Improving the Weld Formation and Mechanical Properties of the AA-5A06 Friction Pull Plug Welds by Axial Force Control
Jinyong Gao1, Lijun Yang1, Lei Cui1(), Peng Lu1, Jun Yang2, Yanjun Gao2

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Fig.14. Fracture morphology of joints failed with different strengths: a Case 2(c), b Case 2(b), c Case 3(a)