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MindTap Engineering for Askeland/Wright's The Science and Engineering of Materials, 7th Edition, [Instant Access], 2 terms (12 months)
7th Edition
ISBN: 9781305111219
Author: Donald R. Askeland; Wendelin J. Wright
Publisher: Cengage Learning US
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Chapter 4, Problem 4.35P
To determine
The mass of aluminum in grams.
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10- Consider a cold worked (deformed) metal specimen that has a dislocation density of 1010 mm/mm2.
Suppose that all the dislocations in 1000 mm (1 cm') were somehow removed and linked end to end.
How far would this chain extend?
A-
1 meter (10 km).
B-
10 meter (10 km).
100 meter (10 km).
10 meter (10' km).
1010 meter (10 km).
C-
D-
E-
Which of the following statements are true of dislocations:
Select one or more:
a.
Dislocations are spatially fixed defects
b.
Dislocations arise due to insertion of a foreign atom into a lattice site of a “host” metal
c.
Dislocations can be viewed without the aid of a microscope
d.
Dislocations enable plasticity in metals
e.
Dislocations can arise due to shear deformation of the lattice
To provide some perspective on the dimensions of atomic defects, consider a metal
specimen that has a dislocation density of 104 mm-2. Suppose that all the
dislocations in 1000 mm3 (1 cm3) were somehow removed and linked end to end.
How far (in miles) would this chain extend? Now suppose that the density is
increased to 1010 mm-2 by cold working. What would be the chain length of
dislocations in 1000 mm3 of material?
Chapter 4 Solutions
MindTap Engineering for Askeland/Wright's The Science and Engineering of Materials, 7th Edition, [Instant Access], 2 terms (12 months)
Ch. 4 - Gold has 5.82108vacancies/cm3 at equilibrium at...Ch. 4 - Prob. 4.2PCh. 4 - Calculate the number of vacancies per cm3 expected...Ch. 4 - Prob. 4.4PCh. 4 - Prob. 4.5PCh. 4 - Prob. 4.6PCh. 4 - Prob. 4.7PCh. 4 - Prob. 4.8PCh. 4 - Prob. 4.9PCh. 4 - Au and Ag form a substitutional solid solution....
Ch. 4 - Prob. 4.11PCh. 4 - Prob. 4.12PCh. 4 - Prob. 4.13PCh. 4 - Prob. 4.14PCh. 4 - Prob. 4.15PCh. 4 - Prob. 4.16PCh. 4 - Prob. 4.17PCh. 4 - Prob. 4.18PCh. 4 - Write down the defect chemistry equation for...Ch. 4 - Prob. 4.20PCh. 4 - What is the Burger’s vector orientation...Ch. 4 - What is slip system and what role does it play in...Ch. 4 - Draw a Burgers circuit around the dislocation...Ch. 4 - What are the Miller indices of the slip...Ch. 4 - Prob. 4.25PCh. 4 - Prob. 4.26PCh. 4 - Calculate the length of the Burgers vector in the...Ch. 4 - Prob. 4.28PCh. 4 - Prob. 4.29PCh. 4 - The crystal shown in Figure 4-19 contains two...Ch. 4 - Prob. 4.31PCh. 4 - Prob. 4.32PCh. 4 - Prob. 4.33PCh. 4 - Prob. 4.34PCh. 4 - Prob. 4.35PCh. 4 - Prob. 4.36PCh. 4 - Prob. 4.37PCh. 4 - Prob. 4.38PCh. 4 - Prob. 4.39PCh. 4 - Prob. 4.40PCh. 4 - Prob. 4.41PCh. 4 - Prob. 4.42PCh. 4 - Prob. 4.43PCh. 4 - Prob. 4.44PCh. 4 - Why is it that single crystal and polycryst alline...Ch. 4 - Prob. 4.46PCh. 4 - Prob. 4.47PCh. 4 - Prob. 4.48PCh. 4 - Prob. 4.49PCh. 4 - Prob. 4.50PCh. 4 - Prob. 4.51PCh. 4 - Prob. 4.52PCh. 4 - Prob. 4.53PCh. 4 - Prob. 4.54PCh. 4 - Prob. 4.55PCh. 4 - Prob. 4.56PCh. 4 - Prob. 4.57PCh. 4 - Prob. 4.58PCh. 4 - Determine the ASTM grain size number for the...Ch. 4 - Certain ceramics with special dielectric...Ch. 4 - Prob. 4.61PCh. 4 - Calculate the angle of a smalla ngle grain...Ch. 4 - For BCC iron, calculate the average distance...Ch. 4 - Every time we alloy a metal, it gets stronger. Is...Ch. 4 - Prob. 4.65PCh. 4 - Prob. 4.66PCh. 4 - Prob. 4.67PCh. 4 - Prob. 4.68PCh. 4 - Prob. 4.69PCh. 4 - Prob. 4.70PCh. 4 - Prob. 4.71PCh. 4 - Prob. 4.72PCh. 4 - Prob. 4.73PCh. 4 - Prob. 4.74PCh. 4 - Prob. 4.75DPCh. 4 - You would like a metal plate with good...Ch. 4 - Prob. 4.77DPCh. 4 - Temperature dependence of vacancy conc enlralwns....Ch. 4 - Prob. 4.79CPCh. 4 - Prob. 4.80CPCh. 4 - Describe the problems associated with metal...Ch. 4 - Prob. 4.2KP
