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Compute the fraction of Al2Cu intermetallic at a temp of 500 degrees C for an alloy of 10% copper in aluminum, by weight

Compute the fraction of Al2Cu intermetallic at a temp of 500 degrees C for an alloy of 10% copper in aluminum, by weight

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Compute the fraction of Al2Cu intermetallic at a temp of 500 degrees C for an alloy of 10% copper in aluminum, by weight

The image displays a phase diagram for an aluminum-copper alloy system, illustrating the relationship between temperature and copper content in weight percentage (wt%). Here's a detailed explanation: **Axes:** - The vertical axis represents temperature in degrees Celsius (°C), ranging from 200°C to 700°C. - The horizontal axis represents copper content in atomic percentage (at.%), spanning from 0% to 55%. **Key Areas and Lines:** - **Solidus Line:** This curve separates the completely solid region (below the line) from the region where solid and liquid coexist. - **Liquidus Line:** This curve distinguishes the completely liquid region (above the line) from the region where solid and liquid phases coexist. - **Eutectic Temperature Line (548°C):** Represents the lowest temperature at which the liquid phase can exist in equilibrium with two solid phases. **Regions:** - **Aluminum (Al) region:** On the left side, starting at 0% copper. - **Alpha solid solution (Al-rich) region:** Below the solidus line to the left of the diagram. - **Liquid (L) region:** Above the liquidus line, where the mixture is completely liquid. - **Eutectic Point:** The intersection at approximately 548°C where liquid transitions directly to two solid phases. - **Al2Cu Phase:** To the right, where a solid copper-aluminum compound (Al2Cu) forms. **Specific Points:** - At 660.452°C, a nearly pure aluminum solidifies. - At approximately 5.7% copper, the diagram indicates a notable phase change. - At 33.2% copper content, another important compositional change occurs, marking the beginning of a distinct phase. This phase diagram is crucial for understanding the melting, solidification, and phase transformation behaviors of aluminum-copper alloys, which are essential for various engineering and metallurgical applications.
Transcribed Image Text:The image displays a phase diagram for an aluminum-copper alloy system, illustrating the relationship between temperature and copper content in weight percentage (wt%). Here's a detailed explanation: **Axes:** - The vertical axis represents temperature in degrees Celsius (°C), ranging from 200°C to 700°C. - The horizontal axis represents copper content in atomic percentage (at.%), spanning from 0% to 55%. **Key Areas and Lines:** - **Solidus Line:** This curve separates the completely solid region (below the line) from the region where solid and liquid coexist. - **Liquidus Line:** This curve distinguishes the completely liquid region (above the line) from the region where solid and liquid phases coexist. - **Eutectic Temperature Line (548°C):** Represents the lowest temperature at which the liquid phase can exist in equilibrium with two solid phases. **Regions:** - **Aluminum (Al) region:** On the left side, starting at 0% copper. - **Alpha solid solution (Al-rich) region:** Below the solidus line to the left of the diagram. - **Liquid (L) region:** Above the liquidus line, where the mixture is completely liquid. - **Eutectic Point:** The intersection at approximately 548°C where liquid transitions directly to two solid phases. - **Al2Cu Phase:** To the right, where a solid copper-aluminum compound (Al2Cu) forms. **Specific Points:** - At 660.452°C, a nearly pure aluminum solidifies. - At approximately 5.7% copper, the diagram indicates a notable phase change. - At 33.2% copper content, another important compositional change occurs, marking the beginning of a distinct phase. This phase diagram is crucial for understanding the melting, solidification, and phase transformation behaviors of aluminum-copper alloys, which are essential for various engineering and metallurgical applications.
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