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

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">As received</td><td class="align_center">Ultimate strength (MPa)</td><td class="align_center">Yield strength (MPa)</td><td class="align_center">Modulus of elasticity (GPa)</td><td class="align_center">Poisson’s ratio</td><td class="align_center">Elongation (%)</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">T651</td><td class="align_center">486</td><td class="align_center">453</td><td class="align_center">72</td><td class="align_center">0.33</td><td class="align_center">13.9</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Mechanical properties of the 7075-T651 aluminum alloy.

Advances in Materials Science and Engineering

tab2

Table 2

Table 2: Very High Cycle Fatigue Crack Initiation Mechanism in Nugget Zone of AA 7075 Friction Stir Welded Joint 