Distortion Control and Property Evaluation of In-Situ Rolling Friction Stir Welding Joints of 7075–T6 Aluminum Alloy

MENG Xiangchen; WANG Wei; XIE Yuming; DONG Jihong; XIA Peiyun; HUANG Yongxian

doi:10.16080/j.issn1671-833x.2025.09.014

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Distortion Control and Property Evaluation of In-Situ Rolling Friction Stir Welding Joints of 7075–T6 Aluminum Alloy

更新时间：2026-03-27

- Distortion Control and Property Evaluation of In-Situ Rolling Friction Stir Welding Joints of 7075–T6 Aluminum Alloy
- Aeronautical Manufacturing Technology Vol. 68, Issue 9, Pages: 14-18(2025)
- 作者机构：
  
  1. 哈尔滨工业大学材料结构精密焊接与连接全国重点实验室,哈尔滨,150001
  2. 哈尔滨工业大学郑州研究院,郑州,450046
  3. 中国航空制造技术研究院,北京,100024
  4. 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.2025.09.014
  CLC：
- Published：2025
- 稿件说明：
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孟祥晨，王伟，谢聿铭，董继红，夏佩云，黄永宪. 7075–T6铝合金随焊碾压搅拌摩擦焊接头变形控制和性能评价[J]. 航空制造技术, 2025, 68(9): 14-18.

MENG Xiangchen, WANG Wei, XIE Yuming, DONG Jihong, XIA Peiyun, HUANG Yongxian. Distortion Control and Property Evaluation of In-Situ Rolling Friction Stir Welding Joints of 7075–T6 Aluminum Alloy[J]. Aeronautical Manufacturing Technology, 2025, 68(9): 14-18.
孟祥晨，王伟，谢聿铭，董继红，夏佩云，黄永宪. 7075–T6铝合金随焊碾压搅拌摩擦焊接头变形控制和性能评价[J]. 航空制造技术, 2025, 68(9): 14-18. DOI： 10.16080/j.issn1671-833x.2025.09.014.

MENG Xiangchen, WANG Wei, XIE Yuming, DONG Jihong, XIA Peiyun, HUANG Yongxian. Distortion Control and Property Evaluation of In-Situ Rolling Friction Stir Welding Joints of 7075–T6 Aluminum Alloy[J]. Aeronautical Manufacturing Technology, 2025, 68(9): 14-18. DOI： 10.16080/j.issn1671-833x.2025.09.014.

摘要

为了解决铝合金薄壁结构搅拌摩擦焊变形的问题，提出一种在搅拌摩擦焊接过程中随焊碾压的新方法，研究了随焊碾压对接头的焊接变形、微观组织和力学性能的影响。结果表明，随焊碾压处理消除了焊缝飞边并保证接头优质成形，显著细化了接头表层晶粒尺寸，在接头表面形成了厚约282 μm的梯度结构，提高了接头的表层显微硬度；接头的抗拉强度相比传统搅拌摩擦焊接头提高了3.3%；同时，接头变形挠度相比传统接头降低了84.8%。

Abstract

To address the deformation issue in friction stir welding (FSW) of aluminum alloy thin-walled structures

a novel method of in-situ rolling friction stir welding (IRFSW) is proposed. The effects of IRFSW on the welding distortion

microstructure and mechanical properties are studied. The results show that the IRFSW can eliminate the flash and ensure the high-quality forming of the joint. The surface grain size of IRFSW joint was obviously refined and a gradient structure with a thickness of about 282 μm was formed on the surface of the IRFSW joint. The surface microhardness of the joint was improved by grain refinement. The tensile strength of the IRFSW joint was 3.3% higher than that of conventional FSW joint. In addition

the distortion degree of IRFSW joint was reduced by 84.8% compared with conventional FSW joint.

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