anoy ) What phases are present for this alloy at 50°C? ) How much of each phase is present at 50°C? ) What is the primary phase and its amount for this alloy at 50°C? Composition (at% Sn) 20 40 60 80 100 327°C 600 300 Liquid 500 232°C a + L 200 B+L 400 183°C B 97.8 18.3 61.9 300 100 a + B 200 100 20 40 60 80 100 (Pb) Composition (wt% Sn) (Sn) Temperature (°C)

anoy ) What phases are present for this alloy at 50°C? ) How much of each phase is present at 50°C? ) What is the primary phase and its amount for this alloy at 50°C? Composition (at% Sn) 20 40 60 80 100 327°C 600 300 Liquid 500 232°C a + L 200 B+L 400 183°C B 97.8 18.3 61.9 300 100 a + B 200 100 20 40 60 80 100 (Pb) Composition (wt% Sn) (Sn) Temperature (°C)

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

A Pb-30% Sn alloy is cooled from 300°C to 50°C.
a) What phases are present for this alloy at 50°C?
b) How much of each phase is present at 50°C?
c) What is the primary phase and its amount for this alloy at 50°C?
Composition (at% Sn)
20
40
60
80
100
327°C
600
300
Liquid
500
232°C
a + L
200
ß + L
400
183°C
18.3
61.9
97.8
300
100
a + B
200
100
40
60
80
100
(Pb)
Composition (wt% Sn)
(Sn)
Temperature (°C)
20
Temperature (°F)

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