3 credits
Spring 2025 Lecture Upper Division
Focuses on the mechanisms for deformation and fracture of metal, intermetallic, and ceramic materials, with particular emphasis on high temperature properties. The industrial success of superalloys, dispersion-strengthened alloys, stainless steels, composites, and thermal barrier coatings will serve as the basis for exploring the relationship between composition, microstructure, and component application in high temperature performance. Topics included are alloying effects on dislocation climb and glide, grain boundary and lattice diffusion, and dynamic recrystallization. The interactions between environment and thermal and mechanical cycling also will be considered. Design tools for prediction and evaluation of component life will be investigated in detail, including an exploration of deformation mechanism maps. Offered in alternate years.
Learning Outcomes1Understand dislocation plasticity: nucleation, motion, multiplication and interactions of dislocations.
2Understand diffusion-based creep and stress relaxation: time-dependent dislocation motion, dislocation climb, Nabarro-Herring Creep, Coble Creep, Harper-Dorn Creep.
3Recognize mapping strategies for design using deformation mechanism maps.
4Describe effects of processing and microstructure on deformation mechanisms.
made by Purdue students.