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 3, Problem 48RQ
How can deformation and recrystallization improve the grain structure of a metal?
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Students have asked these similar questions
During the recrystallization of a cold-worked material, which of the following statement(s) is (are) true?
O There is some reduction in the number of dislocations.
O Some of the internal strain energy is relieved.
O The metal becomes more ductile, as in its precold-worked state.
O Grains with high strains are replaced with new, unstrained grains.
O There is a significant reduction in the number of dislocations, to approximately the number found in the precold-worked
state,
O The thermal conductivity is recovered to its precold-worked state.
O All of the internal strain energy is relieved.
O The electrical conductivity is recovered to its precold-worked state.
What physical reasons why reducing grain size is an effective alternative for increasing the strength of a metal?
Which method do we use to monitor dislocation movements in tensile testing? How monitoring is done in this method, explain the working mechanism of the system in detail.
Chapter 3 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 3 - What enables us to control the properties and...Ch. 3 - Â What are the next levels of structure that are...Ch. 3 - Prob. 3RQCh. 3 - Prob. 4RQCh. 3 - Prob. 5RQCh. 3 - Prob. 6RQCh. 3 - What are the three types of primary bonds, and...Ch. 3 - What are some general characteristics of...Ch. 3 - Prob. 9RQCh. 3 - Prob. 10RQ
Ch. 3 - Prob. 11RQCh. 3 - Prob. 12RQCh. 3 - Prob. 13RQCh. 3 - What are some unique property features of...Ch. 3 - Prob. 15RQCh. 3 - Prob. 16RQCh. 3 - Prob. 17RQCh. 3 - What are some of the general characteristics of...Ch. 3 - Prob. 19RQCh. 3 - Prob. 20RQCh. 3 - Prob. 21RQCh. 3 - Prob. 22RQCh. 3 - Prob. 23RQCh. 3 - Prob. 24RQCh. 3 - What is a grain? A grain boundary?Ch. 3 - Prob. 26RQCh. 3 - What is implied by a low ASTM grain�size number?...Ch. 3 - Prob. 28RQCh. 3 - What is Poissons ratio, and under what conditions...Ch. 3 - What is plastic deformation?Ch. 3 - Why do metals retain their strength during plastic...Ch. 3 - Prob. 32RQCh. 3 - Prob. 33RQCh. 3 - What is a dislocation? Using the carpet analogy,...Ch. 3 - What is the difference between an edge dislocation...Ch. 3 - What are some of the common barriers to...Ch. 3 - Prob. 37RQCh. 3 - What is the mechanism (or mechanisms) responsible...Ch. 3 - Why is a fine grain size often desired in an...Ch. 3 - What is an anisotropic property? Why might...Ch. 3 - What is the difference between brittle fracture...Ch. 3 - How does a metal increase its internal energy...Ch. 3 - What is required in order to drive the...Ch. 3 - How might the lowest recrystallization temperature...Ch. 3 - In what ways can recrystallization be used to...Ch. 3 - What is the major distinguishing feature between...Ch. 3 - What is warm working?Ch. 3 - How can deformation and recrystallization improve...Ch. 3 - Why is grain growth usually undesirable?Ch. 3 - Prob. 50RQCh. 3 - As a result of their ionic or covalent bonding,...Ch. 3 - Prob. 52RQCh. 3 - Prob. 53RQCh. 3 - What is the difference between an intrinsic...Ch. 3 - What is required for electrical conductivity in...Ch. 3 - What is required for electrical conductivity in...Ch. 3 - Brass is an alloy of copper with a certain amount...Ch. 3 - It is not uncommon for processing operations to...Ch. 3 - Polyethylene consists of fibrous molecules of...Ch. 3 - Prob. 5P
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- how does the following recrystallization percentage of metallic alloys after annealing is calculated?arrow_forwardWhen a cold-worked metal is heat-treated below its melting point over a period of time, which of the following phenomena occur? (This question has more than one correct answer) a. Strength is increased b. Dislocation density decreases c. Grain size increases d. Internal lattice strains decrease e. Ductility is reducedarrow_forwardExperimental Techniques for Identification of Microstructure and Defects?arrow_forward
- How do dislocationjunctions contributeto strengthening?arrow_forwardexaplin with illustrations, slip via dislocation motion (edge abd screw dislocation) and twinningarrow_forward3) The strength of a titanium piece is found to be 65,000 psi when the grain size is 17 x10-6 m and 82,000 psi when the grain size is 0.8 x10 m. What would be the 9- (a) Constants in the Hall-Petch equation Strength of this titanium piece when the grain size is reduced to 0.2 x10 m. (9)arrow_forward
- b- An ASTM grain size determination is being made from a photomicrograph of a metal which has a magnification of 500X. What is the ASTM grain size number of the metal if there are 64 grains per square inch?arrow_forwardWhat is the difference between the microstructure and the macrostructure of a material?arrow_forwardSchottky Defect Frenkel Defect Name four methods used for strengthening of metals. What is the common principle that these methods rely on to make a metal stronger. 2. For the data given below a) Calculate the number-average molecular weight of polypropyl carbon are 1.008 and ns? Atomic weights of hydrogen andarrow_forward
- need correct and explained properlyarrow_forwardQuestion The yield strength for an aluminum alloy that has an average grain diameter of 10 um is 400 MPa. As the grain diameter is increased to 80 um, the yield strength decreases to 260 MPa. When the grain diameter is 2 um, its yield strength is close to 760 MPa 668 MPa 566 MPa 419 MPaarrow_forwardThe yield strength for an alloy that has an average grain diameter of 4.1 × 10-2 mm is 131 MPa. At a grain diameter of 7.6 × 10-3 mm, the yield strength increases to 246 MPa. At what grain diameter, in mm, will the yield strength be 236 MPa?arrow_forward
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