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 7, Problem 39RQ
To determine
The ways of imparting ductility to magnesium alloys.
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Question 1
You are working on a design team at a small orthopaedic firm. You have been asked to select a cobalt-
chrome-molybdenum (CoCr) material that will not experience plastic deformation under a specific mechanical test, as follows...
A tensile stress is applied along the long axis of a solid cylindrical rod that has a diameter of 10 mm. An applied load of some
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Q1F: How would the "new alloy" material (with different properties as shown below) behave, assuming it has the same initial
diameter (10mm) and applied load (F) in the tensile test? That is, would it experience plastic deformation (yield) under the
conditions of this problem?
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In blanking of a circular sheet-metal part, is the clearance applied to the punch diameter or the die
diameter?
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Based on the TTT curve, what is it that should be avoided during martensitic process?
What is the main condition for strengthening an alloy by precipitation?
Q3 contd.
(d) The yield strength values of pure aluminium (Al) and pure copper (Cu) are 25 MPa and 20
MPa, respectively; whereas the yield strength values of cold rolled Al-Mn-Mg alloy and cast
60-40 Brass (60% Cu, 40% Zn) are 200 MPa and 105 MPa, respectively. With aid of
schematics, explain the main mechanisms account for the increases in the strengths.
(e) A cylindrical tie rod with a diameter of 18.4 mm is subjected to cyclic loading. The stress range
is +/- 200 kN. Figure Q3.3 shows the S-N curve of the material of which the rod is made, how
many cycles will this rod survive?
Stress amplitude
O₂ (MPa)
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
10²
10³
104
4340 low-alloy steel
Stress ratio = -1
Fig. Q3.3
105
106
Number of cycles to failure, Nf
107
108
Chapter 7 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 7 - What types of properties do nonferrous metals...Ch. 7 - For what respects are the nonferrous metals...Ch. 7 - In what ways might the nonferrous metals offer...Ch. 7 - Prob. 4RQCh. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - What properties of copper make it attractive for...Ch. 7 - Prob. 8RQCh. 7 - Prob. 9RQCh. 7 - Why does the copper designation system separate...
Ch. 7 - What are some of the attractive engineering...Ch. 7 - Why might cold�worked brass require a stress...Ch. 7 - Why might the term bronze be potentially...Ch. 7 - What are some attractive engineering properties of...Ch. 7 - Prob. 15RQCh. 7 - Prob. 16RQCh. 7 - Prob. 17RQCh. 7 - Prob. 18RQCh. 7 - Prob. 19RQCh. 7 - What is the primary benefit of aluminum recycling...Ch. 7 - Prob. 21RQCh. 7 - Prob. 22RQCh. 7 - Prob. 23RQCh. 7 - Prob. 24RQCh. 7 - How is the corrosion�resistance mechanism...Ch. 7 - Why do aluminum and aluminum alloys present...Ch. 7 - How are the wrought alloys distinguished from the...Ch. 7 - Prob. 28RQCh. 7 - Prob. 29RQCh. 7 - What unique combination of properties is offered...Ch. 7 - Prob. 31RQCh. 7 - Why are aluminum–silicon alloys popular for...Ch. 7 - What specific material properties might make an...Ch. 7 - Prob. 34RQCh. 7 - What are some possible applications of aluminum...Ch. 7 - Prob. 36RQCh. 7 - Describe the designation system applied to...Ch. 7 - Prob. 38RQCh. 7 - Prob. 39RQCh. 7 - How does the ability to strengthen magnesium...Ch. 7 - Prob. 41RQCh. 7 - Prob. 42RQCh. 7 - Prob. 43RQCh. 7 - Prob. 44RQCh. 7 - Prob. 45RQCh. 7 - What feature is used in the designation of...Ch. 7 - What are some of the primary application areas for...Ch. 7 - Prob. 48RQCh. 7 - Prob. 49RQCh. 7 - Prob. 50RQCh. 7 - What are the distinct characteristics of...Ch. 7 - Prob. 52RQCh. 7 - Prob. 53RQCh. 7 - Prob. 54RQCh. 7 - Prob. 55RQCh. 7 - Prob. 56RQCh. 7 - What temperature is generally considered to be the...Ch. 7 - Prob. 58RQCh. 7 - Prob. 59RQCh. 7 - Prob. 60RQCh. 7 - What are some applications of depleted uranium?...Ch. 7 - Prob. 62RQCh. 7 - Prob. 63RQCh. 7 - Prob. 64RQCh. 7 - What are some of the medical applications of...Ch. 7 - Prob. 66RQCh. 7 - Prob. 1PCh. 7 - Identify or select a product in which a magnesium...Ch. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - In 2008, The US Environmental Protection Agency...Ch. 7 - For each of the materials identified, determine...Ch. 7 - There are various pairings between the ball and...Ch. 7 - Which of the preceding combinations would you...Ch. 7 - Prob. 1.4CSCh. 7 - Prob. 1.5CSCh. 7 - Prob. 2.1CSCh. 7 - Prob. 2.2CS
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