Effects of Shoulder Profile on Corner Joints Formation Welded by Stationary Shoulder Friction Stir Welding for High Strength Aluminum

XIA Peiyun; YIN Yuhuan; DONG Jiyi; Lü Hongya; WANG Chunming; ZHAO Huihui; FENG Xiaosong

doi:10.16080/j.issn1671-833x.2021.13.096

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Effects of Shoulder Profile on Corner Joints Formation Welded by Stationary Shoulder Friction Stir Welding for High Strength Aluminum

更新时间：2025-10-30

- Effects of Shoulder Profile on Corner Joints Formation Welded by Stationary Shoulder Friction Stir Welding for High Strength Aluminum
- Aeronautical Manufacturing Technology Vol. 64, Issue 13, Pages: 96-101(2021)
- 作者机构：
  
  1. 华中科技大学,武汉,430074
  2. 上海航天设备制造总厂有限公司,上海,200245
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2021.13.096
  CLC：
- Published：2021
- 稿件说明：
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夏佩云，尹玉环，董吉义，吕红亚，王春明，赵慧慧，封小松. 轴肩型面对角接接头静轴肩搅拌摩擦焊缝成形的影响[J]. 航空制造技术, 2021, 64(13): 96-101.

XIA Peiyun, YIN Yuhuan,DONG Jiyi,Lü Hongya,WANG Chunming,ZHAO Huihui,FENG Xiaosong. Effects of Shoulder Profile on Corner Joints Formation Welded by Stationary Shoulder Friction Stir Welding for High Strength Aluminum. Aeronautical Manufacturing Technology, 2021, 64(13): 96-101.
夏佩云，尹玉环，董吉义，吕红亚，王春明，赵慧慧，封小松. 轴肩型面对角接接头静轴肩搅拌摩擦焊缝成形的影响[J]. 航空制造技术, 2021, 64(13): 96-101. DOI： 10.16080/j.issn1671-833x.2021.13.096.

XIA Peiyun, YIN Yuhuan,DONG Jiyi,Lü Hongya,WANG Chunming,ZHAO Huihui,FENG Xiaosong. Effects of Shoulder Profile on Corner Joints Formation Welded by Stationary Shoulder Friction Stir Welding for High Strength Aluminum. Aeronautical Manufacturing Technology, 2021, 64(13): 96-101. DOI： 10.16080/j.issn1671-833x.2021.13.096.

摘要

设计了钝角与圆角两种型面的静轴肩搅拌工具，通过采用 7A52 与 7B52 异种材料进行试验，分析两种搅拌工具作用下焊缝成形和材料流动特点，进而分析对不同焊接参数（焊接转速、焊接速度、压入量）对焊缝成形的影响。结果表明，前进侧材料向下流动在顶部形成瞬时空腔，圆角型面轴肩有利于焊缝顶部材料补给前进侧的空腔，在极小压入量 0.05mm、焊接转速1000r/mm、焊接速度100~200mm/min 范围内均可获得表面光洁、无缺陷的接头；钝角型面轴肩由于不利于补给前进侧的空腔，在前进侧顶部与顶角位置产生缺陷，即使改变工艺参数也无法消除顶角缺陷。

Abstract

Two kinds of stationary shoulder were designed to analyze corner joints formation and material flow characteristics

using 7A52 and 7B52 dissimilar materials

and then the effects of process parameters (rotation speed

welding speed and plunge depth) on weld formation were also analyzed. The results show that an instantaneous cavity at the top is formed owing to material flowing downward in advancing side

and if the cavity cannot be filled by material in time

the top corner defects will occur. The round corner shoulder has advantages to promote material flowing from top corner to advancing side to fill the cavity. The joints with smooth surface and no defect were obtained even if the plunge depth is 0.05mm

when rotating speed at 1000 r/min and welding speed at 100-200mm/min. Top corner defects are easily produced in joints welded by sharp corner stationary shoulder friction stir welding (SSFSW)

because there are not enough material to fill the cavity on the top of advancing side

even if the process parameters are changed.

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