OVERVIEW

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.

AIMS AND CONTENT

LEARNING OUTCOMES

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. 

AIMS AND LEARNING OUTCOMES

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.

TEACHING METHODS

Most of classes are held in the class room with slides and the support of expert's seminars

Lab activities are carreid out as last lessons in the laboratory of metallurgy at the DCCI. These classes are meant to make the student aquainted with the manufacturing and shaping of FCC alloys.

SYLLABUS/CONTENT

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.

RECOMMENDED READING/BIBLIOGRAPHY

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

TEACHERS AND EXAM BOARD

Exam Board

PAOLO PICCARDO (President)

VALERIA BONGIORNO

GIORGIA GHIARA

ROBERTO SPOTORNO

LESSONS

LESSONS START

last week of September

Class schedule

The timetable for this course is available here: Portale EasyAcademy

EXAMS

EXAM DESCRIPTION

The exam session corresponds to a dual process: written (first part) and oral (only applicable for those not reaching at least 27/30 in the evaluation of the written exam).

The first test (written) is organized in 3 questions to be answered in a total of three hours: The topics treated are related to those discussed during the classes. The studend is requested to reply to the questions by showing the acquired knowledge and the ability to  make connections and to discuss around the proposed question. Each of the three questions has a maximum of 10 points. The three voices summed up together correspond to the final evaluation. 

ASSESSMENT METHODS

The correction of the written exam is carried on by the members of the commission. Each answer is evaluated on the base of its scientific value, ability to connect various topics, quality of the argumentations. 

Exam schedule

FURTHER INFORMATION

The notations are from 18 to 30 on 30 . The special mention (con lode) is attributed when the whole exam is considered outstanding.