An alloy of 30 wt % Pb and 70 wt % Sn is slowly cooled from 250°C to 27°C: a) Is this alloy hypoeutectic or hypereutectic? b) What is the composition of the first solid to form? c) What are the amounts and compositions of each phase that is present at 183°C + ∆T ? 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: a) Is this alloy hypoeutectic or hypereutectic? b) What is the composition of the first solid to form? c) What are the amounts and compositions of each phase that is present at 183°C + ∆T ? 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.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.5P: Evaluate the dimensionless groups hcD/k,UD/, and cp/k for water, n-butyl alcohol, mercury, hydrogen,...

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