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By the end of this chapter, students will be able to...
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Explain how the yield strength of a metal is related to the ability of dislocations to move. |
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Plot the yield strength, tensile strength, and ductility versus percent cold work for a metal sample. |
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Cite three properties that become altered when a metal is plastically deformed. |
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Compute the percent of cold work if the original and deformed cross-sectional dimensions of a metal that has been cold-worked are given. |
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Locate regions of compressive and tensile strains, which are created in the crystal due to the presence of dislocations, when given a drawing of an atom position around edge dislocation. |
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Define critical resolved shear stress. |
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Explain why fracture toughness, not toughness, is used for engineering design purposes. |
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Explain why ace-centered cubic metals do not experience ductile-to-brittle transition with decreasing temperature, while body-centered cubic metal do experience this. |
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Describe the phenomenon of cold working (strain-hardening) in terms of dislocation motion and interaction. |
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Define creep, fatigue, and fracture, and specify the conditions under which each of them occurs. |