EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Chapter 1, Problem 60SDP
The movement of an edge dislocation was described in Section 1.4.1, by means of an analogy involving a hump in a carpet on the floor and how the whole carpet can eventually be moved by moving the hump forward. Recall that the entanglement of dislocations was described in terms of two humps at different angles. Use a piece of cloth placed on a flat table to demonstrate these phenomena.
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Chapter 1 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 1 - What is the difference between an atom and a...Ch. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Define anisotropy. What is its significance?Ch. 1 - What effects does recrystallization have on the...Ch. 1 - What is strain hardening, and what effects does it...Ch. 1 - Explain what is meant by structure-sensitive and...Ch. 1 - Prob. 9RQCh. 1 - What influence does grain size have on the...
Ch. 1 - What is the relationship between the nucleation...Ch. 1 - What is a slip system, and what is its...Ch. 1 - Explain the difference between recovery and...Ch. 1 - What is hot shortness, and what is its...Ch. 1 - Explain the advantages and limitations of cold,...Ch. 1 - Describe what the orange peel effect is. Explain...Ch. 1 - Some metals, such as lead, do not become stronger...Ch. 1 - Describe the difference between preferred...Ch. 1 - Differentiate between stress relaxation and stress...Ch. 1 - What is twinning? How does it differ from slip?Ch. 1 - Prob. 21QLPCh. 1 - What is the significance of the fact that some...Ch. 1 - Is it possible for two pieces of the same metal to...Ch. 1 - Prob. 24QLPCh. 1 - A cold-worked piece of metal has been...Ch. 1 - What materials and structures can you think of...Ch. 1 - Two parts have been made of the same material, but...Ch. 1 - Do you think it might be important to know whether...Ch. 1 - Explain why the strength of a polycrystalline...Ch. 1 - Describe the technique you would use to reduce the...Ch. 1 - What is the significance of the fact that such...Ch. 1 - Prob. 32QLPCh. 1 - It has been noted that the more a metal has been...Ch. 1 - Is it possible to cold work a metal at...Ch. 1 - Comment on your observations regarding Fig. 1.14.Ch. 1 - Is it possible for a metal to be completely...Ch. 1 - Prob. 37QTPCh. 1 - Prob. 38QTPCh. 1 - Plot the data given in Table 1.1 in terms of...Ch. 1 - A strip of metal is reduced from 30 mm in...Ch. 1 - Prob. 41QTPCh. 1 - How many grains are there on the surface of the...Ch. 1 - Prob. 43QTPCh. 1 - Prob. 44QTPCh. 1 - Prob. 45QTPCh. 1 - A technician determines that the grain size of a...Ch. 1 - If the diameter of the aluminum atom is 0.28 nm,...Ch. 1 - The following data are obtained in tension tests...Ch. 1 - Prob. 50QTPCh. 1 - Prob. 51QTPCh. 1 - Prob. 52QTPCh. 1 - Same as Prob. 1.39, but ASTM no. versus...Ch. 1 - By stretching a thin strip of polished metal, as...Ch. 1 - Draw some analogies to mechanical fiberingfor...Ch. 1 - Draw some analogies to the phenomenon of hot...Ch. 1 - Take a deck of playing cards, place a rubber band...Ch. 1 - Give examples in which anisotropy is scale...Ch. 1 - The movement of an edge dislocation was described...
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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_forwardMaterials that block the movement of dislocations are:arrow_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_forward
- dislocation theory in following figures calculate applied Force from dislocation A(b) to dislocation B(b') using relation Peach-Koehler الف( la B (b') | A (b) F, (5 B (b') b' A (b)arrow_forward6. Sketch how two edge dislocations of opposite sign on the same slip plane can anihilate each other C. two screw dislocations of opposite sign also annihilate each other?arrow_forwardWhy impurities can help improve the strength of metal (e.g. carbon in iron)? Also use dislocation theory to explain.arrow_forward
- b. 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_forwardA single crystal Al,O, rod (precisely 6 mm diameter7 60 mm long) is used to apply loads to smalsamples in a high-precision dilatometer (a longin.measuring device). Calculate the resulting imdimensions if the crystal is subjected to a 33-kN arigcompression load.arrow_forwardDoes the strength of a metal always increase as dislocation density increases? Explain.arrow_forward
- Can ceramic and polymeric materials contain dislocations?arrow_forwardMoving 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_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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Dislocations and Plastic Deformation; Author: LearnChemE;https://www.youtube.com/watch?v=cpvTwYAUeA8;License: Standard Youtube License