Module

Voraussetzungen

Inhalte

Introduction to plasticity: • Flow stress and strains • Yield criteria • Fracture Hot deformation: • Flow stresses • Hot deformation microstructures • Hot deformation and dynamic softening mechanisms • Recovery • Recrystallization of single-phase and two-phase alloys • Grain growth following recrystallization Hot workability assessment • Dynamic materials model • Processing maps Forming techniques: • Forging • Rolling • Extrusion • Wire drawing Defects in thermo-mechanical processing: • Form defects • Surface defects • Cracking • Other structural and process-related defects Thermomechanical processing of steel: • Low carbon steels • Dual phase and TRIP steels • HSLA steels Severe plastic deformation

Lernziele

Students will gain an in-depth knowledge of the fundamentals of hot forming of metallic materials and the microstructure evolution during hot forming. They will learn about the main defects that occur during different thermomechanical processes and how to mitigate their formation. They will also learn how to apply the Dynamic Materials Model to evaluate the hot formability of various metals and alloys. The thermo-mechanical treatment of different types of steels will be reviewed, giving students further knowledge of forming and deformation of steels in different applications, e.g. car body and pipeline applications.

Prüfungsleistung

• Study project with final presentation, ~30 min. (30%) and • Written exam, 60 min. (70%)