(3) The Figure below is the copper-silver phase diagram. For a 30 wt%Ag-70 wt%Cu alloy at 900 °C, determine: (a) The phases present; (b) The composition of each phase; (c) The relative mass fraction of each phase. (16 marks)
Added by Joseph J.
Close
Your feedback will help us improve your experience
Sri K and 98 other Chemistry 101 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The figure below is the copper-silver phase diagram. For 30 wt% Ag-70 wt% Cu alloy at 900 °C, determine: - The phases present - The composition of each phase - The relative mass fraction of each phase
Sri K.
The copper-silver phase diagram is shown in FIGURE Q2. a. A copper-silver alloy with a composition of 30 wt% Ag and 70 wt% Cu is cooled down from 1000 °C to 600 °C. Determine at what temperature the first solid nuclei start to appear and at what temperature the alloy is completely solidified. [5 marks] b. Determine the phases present and then calculate the composition and mass fraction of each phase at 700 °C. [10 marks] FIGURE Q2: The copper-silver phase diagram
Adi S.
The copper-silver phase diagram. An alloy containing 85 wt% Ag - 15 wt % Cu is slowly cooled from a temperature of 900 °C. a) Mark the starting point of the cooling process on the diagram. (0.5 points) b) Is the alloy hypo or hypereutectic? c) What is the composition of the first solid particles that form and at what temperature they first form? (1 point) d) What is the chemical composition of the phases present at 780 °C + ΔT? (2 points) e) At 780 °C + ΔT, what is the weight percent of proeutectic β present in the mixture? (2 points) f) What is the chemical composition of the phases present at 780 °C - ΔT? (2 points) g) At 780 °C - ΔT, what is the weight percent of α and β present in the mixture? (2 points)
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD