Cold Expansion Strengthening of 7050 Aluminum Alloy Hole: Structure, Residual Stress, and Fatigue Life

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/ijae/volume-2022/4057898/figures/4057898.fig.0012a.svgz" name="4057898.fig.0012a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Extrusion inlet surface</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/ijae/volume-2022/4057898/figures/4057898.fig.0012b.svgz" name="4057898.fig.0012b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Extrusion outlet surface</td></tr></table>

<div>The distribution of tangential residual stress under different squeezing amounts.</div>

International Journal of Aerospace Engineering

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Figure 12

Figure 12: Cold Expansion Strengthening of 7050 Aluminum Alloy Hole: Structure, Residual Stress, and Fatigue Life 