Abstract The fracture J Integral Model was build on the actual Al-Cu dissimilar materials Friction Stir Welding joint to investigate the microdefects ont properties of the joint. The calculation results showed that the severe stress concentration emerged at the tip of crack in interface, the pack stress could reach up to 379 MPa, which was higher than the strength of the base metal, and resulted in the joint fracture. Further, the x-direction stress was much higher than the y-direction stress. In the J Integral Model, the x-direction stress would lead to the opening fracture and the y-direction stress would lead to the shearing fracture, thus the opening fracture with small shearing fracture was the character of the Al-Cu joint.
Analysis on Al-Cu Dissimilar Materials Friction Stir Welding Butt Joint Based on J Integral Model
2017-01-01
10 pages
Article/Chapter (Book)
Electronic Resource
English
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