Effect of Solidification Rate and Rare Earth Metal Addition on the Microstructural Characteristics and Porosity Formation in A356 Alloy

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/amse/volume-2017/5086418/figures/5086418.fig.0013a.svgz" name="5086418.fig.0013a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>No addition</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/amse/volume-2017/5086418/figures/5086418.fig.0013b.svgz" name="5086418.fig.0013b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>After 100 ppm Sr addition</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/amse/volume-2017/5086418/figures/5086418.fig.0013c.svgz" name="5086418.fig.0013c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>After 1.025% La addition</td></tr><tr class="fig-image" id="d"><td><object data="https://static.hindawi.com/articles/amse/volume-2017/5086418/figures/5086418.fig.0013d.svgz" name="5086418.fig.0013d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>After La + 100 ppm Sr addition</td></tr></table>

<div>Examples of the eutectic Si particles observed in A356 alloy following addition of Sr, La, or Sr + La in samples obtained from the small section (200°C) of the step-like mold casting.</div>

Advances in Materials Science and Engineering

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Figure 13

Figure 13: Effect of Solidification Rate and Rare Earth Metal Addition on the Microstructural Characteristics and Porosity Formation in A356 Alloy 