Very High Cycle Fatigue Crack Initiation Mechanism in Nugget Zone of AA 7075 Friction Stir Welded Joint

<div>The design of the ultrasonic fatigue specimen in this test. (a) Schematic diagram of specimen sectioning; (b) dimensions of the ultrasonic fatigue specimen.</div>

Advances in Materials Science and Engineering

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Figure 1

Figure 1: Very High Cycle Fatigue Crack Initiation Mechanism in Nugget Zone of AA 7075 Friction Stir Welded Joint 