Interpretation:
The amount of tungsten that must be added to the given Nb-W alloy before any solids form at given conditions is to be calculated. Also, the amount of tungsten that must be added to the given Nb-W alloy so that the entire bath is solid at given conditions is to be calculated.
Concept Introduction:
On the temperature-composition graph of an alloy, the curve above which the alloy exists in the liquid phase is the liquidus curve. The temperature at this curve is maximum known as liquidus temperature at which the crystals in the alloy can coexist with its melt in the
Solidus curve is the locus of the temperature on the temperature composition graph of an alloy, beyond which the alloy is completely in solid phase. The temperature at this curve is minimum known as solidus temperature at which the crystals in the alloy can coexist with its melt in the thermodynamic equilibrium.
Percentage of a component in an alloy is calculated as:
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