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Use the phase diagrams for Cu-Ni and Cu-Ag systems below to answer the question: Based on the mechanism, would you expect a solution containing 80 wt% Cu to be stronger if the remaining 20% of the alloy was Ni or Ag? Briefly explain

Use the phase diagrams for Cu-Ni and Cu-Ag systems below to answer the question: Based on the mechanism, would you expect a solution containing 80 wt% Cu to be stronger if the remaining 20% of the alloy was Ni or Ag? Briefly explain

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Use the phase diagrams for Cu-Ni and Cu-Ag systems below to answer the question:

Based on the mechanism, would you expect a solution containing 80 wt% Cu to be stronger if the remaining 20% of the alloy was Ni or Ag? Briefly explain

## Explanation of Phase Diagrams ### Left Diagram: Copper-Nickel (Cu-Ni) Phase Diagram - **Axes**: - X-Axis: Composition (weight percent Nickel, Ni) ranging from 0% to 100% - Y-Axis: Temperature in degrees Celsius, ranging from 1000°C to 1600°C - **Lines**: - **Liquidus Line**: The upper curve connecting the liquid phases. - **Solidus Line**: The lower curve connecting the solid phases. - **Phases**: - Above the liquidus line is the **Liquid** phase. - Between the liquidus and solidus lines is the **α + L (liquid and alpha)** phase, indicating a mixture. - Below the solidus line is the **α (alpha)** phase, which is solid. - **Key Temperatures**: - At the left end (Copper-rich), the melting point is 1085°C. - At the right end (Nickel-rich), the melting point is 1453°C. ### Right Diagram: Silver-Copper (Ag-Cu) Phase Diagram - **Axes**: - X-Axis: Composition (weight percent Silver, Ag) ranging from 0% to 100% - Left Y-Axis: Temperature in degrees Fahrenheit, ranging from 0°F to 2400°F - Right Y-Axis: Temperature in degrees Celsius, ranging from -20°C to 1400°C - **Lines**: - **Liquidus Line**: The upper boundary of the liquid phase. - **Solidus Line**: The line indicating the boundary of the complete solid phase. - **Phases**: - **Liquid**: The region above the liquidus line where the material is completely molten. - **α + L (alpha and liquid)**: Partially molten, with both solid and liquid phases. - **α (alpha)**: Below the solidus line on the left; solid phase rich in copper. - **β (beta)**: Below the solidus line on the right; solid phase rich in silver. - **α + β (alpha and beta)**: Region where both α and β solid phases coexist. - **Key Temperature**: - Eutectic point at 779°C (1434°F), where liquid coexists with solid α
Transcribed Image Text:## Explanation of Phase Diagrams ### Left Diagram: Copper-Nickel (Cu-Ni) Phase Diagram - **Axes**: - X-Axis: Composition (weight percent Nickel, Ni) ranging from 0% to 100% - Y-Axis: Temperature in degrees Celsius, ranging from 1000°C to 1600°C - **Lines**: - **Liquidus Line**: The upper curve connecting the liquid phases. - **Solidus Line**: The lower curve connecting the solid phases. - **Phases**: - Above the liquidus line is the **Liquid** phase. - Between the liquidus and solidus lines is the **α + L (liquid and alpha)** phase, indicating a mixture. - Below the solidus line is the **α (alpha)** phase, which is solid. - **Key Temperatures**: - At the left end (Copper-rich), the melting point is 1085°C. - At the right end (Nickel-rich), the melting point is 1453°C. ### Right Diagram: Silver-Copper (Ag-Cu) Phase Diagram - **Axes**: - X-Axis: Composition (weight percent Silver, Ag) ranging from 0% to 100% - Left Y-Axis: Temperature in degrees Fahrenheit, ranging from 0°F to 2400°F - Right Y-Axis: Temperature in degrees Celsius, ranging from -20°C to 1400°C - **Lines**: - **Liquidus Line**: The upper boundary of the liquid phase. - **Solidus Line**: The line indicating the boundary of the complete solid phase. - **Phases**: - **Liquid**: The region above the liquidus line where the material is completely molten. - **α + L (alpha and liquid)**: Partially molten, with both solid and liquid phases. - **α (alpha)**: Below the solidus line on the left; solid phase rich in copper. - **β (beta)**: Below the solidus line on the right; solid phase rich in silver. - **α + β (alpha and beta)**: Region where both α and β solid phases coexist. - **Key Temperature**: - Eutectic point at 779°C (1434°F), where liquid coexists with solid α
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