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 5, Problem 5.76P
To determine
The reason for decrease in strength of metallic material on increasing the grain size
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Why impurities can help improve the strength of metal (e.g. carbon in iron)? Also use dislocation theory to explain.
1. 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 detail
g. Why is the grain boundaries oxidization more sever and are the 1st
to be oxidized than the grain surface themselves?
Chapter 5 Solutions
The Science and Engineering of Materials (MindTap Course List)
Ch. 5 - What is the driving force for diffusion?Ch. 5 - Give three examples of materials processes that...Ch. 5 - In the carburization treatment of steels, what are...Ch. 5 - Prob. 5.4PCh. 5 - Prob. 5.5PCh. 5 - Prob. 5.6PCh. 5 - Prob. 5.7PCh. 5 - A certain mechanical component is heat treated...Ch. 5 - Prob. 5.9PCh. 5 - Prob. 5.10P
Ch. 5 - Prob. 5.11PCh. 5 - Prob. 5.12PCh. 5 - Prob. 5.13PCh. 5 - Prob. 5.14PCh. 5 - Prob. 5.15PCh. 5 - Prob. 5.16PCh. 5 - Compare the diffusion coefficients of carb on in...Ch. 5 - Prob. 5.18PCh. 5 - Activation energy is sometimes expressed as...Ch. 5 - Prob. 5.20PCh. 5 - The activation energy for the diffusion of copper...Ch. 5 - Prob. 5.22PCh. 5 - Prob. 5.23PCh. 5 - Prob. 5.24PCh. 5 - Prob. 5.25PCh. 5 - Write down Fick’s first law of diffusion. Clearly...Ch. 5 - Prob. 5.27PCh. 5 - Prob. 5.28PCh. 5 - Prob. 5.29PCh. 5 - Prob. 5.30PCh. 5 - A 1-mm-thick BCC iron foil is used to separate a...Ch. 5 - Prob. 5.32PCh. 5 - Prob. 5.33PCh. 5 - A 0.001 in. BCC iron foil is used to separate a...Ch. 5 - Prob. 5.35PCh. 5 - Prob. 5.36PCh. 5 - Prob. 5.37PCh. 5 - Prob. 5.38PCh. 5 - Prob. 5.39PCh. 5 - Prob. 5.40PCh. 5 - Prob. 5.41PCh. 5 - Prob. 5.42PCh. 5 - Prob. 5.43PCh. 5 - Prob. 5.44PCh. 5 - Prob. 5.45PCh. 5 - Prob. 5.46PCh. 5 - Prob. 5.47PCh. 5 - Prob. 5.48PCh. 5 - Pure zinc is to be diffused into copper by dipping...Ch. 5 - Nitriding is a process in which nitrogen is...Ch. 5 - Determine the carburizing time necessary to...Ch. 5 - Prob. 5.52PCh. 5 - Prob. 5.53PCh. 5 - Prob. 5.54PCh. 5 - Prob. 5.55PCh. 5 - Prob. 5.56PCh. 5 - Prob. 5.57PCh. 5 - Prob. 5.58PCh. 5 - Compare the rate at which oxygen ions diffuse in...Ch. 5 - Prob. 5.60PCh. 5 - Prob. 5.61PCh. 5 - Prob. 5.62PCh. 5 - Prob. 5.63PCh. 5 - Prob. 5.64PCh. 5 - Prob. 5.65PCh. 5 - A 0.80% C steel must operate at 950°C in an...Ch. 5 - Prob. 5.67PCh. 5 - Prob. 5.68PCh. 5 - Prob. 5.69PCh. 5 - Prob. 5.70PCh. 5 - Prob. 5.71PCh. 5 - Prob. 5.72PCh. 5 - Most metals and alloys can be processed using the...Ch. 5 - Prob. 5.74PCh. 5 - Prob. 5.75PCh. 5 - Prob. 5.76PCh. 5 - A ceramic part made from MgO is sintered...Ch. 5 - Prob. 5.78PCh. 5 - What are the advantages of using hot pressing and...Ch. 5 - Prob. 5.80PCh. 5 - Prob. 5.81DPCh. 5 - Design a spherical tank, with a will thickness of...Ch. 5 - Prob. 5.83DPCh. 5 - Prob. 5.84DPCh. 5 - Prob. 5.85DPCh. 5 - Prob. 5.86CPCh. 5 - Prob. 5.87CPCh. 5 - Prob. 5.88CPCh. 5 - Prob. 5.1KP
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- Sketch following modes of dislocation motion and name conditions that help them occur: 1. Cross slip 2. Climb up & climb downarrow_forwardAim and Objectives for grain size structure and macro structurearrow_forwardWhat is cold working process for metals? Why cold working can help improve strength of the metal? Use dislocation theory to explain.arrow_forward
- Do noncrystalline or amorphous materials have grain boundaries? Why or why not?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_forwardWhy is it that dislocations play an important role in controlling the mechanical properties of metallic materials, however, they do not play a role in determining the mechanical properties of glasses?arrow_forward
- Give equations for steady state creep rate. What dislocation mechanisms lead to creep. How is creep damage reduced/slowed downarrow_forwardDislocation density has a favorable influence to ease slip and to make slip difficult to happen. Explain howarrow_forwardThe yield strength for an alloy that has an average grain diameter of 1.6 × 10-2 mm is 320 MPa. At a grain diameter 3.9 × 10-3³ mm, the yield strength increases to 480 MPa. At what grain diameter (in mm) will the yield strength be 441 MPa? i mmarrow_forward
- exaplin with illustrations, slip via dislocation motion (edge abd screw dislocation) and twinningarrow_forwardHow will results vary for grain size when using the linear intercept method versus the circular grid method?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
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