The subject aims to provide more advanced and complementary knowledge related to metallic materials and their application in the mechanical industry than those provided in the first level courses of Italian universities. In particular, in the teaching of Science and technology of materials / Technology of metallic materials of this University. These are fundamental knowledges in the profession of a mechanical engineer. The teaching places particular emphasis on the understanding of the interdependence between the choice of a metallic material and the design of its working cycle: choice and design are conditioned by the desired and requested properties in working conditions; therefore, the following inherent aspects are dealt with, in particular concerning the metallic materials, together with the reciprocal correlations: 1) Principles of physical metallurgy and thermodynamics; 2) Manufacturing, heat treatment and mechanical processes; 3) Structures, microstructures and their properties; 4) Performance on site (mainly mechanical but also electromagnetic, thermal and in the presence of corrosion).

Knowledge of thermodynamics and theory of solid-state transformations. Knowledge of the fundamental principles of mechanical properties, in the presence of corrosion, thermal, electrical and magnetic of metallic materials. Knowledge of the main technologies of production, manufacture and transformation of steels and other metallic materials. Specific knowledge concerning the following categories of materials: high strength weldable steels, cast irons, stainless steels, tool steels, aluminum alloys, titanium alloys, others. The students acquire the ability to understand and know the problem concerning the engineering materials choose for the different fields of applications, with a critical approach.

Basic knowledge of Physics, Chemistry, structural Mechanics, science and technology of metallic materials.

Powder metallurgy technology. Powders (types and properties), compacting pressing (materials classes, types of dies, methods), sintering (furnaces, atmospheres, operating conditions, mechanism) post-treatments, products. Corrosion. Anodic and cathodic behavior. Oxygen, temperature and solution concentration influences. The different types of corrosion. Galvanic corrosion coupling different materials or in case of different phases. Active and passive behavior of stainless steels. Protection methods of metallic materials. Stainless steels. Schaeffler and De Long diagram. Stainless steels classes and designation. Heat treatment, welding, deformability and tool work-ability. Surface finishing. Sanification. Metallic ions release. Tool steels. Cold and hot working classes. Heat treatment and tempering parameters. High speed steels. Deep drawing steels and aluminum alloys for "Body in White" car components. Surface coating technologies and materials. Titanium alloys. Grades, alloying elements, phase diagrams, properties, heat treatments, influence of microstructure. Applications and products. Metallic materials microstructure and failure analysis: fracture modes and morphologies. Overview of cellular materials, applications. Metal foams with open and closed cells. Elastic and plastic compression behavior, density effect. Absorption of energy during the impact.

Lectures in class (uploaded on the Portale della Didattica), numerical and graphical practice in teams on several themes subjects of the subject. Laboratory of metallurgy, optical and electronic microscopy, x-Ray diffractometric analyses, chemical analyses with small groups of students.

Lecture notes, Texts, uploaded on the Portale della Didattica G. Krauss, "Steels, Processing, Structure, and Performance", 2nd ed., ASM International F.C. Campbell, "Elements of Metallurgy and Engineering Alloys", ASM International H. Bhadeshia ed H. Honeycombe, "Steels: Microstructure and Properties", Butterworth-Heinemann ASM Metals Handbook X Ed.

Modalità di esame: Prova scritta (in aula);

Exam: Written test;

... Written exam with a duration time of indicatively 75 minutes and maximum mark of 30/30 with laude; it consists of 7-8 open or multiple response questions on all the topics covered during the semester, each evaluated from 2 to 6 points, according to the difficulty. The exam will test the knowledge of the students about: - Principles of physical metallurgy and thermodynamics; - Manufacturing, heat treatment and mechanical processes; - Structures, microstructures and their properties; - Performance on site (mainly mechanical but also electromagnetic, thermal and in the presence of corrosion). During the exam texts, handouts, forms, notes, electronic devices of any kind and internet connection cannot be used. After tests correction, all students can achieve information on their exam evaluation from the professors in a proposed meeting after around 1 week from date of the written exam.

Gli studenti e le studentesse con disabilità o con Disturbi Specifici di Apprendimento (DSA), oltre alla segnalazione tramite procedura informatizzata, sono invitati a comunicare anche direttamente al/la docente titolare dell'insegnamento, con un preavviso non inferiore ad una settimana dall'avvio della sessione d'esame, gli strumenti compensativi concordati con l'Unità Special Needs, al fine di permettere al/la docente la declinazione più idonea in riferimento alla specifica tipologia di esame.