If 500 g of a 40 wt % Ag - 60 wt % Cu alloy is slowly cooled from 1000°C to just below 780°C: (a) How many grams of liquid and proeutectic alpha are present at 850°C? (b) How many grams of liquid and proeutectic alpha are present at 780°C + AT ? (c) How many grams of alpha are present in the eutectic structure at 780°C - AT ? (d) How many grams of beta are present in the eutectic structure at 780°C - AT ? Atom

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Question-3
If 500 g of a 40 wt % Ag - 60 wt % Cu alloy is slowly cooled from 1000°C to just below 780°C:
(a) How many grams of liquid and proeutectic alpha are present at 850°C?
(b) How many grams of liquid and proeutectic alpha are present at 780°C + AT ?
(c) How many grams of alpha are present in the eutectic structure at 780°C - AT ?
(d) How many grams of beta are present in the eutectic structure at 780°C - AT ?
Atomic percent silver
°C
°F
10
20
30
40
50
60
70
80 90
1100
1084.5
1900
1000
961.93
1700
900
L+a
1600
L+B
800
780
1400
7.9
719
91.2
700
1200
600
a+B
1000
500
850
400
Cu
10
30
40
50
60
70
80
90
Ag
Weight percent silver
20
Transcribed Image Text:Question-3 If 500 g of a 40 wt % Ag - 60 wt % Cu alloy is slowly cooled from 1000°C to just below 780°C: (a) How many grams of liquid and proeutectic alpha are present at 850°C? (b) How many grams of liquid and proeutectic alpha are present at 780°C + AT ? (c) How many grams of alpha are present in the eutectic structure at 780°C - AT ? (d) How many grams of beta are present in the eutectic structure at 780°C - AT ? Atomic percent silver °C °F 10 20 30 40 50 60 70 80 90 1100 1084.5 1900 1000 961.93 1700 900 L+a 1600 L+B 800 780 1400 7.9 719 91.2 700 1200 600 a+B 1000 500 850 400 Cu 10 30 40 50 60 70 80 90 Ag Weight percent silver 20
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