Dislocations and Strengthening Mechanisms — Chapter 7 Summary from Callister’s Materials Science and Engineering
Dislocations and Strengthening Mechanisms — Chapter 7 Summary from Callister’s Materials Science and Engineering Chapter 7 of Materials Science and Engineering: An Introduction by William D. Callister, Jr. and David G. Rethwisch dives into the microscopic mechanisms of plastic deformation and the strategies engineers use to strengthen metals. This comprehensive summary explains the role of dislocations, the movement of slip systems, and the main methods for increasing the strength of metallic materials—foundational knowledge for students, engineers, and anyone interested in the science of strong, resilient structures. Watch the full podcast-style summary below, and subscribe to Last Minute Lecture for clear, chapter-by-chapter breakdowns of key materials science concepts! Plastic Deformation and Dislocations Plastic deformation—the permanent change in shape of metals—occurs through the movement of dislocations , which are linear defects within the crystal lattice. Ther...