Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
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Textbook Question
Chapter 4, Problem 17RQ
What points on a tie�line are used to determine the chemistry (or composition) of the component phases?
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For the given Ti-Cu phase diagram, specify all temperature-composition points at which eutectics, eutectoids, peritectic,
and congruent phase transformations occur. Also, for each, write the reaction upon cooling.
Temperature (°C)
1700
1500
1300
1100
900
700
500
0
(Ti)
1
B
a
20
Ti₂Cu
40
Composition (wt% Cu)
L
TiCu
TigCu4
60
Phase diagram of lead-tin system is given in the figure below. For the of composition for 80 wt.% Sn-20 wt.% Pb:
(a) Draw schematic sketches of the microstructure,
(b) calculate the compositions and weight fractions of each phases
at 280°C, just above 183°C (T ) and just below 183°C (T).
T° C)
300
L (liquid)
TL+BB
97.8
200-
18.3
183° С 1
%3D
3D
100-
a + B
13 20
100
32
60
80
C, wt% Sn
Consider the phase diagram below. The three points A, B, and C are at concentrations of 27, 31.9, and 33.8 wt% Ni respectively. The
ends of the tie line are at C1 = 25% wt% Ni and C2 = 35 wt% Ni. What are the weight fractions of the alpha phase at A and the L phase at
B, as well as the alpha phase/L phase ratio at C?
T(°C)
1300-L (liquid)
1200
20
ABC
L + a
C1
30
S
C2
liquidus
40
L + a
solidus
α
(solid).
O a. Walpha=0.12; WL=0.41; Walpha/WL = 9.41
O b. Walpha=0.27; WL-0.26; Walpha/WL = 11.11
O c. Walpha=0.15; WL-0.26; Walpha/WL = 11.80
Od. Walpha=0.20; WL-0.31; Walpha/WL = 7.33
50
wt% Ni
Chapter 4 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 4 - What kind of questions can be answered by...Ch. 4 - Prob. 2RQCh. 4 - Supplement the examples provided in the text with...Ch. 4 - Prob. 4RQCh. 4 - What three primary variables are generally...Ch. 4 - Use the pressure–temperature diagram for water...Ch. 4 - Prob. 7RQCh. 4 - What form of equilibrium phase diagram is most...Ch. 4 - What is a cooling curve?Ch. 4 - Prob. 10RQ
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - What types of changes occur upon cooling through a...Ch. 4 - Prob. 15RQCh. 4 - What is a tie�line? For what types of phase...Ch. 4 - What points on a tie�line are used to determine...Ch. 4 - Prob. 18RQCh. 4 - What is a cored structure? Under what conditions...Ch. 4 - What is the difference between a cored structure...Ch. 4 - Prob. 21RQCh. 4 - Prob. 22RQCh. 4 - Prob. 23RQCh. 4 - Prob. 24RQCh. 4 - For the various three�phase reactions, what does...Ch. 4 - Prob. 26RQCh. 4 - Prob. 27RQCh. 4 - Prob. 28RQCh. 4 - Prob. 29RQCh. 4 - Prob. 30RQCh. 4 - Prob. 31RQCh. 4 - Prob. 32RQCh. 4 - Prob. 33RQCh. 4 - Prob. 34RQCh. 4 - Prob. 35RQCh. 4 - Prob. 36RQCh. 4 - Prob. 37RQCh. 4 - What is carbon equivalent, and how is it computed?Ch. 4 - Prob. 39RQCh. 4 - Prob. 40RQCh. 4 - Prob. 1PCh. 4 - Prob. 2PCh. 4 - Prob. 3PCh. 4 - Consider the manufacture of a fishhook beginning...Ch. 4 - If a stainless steel were to be used, what type of...Ch. 4 - A wide spectrum of coatings and surface treatments...Ch. 4 - Prob. 1.4CSCh. 4 - Prob. 2.1CSCh. 4 - Prob. 2.2CSCh. 4 - Prob. 2.3CSCh. 4 - Prob. 2.4CS
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