c) The Cu-Zn phase diagram is shown in Figure 2. i) For a sample of composition 40 wt% Zn and 60 wt% Cu at 700°C, determine: (1) (ii) (ii) the relative amounts of both phases present at equilibrium the composition of the a-phase present at equilibrium the composition of the B-phase present at equilibrium ii) For a sample of composition 50 wt% Zn and 50 wt% Cu at 700°C, determine (ii) what phases are present at equilibrium? (ii) what is the composition of each phase? ii) For a 68 wt% Zn-32 wt% Cu alloy, make schematic sketches of the microstructure that would be observed for conditions of very slow cooling at the following temperatures: 1000°C, 760°C, 600°C and 400°C. Label all phases and indicate their approximate compositions. Compasition of Zn 20 40 ED 100 12200 H2000 Liqui 1000 - 1800 1400 1200 600 400 200 400 100 20 COu andun

c) The Cu-Zn phase diagram is shown in Figure 2. i) For a sample of composition 40 wt% Zn and 60 wt% Cu at 700°C, determine: (1) (ii) (ii) the relative amounts of both phases present at equilibrium the composition of the a-phase present at equilibrium the composition of the B-phase present at equilibrium ii) For a sample of composition 50 wt% Zn and 50 wt% Cu at 700°C, determine (ii) what phases are present at equilibrium? (ii) what is the composition of each phase? ii) For a 68 wt% Zn-32 wt% Cu alloy, make schematic sketches of the microstructure that would be observed for conditions of very slow cooling at the following temperatures: 1000°C, 760°C, 600°C and 400°C. Label all phases and indicate their approximate compositions. Compasition of Zn 20 40 ED 100 12200 H2000 Liqui 1000 - 1800 1400 1200 600 400 200 400 100 20 COu andun

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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Question

c)
The Cu-Zn phase diagram is shown in Figure 2.
i)
For a sample of composition 40 wt% Zn and 60 wt% Cu at 700°C, determine:
(1)
(ii)
the composition of the a-phase present at equilibrium
the composition of the B-phase present at equilibrium
(ii)
the relative amounts of both phases present at equilibrium
ii)
(ii)
For a sample of composition 50 wt% Zn and 50 wt% Cu at 700°C, determine
what phases are present at equilibrium?
(ii)
what is the composition of each phase?
ii)
For a 68 wt% Zn-32 wt% Cu alloy, make schematic sketches of the
microstructure that would be observed for conditions of very slow cooling at the
following temperatures: 1000°C, 760°C, 600°C and 400°C. Label all phases
and indicate their approximate compositions.
Compostion (2: In
20
40
60
100
12200
H2000
1000
1800
H1600
400
1200
600
400
600
200
400
100
20
40
60
Conporiton twt% Zro

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