Topical Overview - Topics Covered on Exam 2 1. Chapter 4 I...

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Topics Covered on Exam 2 1. Chapter 4 – Imperfections: Point and Line Defects a. Types of defects: point, line, interfacial, volume b. Theoretical strength of materials c. Point defects i. Types of atomic defects: vacancy, interstitial, substitutional, Frenkel and Schottky ii. Characteristics of point defect occupancy in FCC, BCC, and HCP crystal structures iii. Equilibrium concentration of defects (effect of temperature on concentration) iv. Formation of point defects (row of vacancies, row of interstitials, radiation damage, ion implantation, quenching) v. Effect of point defects on mechanical properties d. Line defects i. Characteristics of edge, screw, and mixed dislocations 1. Burgers circuit 2. How they move (and constraints on movement) 3. Orientation of line and burgers vector 4. Location of the slip plane 5. Processes by which dislocations can leave slip planes 6. Dislocation loops 7. Stress fields around dislocations 8. Forces and stresses required to bow a dislocation ii. Partials
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Topical Overview - Topics Covered on Exam 2 1. Chapter 4 I...

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