Answered: PHASE DIAGRAMS CALCULATIONS THERE IS…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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PHASE DIAGRAMS CALCULATIONS

THERE IS NO BETA PHASE (THEORETICAL DIAGRAM ATTACHED BELOW)

Please explain answers for each part of question.

i) What is the point X on the diagram called?

ii) What is the composition of the alloy at this point?

iii) What is the name given to the line Y?

iv) What is the melting point of pure B?

v) What is the maximum solubility of α in the β phase?

vi) An alloy with a composition of 76 wt% A is a liquid at 350 °C. At which temperature will solid begin to form and at which temperature will it become completely solid?

vii) For a 70 wt% A alloy determine the composition of the solid and liquid phases at 200 °C?

viii) Considering the same alloy composition calculate the phase fraction of the solid and liquid phases at the same temperature.

(a) A theoretical phase diagram is presented in Figure 3a.
400
Temperature (°C)
300
200
100
0
DO
8
A
a +L
Y
40
60
Composition (wt% B)
Figure 3a. Theoretical phase diagram.
20
X
a + ß
80
B+L
100
B

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