See the phase diagram of copper and nickel. Find approximate weight percent of solid phase at 1300C when overall composition is 50% nickel and 50% copper.
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To determine the approximate weight percent of the solid phase at 1300°C for a copper-nickel alloy with 50% nickel and 50% copper, you can follow these steps by using the phase diagram of copper and nickel:

1. **Locate the temperature (1300°C)** on the phase diagram's temperature axis.
2. **Identify the overall composition (50% Ni, 50% Cu)** on the composition axis.
3. **Find the phase boundaries** at this temperature for the given composition. The phase diagram typically consists of liquidus and solidus lines, where the liquidus line indicates the temperature above which the alloy is fully liquid, and the solidus line indicates the temperature below which it is fully solid.
   - At 1300°C, find the corresponding liquidus and solidus lines near the 50% Ni composition.
4. **Apply the lever rule** to estimate the weight percent of the solid phase. The lever rule formula is:

\[
\text{Weight percent of solid phase} = \frac{C_L - C_0}{C_L - C_S} \times 100
\]
Where:
   - \( C_L \) is the composition of the liquid phase at 1300°C.
   - \( C_0 \) is the overall composition (50% Ni).
   - \( C_S \) is the composition of the solid phase at 1300°C.

From the phase diagram, approximate the values for \( C_L \) and \( C_S \) at 1300°C and 50% Ni:

- **Estimate \( C_L \)** (composition of the liquid phase at 1300°C) based on the liquidus line.
- **Estimate \( C_S \)** (composition of the solid phase at 1300°C) based on the solidus line.

The weight percent of the solid phase can be calculated once these values are plugged into the lever rule formula.

Do you have a diagram to upload, or would you like to proceed with an estimate based on typical copper-nickel phase diagrams?

See the phase diagram of copper and nickel. Find approximate weight percent of solid phase at 1300C when overall composition is 50% nickel and 50% copper.

Learn how to determine the weight percent of the solid phase at 1300°C for a copper-nickel alloy with a composition of 50% nickel and 50% copper using the phase diagram and lever rule. This detailed explanation involves phase boundary identification and lever rule application, suitable for undergraduate students in materials science or engineering.

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