Politecnico di Torino
Politecnico di Torino
Politecnico di Torino
Anno Accademico 2010/11
Technology of metallic materials
Corso di Laurea in Ingegneria Dell'Autoveicolo (Automotive Engineering) - Torino
Docente Qualifica Settore Lez Es Lab Tut Anni incarico
Ubertalli Graziano ORARIO RICEVIMENTO AC ING-IND/21 40 8 6 0 9
SSD CFU Attivita' formative Ambiti disciplinari
ING-IND/21 5 B - Caratterizzanti Ingegneria dei materiali
Obiettivi dell'insegnamento
The primary aim of the module is to correlate properties of metals and alloys to chemical composition, microstructure, and manufacturing methods with the final aim of identifying, technologically and economically, the most suitable materials and processing technologies for the realization of automotive parts and systems.
Competenze attese
The student will become familiar with the mechanical and technological properties of metal alloys and basic processing technologies, so that he can build up the required criteria for the optimum choice of metals and alloys for the manufacturing of motor vehicle components and structures.
It is required a basic knowledge of the contents of the modules Material Technology and Applied Chemistry and Mechanical behaviour of Materials.
· Outlines on the crystalline structure of metals; solid solutions for substitution and intrusions, intermetallic phases, semi-metallic, and interstitial compounds.
· Substitutional and interstitial diffusion phenomena, strain hardening and recristallization processes, grain growth, solidification mechanism, nucleation and solid-state.
· Phase diagrams Fe-C, Fe-N, Al-Cu, Al-Si, Al-Mg, Cu-Zn, Cu-Sn.
· Casting: solidifications and casting microstructure, casting defects and their influence on mechanical properties; foundry: models, forms, cores; gravity casting, sand casting and chill casting, die casting, semi-solid casting.
· Metallurgical phenomena in plastic (hot, warm, cold) deformation; forging, rolling, extrusion, drawing, stamping and FLD curves; idroforming, superplastic forming; influence of processing methods on microstructure and mechanical properties and finish; formability tests.
· Sintering: basic phenomena, powder forging, metal injection moulding, hot isostatic pressing, electric-activated sintering; microstructure and mechanical properties of sintered components.
Outline and problems of corrosion in metal alloy and protection methods; basic selection of stainless steels and non ferrous alloys for typical corrosion problems

· Primary and secondary processing of steels, Influence of alloying elements on steel properties; austenite, ferrite, pearlite, bainite, martensite microstucture and properties.
· Heat treatment of steels: annealing, normalizing, quenching and tempering, hardenability and weldability of steels, austempering, martempering; thermomechanical treatments. Correlation between composition, microstructure, heat treatment method and mechanical properties.
· Surface hardening of steels: induction and laser hardening, carburizing and nitriding treatments; comparisons and selection criteria.
· Nomenclature and classes of steels
· Selection of steels for motor vehicle components: sheets and drawing quality, construction steels, spring steels, bearing steels, tool steels, valve steels.
· Cast irons: grey cast irons, ductile cast irons, white cast irons, heat treatment on cast irons, austempered cast irons.

NON-FERROUS METAL ALLOYS (1 credit, 6 hours of lessons, 4 hours of workshops)
· Alluminum; alluminum alloys of interest to the motor vehicle: casting alloys and microstructure refinement methods; wrought alloys and precipitation, aging and overaging phenomena; correlation between composition, microstructure, heat treatment method and mechanical properties; alloys nomenclature and typical automotive applications.
· Magnesium; magnesium alloys of interest to the motor vehicle: casting and wrought alloys; nomenclature and typical automotive applications
· Outlines of copper and its alloys; brasses and bronzes.
Reference texts:
A. Burdese, "Metallurgia e Tecnologia dei Materiali Metallici", UTET, Torino.
W. Nicodemi, "Metallurgia, Principi Generali" e "Acciai e Leghe Non Ferrose", Zanichelli, Bologna.
Teaching material is also available in the form of handouts and lecture notes.
Controlli dell'apprendimento / Modalità d'esame
The exam consists of a written and oral test.
Orario delle lezioni
Statistiche superamento esami

Programma definitivo per l'A.A.2009/10

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