Interface behaviours and mechanical properties of filling friction stir weld joining AA 2219

被引：57
|
作者：
Huang, Y. X. [1 ]
Han, B. [1 ]
Lv, S. X. [1 ]
Feng, J. C. [1 ]
Liu, H. J. [1 ]
Leng, J. S. [2 ]
Li, Y. [2 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Peoples R China
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2012年 / 17卷 / 03期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Filling friction stir welding; Aluminium joining bit; Keyhole; Interface; Mechanical; DEFECTS; FATIGUE;
D O I：
10.1179/1362171811Y.0000000100
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present work, 7.8 mm thick AA 2219 rolled plates were successfully joined without keyholes using semiconsumable tools by filling friction stir welding (FFSW). The shoulder further effect was performed to enhance mechanical stir, and mechanical properties were enhanced effectively. The results showed that the bonding interface of AA 2219 bit and keyhole is defect free. The softened region on the advanced side is the weakest part of FFSW joint rather than the bonding interface of the keyhole. The average ultimate tensile strength and elongation are 172 MPa and 11.2%, equal to 90 and 82% of the base weld without defects respectively. Excellent bonding interface and mechanical properties of FFSW joints have been exhibited.
引用
收藏
页码：225 / 230
页数：6
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