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- Moving to another question will save this response. uestion 37 Materials with dislocations have lower shear strengths than materials with no dislocations. Is this true or false? Moving to another question will save this response. Larrow_forwardWHAT is meant by dislocation? State different types of dislocation with neat sketches .arrow_forwardThe crystal shown in below figure contains two dislocations A and B. If a shear stress isapplied to the crystal as shown, what will happen to dislocations A and B? Demonstratewith proper illustration.arrow_forward
- ...to the dislocation In mixed dislocation, the slip vector is O A. Nether parallel nor normal O B. Parallel O C. Both parallel and Normal O D. Normalarrow_forward1. Dislocations: What Are They? What makes them significant in metals and alloys? By drawing a 2D ball and stick model, you can highlight the key characteristics of an edge dislocation, including the extra-half plane, dislocation center, slip plane, sense vector, and Burgers vector. 2.What are the Burgers and sensation (dislocation line) vectors used for? Please answer all with full detailarrow_forwardAnswer both with short explanation .arrow_forward
- In Fig. 3.2, must it be true that the dislocation segments at points C and C' are screw dislocations? And must it be true that they are of opposite sign?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_forwardb. Figure 2 shows another ball-and-stick model of a very small crystal of a- Polonium, but this crystal contains one edge dislocation. Answer the questions. Figure 2: If the edge dislocation moves by slip or glide by one unit of b from left to right, how many bonds will be broken to achieve this outcome? Answer: To move the dislocation from its current position (Fig. 2) to the far right (so that a small step of size b appears at the right-side face), how many bonds will be broken? Answer:arrow_forward
- You are given the density of a metal as 2.07 g/cm³. You are advised the crystallographic structure is fcc, and the atomic mass is 25.5 g/mol. What is the atomic radius of the metal? a. 0.15 nm b. 0.12 nm c. 0.11 nm d. 0.18 nmarrow_forwardConsider a dislocation condition as shown below. A) what is the strain state in the upper region and B) how would addition of small impurity atoms in the region indicated by "*"s change it? OOOOOO ooooooo OO OO O O O O O O O O O O O O Select one: a. Tensile, would increase tensile strain b. Shear, would increase compressive strain c. Tensile, would decrease tensile strain O d. Compressive, would reduce compressive strain e. Compressive, would increase compressive strainarrow_forwardSilver Ag has the fcc crystal structure as shown in the figure below. Determine its atomic packing factor APF? Given: The radius of Germanium: r(Ag)= 0.144 nm.  Select one: a. 0.14 b. 0.34 c. 0.68 d. 0.12 e. 0.4 f. 0.51 g. 0.74 h. 0.21arrow_forward
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Dislocations and Plastic Deformation; Author: LearnChemE;https://www.youtube.com/watch?v=cpvTwYAUeA8;License: Standard Youtube License