Università Roma Tre

Introduction to the world of materials
- Historical references, evolution of materials, a look inside them and a nod to transformations
- Properties and performance of the components
Basic properties and elastic behavior
- Intrinsic properties
- Extrinsic properties
- Mechanical stress systems: rigid body, deformable body, mechanical continuum; linear elasticity, Hooke's law, elastic behavior of the isotropic solid
Composition and structure of matter at different dimensional scales - Composition: molecule, chemical bond, Condon-Morse curves; ionic materials, molecular materials - Thermodynamic origin of elasticity - Structures: amorphous and crystalline, Bravais lattices and Miller indexes - Defects in crystalline solids: point, line and surface lattices
Mechanical behavior of materials
- Influence of T and t on mechanical behavior as a function of the nature of the material
- Static tensile stresses at low T: stress-strain curve (elastic field, plastic field, critical points)
- Mechanical properties: ductility, hardness, fragility, resilience and toughness (property measurement techniques)
- Fracture mechanics: Griffith energy theory, stress intensification factor, fracture toughness
- Dynamic solicitations: fatigue, Wohler curve, Paris-Erdogan law
Mono and multi-phase systems
- Systems thermodynamics: Thermodynamics of condensed states, basic concepts, first principle, second principle, equilibrium conditions, non-equilibrium states, I and II together, characteristic state functions
- solid state solubility: cooling curves of one-component systems, aggregation state, Hume-Rothery rules, solid solutions, phase
- dependence of solubility on composition, temperature and pressure: Gibbs rule and leverage, Gibbs energy, Gibbs curves, phase equilibria in binary systems
- phase transformation in the solid state: diffusion mechanisms, activation energy and Fick laws
- solidification kinetics and microstructures: nucleation and growth, main 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
Introduction to the main classes of non-metallic materials
- Polymeric matrix polymers and composites: properties, processes, applications
- Ceramics: properties, processes, references to Weibull statistics, applications
Laboratory activities and exercises

W.D. Callister, Scienza e Ingegneria dei Materiali
slides of the course in pdf format