Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 9.13, Problem 48KCP
(a)
To determine
What are the Monel alloys.
(b)
To determine
What are some of their applications.
(c)
To determine
What types of precipitates are used to strengthen the precipitation-hardenable alloy Monel K500.
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(d) Explain how a cored structure is produced in a 70% Cu-30% Ni alloy. How can the cored
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The melting point of a adamantiumis 740°C, the associated heat of fusion is 12kJ/mol, and the heat capacities of the solid andliquid phases are 30.2 and 37.8J K−1mol−1,respectively. (a) Calculate the change in molarentropy of adamantium that is heated from 700°Cto 800°C. (b) What is the change in the molarenthalpy
Copper-rich copper-beryllium alloys are precipitation hardenable. After consulting
the portion of the phase diagram shown in Figure below, do the following:
Composition (at% Be)
10
15
20
Liquid
1000
866°C
800
-620°C
600
a+
400
2
3.
(Cu)
Composition (wt% Bo)
(1) Indicate the range of compositions over which these alloys be precipitation
hardened.
(ii) Describe the heat-treatment procedures (in terms of temperatures) that would be
used to precipitation harden an alloy having a composition of your choosing but lying
within the range given for part (i).
Temperature ("O
Chapter 9 Solutions
Foundations of Materials Science and Engineering
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