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An alloy of 30 wt % Pb and 70 wt % Sn is slowly cooled from 250°C to 27°C: d) What is the amount and composition of each phase that is present at 183°C - ∆T ? e) What are the amounts of each phase present at room temperature? f) Draw the microstructure 183°C + ∆T and 183°C - ∆T in 2 cm diameter circle.

An alloy of 30 wt % Pb and 70 wt % Sn is slowly cooled from 250°C to 27°C: d) What is the amount and composition of each phase that is present at 183°C - ∆T ? e) What are the amounts of each phase present at room temperature? f) Draw the microstructure 183°C + ∆T and 183°C - ∆T in 2 cm diameter circle.

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
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An alloy of 30 wt % Pb and 70 wt % Sn is slowly cooled from 250°C to 27°C:

d) What is the amount and composition of each phase that is present at 183°C - ∆T ?

e) What are the amounts of each phase present at room temperature?

f) Draw the microstructure 183°C + ∆T and 183°C - ∆T in 2 cm diameter circle.

327 Solidus Liquidus 300- Liquid Liquidus 250 a + liquid Solidus 200 B+ liquid 183 150 Eutectic point Solvus a +B 100 Solvus 50 19.2 40.0 61.9 97.5 50 60 90 100% Sn 10 20 30 40 70 80 100% Weight percent tin Temperature (C)
Transcribed Image Text:327 Solidus Liquidus 300- Liquid Liquidus 250 a + liquid Solidus 200 B+ liquid 183 150 Eutectic point Solvus a +B 100 Solvus 50 19.2 40.0 61.9 97.5 50 60 90 100% Sn 10 20 30 40 70 80 100% Weight percent tin Temperature (C)
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