Mechanical Engineering

The crystal structure of metals. Interstitials. Vacancies. Diffusion. Fick’s laws. Phases. Basic definitions. Binary phase diagrams. Solidification of metals end alloys. The iron-carbon system. The hardening of steel. Bain TTT diagrams. CCT diagrams. Quenching. Tempering. Stress-strain. Stress-strain curve. Young modulus. Elastic limit. Plastic deformation. Work hardening Hardness testing. Charpy test. Monocrystl plastic- slip . Schmidt law. Dislocations. Stacking fault. Grain boundary. Hall-petch law. Solid solution. Work hardening. Dispersion hardening. Orowan. Precipitation hardening. Recrystallization. Grain growth. Creep. Fracture toughness: KIc. Fatigue. Wolher curves. Paris law. Main binary phase diagrams. Mechanicals property of alloys. Classification end designation of alloys. Laboratory: SEM-EDS. Mechanicals test. Metallography. Fractography

For this course the knowledge of the basic concepts of the chemistry course is essential.

Ferdinando Felli, Daniela Pilone Fondamenti di METALLURGIA per l'ingegneria ESCULAPIO editrice (Bologna)

Attending classes is not mandatory.

For determining the final mark the following aspects will be considered: - the level of knowledge - the ability to correlate different topics - the ability of applying the acquired knowledge to the solution of problems of limited complexity - the ability to communicate the acquired knowledge and to illustrate the proposed technical solutions with clarity The minimum grade for passing the exam (18/30) is achieved only if the student proves to know, with a sufficient degree of completeness, the basic principles of mechanical metallurgy. In order to obtain the highest marks (30/30 cum laude), the student must demonstrate that he has acquired excellent knowledge of all the topics covered in the course, and that he can use this knowledge to solve engineering problems.

The activities are organized in: - face to face lectures (for the acquisition of knowledge) - Laboratory tests aimed at acquiring a best knowledge of some course topics - Exercises for solving engineering problems