China Mechanical Engineering ›› 2021, Vol. 32 ›› Issue (07): 815-820.

### Welding Joint Performance of Inclined Stationary Shoulder Friction Stir Welding for Aluminum Alloy Sections

FANG Yuanfang1, 2;ZHANG Hua1

1. 1.Beijing Key Laboratory of Opto-mechatronic Equipment Technology,Beijing Institute of Petrochemical Technology,Beijing，102617
2.Beijing Academy of Safety Engineering and Technology,Beijing，102617
• Online:2021-04-10 Published:2021-04-16

### 铝合金型材的静轴肩倾斜搅拌摩擦焊接头性能

1. 1.北京石油化工学院光机电装备技术北京市重点实验室，北京，102617
2.北京市安全生产工程技术研究院，北京，102617
• 作者简介:方远方，男，1984年出生，博士、高级工程师。研究方向为金属材料、搅拌摩擦焊。发表论文10余篇。E-mail：fangyuanfang2000@163.com。
• 基金资助:
国家自然科学基金（51774047）；
北京市长城学者培养计划（CIT&TCD20170309）

Abstract: 6005A commercial aluminum alloy was welded by a FSW device with stationary shoulder. After welding, stretching and bending characteristics of joints were tested, and the cross sectional structures of welds and tensile fracture cross-sections were observed. The results show that surfaces of stationary shoulder FSW are smooth without arc grain; grooves of weld surfaces are disappeared by inclined stationary shoulder FSW. When weld speed is as 1 m/min and rotational speed is as 2100 r/min, the tensile strength of joints is as 73% that of parent metal, and yield strength of joints is as 55% that of parent metal. At the rotational speed of 1700 r/min and 1800r/min, cracks appear in back bending specimen, and the cracks disappear with the increase of rotational speed. S curves appear in cross sections of welds, and the fracture mechanism of the specimen is ductile fracture. With the increase of rotating speed, the degree of tissue refinement and degree of distribution both increase.

CLC Number: