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Consider the hypothetical eutectic phase diagram for metals A and B, which is similar to that for the lead-tin system, (shown in the figure below.) Assume that (1) a and ß phases exist at the A and B extremities of the phase diagram, respectively; (2) the eutectic composition is 36 wt% A-64 wt% B; and (3) the composition of the a phase at the eutectic temperature is 88 wt% A-12 wt% B. Determine the composition of an alloy that will yield primary ß and total ß mass fractions of 0.376 and 0.779, respectively. Composition (at% Sn) 20 40 60 80 100 327°C 600 300 Liquid 500 232°C a + L 200F 400 a 183°C B + L 18.3 61.9 97.8 300 100 a + B 200 100 20 40 60 80 100 (Pb) Composition (wt% Sn) (Sn) i wt% B Temperature (°C) Temperature (F)

Consider the hypothetical eutectic phase diagram for metals A and B, which is similar to that for the lead-tin system, (shown in the figure below.) Assume that (1) a and ß phases exist at the A and B extremities of the phase diagram, respectively; (2) the eutectic composition is 36 wt% A-64 wt% B; and (3) the composition of the a phase at the eutectic temperature is 88 wt% A-12 wt% B. Determine the composition of an alloy that will yield primary ß and total ß mass fractions of 0.376 and 0.779, respectively. Composition (at% Sn) 20 40 60 80 100 327°C 600 300 Liquid 500 232°C a + L 200F 400 a 183°C B + L 18.3 61.9 97.8 300 100 a + B 200 100 20 40 60 80 100 (Pb) Composition (wt% Sn) (Sn) i wt% B Temperature (°C) Temperature (F)

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Consider the hypothetical eutectic phase diagram for metals A and B, which is similar to that for the lead-tin system, (shown in the figure below.) Assume that (1) a and ß phases exist at the A and Bextremities of the phase diagram, respectively; (2) the eutectic composition is 36 wt% A-64 wt% B; and (3) the composition of the a phase at the eutectic temperature is 88 wt% A-12 wt% B. Determine the composition of an alloy that will yield primaryß and total B mass fractions of 0.376 and 0.779, respectively. Composition (at% Sn) 20 40 60 80 100 327°C 600 300 Liquid 500 232°C a + L 200 B +L 400 183°C 18.3 61.9 97.8 300 100 a + B 200 100 20 40 60 80 100 (Pb) Composition (wt% Sn) (Sn) wt% B Temperature (°C) Temperature (F)
Transcribed Image Text:Consider the hypothetical eutectic phase diagram for metals A and B, which is similar to that for the lead-tin system, (shown in the figure below.) Assume that (1) a and ß phases exist at the A and Bextremities of the phase diagram, respectively; (2) the eutectic composition is 36 wt% A-64 wt% B; and (3) the composition of the a phase at the eutectic temperature is 88 wt% A-12 wt% B. Determine the composition of an alloy that will yield primaryß and total B mass fractions of 0.376 and 0.779, respectively. Composition (at% Sn) 20 40 60 80 100 327°C 600 300 Liquid 500 232°C a + L 200 B +L 400 183°C 18.3 61.9 97.8 300 100 a + B 200 100 20 40 60 80 100 (Pb) Composition (wt% Sn) (Sn) wt% B Temperature (°C) Temperature (F)
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