The diagram below shows a hypothetical phase diagram for the two elements, Labou

Question

The diagram below shows a hypothetical phase diagram for the two elements, Labourium (Lb) and Torium (To). Sketch the likely cooling curves that would be observed for the following alloy compositions: Pure To To, 10%Lb To. 40%Lb To. 50%Lb For the same alloy, state the names of the phases present and calculate, using the lever rule, the relative amounts of these present at the following temperatures: Just above the eutectic temperature (ans. alpha = 50%, L = 50%) Just after solidification is complete (ans. alpha = 80%, beta= 20%) At room temperature (ie zero), (ans. alpha = 71.4%, beta = 28.6%)

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