29773 - Metallurgy T

Course contents

Mechanical testing and properties: tensile, hardness, fatigue, impact, creep, friction and wear

Alloys and phase diagrams.

Solidification microstructure and defects. Nucleation and growth of pure metals and alloys. Control of the solidification microstructure. Influence of solidification microstructure and defects on the mechanical properties.

Crystal structure and imperfections in the atomic arrangement. Main crystal structures of metals and their effect on mechanical properties. Point defects and atoms movements in materials (diffusion).

Dislocations and theory of plastic deformation

Strengthening mechanisms of metals: solid solution, strain hardening, grain refinement, precipitation and dispersion.

Iron-Carbon phase diagram.

Designation and classification of steels according to EURONORM

Phase transformation in steels: TTT and CCT curves.

Heat treatments of steels: annealing, normalizing, quenching, tempering.

Thermochemical diffusion treatments of steels: carburising and nitriding

Low carbon strip steels, low carbon structural steels, engineering steels

Wrought and casting aluminium alloys

Microstructural and fractographic analyses of metals

Selection criteria of metals as a function of the service condition.

Readings/Bibliography

Course Material (slides and notes)

G.M. Paolucci, “Appunti dalle lezioni di Metallurgia per la laurea in Ingegneria Meccanica” Vol.1-2, Edizioni Libreria Progetto, Padova

W. Nicodemi “Metallurgia - Principi generali”, Zanichelli

Teaching methods

Lectures according to the timetable. Pratice in laboratory

Assessment methods

Written examination

Teaching tools

PC and projector, blackboard. Teaching lab (equipment for metallographic preparation; optical and stereo microscopy with image analyser; hardness testers; tensile tester) and research labs.

Office hours

See the website of Lorella Ceschini