN-ACO ［J］. Aeronautical Manufacturing Technology ， 2022 ， 65 （ 21 ）： 54 - 61 .

Aldanondo E ， Vivas J ， Álvarez P ， et al . Effect of tool geometry and welding parameters on friction stir welded lap joint formation with AA2099-T83 and AA2060-T8E30 aluminium alloys ［J］. Metals ， 2020 ， 10 （ 7 ）： 872 .

Han Y ， Jiang X ， Yuan T ， et al . Material flow and microstructure evolution on the flow path of friction stir lap welded aluminum alloy ［J］. Science and Technology of Welding and Joining ， 2023 ， 28 （ 1 ）： 72 - 80 .

王远见，刘坤，许楠，等 . 基于SYSWELD铝合金搅拌摩擦焊数值模拟及试验［J］. 电焊机， 2022 ， 52 （ 07 ）： 1 - 6 .

WANG Y J ， LIU K ， XU N ， et al . SYSWELD Numerical Simulation and Experimental Study on Friction Stir Welded Aluminum Alloy ［J］. Electric Welding Machine ， 2022 ， 52 （ 07 ）： 1 - 6 .

Ambrosio D ， Morisada Y ， Ushioda K ， et al . Material flow in friction stir welding：A review ［J］. Journal of Materials Processing Technology ， 2023 ： 118116 .

Sun Z ， Li Y ， Qi X ， et al . Material Flow and Mechanical Properties of a Non-Keyhole Friction Stir Welded Aluminum Alloy with Improved Sleeve Bottom Geometry ［J］. Metals ， 2022 ， 12 （ 9 ）： 1415 .

Alert me when the article has been cited

提交

Numerical Simulation of Residual Stress and Deformation of FGB Submerged Arc Welded Joints in S355J2G3 Thick Plates for Offshore Wind Power Piles

Research Progress on Forming Efficiency and Process Stability of Laser Powder Bed Fusion for Aviation Metal Components

Research on Crack Criterion based on Simulation Data of Brittle Temperature Zone of 690 Nickel-based Alloy Multilayer Multi-Pass Weld

Numerical Simulation and Experimental Validation of Deformation in Thick Large-sized Structural Stainless Steel SUS304 Electron Beam Welding

Numerical Simulation of Additive Friction Stir Deposition Process for CNT Reinforced Aluminum Matrix Composites