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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Chapter 4, Problem 12RQ
To determine
The meaning of solubility limit.
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Using the following table, draw a melting point diagram and estimate the eutectic temperature and composition:
Percent composition
Melting point range (°C)
100% A
125-126
75% A-25% B
115-120
65% A- 35% B
128-131
50% A- 50% B
135-140
100% B
151-152
Can you suggest what additional points you need to give a more accurate measure of the eutectic point?
Question 4: Using the following TTT diagram for an iron-carbon alloy of eutectoid composition,
specify the nature of the final microstructure (in terms of microconstituents present and
approximate percentages of each) of a small specimen that has been subjected to the following
time-temperature treatments. In each case assume that the specimen begins at 760°C (1400°F)
and that it has been held at this temperature long enough to have achieved a complete and
homogeneous austenitic structure.
(1) Cool rapidly to 700°C (1290°F), hold for 104 s, then quench to room temperature
(ii) Reheat the specimen in part (1) to 700°C (1290°F) for 20 h.
(iii) Cool rapidly to 400°C (750°F), hold for 20 s, then quench to room temperature
(iv) Cool rapidly to 400°C (750°F), hold for 200 s, then quench to room temperature.
(v) Rapidly cool to 575°C (1065°F), hold for 20 s, rapidly cool to 350°C (660°F), hold
for 100 s, then quench to room temperature.
(vi) Rapidly cool to 250°C (480°F), hold for 100 s, then…
If the grain boundary energy for silver is 0.790 J/m2, (a) determine the Zener drag force applied to line of contact for a second phase particle with diameter of 600 nm. (b)
Determine, to a fırst approximation, the limiting grain size of silver containing a 1 percent volume fraction of a stable precipitate.
O 790 N, 40 µm
O 790 N, 80 um
O 1580 N, 40 um
O 1580 N, 80 um
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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- What is the bernoulli effect?arrow_forwarda) Sketch and label tensile stress-strain curves for a typical BCC and FCC metal and explain the salient differences from a slip system perspective Explain the Fick’s two laws of diffusion and discuss their common uses. What atomic factors govern the extent of solid solubility?arrow_forwardBINARY PHASE DIAGRAMS Please only answer parts d and e as the rest have been solved. Show full detailed explanation to answers with diagrams if necessary a)(i) What is the melting point of pure Mg?(ii) What is the maximum solubility of Mg in Pb and at what temperaturedoes this occur? (b) A 50 wt.% Pb-50wt% Mg alloy is slowly cooled from 700 °C to 400 °C.(i) At what temperature does the first solid phase form?(ii) What is the composition of this solid phase?(iii) At what temperature does all the liquid solidify?(iv) What is the composition of the last remaining liquid phase?(v) What is the freezing range? (c) What is the mass fraction of solid and liquid of a 60 wt.% Mg alloy at atemperature of 500 °C.(d) Draw and label the microstructure of an 80 wt.% Mg alloy at 600 °C.(e) A Mg-Pb alloy of mass 5.5 kg has a composition just slightly below thesolubility limit of 200 °C.(i) What mass of lead is in the alloy?(ii) If the alloy is heated to 350 °C how much more lead can be dissolvedin…arrow_forward
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