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Question

# Consider the Al-Si phase diagram. What are the percentages of the $\alpha$-phase and liquid for an Al-$5$ wt $\%$ Si alloy at $620$ , $600$ , and $578$ $^{\circ} \mathrm{C}$ ? What are the percentages of $\alpha$ and $\beta$ phases in this alloy for an Al-$5$ wt $\%$ Si alloy at $576$ and $550$ $^{\circ} \mathrm{C}$ ?

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Introduction

Relative amounts of phases present in the phase diagram for regions where binary phase exists are determined using the inverse lever law. A tie-line is drawn over the temperature that the material is analyzed and the relative lengths of the line determine the amount of phases present.

In this problem, we need to determine the composition and relative amounts of phases formed for an aluminum-silicon system

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