Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 8.15, Problem 9KCP
To determine
The four Hume-Rothery rules for the solid solubility of one element in another.
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For alloy of two hypothetical metals A and B, there exist an a, A-rich phase and a
B, B-rich phase. For alloys of two different overall compositions at 25°C, the weight fractions of Wa and
WB are listed in the table. Determine the solubility limits for both a and B phases at 25°C.
Alloy Composition
Wa
WB
70wt% A-30wt% B
0.78
0.22
35wt% A-65wt% B
0.36
0.64
In a binary Fe-Fe3C system, what is a transformation that occurs when cooling an austenistic mixture of 2% C by weight from 1100°C to below the eutectoid temperature?
What is the microstructure, and how is it formed?
What are the total and partial phases?
Given:Eutectoid temperature=723°C; Eutectoid concentration=0.76% C; Limit concentration of ferrite=0.022%; Limiting concentration of cementite: 6.7%.
For alloys of two hypothetical metals A and B, there exists an a, A-rich phase and a b, B-rich phase. From the mass fractions of both phases for two different alloys (given below), which are at the same temperature, determine the composition of the phase boundary (or solubility limit) for the following:
Alloy composition
Fraction a Phase
Fraction b Phase
60wt%A-40wt%B
0.60
0.40
30wt%A-70wt%B
0.12
0.88
a) a Phase = ___________ wt%A
b) b Phase = ___________ wt%A
Chapter 8 Solutions
Foundations of Materials Science and Engineering
Ch. 8.15 - Define (a) a phase in a material and (b) a phase...Ch. 8.15 - In the pure water pressure-temperature equilibrium...Ch. 8.15 - How many triple points are there in the pure iron...Ch. 8.15 - Write the equation for the Gibbs phase rule and...Ch. 8.15 - Refer to the pressuretemperature equilibrium phase...Ch. 8.15 - (a) What is a cooling curve? (b) What type of...Ch. 8.15 - Prob. 7KCPCh. 8.15 - What is an alloy? What is the difference between...Ch. 8.15 - Prob. 9KCPCh. 8.15 - What is the significance of the liquidus curve?...
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