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Teacher
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ROSSI EDOARDO
(syllabus)
Introduction to the World of Materials - Historical background, evolution of materials, an internal look at their structure, and an overview of transformations - Properties and performance of components
Basic Properties and Elastic Behavior - Intrinsic properties - Extrinsic properties - Mechanical stress systems: rigid body, deformable body, continuum mechanics; linear elasticity, Hooke's law, elastic behavior of isotropic solids
Composition and Structure of Matter at Different Dimensional Scales - Composition: molecules, chemical bonding, Condon-Morse curves; ionic materials, molecular materials - Thermodynamic origin of elasticity - Structures: amorphous and crystalline, Bravais lattices, and Miller indices - Defects in crystalline solids: point, line, and surface defects
Mechanical Behavior of Materials - Influence of T (temperature) and t (time) on mechanical behavior depending on the nature of the material - Static tensile stresses at low T: stress-strain curve (elastic field, plastic field, critical points) - Mechanical properties: ductility, hardness, brittleness, resilience, and toughness (property measurement techniques) - Fracture mechanics: Griffith's energy theory, stress intensity factor, fracture toughness - Dynamic stresses: fatigue, Wohler curve, Paris-Erdogan law
Single-Phase and Multi-Phase Systems - Thermodynamics of systems: thermodynamics of condensed states, basic concepts, first law, second law, equilibrium conditions, non-equilibrium states, combined first and second laws, characteristic state functions - Solid-state solubility: cooling curves of single-component systems, aggregation state, Hume-Rothery rules, solid solutions, phases - Solubility dependence on composition, temperature, and pressure: Gibbs rule and lever rule, Gibbs energy, Gibbs curves, phase equilibria in binary systems - Solid-state phase transformations: diffusion mechanisms, activation energy, and Fick’s laws - Solidification kinetics and microstructures: nucleation and growth, key thermodynamic transformations, microstructures
Introduction to the Main Classes of Metallic Materials - Iron-based alloys: classification of steels and cast irons, main phase diagrams, classification of specific heat treatments; special steels, stainless steels, and applications - Titanium alloys: properties, processes – applications - Aluminum alloys: properties, processes – applications - Superalloys: properties, processes – applications
Introduction to the Main Classes of Non-Metallic Materials - Polymers and polymer matrix composites: properties, processes, applications - Ceramics: properties, processes, an introduction to Weibull statistics – applications - Recap, Complements, In-Depth Topics, and Numerical Exercises for Each Subject
(reference books)
W.D. Callister, Jr. and D.G. Rethwisch - Materials Science and Engineering Publisher: Wiley
Vincenzo Casciaro and Carlo Mapelli - Science and Technology of Metallic Materials Publisher: CittàStudi Edizioni
Lucio Vergani, Maurizio Carboni - Exercises in Materials Science and Technology Publisher: Esculapio
Slides shown during lectures: available as PDFs on Moodle Lecture notes: available online on the group's Teams site
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