Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 34, Issue 1, Pages 135-139Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2017.11.001
Keywords
Bobbin tool friction stir welding; Dual rotation; Material flow; Microstructure; Microhardness
Funding
- National Natural Science Foundation of China [51705027]
- fund of the State Key Laboratory of Solidification Processing in NWPU [SKLSP201722]
Ask authors/readers for more resources
A novel dual-rotation bobbin tool friction stir welding (DBT-FSW) was developed, in which the upper shoulder (US) and lower shoulder (LS) have different rotational speeds. This process was tried to weld 3.2 mm thick aluminum-lithium alloy sheets. The metallographic analysis and torque measurement were carried out to characterize the weld formability. Experimental results show that compared to conventional bobbin tool friction stir welding, the DBT-FSW has an excellent process stability, and can produce the defect-free joints in a wider range of welding parameters. These can be attributed to the significant improvement of material flow caused by the formation of a staggered layer structure and the unbalanced force between the US and LS during the DBT-FSW process. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available