Metallic materials are part of daily life and correspond to a great achievement of millenia of research and development in various fields of knowledge and techonology. This is why the Metallurgy classes touch the fields of archaeology as well of engineering passing through the chemistry and the materials science. It starts from "How did we reach this point" to finsh with the modern iron metallurgy.
Basic knowledge of structure and properties of metallic mateirals, their manufacturing and process transformation, thermal treatments and application. Knowledge of the principles to select and manufacture the best matching materials in relation with their practical and industrial usage. Main metallgraphic methods. Skills to recognize the typical microstructures of steels, cast iron at various stages of manufacturing with the link to their properties.
To learn how to correlate the properties of metals with the chemical composition and their thermomechanical history.
Iron base alloys (carbon steel and cast iron) are presented more in detail with practical examples.
Most of classes are held in the class room with slides and the support of expert's seminars
Laboratory sessions are organized for those students having this planned in their original graduation or master course.
Metals in humankind history, from the discovery to the usage. Why metals and main applications: achievements and perspectives. A closer insight: metal bond and lattice (FCC, BCC, HCP). Fundamentals of crystallography. Defects: punctual linear and volumic. Lattice defects and diffusion. Fick's laws. Defects and plastic deformation. Burger's vector. Frank-Read sources. Cottrel atmospheres and dislocations mobility. Dislocations interaction with inclusions, grain boundaries, precipitates and second phases. Metallic materials characterization methods: Optical Metallography (sampling, polishing, etching, observation), Electron microscopy and chemical analysis (SEM, EDXS), mechanical tests (stress-strain, hardness, toughness), fatigue, creep. Fragile-ductile transition temperature. Critical shear stress. Strengthening methods: alloying, hardening, thermal treatment. Solid solution, intermetallic phase and compound, eutectic reaction, peritectic reaction, phase diagrams. Molten - solid transition of a pure metal, on an alloy. Micro- and Macro-segregation. Primary etching, Fe-C phase diagram. Carbon steel and cast iron. Bain curves, CCC curves. Thermal treatments: in gamma field (annealing, normalizing, quenching), in alpha field (recrystallization annealing, recovery, tempering). Introduction to quenchability measurements (Jominy). Thermo-chemical surface treatments. Practical metallography.
A. Cigada, T. Pastore, Struttura e proprietà dei materiali metallici, McGraw-Hill,
W. Nicodemi, Metallurgia, Zanichelli
R. E. Smallman and A. H.W. Ngan, Physical Metallurgy and Advanced Materials, Butterworth-Heinemann, 2007
Ricevimento: Appointments with the teacher can be arranged by calling 0103536145
PAOLO PICCARDO (President)
VALERIA BONGIORNO
GIORGIA GHIARA
ROBERTO SPOTORNO
JUSTINE MARIE VERNET
Sept. 29th,2016
Oral
Multyple question test at 2/3 of the classes
Slides are distributed to the students at the end of the classes
