The Science and Engineering of Materials (MindTap Course List)
7th Edition
ISBN: 9781305076761
Author: Donald R. Askeland, Wendelin J. Wright
Publisher: Cengage Learning
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Chapter 4, Problem 4.37P
To determine
The reason for the behavior of metal as brittle materials without dislocation.
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Students have asked these similar questions
Why impurities can help improve the strength of metal (e.g. carbon in iron)? Also use dislocation theory to explain.
Does strain hardening aluminium increases the strength by reducing the number of dislocations? Why ?
When 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 reduced
Chapter 4 Solutions
The Science and Engineering of Materials (MindTap Course List)
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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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 do dislocationjunctions contributeto strengthening?arrow_forwardWhich can cross-slip––an edge dislocation, a screw dislocation, or a mixed dislocation? Why?arrow_forwardIf a series of dislocations produced by a single FrankRead source encounter an impassible barrier, a back stress is created. What is the reason for this back stress, and why is it very effective for dislocations produced by a single F-R source?arrow_forward
- 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_forwardexaplin with illustrations, slip via dislocation motion (edge abd screw dislocation) and twinningarrow_forwardSketch following modes of dislocation motion and name conditions that help them occur: 1. Cross slip 2. Climb up & climb downarrow_forward
- WHAT is meant by dislocation? State different types of dislocation with neat sketches .arrow_forwardWith a suitable graphical aid explain the significance of dislocations in altering the yield stress and work hardening of iron alloys.arrow_forwardDislocation movement is hindered by: (This question has more than one correct answer) a. Increase in impurity atom concentration b. Reduced grain size c. High angles of misalignment between grains d. Plastic deformation during loadingarrow_forward
- 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.arrow_forwardAnswer both with short explanation .arrow_forwardDraw a simple sketch and explain the dislocation climb mechanism. How does temperature affect the climbing mechanism?arrow_forward
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