Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 1, Problem 21QLP
To determine
Elaborate the reason as why the study of the crystal structure of metals is important.
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Does the strength of a metal always increase as dislocation density increases? Explain.
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Explain in detail that how defects in metallic materials control the properties?
Chapter 1 Solutions
Manufacturing Engineering & Technology
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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- Explain why BCC (body-centered cubic) materials generally have higher mechanical strength values than FCC (face-centered cubic) materials in terms of (a) slip systems and (b) extended dislocations.arrow_forwardMetals and their alloys possess crystalline structures that may be altered to change their mechanical properties. Illustrate, with the aid of a diagram, substitutional ANDarrow_forward2. Briefly describe are dislocations are necessary or bad for us? Additionally, define three types of defects in metals.arrow_forward
- Briefly describe are dislocations are necessary or bad for us? Additionally, define of defects in metals.arrow_forwardExplain the types of dislocations in a crystal structure with neat diagramsarrow_forwardList which main slip systems are active in FCC, BCC, and HCP metals, and explain why those particular planes/ directions are favored.arrow_forward
- Suppose you would like to introduce an interstitial and a large substitutional atom in the crystal near a dislocation.Would the atom fit more easily above or below the dislocation line?Explain.arrow_forward1. In terms of their Burger's and sense vectors, slide, and slip (also known as glide), edge dislocations and screw dislocations should be compared and contrasted. 2. What makes twinning, a different plastic deformation process, undesirable in engineering metals and alloys? Briefly explain. Please explain all in full detailarrow_forwardWhat is the change in the free energy of a pure metal atom moving from one grain to another? Please draw the schematical illustration of the free energy and elaborate your answerarrow_forward
- Identify the sources of dislocations in the developing crystal and mention the most important ways that contribute to increasing their numbers with a detailed explanation.arrow_forwardWhen the metal is cooled in a molten state, a grain boundary is generated. Figure out the process of forming a grain boundary, and explain the characteristics of the grain boundary and its effect on electrical/thermal properties.arrow_forwardDescribe how you would determine the indices of given crystallographic directions.arrow_forward
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