THE AIM OF THE CLASS IS TO GAIN KNOWLEDGE OF THE DIFFERENT LEVELS OF MATERIALS STRUCTURES (ATOMIC, CRYSTALLINE, NANOMETRIC, MICROSCOPIC AND MESOSCOPIC) AND OF THE DEVIATIONS FROM THE STRUCTURAL PERFECTION (DEFECTS). KNOWLEDGE OF THE EFFECTS OF NANO- AND MICROSTRUCTURE ON MECHANICAL PROPERTIES OF MATERIALS. KNOWLEDGE OF THE SCIENTIFIC BASIS FOR THE DEVELOPMENT OF MICRO AND NANOSTRUCTURE. KNOWLEDGE OF THE RELATIONSHIPS BETWEEN NANO- AND MICROSTRUCTURE, PROCESS, PROPERTIES AND PERFORMANCES OF THE DIFFERENT MATERIALS, WITH PARTICULAR ATTENTION TO METALS: STEELS, CAST IRONS, LIGHT ALLOYS AND HIGH TEMPERATURE ALLOYS. THE FUNDAMENTAL CONCEPTS NEEDED TO CORRELATE THE PROPERTIES OF MATERIALS TO THEIR NATURE, PRODUCTION AND FORMING PROCESSES WILL BE DISCUSSED, AS WELL AS NOTIONS ON THE CLASSIFICATION AND APPLICATION PROBLEMS.
teacher profile teaching materials
- Historical references, evolution of materials, a look inside them and a nod to the transformations
- Properties and performance of the 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 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 indices
- Defects in crystalline solids: point, line and surface lattices
Mechanical behavior of materials
- Influence of T and t on the 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, brittleness, resilience and toughness (property measurement techniques)
- Fracture mechanics: Griffith energy theory, stress intensification factor, fracture toughness
- Dynamic stresses: fatigue, Wohler curve, Paris-Erdogan law
Mono- and multi-phase systems
- Thermodynamics of systems: Thermodynamics of condensed states, basic concepts, first law, second law, equilibrium conditions, non-equilibrium states, I and II principles together, characteristic state functions
- solubility in the solid state: cooling curves of one-component systems, state of aggregation, Hume-Rothery rules, solid solutions, phase
- dependence of solubility on composition, temperature and pressure: Gibbs and lever rules, Gibbs energy, Gibbs curves, phase equilibria in binary systems
- phase transformations in the solid state: diffusion mechanisms, activation energy and Fick's 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
- Polymers and polymer matrix composites: properties, processes, applications
- Ceramics: properties, processes, notes on Weibull statistics - applications
References, complements, insights and numerical exercises provided for each topic.
Scienza e tecnologie dei metalli - CittàStudi Edizioni
Esercitazioni: su dispense del docente e su Moodle
Slide proiettate a lezione: in pdf su Moodle
Dispense online sul sito Teams del gruppo
https://teams.microsoft.com/l/team/19%3A20e53e6e143f49df8e721a6615b41200%40thread.tacv2/conversations?groupId=174fac2d-6262-4c07-9f8f-d67871354af7&tenantId=
Fruizione: 20810302 Scienza e tecnologia dei materiali in Ingegneria delle Tecnologie Aeronautiche e del Trasporto Aereo L-9 BEMPORAD EDOARDO
Programme
Introduction to the world of materials- Historical references, evolution of materials, a look inside them and a nod to the transformations
- Properties and performance of the 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 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 indices
- Defects in crystalline solids: point, line and surface lattices
Mechanical behavior of materials
- Influence of T and t on the 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, brittleness, resilience and toughness (property measurement techniques)
- Fracture mechanics: Griffith energy theory, stress intensification factor, fracture toughness
- Dynamic stresses: fatigue, Wohler curve, Paris-Erdogan law
Mono- and multi-phase systems
- Thermodynamics of systems: Thermodynamics of condensed states, basic concepts, first law, second law, equilibrium conditions, non-equilibrium states, I and II principles together, characteristic state functions
- solubility in the solid state: cooling curves of one-component systems, state of aggregation, Hume-Rothery rules, solid solutions, phase
- dependence of solubility on composition, temperature and pressure: Gibbs and lever rules, Gibbs energy, Gibbs curves, phase equilibria in binary systems
- phase transformations in the solid state: diffusion mechanisms, activation energy and Fick's 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
- Polymers and polymer matrix composites: properties, processes, applications
- Ceramics: properties, processes, notes on Weibull statistics - applications
References, complements, insights and numerical exercises provided for each topic.
Core Documentation
W.D. Callister, Scienza e Ingegneria dei MaterialiScienza e tecnologie dei metalli - CittàStudi Edizioni
Esercitazioni: su dispense del docente e su Moodle
Slide proiettate a lezione: in pdf su Moodle
Dispense online sul sito Teams del gruppo
https://teams.microsoft.com/l/team/19%3A20e53e6e143f49df8e721a6615b41200%40thread.tacv2/conversations?groupId=174fac2d-6262-4c07-9f8f-d67871354af7&tenantId=
Type of delivery of the course
2h lectures, exercises and Q&A sessions, seminars, lab visit.Type of evaluation
Evaluation will consist of a written test using moodle platform and an oral exam. During covid-19 emergency both will be online, under proctoring.