Author
Bajilane, Isam Jabbar Ibrahim, Yapıcı, Güney Güven
Publication Date
2018-10
Publication Place
-
Elsevier
Subject
Friction stir spot welding, Dissimilar joining, Keyhole, Lap shear strength, Refill, Aluminum
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1526-6125
Record ID
7072da68-154a-40a8-a404-c3eff6205a46
Library Location
Mechanical Engineering
Date
2018-10
Notes
Ozyegin University
Sample Text
Intermediate layer friction stir spot welding (IL-FSSW) is introduced in this study as a novel spot welding technique to eliminate the keyhole associated with the conventional friction stir spot welding (FSSW). This process is utilized for fabricating a joint of 6061-T6 and 2024-T3 aluminum alloys. The welding process is based on preventing the keyhole occurrence owing to the addition of an intermediate layer (IL), rendering additional post-treatments unnecessary. Results indicated a decent joint appearance without a keyhole along with improved mechanical performance yielding a lap shear force over 4.5 kN. The microstructure of the weld cross-section indicated that the IL contributed to the nugget zone and revealed its influence on the formation of a hooked structure. The fracture surface showed ductile features within the IL boundary, whereas mixed failure was prevalent outside it.
DOI
10.1016/j.jmapro.2018.08.018
Cilt
35
